./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i --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_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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_3a447871-e685-4081-9939-54198f1571e6/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 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:53:24,398 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:53:24,458 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 18:53:24,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:53:24,463 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:53:24,486 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:53:24,487 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:53:24,487 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:53:24,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:53:24,488 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:53:24,489 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:53:24,489 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:53:24,490 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:53:24,490 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:53:24,491 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:53:24,491 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:53:24,492 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:53:24,492 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:53:24,493 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:53:24,493 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:53:24,494 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:53:24,496 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:53:24,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 18:53:24,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 18:53:24,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:53:24,498 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:53:24,498 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:53:24,499 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:53:24,499 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:53:24,500 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 18:53:24,500 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 18:53:24,500 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 18:53:24,500 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:53:24,501 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:53:24,501 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:53:24,501 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:53:24,501 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:53:24,502 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:53:24,502 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:53:24,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:53:24,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:53:24,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:53:24,503 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:53:24,503 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:53:24,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:53:24,503 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:53:24,503 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:53:24,504 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:53:24,504 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_3a447871-e685-4081-9939-54198f1571e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 [2023-12-02 18:53:24,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:53:24,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:53:24,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:53:24,741 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:53:24,741 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:53:24,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2023-12-02 18:53:27,421 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:53:27,731 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:53:27,731 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2023-12-02 18:53:27,749 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/data/3356a79f7/86a99234ae9e44fd82154d84a77b659b/FLAG68bb39cbd [2023-12-02 18:53:27,764 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/data/3356a79f7/86a99234ae9e44fd82154d84a77b659b [2023-12-02 18:53:27,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:53:27,767 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:53:27,769 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:53:27,769 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:53:27,774 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:53:27,774 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:53:27" (1/1) ... [2023-12-02 18:53:27,775 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a411600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:27, skipping insertion in model container [2023-12-02 18:53:27,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:53:27" (1/1) ... [2023-12-02 18:53:27,858 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:53:28,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:53:28,371 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 18:53:28,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b985f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:28, skipping insertion in model container [2023-12-02 18:53:28,372 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:53:28,373 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 18:53:28,374 INFO L158 Benchmark]: Toolchain (without parser) took 606.15ms. Allocated memory is still 132.1MB. Free memory was 95.5MB in the beginning and 73.6MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 18:53:28,375 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 132.1MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:53:28,375 INFO L158 Benchmark]: CACSL2BoogieTranslator took 603.93ms. Allocated memory is still 132.1MB. Free memory was 95.5MB in the beginning and 73.6MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 18:53:28,377 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 132.1MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 603.93ms. Allocated memory is still 132.1MB. Free memory was 95.5MB in the beginning and 73.6MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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_3a447871-e685-4081-9939-54198f1571e6/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 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:53:30,119 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:53:30,195 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-12-02 18:53:30,201 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:53:30,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:53:30,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:53:30,230 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:53:30,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:53:30,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:53:30,232 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:53:30,233 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:53:30,234 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:53:30,234 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:53:30,235 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:53:30,235 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:53:30,236 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:53:30,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 18:53:30,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 18:53:30,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:53:30,238 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:53:30,239 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:53:30,239 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:53:30,240 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:53:30,240 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 18:53:30,241 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 18:53:30,241 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 18:53:30,242 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:53:30,242 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:53:30,242 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 18:53:30,243 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 18:53:30,243 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:53:30,244 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:53:30,244 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:53:30,244 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:53:30,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 18:53:30,245 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:53:30,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:53:30,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:53:30,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:53:30,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:53:30,246 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 18:53:30,246 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 18:53:30,246 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:53:30,247 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:53:30,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:53:30,247 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_3a447871-e685-4081-9939-54198f1571e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 [2023-12-02 18:53:30,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:53:30,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:53:30,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:53:30,547 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:53:30,548 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:53:30,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2023-12-02 18:53:33,316 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:53:33,609 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:53:33,610 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2023-12-02 18:53:33,634 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/data/140294e0c/77188d1e8791485790b5dc7c535081cc/FLAG0639893ac [2023-12-02 18:53:33,649 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/data/140294e0c/77188d1e8791485790b5dc7c535081cc [2023-12-02 18:53:33,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:53:33,653 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:53:33,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:53:33,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:53:33,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:53:33,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:53:33" (1/1) ... [2023-12-02 18:53:33,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a830224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:33, skipping insertion in model container [2023-12-02 18:53:33,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:53:33" (1/1) ... [2023-12-02 18:53:33,733 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:53:34,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:53:34,295 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 18:53:34,307 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:53:34,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:53:34,441 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:53:34,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:53:34,553 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:53:34,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:34 WrapperNode [2023-12-02 18:53:34,554 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:53:34,555 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:53:34,555 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:53:34,555 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:53:34,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:34" (1/1) ... [2023-12-02 18:53:34,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:34" (1/1) ... [2023-12-02 18:53:34,667 INFO L138 Inliner]: procedures = 180, calls = 449, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1487 [2023-12-02 18:53:34,668 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:53:34,669 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:53:34,669 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:53:34,669 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:53:34,679 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:34" (1/1) ... [2023-12-02 18:53:34,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:34" (1/1) ... [2023-12-02 18:53:34,692 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:34" (1/1) ... [2023-12-02 18:53:34,693 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:34" (1/1) ... [2023-12-02 18:53:34,767 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:34" (1/1) ... [2023-12-02 18:53:34,778 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:34" (1/1) ... [2023-12-02 18:53:34,785 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:34" (1/1) ... [2023-12-02 18:53:34,794 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:34" (1/1) ... [2023-12-02 18:53:34,808 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:53:34,809 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:53:34,810 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:53:34,810 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:53:34,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:34" (1/1) ... [2023-12-02 18:53:34,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:53:34,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:53:34,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:53:34,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:53:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 18:53:34,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 18:53:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 18:53:34,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 18:53:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 18:53:34,877 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 18:53:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 18:53:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:53:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:53:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 18:53:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 18:53:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:53:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 18:53:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 18:53:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:53:34,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:53:35,103 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:53:35,104 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:53:35,108 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 18:53:40,782 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:53:41,010 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:53:41,010 INFO L309 CfgBuilder]: Removed 77 assume(true) statements. [2023-12-02 18:53:41,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:53:41 BoogieIcfgContainer [2023-12-02 18:53:41,011 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:53:41,014 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:53:41,014 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:53:41,018 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:53:41,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:53:33" (1/3) ... [2023-12-02 18:53:41,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ec5f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:53:41, skipping insertion in model container [2023-12-02 18:53:41,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:53:34" (2/3) ... [2023-12-02 18:53:41,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ec5f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:53:41, skipping insertion in model container [2023-12-02 18:53:41,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:53:41" (3/3) ... [2023-12-02 18:53:41,020 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test4-3.i [2023-12-02 18:53:41,039 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:53:41,040 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 851 error locations. [2023-12-02 18:53:41,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:53:41,114 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;@353f6e7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:53:41,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 851 error locations. [2023-12-02 18:53:41,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 1505 states, 641 states have (on average 2.574102964118565) internal successors, (1650), 1496 states have internal predecessors, (1650), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 18:53:41,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 18:53:41,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:41,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 18:53:41,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:53:41,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:41,135 INFO L85 PathProgramCache]: Analyzing trace with hash 78518253, now seen corresponding path program 1 times [2023-12-02 18:53:41,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:53:41,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933710101] [2023-12-02 18:53:41,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:41,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:53:41,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:53:41,148 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:41,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:41,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 18:53:41,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:41,328 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 18:53:41,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:53:41,329 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:53:41,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933710101] [2023-12-02 18:53:41,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933710101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:41,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:41,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:53:41,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402048295] [2023-12-02 18:53:41,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:41,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 18:53:41,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:53:41,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 18:53:41,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:53:41,364 INFO L87 Difference]: Start difference. First operand has 1505 states, 641 states have (on average 2.574102964118565) internal successors, (1650), 1496 states have internal predecessors, (1650), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:53:42,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:42,280 INFO L93 Difference]: Finished difference Result 1486 states and 1577 transitions. [2023-12-02 18:53:42,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 18:53:42,283 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-02 18:53:42,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:42,306 INFO L225 Difference]: With dead ends: 1486 [2023-12-02 18:53:42,306 INFO L226 Difference]: Without dead ends: 1485 [2023-12-02 18:53:42,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:53:42,311 INFO L413 NwaCegarLoop]: 1419 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:42,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1419 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 18:53:42,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2023-12-02 18:53:42,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1485. [2023-12-02 18:53:42,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 632 states have (on average 2.4430379746835444) internal successors, (1544), 1476 states have internal predecessors, (1544), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 18:53:42,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 1576 transitions. [2023-12-02 18:53:42,407 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 1576 transitions. Word has length 4 [2023-12-02 18:53:42,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:42,407 INFO L495 AbstractCegarLoop]: Abstraction has 1485 states and 1576 transitions. [2023-12-02 18:53:42,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:53:42,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 1576 transitions. [2023-12-02 18:53:42,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 18:53:42,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:42,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 18:53:42,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:42,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:42,610 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:53:42,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:42,611 INFO L85 PathProgramCache]: Analyzing trace with hash 78518315, now seen corresponding path program 1 times [2023-12-02 18:53:42,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:53:42,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604141600] [2023-12-02 18:53:42,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:42,612 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 18:53:42,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:53:42,613 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:42,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:42,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:53:42,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:42,788 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 18:53:42,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:53:42,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:53:42,806 