./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 64bit --witnessprinter.graph.data.programhash 7fb5800c8758888815eae44b37eaf9bc49d0baa078e11009154801fa3e07455f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:59:59,762 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:59:59,829 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2023-12-02 12:59:59,834 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:59:59,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:59:59,867 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:59:59,867 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:59:59,868 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:59:59,869 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:59:59,869 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:59:59,870 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:59:59,870 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:59:59,871 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:59:59,872 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:59:59,872 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:59:59,873 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:59:59,873 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:59:59,874 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:59:59,874 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:59:59,875 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:59:59,875 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:59:59,876 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:59:59,876 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 12:59:59,877 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 12:59:59,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:59:59,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:59:59,885 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:59:59,886 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 12:59:59,886 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 12:59:59,887 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 12:59:59,887 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:59:59,887 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 12:59:59,888 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 12:59:59,888 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:59:59,888 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:59:59,888 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:59:59,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:59:59,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:59:59,889 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:59:59,889 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:59:59,889 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:59:59,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:59:59,890 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:59:59,890 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:59:59,890 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:59:59,890 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_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fb5800c8758888815eae44b37eaf9bc49d0baa078e11009154801fa3e07455f [2023-12-02 13:00:00,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:00:00,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:00:00,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:00:00,105 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:00:00,105 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:00:00,106 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-2.i [2023-12-02 13:00:02,833 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:00:03,146 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:00:03,147 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-2.i [2023-12-02 13:00:03,171 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/data/82332bfb2/e4a282999c664adc8dd6c87c9f76c819/FLAGdc09040a7 [2023-12-02 13:00:03,184 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/data/82332bfb2/e4a282999c664adc8dd6c87c9f76c819 [2023-12-02 13:00:03,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:00:03,187 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:00:03,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:00:03,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:00:03,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:00:03,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:00:03" (1/1) ... [2023-12-02 13:00:03,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e2ee6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:03, skipping insertion in model container [2023-12-02 13:00:03,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:00:03" (1/1) ... [2023-12-02 13:00:03,255 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:00:04,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:00:04,408 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 13:00:04,409 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3fe6767e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:04, skipping insertion in model container [2023-12-02 13:00:04,409 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:00:04,410 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 13:00:04,411 INFO L158 Benchmark]: Toolchain (without parser) took 1223.69ms. Allocated memory is still 138.4MB. Free memory was 92.5MB in the beginning and 63.2MB in the end (delta: 29.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-12-02 13:00:04,412 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:00:04,412 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1221.79ms. Allocated memory is still 138.4MB. Free memory was 92.0MB in the beginning and 63.2MB in the end (delta: 28.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-12-02 13:00:04,414 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1221.79ms. Allocated memory is still 138.4MB. Free memory was 92.0MB in the beginning and 63.2MB in the end (delta: 28.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2428]: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 64bit --witnessprinter.graph.data.programhash 7fb5800c8758888815eae44b37eaf9bc49d0baa078e11009154801fa3e07455f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:00:06,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:00:06,292 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2023-12-02 13:00:06,299 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:00:06,299 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:00:06,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:00:06,329 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:00:06,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:00:06,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:00:06,331 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:00:06,331 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:00:06,332 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:00:06,333 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:00:06,333 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:00:06,334 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:00:06,334 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:00:06,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 13:00:06,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 13:00:06,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:00:06,337 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:00:06,337 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:00:06,338 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 13:00:06,338 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 13:00:06,339 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 13:00:06,339 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:00:06,340 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:00:06,340 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 13:00:06,340 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 13:00:06,341 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:00:06,341 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:00:06,342 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:00:06,342 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 13:00:06,342 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:00:06,343 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:00:06,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:00:06,343 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:00:06,343 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:00:06,344 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 13:00:06,344 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 13:00:06,344 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:00:06,344 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:00:06,345 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:00:06,345 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_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fb5800c8758888815eae44b37eaf9bc49d0baa078e11009154801fa3e07455f [2023-12-02 13:00:06,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:00:06,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:00:06,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:00:06,656 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:00:06,657 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:00:06,658 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-2.i [2023-12-02 13:00:09,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:00:09,808 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:00:09,809 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-2.i [2023-12-02 13:00:09,834 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/data/b376f74b8/433435bf9aca416aa4a37a5405f9d961/FLAGa4b1abc64 [2023-12-02 13:00:09,849 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/data/b376f74b8/433435bf9aca416aa4a37a5405f9d961 [2023-12-02 13:00:09,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:00:09,854 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:00:09,855 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:00:09,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:00:09,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:00:09,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:00:09" (1/1) ... [2023-12-02 13:00:09,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c1b9f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:09, skipping insertion in model container [2023-12-02 13:00:09,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:00:09" (1/1) ... [2023-12-02 13:00:09,938 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:00:10,918 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:00:10,942 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 13:00:10,961 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:00:11,059 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:00:11,070 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:00:11,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:00:11,368 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:00:11,368 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:00:11,374 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:00:11,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:11 WrapperNode [2023-12-02 13:00:11,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:00:11,375 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:00:11,375 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:00:11,375 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:00:11,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:11" (1/1) ... [2023-12-02 13:00:11,426 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:11" (1/1) ... [2023-12-02 13:00:11,490 INFO L138 Inliner]: procedures = 629, calls = 250, calls flagged for inlining = 25, calls inlined = 23, statements flattened = 692 [2023-12-02 13:00:11,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:00:11,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:00:11,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:00:11,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:00:11,503 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:11" (1/1) ... [2023-12-02 13:00:11,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:11" (1/1) ... [2023-12-02 13:00:11,517 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:11" (1/1) ... [2023-12-02 13:00:11,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:11" (1/1) ... [2023-12-02 13:00:11,557 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:11" (1/1) ... [2023-12-02 13:00:11,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:11" (1/1) ... [2023-12-02 13:00:11,575 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:11" (1/1) ... [2023-12-02 13:00:11,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:11" (1/1) ... [2023-12-02 