./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:42:08,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:42:08,248 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 08:42:08,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:42:08,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:42:08,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:42:08,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:42:08,275 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:42:08,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:42:08,275 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:42:08,275 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:42:08,276 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:42:08,276 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:42:08,276 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:42:08,276 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:42:08,276 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:42:08,276 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:42:08,276 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:42:08,276 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:42:08,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:42:08,277 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 08:42:08,277 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 08:42:08,277 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 08:42:08,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:42:08,277 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 08:42:08,277 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 08:42:08,277 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:42:08,277 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:42:08,277 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:42:08,277 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:42:08,277 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:42:08,277 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:42:08,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:42:08,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:42:08,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:42:08,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:42:08,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:42:08,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:42:08,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:42:08,278 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:42:08,278 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:42:08,278 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:42:08,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:42:08,278 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:42:08,279 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:42:08,279 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:42:08,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:42:08,279 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1 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 -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2024-12-02 08:42:08,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:42:08,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:42:08,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:42:08,516 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:42:08,516 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:42:08,517 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i [2024-12-02 08:42:11,113 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/data/10bc3aa1f/9051775ec4b54c038116e745210363a9/FLAG343ca2ce1 [2024-12-02 08:42:11,380 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:42:11,380 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i [2024-12-02 08:42:11,395 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/data/10bc3aa1f/9051775ec4b54c038116e745210363a9/FLAG343ca2ce1 [2024-12-02 08:42:11,689 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/data/10bc3aa1f/9051775ec4b54c038116e745210363a9 [2024-12-02 08:42:11,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:42:11,691 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:42:11,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:42:11,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:42:11,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:42:11,696 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:42:11" (1/1) ... [2024-12-02 08:42:11,697 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c73139d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:11, skipping insertion in model container [2024-12-02 08:42:11,697 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:42:11" (1/1) ... [2024-12-02 08:42:11,728 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:42:12,051 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:12,081 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:12,085 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:12,089 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:12,095 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:12,124 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:12,125 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:12,127 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:12,128 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:12,129 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:12,131 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:12,132 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:12,133 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:12,133 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:12,136 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:12,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:42:12,154 ERROR L321 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) [2024-12-02 08:42:12,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5632b0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:12, skipping insertion in model container [2024-12-02 08:42:12,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:42:12,155 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-12-02 08:42:12,157 INFO L158 Benchmark]: Toolchain (without parser) took 464.55ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 71.4MB in the end (delta: 19.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-02 08:42:12,157 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory was 72.7MB in the beginning and 72.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:42:12,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 462.91ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 71.4MB in the end (delta: 19.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-02 08:42:12,159 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory was 72.7MB in the beginning and 72.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 462.91ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 71.4MB in the end (delta: 19.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 831]: 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:42:13,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:42:13,919 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-12-02 08:42:13,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:42:13,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:42:13,946 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:42:13,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:42:13,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:42:13,947 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:42:13,947 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:42:13,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:42:13,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:42:13,947 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:42:13,947 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:42:13,948 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:42:13,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:42:13,948 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:42:13,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:42:13,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:42:13,948 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:42:13,948 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 08:42:13,948 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 08:42:13,948 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 08:42:13,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:42:13,948 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 08:42:13,948 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 08:42:13,948 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 08:42:13,949 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 08:42:13,949 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:42:13,949 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:42:13,949 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:42:13,949 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:42:13,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:42:13,949 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:42:13,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:42:13,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:42:13,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:42:13,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:42:13,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:42:13,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:42:13,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:42:13,950 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:42:13,950 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:42:13,950 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 08:42:13,950 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 08:42:13,950 