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:53:42,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604141600] [2023-12-02 18:53:42,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604141600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:42,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:42,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:53:42,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191857092] [2023-12-02 18:53:42,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:42,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:53:42,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:53:42,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:53:42,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:53:42,809 INFO L87 Difference]: Start difference. First operand 1485 states and 1576 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:53:45,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:45,545 INFO L93 Difference]: Finished difference Result 1515 states and 1619 transitions. [2023-12-02 18:53:45,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:53:45,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-02 18:53:45,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:45,554 INFO L225 Difference]: With dead ends: 1515 [2023-12-02 18:53:45,554 INFO L226 Difference]: Without dead ends: 1515 [2023-12-02 18:53:45,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:53:45,556 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 1042 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:45,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1073 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-02 18:53:45,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2023-12-02 18:53:45,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1458. [2023-12-02 18:53:45,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 698 states have (on average 2.2578796561604584) internal successors, (1576), 1449 states have internal predecessors, (1576), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 18:53:45,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1608 transitions. [2023-12-02 18:53:45,597 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1608 transitions. Word has length 4 [2023-12-02 18:53:45,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:45,597 INFO L495 AbstractCegarLoop]: Abstraction has 1458 states and 1608 transitions. [2023-12-02 18:53:45,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:53:45,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1608 transitions. [2023-12-02 18:53:45,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 18:53:45,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:45,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 18:53:45,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:45,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:45,799 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:53:45,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:45,800 INFO L85 PathProgramCache]: Analyzing trace with hash 78518316, now seen corresponding path program 1 times [2023-12-02 18:53:45,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:53:45,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725687634] [2023-12-02 18:53:45,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:45,801 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 18:53:45,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:53:45,802 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:45,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:45,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:53:45,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:45,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:53:45,976 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 18:53:45,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:53:45,976 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:53:45,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725687634] [2023-12-02 18:53:45,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725687634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:45,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:45,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:53:45,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916559424] [2023-12-02 18:53:45,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:45,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:53:45,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:53:45,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:53:45,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:53:45,978 INFO L87 Difference]: Start difference. First operand 1458 states and 1608 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:53:50,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:50,293 INFO L93 Difference]: Finished difference Result 1730 states and 1900 transitions. [2023-12-02 18:53:50,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:53:50,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-02 18:53:50,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:50,301 INFO L225 Difference]: With dead ends: 1730 [2023-12-02 18:53:50,301 INFO L226 Difference]: Without dead ends: 1730 [2023-12-02 18:53:50,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:53:50,303 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 456 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:50,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1701 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-02 18:53:50,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2023-12-02 18:53:50,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1581. [2023-12-02 18:53:50,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 831 states have (on average 2.2250300842358604) internal successors, (1849), 1572 states have internal predecessors, (1849), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 18:53:50,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 1881 transitions. [2023-12-02 18:53:50,361 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 1881 transitions. Word has length 4 [2023-12-02 18:53:50,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:50,361 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 1881 transitions. [2023-12-02 18:53:50,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:53:50,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 1881 transitions. [2023-12-02 18:53:50,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 18:53:50,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:50,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 18:53:50,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:50,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:50,563 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:53:50,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:50,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1859208265, now seen corresponding path program 1 times [2023-12-02 18:53:50,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:53:50,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677246096] [2023-12-02 18:53:50,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:50,565 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 18:53:50,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:53:50,566 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:50,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:50,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:53:50,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:50,700 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 18:53:50,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:53:50,701 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:53:50,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677246096] [2023-12-02 18:53:50,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677246096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:50,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:50,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:53:50,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434462262] [2023-12-02 18:53:50,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:50,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:53:50,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:53:50,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:53:50,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:53:50,703 INFO L87 Difference]: Start difference. First operand 1581 states and 1881 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:53:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:52,119 INFO L93 Difference]: Finished difference Result 2770 states and 3331 transitions. [2023-12-02 18:53:52,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:53:52,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 18:53:52,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:52,131 INFO L225 Difference]: With dead ends: 2770 [2023-12-02 18:53:52,131 INFO L226 Difference]: Without dead ends: 2770 [2023-12-02 18:53:52,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:53:52,132 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 1029 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:52,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 2623 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 18:53:52,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2023-12-02 18:53:52,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 1582. [2023-12-02 18:53:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 832 states have (on average 2.2235576923076925) internal successors, (1850), 1573 states have internal predecessors, (1850), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 18:53:52,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 1882 transitions. [2023-12-02 18:53:52,167 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 1882 transitions. Word has length 5 [2023-12-02 18:53:52,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:52,167 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 1882 transitions. [2023-12-02 18:53:52,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:53:52,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 1882 transitions. [2023-12-02 18:53:52,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 18:53:52,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:52,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:52,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:52,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:52,369 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:53:52,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:52,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1057099819, now seen corresponding path program 1 times [2023-12-02 18:53:52,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:53:52,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515708830] [2023-12-02 18:53:52,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:52,370 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 18:53:52,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:53:52,371 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:52,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (6)] Waiting until timeout for monitored process [2023-12-02 18:53:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:52,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:53:52,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:52,533 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 18:53:52,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:53:52,534 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:53:52,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515708830] [2023-12-02 18:53:52,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515708830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:52,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:52,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:53:52,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196849140] [2023-12-02 18:53:52,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:52,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:53:52,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:53:52,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:53:52,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:53:52,536 INFO L87 Difference]: Start difference. First operand 1582 states and 1882 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:53:53,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:53,753 INFO L93 Difference]: Finished difference Result 1543 states and 1842 transitions. [2023-12-02 18:53:53,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:53:53,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 18:53:53,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:53,761 INFO L225 Difference]: With dead ends: 1543 [2023-12-02 18:53:53,761 INFO L226 Difference]: Without dead ends: 1543 [2023-12-02 18:53:53,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:53:53,763 INFO L413 NwaCegarLoop]: 1267 mSDtfsCounter, 70 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:53,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 2485 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 18:53:53,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-12-02 18:53:53,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2023-12-02 18:53:53,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 817 states have (on average 2.215422276621787) internal successors, (1810), 1534 states have internal predecessors, (1810), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 18:53:53,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 1842 transitions. [2023-12-02 18:53:53,801 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 1842 transitions. Word has length 10 [2023-12-02 18:53:53,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:53,801 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 1842 transitions. [2023-12-02 18:53:53,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:53:53,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 1842 transitions. [2023-12-02 18:53:53,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 18:53:53,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:53,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:53,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (6)] Ended with exit code 0 [2023-12-02 18:53:54,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:54,005 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:53:54,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:54,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2034318927, now seen corresponding path program 1 times [2023-12-02 18:53:54,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:53:54,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372244863] [2023-12-02 18:53:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:54,006 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 18:53:54,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:53:54,007 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:54,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (7)] Waiting until timeout for monitored process [2023-12-02 18:53:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:54,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:53:54,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:54,165 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 18:53:54,166 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:53:54,166 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:53:54,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372244863] [2023-12-02 18:53:54,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372244863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:54,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:54,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:53:54,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60848159] [2023-12-02 18:53:54,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:54,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:53:54,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:53:54,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:53:54,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:53:54,168 INFO L87 Difference]: Start difference. First operand 1543 states and 1842 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:53:55,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:55,531 INFO L93 Difference]: Finished difference Result 1529 states and 1821 transitions. [2023-12-02 18:53:55,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:53:55,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 18:53:55,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:55,538 INFO L225 Difference]: With dead ends: 1529 [2023-12-02 18:53:55,538 INFO L226 Difference]: Without dead ends: 1529 [2023-12-02 18:53:55,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:53:55,539 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 58 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:55,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3684 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 18:53:55,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2023-12-02 18:53:55,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1528. [2023-12-02 18:53:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 816 states have (on average 2.1911764705882355) internal successors, (1788), 1519 states have internal predecessors, (1788), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 18:53:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 1820 transitions. [2023-12-02 18:53:55,573 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 1820 transitions. Word has length 12 [2023-12-02 18:53:55,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:55,573 INFO L495 AbstractCegarLoop]: Abstraction has 1528 states and 1820 transitions. [2023-12-02 18:53:55,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:53:55,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 1820 transitions. [2023-12-02 18:53:55,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 18:53:55,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:55,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:55,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (7)] Ended with exit code 0 [2023-12-02 18:53:55,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:55,778 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:53:55,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:55,779 INFO L85 PathProgramCache]: Analyzing trace with hash -40476259, now seen corresponding path program 1 times [2023-12-02 18:53:55,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:53:55,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833813770] [2023-12-02 18:53:55,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:55,779 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 18:53:55,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:53:55,780 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:55,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:55,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:53:55,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:55,919 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 18:53:55,982 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 18:53:55,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:53:55,982 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:53:55,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833813770] [2023-12-02 18:53:55,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833813770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:55,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:55,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:53:55,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039975824] [2023-12-02 18:53:55,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:55,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:53:55,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:53:55,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:53:55,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:53:55,984 INFO L87 Difference]: Start difference. First operand 1528 states and 1820 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:53:59,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:59,292 INFO L93 Difference]: Finished difference Result 1581 states and 1827 transitions. [2023-12-02 18:53:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:53:59,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-02 18:53:59,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:59,299 INFO L225 Difference]: With dead ends: 1581 [2023-12-02 18:53:59,299 INFO L226 Difference]: Without dead ends: 1581 [2023-12-02 18:53:59,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:53:59,300 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 977 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 1731 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:59,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1579 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-02 18:53:59,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2023-12-02 18:53:59,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1524. [2023-12-02 18:53:59,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 816 states have (on average 2.1862745098039214) internal successors, (1784), 1515 states have internal predecessors, (1784), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 18:53:59,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 1816 transitions. [2023-12-02 18:53:59,333 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 1816 transitions. Word has length 26 [2023-12-02 18:53:59,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:59,333 