13:00:11,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:00:11,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:00:11,595 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:00:11,595 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:00:11,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:11" (1/1) ... [2023-12-02 13:00:11,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:00:11,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:11,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:00:11,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:00:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure execvp [2023-12-02 13:00:11,662 INFO L138 BoogieDeclarations]: Found implementation of procedure execvp [2023-12-02 13:00:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-12-02 13:00:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:00:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 13:00:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-12-02 13:00:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 13:00:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-12-02 13:00:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:00:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 13:00:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-12-02 13:00:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-12-02 13:00:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-12-02 13:00:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-12-02 13:00:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:00:11,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:00:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 13:00:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-12-02 13:00:11,664 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-12-02 13:00:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 13:00:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 13:00:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 13:00:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-12-02 13:00:11,665 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-12-02 13:00:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:00:11,665 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:00:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:00:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 13:00:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-12-02 13:00:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 13:00:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 13:00:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-12-02 13:00:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-12-02 13:00:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-12-02 13:00:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-12-02 13:00:12,025 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:00:12,027 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:00:17,238 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:00:17,358 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:00:17,359 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-12-02 13:00:17,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:00:17 BoogieIcfgContainer [2023-12-02 13:00:17,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:00:17,362 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:00:17,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:00:17,366 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:00:17,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:00:09" (1/3) ... [2023-12-02 13:00:17,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58809a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:00:17, skipping insertion in model container [2023-12-02 13:00:17,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:11" (2/3) ... [2023-12-02 13:00:17,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58809a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:00:17, skipping insertion in model container [2023-12-02 13:00:17,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:00:17" (3/3) ... [2023-12-02 13:00:17,369 INFO L112 eAbstractionObserver]: Analyzing ICFG chroot-incomplete-2.i [2023-12-02 13:00:17,389 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:00:17,390 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 199 error locations. [2023-12-02 13:00:17,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:00:17,452 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;@46c7519b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:00:17,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 199 error locations. [2023-12-02 13:00:17,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 435 states, 216 states have (on average 2.1805555555555554) internal successors, (471), 415 states have internal predecessors, (471), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 13:00:17,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 13:00:17,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:17,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 13:00:17,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:00:17,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:17,471 INFO L85 PathProgramCache]: Analyzing trace with hash 28420, now seen corresponding path program 1 times [2023-12-02 13:00:17,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:00:17,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511002336] [2023-12-02 13:00:17,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:17,487 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 13:00:17,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:00:17,490 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:17,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:17,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:00:17,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:17,870 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 13:00:17,887 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 13:00:17,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:00:17,888 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:00:17,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511002336] [2023-12-02 13:00:17,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511002336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:17,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:17,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 13:00:17,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40545557] [2023-12-02 13:00:17,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:17,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:00:17,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:00:17,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:00:17,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:17,926 INFO L87 Difference]: Start difference. First operand has 435 states, 216 states have (on average 2.1805555555555554) internal successors, (471), 415 states have internal predecessors, (471), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:19,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:19,485 INFO L93 Difference]: Finished difference Result 445 states and 497 transitions. [2023-12-02 13:00:19,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:00:19,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-12-02 13:00:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:19,499 INFO L225 Difference]: With dead ends: 445 [2023-12-02 13:00:19,499 INFO L226 Difference]: Without dead ends: 444 [2023-12-02 13:00:19,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:19,504 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 188 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:19,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 512 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 13:00:19,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-12-02 13:00:19,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 427. [2023-12-02 13:00:19,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 213 states have (on average 2.1173708920187795) internal successors, (451), 410 states have internal predecessors, (451), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:00:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 478 transitions. [2023-12-02 13:00:19,570 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 478 transitions. Word has length 2 [2023-12-02 13:00:19,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:19,570 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 478 transitions. [2023-12-02 13:00:19,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:19,571 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 478 transitions. [2023-12-02 13:00:19,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 13:00:19,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:19,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 13:00:19,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:19,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:19,772 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:00:19,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:19,773 INFO L85 PathProgramCache]: Analyzing trace with hash 28421, now seen corresponding path program 1 times [2023-12-02 13:00:19,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:00:19,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316957771] [2023-12-02 13:00:19,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:19,774 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 13:00:19,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:00:19,776 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:19,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:20,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:00:20,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:20,021 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 13:00:20,051 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 13:00:20,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:00:20,051 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:00:20,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316957771] [2023-12-02 13:00:20,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316957771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:20,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:20,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 13:00:20,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680453311] [2023-12-02 13:00:20,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:20,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:00:20,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:00:20,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:00:20,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:20,055 INFO L87 Difference]: Start difference. First operand 427 states and 478 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:22,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:22,701 INFO L93 Difference]: Finished difference Result 426 states and 477 transitions. [2023-12-02 13:00:22,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:00:22,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-12-02 13:00:22,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:22,705 INFO L225 Difference]: With dead ends: 426 [2023-12-02 13:00:22,705 INFO L226 Difference]: Without dead ends: 426 [2023-12-02 13:00:22,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:22,707 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 9 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:22,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 680 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 13:00:22,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-12-02 13:00:22,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2023-12-02 13:00:22,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 213 states have (on average 2.112676056338028) internal successors, (450), 409 states have internal predecessors, (450), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:00:22,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 477 transitions. [2023-12-02 13:00:22,730 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 477 transitions. Word has length 2 [2023-12-02 13:00:22,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:22,730 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 477 transitions. [2023-12-02 13:00:22,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:22,730 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 477 transitions. [2023-12-02 13:00:22,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 13:00:22,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:22,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 13:00:22,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:22,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:22,931 