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:42:13,950 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:42:13,950 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:42:13,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:42:13,951 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1 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 -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2024-12-02 08:42:14,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:42:14,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:42:14,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:42:14,187 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:42:14,187 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:42:14,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i [2024-12-02 08:42:16,791 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/data/7f4058f41/21a6f55890a545b9b4fa374a60c012c4/FLAG9cb464206 [2024-12-02 08:42:17,083 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:42:17,083 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i [2024-12-02 08:42:17,098 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/data/7f4058f41/21a6f55890a545b9b4fa374a60c012c4/FLAG9cb464206 [2024-12-02 08:42:17,370 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/data/7f4058f41/21a6f55890a545b9b4fa374a60c012c4 [2024-12-02 08:42:17,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:42:17,373 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:42:17,374 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:42:17,374 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:42:17,377 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:42:17,377 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:42:17" (1/1) ... [2024-12-02 08:42:17,378 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a0c7d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:17, skipping insertion in model container [2024-12-02 08:42:17,378 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:42:17" (1/1) ... [2024-12-02 08:42:17,410 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:42:17,701 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,733 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,736 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,740 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,748 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,777 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,777 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,781 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,781 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,783 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,785 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,787 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,788 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,789 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,793 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:42:17,812 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-12-02 08:42:17,822 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:42:17,854 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,870 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,873 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,875 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,880 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,904 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,904 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,906 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,906 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,907 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,909 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,909 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,910 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,911 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,913 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 08:42:17,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:42:17,921 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:42:17,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:42:18,031 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:42:18,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:18 WrapperNode [2024-12-02 08:42:18,031 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:42:18,032 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:42:18,032 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:42:18,032 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:42:18,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:18" (1/1) ... [2024-12-02 08:42:18,061 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:18" (1/1) ... [2024-12-02 08:42:18,101 INFO L138 Inliner]: procedures = 210, calls = 273, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1024 [2024-12-02 08:42:18,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:42:18,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:42:18,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:42:18,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:42:18,110 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:18" (1/1) ... [2024-12-02 08:42:18,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:18" (1/1) ... [2024-12-02 08:42:18,118 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:18" (1/1) ... [2024-12-02 08:42:18,187 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [218, 2, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 54 writes are split as follows [50, 0, 4]. [2024-12-02 08:42:18,187 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:18" (1/1) ... [2024-12-02 08:42:18,187 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:18" (1/1) ... [2024-12-02 08:42:18,221 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:18" (1/1) ... [2024-12-02 08:42:18,223 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:18" (1/1) ... [2024-12-02 08:42:18,232 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:18" (1/1) ... [2024-12-02 08:42:18,235 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:18" (1/1) ... [2024-12-02 08:42:18,239 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:18" (1/1) ... [2024-12-02 08:42:18,246 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:42:18,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:42:18,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:42:18,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:42:18,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:18" (1/1) ... [2024-12-02 08:42:18,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:42:18,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:18,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:42:18,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:42:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-12-02 08:42:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-12-02 08:42:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-12-02 08:42:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-12-02 08:42:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-12-02 08:42:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-12-02 08:42:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-12-02 08:42:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-12-02 08:42:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-12-02 08:42:18,294 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-12-02 08:42:18,294 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-12-02 08:42:18,294 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-12-02 08:42:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 08:42:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 08:42:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 08:42:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 08:42:18,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-12-02 08:42:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-12-02 08:42:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-12-02 08:42:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 08:42:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 08:42:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-12-02 08:42:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-12-02 08:42:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 08:42:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:42:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 08:42:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 08:42:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 08:42:18,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:42:18,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:42:18,470 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:42:18,471 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:42:18,474 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 08:42:18,517 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 08:42:18,539 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 08:42:22,170 INFO L? ?]: Removed 1086 outVars from TransFormulas that were not future-live. [2024-12-02 08:42:22,171 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:42:22,197 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:42:22,198 INFO L312 CfgBuilder]: Removed 36 assume(true) statements. [2024-12-02 08:42:22,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:42:22 BoogieIcfgContainer [2024-12-02 08:42:22,198 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:42:22,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:42:22,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:42:22,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:42:22,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:42:17" (1/3) ... [2024-12-02 08:42:22,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20de4156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:42:22, skipping