INFO L495 AbstractCegarLoop]: Abstraction has 1524 states and 1816 transitions. [2023-12-02 18:53:59,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:53:59,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 1816 transitions. [2023-12-02 18:53:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 18:53:59,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:59,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:59,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:59,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:59,535 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:53:59,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:59,536 INFO L85 PathProgramCache]: Analyzing trace with hash -40476258, now seen corresponding path program 1 times [2023-12-02 18:53:59,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:53:59,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731138587] [2023-12-02 18:53:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:59,536 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 18:53:59,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:53:59,537 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:59,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:53:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:59,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:53:59,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:59,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:53:59,868 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 18:53:59,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:53:59,869 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:53:59,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731138587] [2023-12-02 18:53:59,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731138587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:53:59,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:53:59,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:53:59,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057735658] [2023-12-02 18:53:59,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:53:59,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:53:59,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:53:59,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:53:59,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:53:59,871 INFO L87 Difference]: Start difference. First operand 1524 states and 1816 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:54:04,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:04,680 INFO L93 Difference]: Finished difference Result 1669 states and 1831 transitions. [2023-12-02 18:54:04,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:54:04,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-02 18:54:04,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:04,689 INFO L225 Difference]: With dead ends: 1669 [2023-12-02 18:54:04,689 INFO L226 Difference]: Without dead ends: 1669 [2023-12-02 18:54:04,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:54:04,690 INFO L413 NwaCegarLoop]: 1107 mSDtfsCounter, 393 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 1815 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 2258 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:04,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 2258 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1815 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-02 18:54:04,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2023-12-02 18:54:04,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1520. [2023-12-02 18:54:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 816 states have (on average 2.1813725490196076) internal successors, (1780), 1511 states have internal predecessors, (1780), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 18:54:04,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 1812 transitions. [2023-12-02 18:54:04,721 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 1812 transitions. Word has length 26 [2023-12-02 18:54:04,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:04,721 INFO L495 AbstractCegarLoop]: Abstraction has 1520 states and 1812 transitions. [2023-12-02 18:54:04,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:54:04,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 1812 transitions. [2023-12-02 18:54:04,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 18:54:04,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:04,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:54:04,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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)] Ended with exit code 0 [2023-12-02 18:54:04,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:54:04,923 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:54:04,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:04,924 INFO L85 PathProgramCache]: Analyzing trace with hash -207266793, now seen corresponding path program 1 times [2023-12-02 18:54:04,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:54:04,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933220693] [2023-12-02 18:54:04,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:04,924 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 18:54:04,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:54:04,925 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:54:04,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (10)] Waiting until timeout for monitored process [2023-12-02 18:54:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:05,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:54:05,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:05,186 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 18:54:05,186 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:54:05,187 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:54:05,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933220693] [2023-12-02 18:54:05,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933220693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:54:05,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:54:05,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:54:05,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504047113] [2023-12-02 18:54:05,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:54:05,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:54:05,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:54:05,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:54:05,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:54:05,188 INFO L87 Difference]: Start difference. First operand 1520 states and 1812 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:54:06,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:06,488 INFO L93 Difference]: Finished difference Result 1514 states and 1802 transitions. [2023-12-02 18:54:06,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:54:06,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2023-12-02 18:54:06,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:06,496 INFO L225 Difference]: With dead ends: 1514 [2023-12-02 18:54:06,496 INFO L226 Difference]: Without dead ends: 1514 [2023-12-02 18:54:06,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:54:06,496 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 23 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3670 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:06,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3670 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 18:54:06,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2023-12-02 18:54:06,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1514. [2023-12-02 18:54:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 810 states have (on average 2.185185185185185) internal successors, (1770), 1505 states have internal predecessors, (1770), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 18:54:06,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 1802 transitions. [2023-12-02 18:54:06,517 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 1802 transitions. Word has length 42 [2023-12-02 18:54:06,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:06,517 INFO L495 AbstractCegarLoop]: Abstraction has 1514 states and 1802 transitions. [2023-12-02 18:54:06,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:54:06,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 1802 transitions. [2023-12-02 18:54:06,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 18:54:06,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:06,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:54:06,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (10)] Ended with exit code 0 [2023-12-02 18:54:06,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:54:06,719 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:54:06,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:06,720 INFO L85 PathProgramCache]: Analyzing trace with hash -236358473, now seen corresponding path program 1 times [2023-12-02 18:54:06,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:54:06,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683511178] [2023-12-02 18:54:06,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:06,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:54:06,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:54:06,722 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:54:06,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (11)] Waiting until timeout for monitored process [2023-12-02 18:54:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:06,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:54:06,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:07,183 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 18:54:07,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:54:07,184 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:54:07,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683511178] [2023-12-02 18:54:07,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683511178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:54:07,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:54:07,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:54:07,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629862428] [2023-12-02 18:54:07,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:54:07,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:54:07,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:54:07,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:54:07,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:54:07,186 INFO L87 Difference]: Start difference. First operand 1514 states and 1802 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:54:08,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:08,584 INFO L93 Difference]: Finished difference Result 1902 states and 2207 transitions. [2023-12-02 18:54:08,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:54:08,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-12-02 18:54:08,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:08,595 INFO L225 Difference]: With dead ends: 1902 [2023-12-02 18:54:08,596 INFO L226 Difference]: Without dead ends: 1902 [2023-12-02 18:54:08,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:54:08,596 INFO L413 NwaCegarLoop]: 1296 mSDtfsCounter, 419 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 2426 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:08,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 2426 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 18:54:08,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2023-12-02 18:54:08,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1557. [2023-12-02 18:54:08,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 853 states have (on average 2.1254396248534584) internal successors, (1813), 1548 states have internal predecessors, (1813), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 18:54:08,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 1845 transitions. [2023-12-02 18:54:08,619 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 1845 transitions. Word has length 46 [2023-12-02 18:54:08,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:08,619 INFO L495 AbstractCegarLoop]: Abstraction has 1557 states and 1845 transitions. [2023-12-02 18:54:08,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:54:08,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 1845 transitions. [2023-12-02 18:54:08,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 18:54:08,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:08,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:54:08,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (11)] Ended with exit code 0 [2023-12-02 18:54:08,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:54:08,825 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:54:08,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:08,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2011352769, now seen corresponding path program 1 times [2023-12-02 18:54:08,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:54:08,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059782935] [2023-12-02 18:54:08,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:08,827 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 18:54:08,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:54:08,828 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:54:08,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (12)] Waiting until timeout for monitored process [2023-12-02 18:54:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:09,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 18:54:09,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:09,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:54:09,211 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 18:54:09,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:54:09,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 18:54:09,642 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:54:09,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:54:09,665 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 18:54:09,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:54:09,665 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:54:09,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059782935] [2023-12-02 18:54:09,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059782935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:54:09,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:54:09,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:54:09,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343749251] [2023-12-02 18:54:09,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:54:09,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:54:09,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:54:09,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:54:09,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:54:09,667 INFO L87 Difference]: Start difference. First operand 1557 states and 1845 transitions. Second operand has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:54:13,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:13,012 INFO L93 Difference]: Finished difference Result 1529 states and 1771 transitions. [2023-12-02 18:54:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:54:13,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-02 18:54:13,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:13,019 INFO L225 Difference]: With dead ends: 1529 [2023-12-02 18:54:13,019 INFO L226 Difference]: Without dead ends: 1529 [2023-12-02 18:54:13,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:54:13,019 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 1748 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1754 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:13,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1754 Valid, 857 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-02 18:54:13,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2023-12-02 18:54:13,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1340. [2023-12-02 18:54:13,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 720 states have (on average 2.0069444444444446) internal successors, (1445), 1331 states have internal predecessors, (1445), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 18:54:13,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1477 transitions. [2023-12-02 18:54:13,043 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1477 transitions. Word has length 49 [2023-12-02 18:54:13,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:13,043 INFO L495 AbstractCegarLoop]: Abstraction has 1340 states and 1477 transitions. [2023-12-02 18:54:13,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:54:13,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1477 transitions. [2023-12-02 18:54:13,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 18:54:13,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:13,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:54:13,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (12)] Ended with exit code 0 [2023-12-02 18:54:13,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:54:13,246 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:54:13,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:13,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1768431351, now seen corresponding path program 1 times [2023-12-02 18:54:13,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:54:13,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713652928] [2023-12-02 18:54:13,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:13,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:54:13,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:54:13,248 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:54:13,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (13)] Waiting until timeout for monitored process [2023-12-02 18:54:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:13,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:54:13,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:13,530 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 18:54:13,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 18:54:13,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-02 18:54:13,578 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 18:54:13,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:54:13,579 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:54:13,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713652928] [2023-12-02 18:54:13,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713652928] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:54:13,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:54:13,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:54:13,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544024628] [2023-12-02 18:54:13,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:54:13,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:54:13,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:54:13,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:54:13,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:54:13,580 INFO L87 Difference]: Start difference. First operand 1340 states and 1477 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:54:17,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:17,701 INFO L93 Difference]: Finished difference Result 1339 states and 1476 transitions. [2023-12-02 18:54:17,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:54:17,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-02 18:54:17,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:17,708 INFO L225 Difference]: With dead ends: 1339 [2023-12-02 18:54:17,709 INFO L226 Difference]: Without dead ends: 1339 [2023-12-02 18:54:17,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:54:17,709 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 3 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:17,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2945 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-02 18:54:17,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2023-12-02 18:54:17,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1339. [2023-12-02 18:54:17,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 720 states have (on average 2.0055555555555555) internal successors, (1444), 1330 states have internal predecessors, (1444), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 18:54:17,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1476 transitions. [2023-12-02 18:54:17,731 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1476 transitions. Word has length 53 [2023-12-02 18:54:17,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:17,732 INFO L495 AbstractCegarLoop]: Abstraction has 1339 states and 1476 transitions. [2023-12-02 18:54:17,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:54:17,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1476 transitions. [2023-12-02 18:54:17,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-02 18:54:17,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:17,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:54:17,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (13)] Ended with exit code 0 [2023-12-02 18:54:17,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:54:17,938 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:54:17,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:17,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1768431352, now seen corresponding path program 1 times [2023-12-02 18:54:17,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:54:17,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844074528] [2023-12-02 