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:00:22,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:22,932 INFO L85 PathProgramCache]: Analyzing trace with hash 27745564, now seen corresponding path program 1 times [2023-12-02 13:00:22,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:00:22,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293875807] [2023-12-02 13:00:22,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:22,933 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 13:00:22,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:00:22,934 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:22,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:23,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:00:23,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:23,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 13:00:23,201 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 13:00:23,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:00:23,202 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:00:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293875807] [2023-12-02 13:00:23,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293875807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:23,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:23,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:00:23,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937398401] [2023-12-02 13:00:23,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:23,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:00:23,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:00:23,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:00:23,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:00:23,204 INFO L87 Difference]: Start difference. First operand 426 states and 477 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) 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 13:00:25,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:25,683 INFO L93 Difference]: Finished difference Result 428 states and 479 transitions. [2023-12-02 13:00:25,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:00:25,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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 13:00:25,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:25,687 INFO L225 Difference]: With dead ends: 428 [2023-12-02 13:00:25,687 INFO L226 Difference]: Without dead ends: 428 [2023-12-02 13:00:25,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 13:00:25,689 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 9 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:25,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 680 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 13:00:25,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-12-02 13:00:25,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2023-12-02 13:00:25,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 215 states have (on average 2.1023255813953488) internal successors, (452), 411 states have internal predecessors, (452), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:00:25,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 479 transitions. [2023-12-02 13:00:25,704 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 479 transitions. Word has length 4 [2023-12-02 13:00:25,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:25,704 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 479 transitions. [2023-12-02 13:00:25,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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 13:00:25,705 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 479 transitions. [2023-12-02 13:00:25,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 13:00:25,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:25,705 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-12-02 13:00:25,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:25,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:25,906 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:00:25,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:25,906 INFO L85 PathProgramCache]: Analyzing trace with hash 894111406, now seen corresponding path program 1 times [2023-12-02 13:00:25,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:00:25,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478491890] [2023-12-02 13:00:25,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:25,908 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 13:00:25,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:00:25,909 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:25,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:26,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:00:26,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:26,106 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 13:00:26,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:26,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:00:26,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:26,808 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:00:26,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478491890] [2023-12-02 13:00:26,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478491890] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:00:26,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1677723544] [2023-12-02 13:00:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:26,809 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:00:26,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:00:26,810 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:00:26,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-02 13:00:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:27,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:00:27,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:27,360 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 13:00:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:27,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:00:27,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:27,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1677723544] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:00:27,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693246396] [2023-12-02 13:00:27,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:27,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:27,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:27,663 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:27,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 13:00:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:27,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:00:27,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:27,895 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 5 [2023-12-02 13:00:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:27,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:00:28,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:28,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693246396] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:00:28,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:00:28,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 6 [2023-12-02 13:00:28,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482384427] [2023-12-02 13:00:28,167 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:00:28,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:00:28,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:00:28,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:00:28,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:00:28,168 INFO L87 Difference]: Start difference. First operand 428 states and 479 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 13:00:39,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:39,942 INFO L93 Difference]: Finished difference Result 430 states and 481 transitions. [2023-12-02 13:00:39,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:00:39,944 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 13:00:39,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:39,947 INFO L225 Difference]: With dead ends: 430 [2023-12-02 13:00:39,947 INFO L226 Difference]: Without dead ends: 430 [2023-12-02 13:00:39,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:00:39,948 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 10 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:39,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1469 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2023-12-02 13:00:39,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-12-02 13:00:39,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2023-12-02 13:00:39,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 218 states have (on average 2.0825688073394497) internal successors, (454), 413 states have internal predecessors, (454), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:00:39,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 481 transitions. [2023-12-02 13:00:39,962 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 481 transitions. Word has length 6 [2023-12-02 13:00:39,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:39,962 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 481 transitions. [2023-12-02 13:00:39,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 13:00:39,963 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 481 transitions. [2023-12-02 13:00:39,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 13:00:39,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:39,963 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-12-02 13:00:39,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 13:00:40,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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)] Forceful destruction successful, exit code 0 [2023-12-02 13:00:40,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-02 13:00:40,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 13:00:40,564 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:00:40,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:40,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1735543046, now seen corresponding path program 1 times [2023-12-02 13:00:40,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:00:40,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620254607] [2023-12-02 13:00:40,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:40,565 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 13:00:40,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:00:40,566 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:40,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:40,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:00:40,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:40,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:00:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:40,888 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:00:40,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620254607] [2023-12-02 13:00:40,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620254607] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:00:40,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [623029034] [2023-12-02 13:00:40,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:40,889 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:00:40,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:00:40,889 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:00:40,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-02 13:00:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:41,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:00:41,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:41,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:00:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:41,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [623029034] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:00:41,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618043715] [2023-12-02 13:00:41,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:41,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:41,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:41,445 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:41,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 13:00:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:41,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 13:00:41,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:41,681 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 13:00:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:41,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:00:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:42,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618043715] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:00:42,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:00:42,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 7] total 18 [2023-12-02 13:00:42,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892667412] [2023-12-02 13:00:42,419 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:00:42,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 13:00:42,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:00:42,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 13:00:42,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-02 13:00:42,420 INFO L87 Difference]: Start difference. First operand 430 states and 481 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:53,065 INFO L93 Difference]: Finished difference Result 440 states and 491 transitions. [2023-12-02 13:00:53,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 13:00:53,068 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-02 13:00:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:53,071 INFO L225 Difference]: With dead ends: 440 [2023-12-02 13:00:53,071 INFO L226 Difference]: Without dead ends: 440 [2023-12-02 13:00:53,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2023-12-02 13:00:53,072 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 22 mSDsluCounter, 3809 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4225 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:53,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4225 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-12-02 13:00:53,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-12-02 13:00:53,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2023-12-02 13:00:53,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 228 states have (on average 2.0350877192982457) internal successors, (464), 423 states have internal predecessors, (464), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:00:53,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 491 transitions. [2023-12-02 13:00:53,088 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 491 transitions. Word has length 11 [2023-12-02 13:00:53,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:53,088 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 491 transitions. [2023-12-02 13:00:53,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:53,089 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 491 transitions. [2023-12-02 13:00:53,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 13:00:53,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:53,089 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1] [2023-12-02 13:00:53,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-02 13:00:53,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:53,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-12-02 13:00:53,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 13:00:53,690 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:00:53,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:53,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2022745324, now seen corresponding path program 2 times [2023-12-02 13:00:53,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:00:53,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892488816] [2023-12-02 13:00:53,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:00:53,692 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 13:00:53,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:00:53,693 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:53,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:53,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 13:00:53,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:00:53,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:00:53,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:53,987 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 13:00:53,988 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 13:00:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-02 13:00:54,341 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:00:54,341 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:00:54,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892488816] [2023-12-02 13:00:54,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892488816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:54,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:54,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 13:00:54,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117149415] [2023-12-02 13:00:54,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:54,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:00:54,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:00:54,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:00:54,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:54,344 INFO L87 Difference]: Start difference. First operand 440 states and 491 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:57,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:57,175 INFO L93 Difference]: Finished difference Result 577 states and 644 transitions. [2023-12-02 13:00:57,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:00:57,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-02 13:00:57,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:57,179 INFO L225 Difference]: With dead ends: 577 [2023-12-02 13:00:57,179 INFO L226 Difference]: Without dead ends: 577 [2023-12-02 13:00:57,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 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 13:00:57,180 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 435 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:57,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 416 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-02 13:00:57,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-12-02 13:00:57,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 496. [2023-12-02 13:00:57,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 279 states have (on average 2.053763440860215) internal successors, (573), 473 states have internal predecessors, (573), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 13:00:57,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 608 transitions. [2023-12-02 13:00:57,199 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 608 transitions. Word has length 21 [2023-12-02 13:00:57,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:57,199 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 608 transitions. [2023-12-02 13:00:57,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:57,200 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 608 transitions. [2023-12-02 13:00:57,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 13:00:57,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:57,200 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1] [2023-12-02 13:00:57,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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)] Forceful destruction successful, exit code 0 [2023-12-02 13:00:57,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:57,401 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:00:57,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:57,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2022745325, now seen corresponding path program 1 times [2023-12-02 13:00:57,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:00:57,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427448730] [2023-12-02 13:00:57,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:57,403 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:00:57,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:00:57,403 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:57,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:00:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:57,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 13:00:57,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:57,854 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:57,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:00:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:58,283 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:00:58,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427448730] [2023-12-02 13:00:58,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427448730] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:00:58,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [433506709] [2023-12-02 13:00:58,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:58,284 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:00:58,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:00:58,285 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:00:58,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-02 13:00:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:58,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 13:00:59,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:59,060 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:59,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:00:59,147 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:59,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [433506709] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:00:59,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352640368] [2023-12-02 13:00:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:59,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:59,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:59,149 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:59,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 13:00:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:59,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 13:00:59,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:59,444 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 13:01:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:01:00,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:01:06,248 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:01:06,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352640368] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:01:06,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:01:06,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11, 12] total 38 [2023-12-02 13:01:06,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838078271] [2023-12-02 13:01:06,248 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:01:06,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-02 13:01:06,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:01:06,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-02 13:01:06,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1035, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 13:01:06,250 INFO L87 Difference]: Start difference. First operand 496 states and 608 transitions. Second operand has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 0 states have call successors, (0), 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 13:01:35,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:35,862 INFO L93 Difference]: Finished difference Result 516 states and 629 transitions. [2023-12-02 13:01:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 13:01:35,865 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 0 states have call successors, (0), 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 21 [2023-12-02 13:01:35,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:35,868 INFO L225 Difference]: With dead ends: 516 [2023-12-02 13:01:35,868 INFO L226 Difference]: Without dead ends: 516 [2023-12-02 13:01:35,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=601, Invalid=1849, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 13:01:35,870 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 44 mSDsluCounter, 2781 mSDsCounter, 0 mSdLazyCounter, 2201 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3195 SdHoareTripleChecker+Invalid, 2220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:35,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3195 Invalid, 2220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2201 Invalid, 0 Unknown, 0 Unchecked, 26.4s Time] [2023-12-02 13:01:35,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-12-02 13:01:35,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2023-12-02 13:01:35,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 299 states have (on average 1.9866220735785953) internal successors, (594), 493 states have internal predecessors, (594), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 13:01:35,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 629 transitions. [2023-12-02 13:01:35,884 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 629 transitions. Word has length 21 [2023-12-02 