18:54:17,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:17,940 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 18:54:17,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:54:17,940 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:54:17,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (14)] Waiting until timeout for monitored process [2023-12-02 18:54:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:18,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 18:54:18,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:18,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:54:18,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 18:54:18,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 18:54:18,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-02 18:54:18,256 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 18:54:18,257 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:54:18,257 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:54:18,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844074528] [2023-12-02 18:54:18,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844074528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:54:18,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:54:18,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:54:18,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348700356] [2023-12-02 18:54:18,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:54:18,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:54:18,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:54:18,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:54:18,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:54:18,258 INFO L87 Difference]: Start difference. First operand 1339 states and 1476 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:54:23,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:23,618 INFO L93 Difference]: Finished difference Result 1338 states and 1475 transitions. [2023-12-02 18:54:23,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:54:23,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-02 18:54:23,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:23,625 INFO L225 Difference]: With dead ends: 1338 [2023-12-02 18:54:23,625 INFO L226 Difference]: Without dead ends: 1338 [2023-12-02 18:54:23,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:54:23,626 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 1 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 2228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:23,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2994 Invalid, 2228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-02 18:54:23,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2023-12-02 18:54:23,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1338. [2023-12-02 18:54:23,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 719 states have (on average 2.0069541029207234) internal successors, (1443), 1329 states have internal predecessors, (1443), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 18:54:23,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1475 transitions. [2023-12-02 18:54:23,645 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1475 transitions. Word has length 53 [2023-12-02 18:54:23,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:23,645 INFO L495 AbstractCegarLoop]: Abstraction has 1338 states and 1475 transitions. [2023-12-02 18:54:23,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:54:23,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1475 transitions. [2023-12-02 18:54:23,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-02 18:54:23,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:23,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:54:23,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (14)] Ended with exit code 0 [2023-12-02 18:54:23,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:54:23,846 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:54:23,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:23,847 INFO L85 PathProgramCache]: Analyzing trace with hash 713113117, now seen corresponding path program 1 times [2023-12-02 18:54:23,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:54:23,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594559151] [2023-12-02 18:54:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:23,847 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 18:54:23,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:54:23,848 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:54:23,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (15)] Waiting until timeout for monitored process [2023-12-02 18:54:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:24,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:54:24,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:24,115 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 18:54:24,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:54:24,115 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:54:24,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594559151] [2023-12-02 18:54:24,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594559151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:54:24,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:54:24,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:54:24,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994693931] [2023-12-02 18:54:24,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:54:24,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:54:24,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:54:24,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:54:24,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:54:24,117 INFO L87 Difference]: Start difference. First operand 1338 states and 1475 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:54:25,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:25,519 INFO L93 Difference]: Finished difference Result 1340 states and 1479 transitions. [2023-12-02 18:54:25,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:54:25,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-12-02 18:54:25,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:25,526 INFO L225 Difference]: With dead ends: 1340 [2023-12-02 18:54:25,526 INFO L226 Difference]: Without dead ends: 1340 [2023-12-02 18:54:25,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:54:25,526 INFO L413 NwaCegarLoop]: 1157 mSDtfsCounter, 1 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3465 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:25,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3465 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 18:54:25,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2023-12-02 18:54:25,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1340. [2023-12-02 18:54:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 720 states have (on average 2.0069444444444446) internal successors, (1445), 1331 states have internal predecessors, (1445), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-12-02 18:54:25,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1479 transitions. [2023-12-02 18:54:25,544 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1479 transitions. Word has length 59 [2023-12-02 18:54:25,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:25,545 INFO L495 AbstractCegarLoop]: Abstraction has 1340 states and 1479 transitions. [2023-12-02 18:54:25,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:54:25,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1479 transitions. [2023-12-02 18:54:25,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 18:54:25,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:25,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:54:25,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (15)] Ended with exit code 0 [2023-12-02 18:54:25,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:54:25,748 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:54:25,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:25,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1555425892, now seen corresponding path program 1 times [2023-12-02 18:54:25,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:54:25,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759173954] [2023-12-02 18:54:25,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:25,749 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 18:54:25,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:54:25,749 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:54:25,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (16)] Waiting until timeout for monitored process [2023-12-02 18:54:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:26,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:54:26,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:26,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:26,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:26,115 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:54:26,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759173954] [2023-12-02 18:54:26,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759173954] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:26,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [584142072] [2023-12-02 18:54:26,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:26,116 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:54:26,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:54:26,118 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:54:26,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-02 18:54:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:26,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:54:26,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:26,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:26,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [584142072] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:26,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291774636] [2023-12-02 18:54:26,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:26,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:26,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:54:26,609 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:54:26,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 18:54:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:26,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:54:26,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:26,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:26,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:26,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:26,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291774636] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:26,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:54:26,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2023-12-02 18:54:26,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871687211] [2023-12-02 18:54:26,919 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:54:26,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 18:54:26,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:54:26,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 18:54:26,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:54:26,920 INFO L87 Difference]: Start difference. First operand 1340 states and 1479 transitions. Second operand has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:54:28,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:28,800 INFO L93 Difference]: Finished difference Result 1349 states and 1494 transitions. [2023-12-02 18:54:28,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 18:54:28,800 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 60 [2023-12-02 18:54:28,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:28,807 INFO L225 Difference]: With dead ends: 1349 [2023-12-02 18:54:28,807 INFO L226 Difference]: Without dead ends: 1349 [2023-12-02 18:54:28,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-12-02 18:54:28,808 INFO L413 NwaCegarLoop]: 1155 mSDtfsCounter, 6 mSDsluCounter, 3457 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4612 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:28,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4612 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 18:54:28,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2023-12-02 18:54:28,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1348. [2023-12-02 18:54:28,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 727 states have (on average 2.0055020632737275) internal successors, (1458), 1338 states have internal predecessors, (1458), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-12-02 18:54:28,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1492 transitions. [2023-12-02 18:54:28,825 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1492 transitions. Word has length 60 [2023-12-02 18:54:28,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:28,826 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 1492 transitions. [2023-12-02 18:54:28,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:54:28,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1492 transitions. [2023-12-02 18:54:28,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 18:54:28,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:28,827 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:54:28,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (16)] Ended with exit code 0 [2023-12-02 18:54:29,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-12-02 18:54:29,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 18:54:29,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:29,428 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:54:29,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:29,428 INFO L85 PathProgramCache]: Analyzing trace with hash -2118474275, now seen corresponding path program 2 times [2023-12-02 18:54:29,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:54:29,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983150172] [2023-12-02 18:54:29,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:54:29,429 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 18:54:29,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:54:29,430 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:54:29,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (19)] Waiting until timeout for monitored process [2023-12-02 18:54:29,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:54:29,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:54:29,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:54:29,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:29,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:29,998 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:54:29,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983150172] [2023-12-02 18:54:29,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983150172] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:29,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [132266690] [2023-12-02 18:54:29,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:54:29,999 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:54:29,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:54:29,999 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:54:30,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-02 18:54:31,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:54:31,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:54:31,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 18:54:31,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:31,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:31,095 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:31,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [132266690] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:31,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057584884] [2023-12-02 18:54:31,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:54:31,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:31,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:54:31,097 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:54:31,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 18:54:36,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:54:36,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:54:36,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 18:54:36,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:36,391 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:54:36,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:54:36,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 18:54:36,671 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:54:36,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:54:36,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 18:54:36,773 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 18:54:36,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:36,881 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 18:54:36,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2023-12-02 18:54:36,892 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1258 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_1258) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2023-12-02 18:54:36,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057584884] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:54:36,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2023-12-02 18:54:36,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 11] total 24 [2023-12-02 18:54:36,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257198182] [2023-12-02 18:54:36,896 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2023-12-02 18:54:36,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 18:54:36,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:54:36,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 18:54:36,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2023-12-02 18:54:36,898 INFO L87 Difference]: Start difference. First operand 1348 states and 1492 transitions. Second operand has 24 states, 21 states have (on average 5.666666666666667) internal successors, (119), 23 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:54:52,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:52,834 INFO L93 Difference]: Finished difference Result 1418 states and 1528 transitions. [2023-12-02 18:54:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-02 18:54:52,834 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 5.666666666666667) internal successors, (119), 23 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 63 [2023-12-02 18:54:52,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:52,841 INFO L225 Difference]: With dead ends: 1418 [2023-12-02 18:54:52,841 INFO L226 Difference]: Without dead ends: 1416 [2023-12-02 18:54:52,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=455, Invalid=2410, Unknown=1, NotChecked=104, Total=2970 [2023-12-02 18:54:52,842 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 882 mSDsluCounter, 9832 mSDsCounter, 0 mSdLazyCounter, 9868 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 10590 SdHoareTripleChecker+Invalid, 9915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 9868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:52,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 10590 Invalid, 9915 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 9868 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2023-12-02 18:54:52,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2023-12-02 18:54:52,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1356. [2023-12-02 18:54:52,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 736 states have (on average 1.9959239130434783) internal successors, (1469), 1346 states have internal predecessors, (1469), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-12-02 18:54:52,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1503 transitions. [2023-12-02 18:54:52,858 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1503 transitions. Word has length 63 [2023-12-02 18:54:52,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:52,858 INFO L495 AbstractCegarLoop]: Abstraction has 1356 states and 1503 transitions. [2023-12-02 18:54:52,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 5.666666666666667) internal successors, (119), 23 states have internal predecessors, (119), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:54:52,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1503 transitions. [2023-12-02 18:54:52,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 18:54:52,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:52,859 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:54:52,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2023-12-02 18:54:53,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 18:54:53,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (19)] Ended with exit code 0 [2023-12-02 18:54:53,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:54:53,460 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:54:53,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:53,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1226259838, now seen corresponding path program 1 times [2023-12-02 18:54:53,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:54:53,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516024332] [2023-12-02 18:54:53,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:53,461 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 18:54:53,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:54:53,461 