13:01:35,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:35,884 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 629 transitions. [2023-12-02 13:01:35,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 0 states have call successors, (0), 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 13:01:35,884 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 629 transitions. [2023-12-02 13:01:35,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 13:01:35,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:35,885 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1] [2023-12-02 13:01:35,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 13:01:36,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:01:36,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2023-12-02 13:01:36,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 13:01:36,486 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:01:36,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:36,486 INFO L85 PathProgramCache]: Analyzing trace with hash 47774409, now seen corresponding path program 2 times [2023-12-02 13:01:36,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:01:36,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248961065] [2023-12-02 13:01:36,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:01:36,487 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 13:01:36,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:01:36,488 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:01:36,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:01:36,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 13:01:36,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:01:36,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:01:36,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:36,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:01:36,788 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 13:01:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:01:37,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:01:37,128 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:01:37,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248961065] [2023-12-02 13:01:37,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248961065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:37,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:37,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 13:01:37,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670210298] [2023-12-02 13:01:37,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:37,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:01:37,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:01:37,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:01:37,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:01:37,130 INFO L87 Difference]: Start difference. First operand 516 states and 629 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:01:40,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:40,024 INFO L93 Difference]: Finished difference Result 519 states and 631 transitions. [2023-12-02 13:01:40,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:01:40,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-02 13:01:40,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:40,028 INFO L225 Difference]: With dead ends: 519 [2023-12-02 13:01:40,029 INFO L226 Difference]: Without dead ends: 519 [2023-12-02 13:01:40,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 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 13:01:40,029 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 6 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:40,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 686 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-02 13:01:40,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-12-02 13:01:40,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 519. [2023-12-02 13:01:40,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 302 states have (on average 1.9735099337748345) internal successors, (596), 495 states have internal predecessors, (596), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 13:01:40,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 631 transitions. [2023-12-02 13:01:40,043 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 631 transitions. Word has length 25 [2023-12-02 13:01:40,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:40,044 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 631 transitions. [2023-12-02 13:01:40,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:01:40,044 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 631 transitions. [2023-12-02 13:01:40,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 13:01:40,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:40,045 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:01:40,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:01:40,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:01:40,246 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:01:40,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:40,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1339543568, now seen corresponding path program 1 times [2023-12-02 13:01:40,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:01:40,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262611933] [2023-12-02 13:01:40,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:40,247 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 13:01:40,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:01:40,248 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:01:40,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:01:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:40,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:01:40,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:40,918 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 13:01:40,918 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-12-02 13:01:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:01:40,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:01:40,963 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:01:40,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262611933] [2023-12-02 13:01:40,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262611933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:40,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:40,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:01:40,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708118597] [2023-12-02 13:01:40,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:40,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:01:40,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:01:40,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:01:40,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:01:40,965 INFO L87 Difference]: Start difference. First operand 519 states and 631 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 13:01:44,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:44,451 INFO L93 Difference]: Finished difference Result 531 states and 644 transitions. [2023-12-02 13:01:44,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:01:44,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 32 [2023-12-02 13:01:44,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:44,455 INFO L225 Difference]: With dead ends: 531 [2023-12-02 13:01:44,455 INFO L226 Difference]: Without dead ends: 531 [2023-12-02 13:01:44,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 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 13:01:44,456 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 173 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:44,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 512 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-02 13:01:44,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2023-12-02 13:01:44,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 514. [2023-12-02 13:01:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 302 states have (on average 1.9569536423841059) internal successors, (591), 490 states have internal predecessors, (591), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 13:01:44,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 626 transitions. [2023-12-02 13:01:44,475 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 626 transitions. Word has length 32 [2023-12-02 13:01:44,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:44,475 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 626 transitions. [2023-12-02 13:01:44,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 13:01:44,476 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 626 transitions. [2023-12-02 13:01:44,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 13:01:44,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:44,477 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:01:44,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:01:44,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:01:44,678 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:01:44,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:44,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1339543567, now seen corresponding path program 1 times [2023-12-02 13:01:44,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:01:44,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095470761] [2023-12-02 13:01:44,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:44,679 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 13:01:44,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:01:44,680 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:01:44,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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)] Waiting until timeout for monitored process [2023-12-02 13:01:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:45,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:01:45,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:45,551 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-02 13:01:45,552 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 1 case distinctions, treesize of input 19 treesize of output 21 [2023-12-02 13:01:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:01:45,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:01:45,707 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:01:45,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095470761] [2023-12-02 13:01:45,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095470761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:45,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:45,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:01:45,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685426173] [2023-12-02 13:01:45,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:45,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:01:45,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:01:45,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:01:45,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:01:45,709 INFO L87 Difference]: Start difference. First operand 514 states and 626 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 13:01:50,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:01:50,964 INFO L93 Difference]: Finished difference Result 660 states and 791 transitions. [2023-12-02 13:01:50,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:01:50,965 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 32 [2023-12-02 13:01:50,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:01:50,969 INFO L225 Difference]: With dead ends: 660 [2023-12-02 13:01:50,969 INFO L226 Difference]: Without dead ends: 660 [2023-12-02 13:01:50,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:01:50,970 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 498 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:01:50,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1382 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-02 13:01:50,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2023-12-02 13:01:50,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 528. [2023-12-02 13:01:50,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 317 states have (on average 1.9495268138801263) internal successors, (618), 504 states have internal predecessors, (618), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 13:01:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 653 transitions. [2023-12-02 13:01:50,987 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 653 transitions. Word has length 32 [2023-12-02 13:01:50,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:01:50,987 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 653 transitions. [2023-12-02 13:01:50,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 13:01:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 653 transitions. [2023-12-02 13:01:50,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 13:01:50,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:01:50,989 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:01:51,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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)] Forceful destruction successful, exit code 0 [2023-12-02 13:01:51,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:01:51,196 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:01:51,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:01:51,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1189212508, now seen corresponding path program 1 times [2023-12-02 13:01:51,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:01:51,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932962249] [2023-12-02 13:01:51,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:01:51,197 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 13:01:51,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:01:51,199 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:01:51,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 (18)] Waiting until timeout for monitored process [2023-12-02 13:01:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:01:51,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 13:01:51,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:01:52,031 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-02 13:01:52,031 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 1 case distinctions, treesize of input 19 treesize of output 21 [2023-12-02 13:01:52,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:01:52,433 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2023-12-02 13:01:52,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 31 [2023-12-02 13:01:52,471 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:01:52,471 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 13:01:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:01:52,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:01:52,656 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:01:52,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932962249] [2023-12-02 13:01:52,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932962249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:01:52,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:01:52,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 13:01:52,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494319747] [2023-12-02 13:01:52,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:01:52,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:01:52,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:01:52,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:01:52,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:01:52,658 INFO L87 Difference]: Start difference. First operand 528 states and 653 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 13:02:10,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:10,483 INFO L93 Difference]: Finished difference Result 676 states and 808 transitions. [2023-12-02 13:02:10,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:02:10,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 34 [2023-12-02 13:02:10,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:10,487 INFO L225 Difference]: With dead ends: 676 [2023-12-02 13:02:10,487 INFO L226 Difference]: Without dead ends: 676 [2023-12-02 13:02:10,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:02:10,488 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 538 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:10,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1889 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2023-12-02 13:02:10,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-12-02 13:02:10,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 538. [2023-12-02 13:02:10,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 327 states have (on average 1.9418960244648318) internal successors, (635), 514 states have internal predecessors, (635), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 13:02:10,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 670 transitions. [2023-12-02 13:02:10,500 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 670 transitions. Word has length 34 [2023-12-02 13:02:10,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:10,500 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 670 transitions. [2023-12-02 13:02:10,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 13:02:10,501 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 670 transitions. [2023-12-02 13:02:10,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 13:02:10,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:10,502 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:02:10,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 (18)] Ended with exit code 0 [2023-12-02 13:02:10,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:02:10,703 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:02:10,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:10,703 INFO L85 PathProgramCache]: Analyzing trace with hash 372308325, now seen corresponding path program 1 times [2023-12-02 13:02:10,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:02:10,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293965891] [2023-12-02 13:02:10,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:10,704 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 13:02:10,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:02:10,705 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:02:10,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:02:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:11,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:02:11,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:02:11,450 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 13:02:11,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:02:11,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 13:02:11,500 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 13:02:11,500 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 13:02:11,536 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:02:11,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:02:11,536 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:02:11,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293965891] [2023-12-02 13:02:11,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293965891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:02:11,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:02:11,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:02:11,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171930926] [2023-12-02 13:02:11,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:02:11,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:02:11,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:02:11,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:02:11,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:02:11,538 INFO L87 Difference]: Start difference. First operand 538 states and 670 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 13:02:13,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:13,180 INFO L93 Difference]: Finished difference Result 552 states and 688 transitions. [2023-12-02 13:02:13,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:02:13,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 36 [2023-12-02 13:02:13,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:13,183 INFO L225 Difference]: With dead ends: 552 [2023-12-02 13:02:13,183 INFO L226 Difference]: Without dead ends: 552 [2023-12-02 13:02:13,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 1 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 13:02:13,184 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 166 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:13,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 510 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 13:02:13,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-12-02 13:02:13,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 549. [2023-12-02 13:02:13,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 339 states have (on average 1.9262536873156342) internal successors, (653), 525 states have internal predecessors, (653), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 13:02:13,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 688 transitions. [2023-12-02 13:02:13,196 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 688 transitions. Word has length 36 [2023-12-02 13:02:13,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:13,196 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 688 transitions. [2023-12-02 13:02:13,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 13:02:13,197 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 688 transitions. [2023-12-02 13:02:13,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 13:02:13,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:13,198 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:02:13,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:02:13,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:02:13,398 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:02:13,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:13,399 INFO L85 PathProgramCache]: Analyzing trace with hash 372308326, now seen corresponding path program 1 times [2023-12-02 13:02:13,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:02:13,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689317447] [2023-12-02 13:02:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:13,400 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 13:02:13,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:02:13,401 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:02:13,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 (20)] Waiting until timeout for monitored process [2023-12-02 13:02:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:14,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 13:02:14,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:02:14,282 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 16 treesize of output 10 [2023-12-02 13:02:14,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 13:02:14,322 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 13:02:14,333 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 11 treesize of output 10 [2023-12-02 13:02:14,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:02:14,642 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 19 treesize of output 14 [2023-12-02 13:02:14,661 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:02:14,662 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 13:02:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:02:14,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:02:14,875 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:02:14,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689317447] [2023-12-02 13:02:14,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689317447] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:02:14,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:02:14,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 13:02:14,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624553830] [2023-12-02 13:02:14,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:02:14,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:02:14,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:02:14,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:02:14,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:02:14,877 INFO L87 Difference]: Start difference. First operand 549 states and 688 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 13:02:26,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:26,664 INFO L93 Difference]: Finished difference Result 564 states and 697 transitions. [2023-12-02 13:02:26,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:02:26,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 36 [2023-12-02 13:02:26,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:26,668 INFO L225 Difference]: With dead ends: 564 [2023-12-02 13:02:26,668 INFO L226 Difference]: Without dead ends: 564 [2023-12-02 13:02:26,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:02:26,669 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 429 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:26,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1426 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2023-12-02 13:02:26,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-12-02 13:02:26,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 549. [2023-12-02 