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:54:53,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (22)] Waiting until timeout for monitored process [2023-12-02 18:54:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:53,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 18:54:53,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:53,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:54,359 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:54:54,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516024332] [2023-12-02 18:54:54,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516024332] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:54,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1870889998] [2023-12-02 18:54:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:54,359 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:54:54,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:54:54,360 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:54:54,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-02 18:54:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:54,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 18:54:54,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:54,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:55,052 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:55,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1870889998] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:55,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783980889] [2023-12-02 18:54:55,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:55,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:55,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:54:55,054 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:54:55,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 18:54:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:55,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 18:54:55,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:55,446 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:55,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:54:56,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783980889] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:54:56,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:54:56,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2023-12-02 18:54:56,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726645709] [2023-12-02 18:54:56,142 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:54:56,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-02 18:54:56,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:54:56,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-02 18:54:56,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 18:54:56,145 INFO L87 Difference]: Start difference. First operand 1356 states and 1503 transitions. Second operand has 38 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 38 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 18:55:03,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:55:03,279 INFO L93 Difference]: Finished difference Result 1386 states and 1557 transitions. [2023-12-02 18:55:03,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 18:55:03,280 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 38 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 69 [2023-12-02 18:55:03,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:55:03,285 INFO L225 Difference]: With dead ends: 1386 [2023-12-02 18:55:03,285 INFO L226 Difference]: Without dead ends: 1383 [2023-12-02 18:55:03,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1628, Invalid=3342, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 18:55:03,288 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 25 mSDsluCounter, 12650 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 13802 SdHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:55:03,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 13802 Invalid, 2609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-02 18:55:03,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-12-02 18:55:03,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1374. [2023-12-02 18:55:03,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1374 states, 754 states have (on average 1.9787798408488064) internal successors, (1492), 1364 states have internal predecessors, (1492), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-12-02 18:55:03,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1526 transitions. [2023-12-02 18:55:03,305 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1526 transitions. Word has length 69 [2023-12-02 18:55:03,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:55:03,305 INFO L495 AbstractCegarLoop]: Abstraction has 1374 states and 1526 transitions. [2023-12-02 18:55:03,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 38 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 18:55:03,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1526 transitions. [2023-12-02 18:55:03,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 18:55:03,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:55:03,306 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:55:03,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2023-12-02 18:55:03,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 18:55:03,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (22)] Ended with exit code 0 [2023-12-02 18:55:03,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:55:03,907 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:55:03,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:55:03,907 INFO L85 PathProgramCache]: Analyzing trace with hash -262028098, now seen corresponding path program 2 times [2023-12-02 18:55:03,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:55:03,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143732777] [2023-12-02 18:55:03,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:55:03,908 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 18:55:03,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:55:03,909 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:55:03,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (25)] Waiting until timeout for monitored process [2023-12-02 18:55:04,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:55:04,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:55:04,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-02 18:55:04,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:55:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:55:04,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:55:07,084 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:55:07,084 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:55:07,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143732777] [2023-12-02 18:55:07,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143732777] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:55:07,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [20293160] [2023-12-02 18:55:07,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:55:07,085 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:55:07,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:55:07,085 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:55:07,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-12-02 18:55:08,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:55:08,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:55:08,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-02 18:55:08,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:55:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:55:08,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:55:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:55:08,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [20293160] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:55:08,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507900469] [2023-12-02 18:55:08,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 18:55:08,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:55:08,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:55:08,849 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:55:08,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 18:55:20,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 18:55:20,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:55:20,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-02 18:55:20,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:55:20,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:55:20,743 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:55:20,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:55:20,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 18:55:20,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 18:55:21,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 18:55:21,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 18:55:21,686 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:55:21,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:55:21,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 18:55:21,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 18:55:21,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 18:55:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-02 18:55:21,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:55:22,831 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2458 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2458) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv16 32)) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_2457 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2458 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2458) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2457) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 18:55:22,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507900469] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:55:22,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2023-12-02 18:55:22,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26, 26, 9] total 58 [2023-12-02 18:55:22,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446099114] [2023-12-02 18:55:22,837 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2023-12-02 18:55:22,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-02 18:55:22,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:55:22,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-02 18:55:22,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2023-12-02 18:55:22,840 INFO L87 Difference]: Start difference. First operand 1374 states and 1526 transitions. Second operand has 58 states, 55 states have (on average 2.8181818181818183) internal successors, (155), 58 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:56:24,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:56:24,843 INFO L93 Difference]: Finished difference Result 1543 states and 1747 transitions. [2023-12-02 18:56:24,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2023-12-02 18:56:24,844 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 55 states have (on average 2.8181818181818183) internal successors, (155), 58 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 81 [2023-12-02 18:56:24,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:56:24,850 INFO L225 Difference]: With dead ends: 1543 [2023-12-02 18:56:24,850 INFO L226 Difference]: Without dead ends: 1534 [2023-12-02 18:56:24,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7045 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=5889, Invalid=20846, Unknown=1, NotChecked=324, Total=27060 [2023-12-02 18:56:24,858 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 919 mSDsluCounter, 20776 mSDsCounter, 0 mSdLazyCounter, 23619 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 21540 SdHoareTripleChecker+Invalid, 23788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 23619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:56:24,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 21540 Invalid, 23788 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [169 Valid, 23619 Invalid, 0 Unknown, 0 Unchecked, 44.2s Time] [2023-12-02 18:56:24,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2023-12-02 18:56:24,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1458. [2023-12-02 18:56:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 838 states have (on average 1.89618138424821) internal successors, (1589), 1447 states have internal predecessors, (1589), 16 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-12-02 18:56:24,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1623 transitions. [2023-12-02 18:56:24,888 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1623 transitions. Word has length 81 [2023-12-02 18:56:24,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:56:24,888 INFO L495 AbstractCegarLoop]: Abstraction has 1458 states and 1623 transitions. [2023-12-02 18:56:24,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 55 states have (on average 2.8181818181818183) internal successors, (155), 58 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:56:24,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1623 transitions. [2023-12-02 18:56:24,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-02 18:56:24,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:56:24,890 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:56:24,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (25)] Forceful destruction successful, exit code 0 [2023-12-02 18:56:25,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2023-12-02 18:56:25,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 18:56:25,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:56:25,492 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:56:25,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:56:25,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1803847837, now seen corresponding path program 1 times [2023-12-02 18:56:25,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:56:25,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227758735] [2023-12-02 18:56:25,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:56:25,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:56:25,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:56:25,494 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:56:25,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (28)] Waiting until timeout for monitored process [2023-12-02 18:56:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:56:26,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-02 18:56:26,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:56:26,258 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 18:56:26,361 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 18:56:26,361 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 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 18:56:26,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 18:56:26,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-02 18:56:27,372 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:56:27,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:56:27,460 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:56:27,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:56:27,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 18:56:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:56:27,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:56:29,617 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2864 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2864) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-12-02 18:56:30,002 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2864 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2910 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2910))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2864)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:56:30,004 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:56:30,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227758735] [2023-12-02 18:56:30,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227758735] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:56:30,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [672587223] [2023-12-02 18:56:30,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:56:30,005 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:56:30,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:56:30,006 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:56:30,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-12-02 18:56:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:56:33,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-02 18:56:33,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:56:33,125 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 18:56:33,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-12-02 18:56:33,541 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-12-02 18:56:33,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-12-02 18:56:33,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-12-02 18:56:34,227 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:56:34,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 18:56:34,398 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:56:34,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 18:56:34,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-12-02 18:56:34,464 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:56:34,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:56:36,937 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2023-12-02 18:56:36,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2023-12-02 18:56:36,948 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2864 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3361 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3361))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2864)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem33#1.base|)) is different from false [2023-12-02 18:56:36,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [672587223] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:56:36,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819861030] [2023-12-02 18:56:36,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:56:36,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:56:36,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:56:36,952 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:56:36,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 18:56:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:56:37,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-02 18:56:37,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:56:37,519 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 18:56:37,624 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:56:37,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:56:37,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 18:56:38,208 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:56:38,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:56:38,399 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:56:38,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:56:38,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 18:56:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:56:38,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:56:39,038 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2023-12-02 18:56:39,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2023-12-02 18:56:39,049 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2864 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3812))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2864)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2023-12-02 18:56:39,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819861030] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:56:39,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:56:39,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2023-12-02 18:56:39,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823895728] [2023-12-02 18:56:39,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:56:39,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-02 18:56:39,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:56:39,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-02 18:56:39,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=708, Unknown=7, NotChecked=228, Total=1056 [2023-12-02 18:56:39,054 INFO L87 Difference]: Start difference. First operand 1458 states and 1623 transitions. Second operand has 27 states, 23 states have (on average 5.739130434782608) internal successors, (132), 26 states have internal predecessors, (132), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 18:57:07,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:07,506 INFO L93 Difference]: Finished difference Result 2737 states and 2961 transitions. [2023-12-02 18:57:07,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 18:57:07,507 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 5.739130434782608) internal successors, (132), 26 states have internal predecessors, (132), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 105 [2023-12-02 18:57:07,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:07,515 INFO L225 Difference]: With dead ends: 2737 [2023-12-02 18:57:07,515 INFO L226 Difference]: Without dead ends: 2737 [2023-12-02 18:57:07,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 296 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=247, Invalid=1568, Unknown=7, NotChecked=340, Total=2162 [2023-12-02 18:57:07,517 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 3343 mSDsluCounter, 11442 mSDsCounter, 