13:02:26,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 339 states have (on average 1.9174041297935103) internal successors, (650), 525 states have internal predecessors, (650), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 13:02:26,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 685 transitions. [2023-12-02 13:02:26,685 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 685 transitions. Word has length 36 [2023-12-02 13:02:26,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:26,686 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 685 transitions. [2023-12-02 13:02:26,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 13:02:26,686 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 685 transitions. [2023-12-02 13:02:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 13:02:26,687 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:26,687 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:02:26,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 (20)] Ended with exit code 0 [2023-12-02 13:02:26,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:02:26,887 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:02:26,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:26,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1306400010, now seen corresponding path program 1 times [2023-12-02 13:02:26,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:02:26,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755409516] [2023-12-02 13:02:26,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:26,889 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 13:02:26,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:02:26,890 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:02:26,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 (21)] Waiting until timeout for monitored process [2023-12-02 13:02:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:27,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 13:02:27,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:02:27,738 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 13:02:27,801 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 21 treesize of output 1 [2023-12-02 13:02:27,944 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-02 13:02:27,944 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2023-12-02 13:02:28,040 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 13:02:28,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 42 treesize of output 14 [2023-12-02 13:02:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:02:28,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:02:28,076 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:02:28,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755409516] [2023-12-02 13:02:28,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755409516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:02:28,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:02:28,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 13:02:28,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027956737] [2023-12-02 13:02:28,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:02:28,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:02:28,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:02:28,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:02:28,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:02:28,078 INFO L87 Difference]: Start difference. First operand 549 states and 685 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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 13:02:35,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:02:37,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:02:39,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:02:40,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:40,610 INFO L93 Difference]: Finished difference Result 546 states and 680 transitions. [2023-12-02 13:02:40,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:02:40,611 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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 38 [2023-12-02 13:02:40,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:40,615 INFO L225 Difference]: With dead ends: 546 [2023-12-02 13:02:40,615 INFO L226 Difference]: Without dead ends: 546 [2023-12-02 13:02:40,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 13:02:40,616 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 190 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:40,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1362 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 758 Invalid, 3 Unknown, 0 Unchecked, 12.5s Time] [2023-12-02 13:02:40,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2023-12-02 13:02:40,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 524. [2023-12-02 13:02:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 317 states have (on average 1.9179810725552051) internal successors, (608), 500 states have internal predecessors, (608), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 13:02:40,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 643 transitions. [2023-12-02 13:02:40,629 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 643 transitions. Word has length 38 [2023-12-02 13:02:40,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:40,629 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 643 transitions. [2023-12-02 13:02:40,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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 13:02:40,630 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 643 transitions. [2023-12-02 13:02:40,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 13:02:40,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:40,631 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:02:40,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 (21)] Ended with exit code 0 [2023-12-02 13:02:40,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:02:40,840 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:02:40,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:40,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1306400011, now seen corresponding path program 1 times [2023-12-02 13:02:40,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:02:40,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191297924] [2023-12-02 13:02:40,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:40,841 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 13:02:40,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:02:40,842 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:02:40,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:02:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:41,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 13:02:41,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:02:41,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-12-02 13:02:41,692 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 13:02:41,755 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 25 treesize of output 1 [2023-12-02 13:02:41,769 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 16 treesize of output 12 [2023-12-02 13:02:41,886 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 23 treesize of output 18 [2023-12-02 13:02:41,893 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 21 treesize of output 16 [2023-12-02 13:02:41,967 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 27 treesize of output 9 [2023-12-02 13:02:42,011 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:02:42,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:02:42,012 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:02:42,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191297924] [2023-12-02 13:02:42,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191297924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:02:42,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:02:42,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 13:02:42,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722900933] [2023-12-02 13:02:42,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:02:42,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:02:42,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:02:42,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:02:42,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:02:42,013 INFO L87 Difference]: Start difference. First operand 524 states and 643 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 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 13:02:49,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:02:50,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:50,343 INFO L93 Difference]: Finished difference Result 523 states and 641 transitions. [2023-12-02 13:02:50,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:02:50,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 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 38 [2023-12-02 13:02:50,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:50,347 INFO L225 Difference]: With dead ends: 523 [2023-12-02 13:02:50,347 INFO L226 Difference]: Without dead ends: 523 [2023-12-02 13:02:50,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:02:50,348 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 188 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:50,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1308 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 718 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2023-12-02 13:02:50,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-12-02 13:02:50,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2023-12-02 13:02:50,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 317 states have (on average 1.911671924290221) internal successors, (606), 499 states have internal predecessors, (606), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 13:02:50,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 641 transitions. [2023-12-02 13:02:50,361 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 641 transitions. Word has length 38 [2023-12-02 13:02:50,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:50,361 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 641 transitions. [2023-12-02 13:02:50,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 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 13:02:50,361 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 641 transitions. [2023-12-02 13:02:50,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 13:02:50,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:50,362 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:02:50,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:02:50,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:02:50,563 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:02:50,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:50,563 INFO L85 PathProgramCache]: Analyzing trace with hash -2019088877, now seen corresponding path program 1 times [2023-12-02 13:02:50,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:02:50,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981627080] [2023-12-02 13:02:50,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:50,564 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 13:02:50,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:02:50,565 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:02:50,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 (23)] Waiting until timeout for monitored process [2023-12-02 13:02:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:51,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 13:02:51,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:02:51,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-12-02 13:02:51,653 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 13:02:51,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 13:02:51,739 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 25 treesize of output 1 [2023-12-02 13:02:51,875 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 38 treesize of output 31 [2023-12-02 13:02:52,093 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-12-02 13:02:52,093 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 56 treesize of output 55 [2023-12-02 13:02:52,158 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 42 treesize of output 15 [2023-12-02 13:02:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:02:52,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:02:52,290 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:02:52,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981627080] [2023-12-02 13:02:52,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981627080] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:02:52,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:02:52,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 