0 mSdLazyCounter, 15090 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3366 SdHoareTripleChecker+Valid, 12185 SdHoareTripleChecker+Invalid, 15214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 15090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:07,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3366 Valid, 12185 Invalid, 15214 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 15090 Invalid, 0 Unknown, 0 Unchecked, 27.6s Time] [2023-12-02 18:57:07,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2023-12-02 18:57:07,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 1457. [2023-12-02 18:57:07,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 838 states have (on average 1.8949880668257757) internal successors, (1588), 1446 states have internal predecessors, (1588), 16 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-12-02 18:57:07,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1622 transitions. [2023-12-02 18:57:07,541 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1622 transitions. Word has length 105 [2023-12-02 18:57:07,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:07,541 INFO L495 AbstractCegarLoop]: Abstraction has 1457 states and 1622 transitions. [2023-12-02 18:57:07,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 5.739130434782608) internal successors, (132), 26 states have internal predecessors, (132), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 18:57:07,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1622 transitions. [2023-12-02 18:57:07,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-02 18:57:07,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:07,542 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:57:07,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (28)] Ended with exit code 0 [2023-12-02 18:57:07,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 18:57:07,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2023-12-02 18:57:08,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 18:57:08,143 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:57:08,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:08,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1803847838, now seen corresponding path program 1 times [2023-12-02 18:57:08,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:57:08,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066108234] [2023-12-02 18:57:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:08,144 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 18:57:08,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:57:08,145 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:57:08,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (31)] Waiting until timeout for monitored process [2023-12-02 18:57:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:08,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 111 conjunts are in the unsatisfiable core [2023-12-02 18:57:08,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:57:08,954 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 18:57:09,062 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:57:09,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:57:09,071 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 5 [2023-12-02 18:57:09,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 18:57:09,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 18:57:09,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 18:57:09,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 18:57:09,918 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:57:09,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:57:09,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 18:57:10,042 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:57:10,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:57:10,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 18:57:10,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 18:57:10,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 18:57:10,118 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:57:10,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:57:10,325 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4265 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4264 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4265) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_4264 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv4 32)) (bvadd .cse1 (_ bv8 32))))))) is different from false [2023-12-02 18:57:10,385 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_4264 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_4264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4265 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4264 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_4264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_4265) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 18:57:11,748 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4357 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4356 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4265 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4264 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4356))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4357) .cse0 v_ArrVal_4264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_4265) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_4357 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4356 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4264 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4357) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4356) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4264) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2023-12-02 18:57:11,757 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:57:11,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066108234] [2023-12-02 18:57:11,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066108234] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:57:11,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1594159464] [2023-12-02 18:57:11,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:11,758 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:57:11,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:57:11,758 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:57:11,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2023-12-02 18:59:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:59:02,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 113 conjunts are in the unsatisfiable core [2023-12-02 18:59:02,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:59:02,947 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 18:59:03,230 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:59:03,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:59:03,241 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 5 [2023-12-02 18:59:03,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 18:59:03,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 18:59:03,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-02 18:59:03,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 18:59:04,125 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:59:04,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 18:59:04,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 18:59:04,305 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:59:04,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 18:59:04,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 18:59:04,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 18:59:04,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 18:59:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:59:04,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:59:04,412 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4810 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4809 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4809) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4810) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_4809 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4809) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv4 32)) (bvadd .cse1 (_ bv8 32))))))) is different from false [2023-12-02 18:59:04,448 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_4809 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_4809) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4810 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4809 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_4809) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_4810) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 18:59:05,786 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4902 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4901 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4809 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4901) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4902) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4809) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4902 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4901 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4810 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4809 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4902))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4901) .cse2 v_ArrVal_4809) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_4810) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-12-02 18:59:05,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1594159464] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:59:05,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064996093] [2023-12-02 18:59:05,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:59:05,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:59:05,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:59:05,796 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:59:05,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 18:59:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:59:06,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 111 conjunts are in the unsatisfiable core [2023-12-02 18:59:06,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:59:06,373 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 18:59:06,467 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:59:06,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:59:06,474 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 5 [2023-12-02 18:59:06,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 18:59:06,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 18:59:06,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 18:59:06,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 18:59:07,197 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:59:07,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:59:07,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 18:59:07,284 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:59:07,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 18:59:07,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 18:59:07,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 18:59:07,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 18:59:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:59:07,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:59:07,373 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5355 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5355) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5355 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5354 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5355) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5354) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 18:59:07,409 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5355 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5355) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5355 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5354 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5355) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_5354) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 18:59:08,718 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5447 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5355 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5446 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5446) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5447) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5355) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5447 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5355 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5446 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5354 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5447))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5446) .cse2 v_ArrVal_5355) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5354) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-12-02 18:59:08,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064996093] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:59:08,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:59:08,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-12-02 18:59:08,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596061773] [2023-12-02 18:59:08,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:59:08,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 18:59:08,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:59:08,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 18:59:08,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=231, Unknown=9, NotChecked=342, Total=650 [2023-12-02 18:59:08,729 INFO L87 Difference]: Start difference. First operand 1457 states and 1622 transitions. Second operand has 15 states, 12 states have (on average 9.666666666666666) internal successors, (116), 15 states have internal predecessors, (116), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:59:25,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:59:25,061 INFO L93 Difference]: Finished difference Result 1810 states and 1944 transitions. [2023-12-02 18:59:25,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 18:59:25,061 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 9.666666666666666) internal successors, (116), 15 states have internal predecessors, (116), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 105 [2023-12-02 18:59:25,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:59:25,065 INFO L225 Difference]: With dead ends: 1810 [2023-12-02 18:59:25,065 INFO L226 Difference]: Without dead ends: 1810 [2023-12-02 18:59:25,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 301 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=378, Unknown=9, NotChecked=432, Total=930 [2023-12-02 18:59:25,066 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 1122 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 7768 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 4168 SdHoareTripleChecker+Invalid, 7787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 7768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:59:25,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 4168 Invalid, 7787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 7768 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2023-12-02 18:59:25,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2023-12-02 18:59:25,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1456. [2023-12-02 18:59:25,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 838 states have (on average 1.8937947494033414) internal successors, (1587), 1445 states have internal predecessors, (1587), 16 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-12-02 18:59:25,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1621 transitions. [2023-12-02 18:59:25,083 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1621 transitions. Word has length 105 [2023-12-02 18:59:25,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:59:25,083 INFO L495 AbstractCegarLoop]: Abstraction has 1456 states and 1621 transitions. [2023-12-02 18:59:25,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 9.666666666666666) internal successors, (116), 15 states have internal predecessors, (116), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:59:25,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1621 transitions. [2023-12-02 18:59:25,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-02 18:59:25,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:59:25,084 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:59:25,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2023-12-02 18:59:25,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (31)] Ended with exit code 0 [2023-12-02 18:59:25,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 18:59:25,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:59:25,685 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 18:59:25,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:59:25,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1666770889, now seen corresponding path program 1 times [2023-12-02 18:59:25,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:59:25,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623962859] [2023-12-02 18:59:25,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:59:25,686 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 18:59:25,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:59:25,687 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 18:59:25,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (34)] Waiting until timeout for monitored process [2023-12-02 18:59:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:59:26,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-02 18:59:26,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:59:26,637 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 18:59:26,749 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 18:59:26,749 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 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 18:59:26,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 18:59:26,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-02 18:59:27,701 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:59:27,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:59:27,827 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:59:27,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:59:27,914 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:59:27,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:59:27,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 18:59:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:59:27,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:59:28,023 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5869 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5869) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:59:28,033 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5869 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5869) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-12-02 18:59:28,046 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5869 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5868 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5868))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5869)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:59:28,058 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5869 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5868 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5868))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5869)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:59:28,455 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5869 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5915 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5868 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5915))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5868)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5869)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 18:59:28,458 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:59:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623962859] [2023-12-02 18:59:28,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623962859] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:59:28,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [736496535] [2023-12-02 18:59:28,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:59:28,459 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:59:28,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:59:28,460 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:59:28,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-12-02 18:59:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:59:53,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-02 18:59:53,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:59:53,494 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 18:59:53,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-12-02 18:59:53,902 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-12-02 18:59:53,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-12-02 18:59:53,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-12-02 18:59:54,564 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:59:54,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 18:59:54,742 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:59:54,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 18:59:54,834 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:59:54,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 18:59:54,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-12-02 