13:02:52,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136546547] [2023-12-02 13:02:52,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:02:52,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 13:02:52,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:02:52,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 13:02:52,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-02 13:02:52,292 INFO L87 Difference]: Start difference. First operand 523 states and 641 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 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 13:03:02,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:04,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:05,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:03:05,923 INFO L93 Difference]: Finished difference Result 544 states and 663 transitions. [2023-12-02 13:03:05,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:03:05,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 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 41 [2023-12-02 13:03:05,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:03:05,928 INFO L225 Difference]: With dead ends: 544 [2023-12-02 13:03:05,928 INFO L226 Difference]: Without dead ends: 544 [2023-12-02 13:03:05,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:03:05,929 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 222 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:03:05,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 1506 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1084 Invalid, 2 Unknown, 0 Unchecked, 13.4s Time] [2023-12-02 13:03:05,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2023-12-02 13:03:05,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 532. [2023-12-02 13:03:05,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 326 states have (on average 1.9049079754601228) internal successors, (621), 508 states have internal predecessors, (621), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 13:03:05,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 656 transitions. [2023-12-02 13:03:05,945 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 656 transitions. Word has length 41 [2023-12-02 13:03:05,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:03:05,945 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 656 transitions. [2023-12-02 13:03:05,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 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 13:03:05,945 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 656 transitions. [2023-12-02 13:03:05,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 13:03:05,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:03:05,946 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:03:05,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 (23)] Ended with exit code 0 [2023-12-02 13:03:06,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:03:06,147 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:03:06,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:03:06,147 INFO L85 PathProgramCache]: Analyzing trace with hash -2019088876, now seen corresponding path program 1 times [2023-12-02 13:03:06,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:03:06,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343455158] [2023-12-02 13:03:06,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:03:06,148 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 13:03:06,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:03:06,149 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:03:06,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 (24)] Waiting until timeout for monitored process [2023-12-02 13:03:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:03:07,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 13:03:07,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:03:07,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-12-02 13:03:07,576 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:03:07,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 13:03:07,589 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 13:03:07,670 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 16 treesize of output 12 [2023-12-02 13:03:07,702 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 25 treesize of output 1 [2023-12-02 13:03:07,832 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 36 treesize of output 29 [2023-12-02 13:03:07,839 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 21 treesize of output 16 [2023-12-02 13:03:08,085 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-12-02 13:03:08,085 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 80 treesize of output 75 [2023-12-02 13:03:08,112 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 39 treesize of output 16 [2023-12-02 13:03:08,263 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 40 treesize of output 13 [2023-12-02 13:03:08,277 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 12 treesize of output 3 [2023-12-02 13:03:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:03:08,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:03:08,335 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:03:08,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343455158] [2023-12-02 13:03:08,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343455158] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:03:08,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:03:08,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 13:03:08,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548532166] [2023-12-02 13:03:08,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:03:08,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 13:03:08,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:03:08,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 13:03:08,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:03:08,337 INFO L87 Difference]: Start difference. First operand 532 states and 656 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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 13:03:17,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:19,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:21,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:03:22,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:03:22,909 INFO L93 Difference]: Finished difference Result 542 states and 658 transitions. [2023-12-02 13:03:22,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 13:03:22,911 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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 41 [2023-12-02 13:03:22,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:03:22,914 INFO L225 Difference]: With dead ends: 542 [2023-12-02 13:03:22,914 INFO L226 Difference]: Without dead ends: 542 [2023-12-02 13:03:22,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-02 13:03:22,915 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 391 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:03:22,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 1290 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1051 Invalid, 3 Unknown, 0 Unchecked, 14.1s Time] [2023-12-02 13:03:22,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2023-12-02 13:03:22,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 532. [2023-12-02 13:03:22,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 326 states have (on average 1.892638036809816) internal successors, (617), 508 states have internal predecessors, (617), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 13:03:22,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 652 transitions. [2023-12-02 13:03:22,926 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 652 transitions. Word has length 41 [2023-12-02 13:03:22,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:03:22,926 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 652 transitions. [2023-12-02 13:03:22,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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 13:03:22,927 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 652 transitions. [2023-12-02 13:03:22,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 13:03:22,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:03:22,927 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:03:22,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 (24)] Ended with exit code 0 [2023-12-02 13:03:23,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:03:23,128 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [#Ultimate.C_strcpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, #Ultimate.C_strcpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 196 more)] === [2023-12-02 13:03:23,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:03:23,129 INFO L85 PathProgramCache]: Analyzing trace with hash 351767637, now seen corresponding path program 1 times [2023-12-02 13:03:23,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:03:23,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789227183] [2023-12-02 13:03:23,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:03:23,130 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 13:03:23,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:03:23,131 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:03:23,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d9a63cf8-da7b-40e3-9a8c-361296c05a2a/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 13:03:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:03:24,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 13:03:24,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:03:24,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-12-02 13:03:24,555 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 13:03:24,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 13:03:24,626 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 25 treesize of output 1 [2023-12-02 13:03:24,761 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 38 treesize of output 31 [2023-12-02 13:03:24,974 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-12-02 13:03:24,974 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 56 treesize of output 55 [2023-12-02 13:03:25,180 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-12-02 13:03:25,180 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 56 treesize of output 55 [2023-12-02 13:03:25,238 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 42 treesize of output 15 [2023-12-02 13:03:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-02 13:03:25,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:03:27,852 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1560 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) v_ArrVal_1560) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0)))))) is different from false [2023-12-02 13:03:27,896 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1559 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1560 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem223#1.base| v_ArrVal_1559))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1560)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 13:03:27,931 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1559 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1560 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1559))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1560)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 13:03:27,991 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1558 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1559 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1560 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1558))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1559)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1560)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))) is different from false [2023-12-02 13:03:28,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:03:28,034 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 78 [2023-12-02 13:03:28,049 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 9183 treesize of output 7356 [2023-12-02 13:03:28,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3462 treesize of output 3238 [2023-12-02 13:03:28,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3238 treesize of output 2713 [2023-12-02 13:03:28,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2713 treesize of output 2286 [2023-12-02 13:07:42,022 WARN L293 SmtUtils]: Spent 27.94s on a formula simplification that was a NOOP. DAG size: 895 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-02 13:07:42,023 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:07:42,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 259 treesize of output 1931