18:59:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:59:54,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:59:54,905 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6336 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6336) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-12-02 18:59:54,922 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6336 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6336) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-12-02 18:59:54,935 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6336 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6335))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6336)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 18:59:54,947 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6336 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6335))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6336)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 18:59:55,344 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2023-12-02 18:59:55,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 60 [2023-12-02 18:59:55,360 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6382 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6336 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6382))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6335)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6336)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem33#1.base|)) is different from false [2023-12-02 18:59:55,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [736496535] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:59:55,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103336819] [2023-12-02 18:59:55,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:59:55,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:59:55,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:59:55,364 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:59:55,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-02 18:59:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:59:56,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-02 18:59:56,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:59:56,030 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 18:59:56,117 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 18:59:56,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 18:59:56,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 18:59:56,526 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:59:56,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 18:59:56,631 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:59:56,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 18:59:56,712 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 18:59:56,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 18:59:56,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 18:59:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 18:59:56,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:59:56,793 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 18:59:56,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2023-12-02 18:59:56,800 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6803 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6803) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2023-12-02 18:59:56,811 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6803 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_6803) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2023-12-02 18:59:56,822 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6802 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6803 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6802)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6803) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2023-12-02 18:59:56,834 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6802 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6803 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6802))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6803) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2023-12-02 18:59:57,238 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6849 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6802 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6803 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6849))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6802)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6803) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2023-12-02 18:59:57,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103336819] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:59:57,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:59:57,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 30 [2023-12-02 18:59:57,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884571262] [2023-12-02 18:59:57,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:59:57,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-02 18:59:57,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:59:57,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-02 18:59:57,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=883, Unknown=15, NotChecked=1110, Total=2162 [2023-12-02 18:59:57,243 INFO L87 Difference]: Start difference. First operand 1456 states and 1621 transitions. Second operand has 31 states, 27 states have (on average 5.2592592592592595) internal successors, (142), 31 states have internal predecessors, (142), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:00:19,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:00:19,238 INFO L93 Difference]: Finished difference Result 2733 states and 2957 transitions. [2023-12-02 19:00:19,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 19:00:19,239 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 5.2592592592592595) internal successors, (142), 31 states have internal predecessors, (142), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 107 [2023-12-02 19:00:19,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:00:19,243 INFO L225 Difference]: With dead ends: 2733 [2023-12-02 19:00:19,243 INFO L226 Difference]: Without dead ends: 2733 [2023-12-02 19:00:19,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=310, Invalid=1897, Unknown=15, NotChecked=1560, Total=3782 [2023-12-02 19:00:19,244 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 3349 mSDsluCounter, 8988 mSDsCounter, 0 mSdLazyCounter, 11679 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3372 SdHoareTripleChecker+Valid, 9730 SdHoareTripleChecker+Invalid, 11833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 11679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:00:19,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3372 Valid, 9730 Invalid, 11833 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [154 Valid, 11679 Invalid, 0 Unknown, 0 Unchecked, 21.1s Time] [2023-12-02 19:00:19,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2023-12-02 19:00:19,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 1455. [2023-12-02 19:00:19,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 838 states have (on average 1.892601431980907) internal successors, (1586), 1444 states have internal predecessors, (1586), 16 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-12-02 19:00:19,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1620 transitions. [2023-12-02 19:00:19,262 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1620 transitions. Word has length 107 [2023-12-02 19:00:19,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:00:19,262 INFO L495 AbstractCegarLoop]: Abstraction has 1455 states and 1620 transitions. [2023-12-02 19:00:19,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 5.2592592592592595) internal successors, (142), 31 states have internal predecessors, (142), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:00:19,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1620 transitions. [2023-12-02 19:00:19,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-02 19:00:19,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:00:19,263 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:00:19,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-02 19:00:19,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2023-12-02 19:00:19,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (34)] Forceful destruction successful, exit code 0 [2023-12-02 19:00:19,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 19:00:19,864 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 19:00:19,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:00:19,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1666770888, now seen corresponding path program 1 times [2023-12-02 19:00:19,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:00:19,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213448049] [2023-12-02 19:00:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:00:19,865 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 19:00:19,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:00:19,866 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 19:00:19,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (37)] Waiting until timeout for monitored process [2023-12-02 19:00:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:00:20,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 114 conjunts are in the unsatisfiable core [2023-12-02 19:00:20,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:00:20,895 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 19:00:20,978 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 19:00:20,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 19:00:20,985 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 5 [2023-12-02 19:00:21,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 19:00:21,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 19:00:21,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 19:00:21,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 19:00:21,765 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 19:00:21,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 19:00:21,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 19:00:21,887 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 19:00:21,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 19:00:21,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 19:00:21,987 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 19:00:21,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 19:00:21,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 19:00:22,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 19:00:22,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 19:00:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 19:00:22,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:00:22,216 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7319 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7319) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7318 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7319 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7319) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7318) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 19:00:22,246 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_7318 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7319 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7319) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_7318) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_7319 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7319) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv8 32)) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2023-12-02 19:00:22,343 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7317 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7318 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7319 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7316 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7316))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7317) .cse0 v_ArrVal_7319) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7318) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7317 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7319 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7316 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7317) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7316) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7319) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd .cse3 (_ bv12 32))))))) is different from false [2023-12-02 19:00:22,457 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7317 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7318 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7319 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7316 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_7316))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7317) .cse1 v_ArrVal_7319) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7318) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7317 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7319 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7316 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7317) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_7316) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7319) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2023-12-02 19:00:23,789 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7317 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7319 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7316 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7410 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7411 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7410))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7411) .cse1 v_ArrVal_7317) (select (select (store .cse2 .cse1 v_ArrVal_7316) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7319))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7317 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7318 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7319 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7316 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7410 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7411 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7410))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_7316))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7411) .cse4 v_ArrVal_7317) .cse5 v_ArrVal_7319) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_7318) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-12-02 19:00:23,798 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:00:23,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213448049] [2023-12-02 19:00:23,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213448049] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:00:23,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1733625359] [2023-12-02 19:00:23,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:00:23,799 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 19:00:23,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 19:00:23,800 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 19:00:23,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2023-12-02 19:05:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:05:02,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 117 conjunts are in the unsatisfiable core [2023-12-02 19:05:02,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:05:02,928 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 19:05:03,202 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 19:05:03,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 19:05:03,210 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 5 [2023-12-02 19:05:03,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 19:05:03,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 19:05:03,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-02 19:05:03,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 19:05:03,996 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 19:05:03,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 19:05:04,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 19:05:04,165 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 19:05:04,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 19:05:04,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 19:05:04,271 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 19:05:04,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 19:05:04,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 19:05:04,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 19:05:04,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 19:05:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 19:05:04,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:05:04,364 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7880 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7881 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7880) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7881) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_7880 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7880) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32))))))) is different from false [2023-12-02 19:05:04,399 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_7880 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7881 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7880) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_7881) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_7880 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7880) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2023-12-02 19:05:04,557 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7880 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7879 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7878 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7881 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7879))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7878) .cse0 v_ArrVal_7880) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7881) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7880 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7879 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7878 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7878) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7879) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7880) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd .cse3 (_ bv12 32))))))) is different from false [2023-12-02 19:05:04,692 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7880 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7879 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7878 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_7878) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_7879) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7880) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7880 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7879 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7878 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7881 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_7879))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_7878) .cse3 v_ArrVal_7880) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_7881) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2023-12-02 19:05:06,722 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7880 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7879 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7878 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7973 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7972 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7972))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7973) .cse1 v_ArrVal_7878) (select (select (store .cse2 .cse1 v_ArrVal_7879) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7880))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7880 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7879 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7878 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7973 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7972 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7881 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7972))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_7879))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7973) .cse4 v_ArrVal_7878) .cse5 v_ArrVal_7880) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_7881) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-12-02 19:05:06,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1733625359] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:05:06,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817530121] [2023-12-02 19:05:06,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:05:06,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:05:06,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:05:06,740 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:05:06,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-02 19:05:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:05:07,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 114 conjunts are in the unsatisfiable core [2023-12-02 19:05:07,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:05:07,455 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 19:05:07,640 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 19:05:07,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 19:05:07,654 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 5 [2023-12-02 19:05:07,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 19:05:07,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 19:05:07,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 19:05:07,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 19:05:08,667 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 19:05:08,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 19:05:08,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 19:05:08,777 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 19:05:08,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 19:05:08,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 19:05:08,859 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 19:05:08,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 19:05:08,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 19:05:08,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 19:05:08,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 19:05:08,904 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 19:05:08,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:05:08,966 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8442 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8442) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8443 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8442 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8442) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8443) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 19:05:09,008 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8442 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8442) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8443 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8442 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8442) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_8443) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 19:05:09,166 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8441 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8440 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8442 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8440) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8441) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8442) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8441 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8440 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8443 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8442 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8441))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8440) .cse2 v_ArrVal_8442) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_8443) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-12-02 19:05:09,288 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8441 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8440 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8443 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8442 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8441))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8440) .cse1 v_ArrVal_8442) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8443) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_8441 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8440 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8442 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8440) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8441) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8442) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2023-12-02 19:05:11,686 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8441 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8440 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8535 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8534 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8442 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8535))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8534) .cse1 v_ArrVal_8440) (select (select (store .cse2 .cse1 v_ArrVal_8441) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8442))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8441 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8440 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8535 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8534 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8443 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8442 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8535))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_8441))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8534) .cse4 v_ArrVal_8440) .cse5 v_ArrVal_8442) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_8443) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-12-02 19:05:11,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817530121] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:05:11,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:05:11,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2023-12-02 19:05:11,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297062716] [2023-12-02 19:05:11,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:05:11,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 19:05:11,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:05:11,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 19:05:11,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=297, Unknown=15, NotChecked=720, Total=1122 [2023-12-02 19:05:11,705 INFO L87 Difference]: Start difference. First operand 1455 states and 1620 transitions. Second operand has 17 states, 14 states have (on average 8.571428571428571) internal successors, (120), 17 states have internal predecessors, (120), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:05:58,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:05:58,344 INFO L93 Difference]: Finished difference Result 1808 states and 1942 transitions. [2023-12-02 19:05:58,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 19:05:58,344 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 8.571428571428571) internal successors, (120), 17 states have internal predecessors, (120), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 107 [2023-12-02 19:05:58,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:05:58,348 INFO L225 Difference]: With dead ends: 1808 [2023-12-02 19:05:58,348 INFO L226 Difference]: Without dead ends: 1808 [2023-12-02 19:05:58,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 305 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=143, Invalid=502, Unknown=15, NotChecked=900, Total=1560 [2023-12-02 19:05:58,349 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 1117 mSDsluCounter, 4559 mSDsCounter, 0 mSdLazyCounter, 10488 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 5326 SdHoareTripleChecker+Invalid, 10507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 10488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:05:58,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 5326 Invalid, 10507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 10488 Invalid, 0 Unknown, 0 Unchecked, 45.9s Time] [2023-12-02 19:05:58,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2023-12-02 19:05:58,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1454. [2023-12-02 19:05:58,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 838 states have (on average 1.8914081145584725) internal successors, (1585), 1443 states have internal predecessors, (1585), 16 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-12-02 19:05:58,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1619 transitions. [2023-12-02 19:05:58,367 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1619 transitions. Word has length 107 [2023-12-02 19:05:58,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:05:58,368 INFO L495 AbstractCegarLoop]: Abstraction has 1454 states and 1619 transitions. [2023-12-02 19:05:58,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 8.571428571428571) internal successors, (120), 17 states have internal predecessors, (120), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:05:58,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1619 transitions. [2023-12-02 19:05:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 19:05:58,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:05:58,369 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:05:58,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (37)] Ended with exit code 0 [2023-12-02 19:05:58,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-02 19:05:58,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2023-12-02 19:05:58,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 19:05:58,970 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-12-02 19:05:58,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:05:58,971 INFO L85 PathProgramCache]: Analyzing trace with hash 258217836, now seen corresponding path program 1 times [2023-12-02 19:05:58,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:05:58,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898818354] [2023-12-02 19:05:58,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:05:58,971 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 19:05:58,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:05:58,972 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 19:05:58,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/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 (40)] Waiting until timeout for monitored process [2023-12-02 19:06:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:06:00,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-02 19:06:00,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:06:00,285 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 19:06:00,658 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 19:06:00,658 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 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 19:06:00,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 19:06:00,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-12-02 19:06:02,833 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 19:06:02,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 19:06:03,072 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 19:06:03,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 19:06:03,277 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 19:06:03,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 19:06:03,492 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 19:06:03,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 19:06:03,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 19:06:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 19:06:03,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:06:03,776 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8973 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8973) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-12-02 19:06:03,802 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8973 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8973) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2023-12-02 19:06:03,832 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8973 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8972 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8972))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8973)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 19:06:03,861 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8973 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8972 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8972))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8973)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 19:06:03,894 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8973 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8972 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8971 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8971))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8972)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8973)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 19:06:03,928 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8973 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8972 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8971 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8971))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8972)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8973)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 19:06:04,777 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:06:04,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898818354] [2023-12-02 19:06:04,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898818354] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:06:04,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1443555689] [2023-12-02 19:06:04,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:06:04,777 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 19:06:04,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 19:06:04,778 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 19:06:04,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2023-12-02 19:07:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:07:25,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-02 19:07:25,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:07:25,524 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 19:07:25,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-12-02 19:07:26,610 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-12-02 19:07:26,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-12-02 19:07:26,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-12-02 19:07:28,334 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 19:07:28,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 19:07:28,764 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 19:07:28,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 19:07:29,025 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 19:07:29,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 19:07:29,290 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 19:07:29,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-12-02 19:07:29,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-12-02 19:07:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 19:07:29,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:07:31,749 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9456 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_9456) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2023-12-02 19:07:31,778 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9456 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9455 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9455))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9456)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 19:07:31,807 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9456 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9455 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9455))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9456)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 19:07:31,838 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9456 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9455 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9454 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_9454))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9455)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9456)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 19:07:31,871 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9456 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9455 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9454 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9454))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9455)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9456)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 19:07:32,565 INFO L349 Elim1Store]: treesize reduction 7, result has 93.2 percent of original size [2023-12-02 19:07:32,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 108 [2023-12-02 19:07:32,589 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9502 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9456 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9455 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9454 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_9502))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9454)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9455)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9456)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2023-12-02 19:07:32,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1443555689] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:07:32,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917442028] [2023-12-02 19:07:32,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:07:32,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:07:32,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:07:32,597 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:07:32,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a447871-e685-4081-9939-54198f1571e6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-02 19:07:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:07:33,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-02 19:07:33,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:07:33,353 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 19:07:33,669 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 19:07:33,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 19:07:33,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 19:07:34,825 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 19:07:34,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 19:07:35,060 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 19:07:35,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 19:07:35,301 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 19:07:35,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 19:07:35,548 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 19:07:35,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 19:07:35,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 19:07:35,765 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 19:07:35,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:07:35,812 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 19:07:35,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2023-12-02 19:07:36,192 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9939 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_9939) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2023-12-02 19:07:36,213 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9939 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9938 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9938)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_9939) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2023-12-02 19:07:36,235 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9939 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9938 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9938))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_9939) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2023-12-02 19:07:36,260 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9939 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9938 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_9937))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9938)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_9939) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2023-12-02 19:07:36,284 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9939 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9938 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9937))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9938)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_9939) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2023-12-02 19:07:36,909 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9939 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9938 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9985 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_9985))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9937)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9938)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_9939) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2023-12-02 19:07:36,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917442028] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:07:36,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:07:36,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 12] total 33 [2023-12-02 19:07:36,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255327920] [2023-12-02 19:07:36,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:07:36,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-02 19:07:36,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:07:36,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-02 19:07:36,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1236, Unknown=51, NotChecked=1602, Total=3080 [2023-12-02 19:07:36,918 INFO L87 Difference]: Start difference. First operand 1454 states and 1619 transitions. Second operand has 34 states, 30 states have (on average 4.933333333333334) internal successors, (148), 34 states have internal predecessors, (148), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)