insertion in model container [2024-12-02 08:42:22,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:42:18" (2/3) ... [2024-12-02 08:42:22,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20de4156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:42:22, skipping insertion in model container [2024-12-02 08:42:22,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:42:22" (3/3) ... [2024-12-02 08:42:22,207 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test2-2.i [2024-12-02 08:42:22,216 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:42:22,217 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_nondet_test2-2.i that has 4 procedures, 1070 locations, 1 initial locations, 38 loop locations, and 525 error locations. [2024-12-02 08:42:22,262 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:42:22,274 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@1ccc72e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:42:22,274 INFO L334 AbstractCegarLoop]: Starting to check reachability of 525 error locations. [2024-12-02 08:42:22,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 1060 states, 533 states have (on average 2.2157598499061915) internal successors, (1181), 1055 states have internal predecessors, (1181), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:22,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-12-02 08:42:22,284 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:22,285 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-12-02 08:42:22,285 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr524ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:22,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:22,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1758461, now seen corresponding path program 1 times [2024-12-02 08:42:22,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:22,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863083071] [2024-12-02 08:42:22,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:22,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:22,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:22,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:22,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:42:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:22,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 08:42:22,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:22,518 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_46| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46| (_ bv0 1)) |c_#valid|))) is different from true [2024-12-02 08:42:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:22,522 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:42:22,523 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:22,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863083071] [2024-12-02 08:42:22,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863083071] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:22,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:22,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:42:22,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330837435] [2024-12-02 08:42:22,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:22,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:42:22,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:22,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:42:22,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-12-02 08:42:22,553 INFO L87 Difference]: Start difference. First operand has 1060 states, 533 states have (on average 2.2157598499061915) internal successors, (1181), 1055 states have internal predecessors, (1181), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2024-12-02 08:42:24,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:24,442 INFO L93 Difference]: Finished difference Result 1449 states and 1550 transitions. [2024-12-02 08:42:24,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:42:24,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 [2024-12-02 08:42:24,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:24,458 INFO L225 Difference]: With dead ends: 1449 [2024-12-02 08:42:24,458 INFO L226 Difference]: Without dead ends: 1446 [2024-12-02 08:42:24,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-12-02 08:42:24,462 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 427 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 2290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1551 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:24,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 1483 Invalid, 2290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 739 Invalid, 0 Unknown, 1551 Unchecked, 1.8s Time] [2024-12-02 08:42:24,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2024-12-02 08:42:24,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1048. [2024-12-02 08:42:24,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 527 states have (on average 2.0853889943074004) internal successors, (1099), 1043 states have internal predecessors, (1099), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:24,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1105 transitions. [2024-12-02 08:42:24,528 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1105 transitions. Word has length 4 [2024-12-02 08:42:24,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:24,528 INFO L471 AbstractCegarLoop]: Abstraction has 1048 states and 1105 transitions. [2024-12-02 08:42:24,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2024-12-02 08:42:24,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1105 transitions. [2024-12-02 08:42:24,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-12-02 08:42:24,528 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:24,529 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-12-02 08:42:24,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:42:24,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:24,729 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:24,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:24,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1756837, now seen corresponding path program 1 times [2024-12-02 08:42:24,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:24,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845584037] [2024-12-02 08:42:24,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:24,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:24,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:24,732 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:24,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:42:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:24,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:42:24,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:24,861 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 [2024-12-02 08:42:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:24,870 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:42:24,870 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:24,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845584037] [2024-12-02 08:42:24,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845584037] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:24,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:24,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:42:24,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124324931] [2024-12-02 08:42:24,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:24,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:42:24,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:24,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:42:24,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:42:24,872 INFO L87 Difference]: Start difference. First operand 1048 states and 1105 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:26,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:26,309 INFO L93 Difference]: Finished difference Result 1224 states and 1291 transitions. [2024-12-02 08:42:26,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:42:26,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-12-02 08:42:26,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:26,313 INFO L225 Difference]: With dead ends: 1224 [2024-12-02 08:42:26,313 INFO L226 Difference]: Without dead ends: 1224 [2024-12-02 08:42:26,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:42:26,314 INFO L435 NwaCegarLoop]: 630 mSDtfsCounter, 969 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:26,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 777 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 08:42:26,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2024-12-02 08:42:26,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1045. [2024-12-02 08:42:26,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 535 states have (on average 2.0504672897196263) internal successors, (1097), 1040 states have internal predecessors, (1097), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:26,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1103 transitions. [2024-12-02 08:42:26,329 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1103 transitions. Word has length 4 [2024-12-02 08:42:26,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:26,329 INFO L471 AbstractCegarLoop]: Abstraction has 1045 states and 1103 transitions. [2024-12-02 08:42:26,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:26,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1103 transitions. [2024-12-02 08:42:26,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-12-02 08:42:26,329 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:26,330 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-12-02 08:42:26,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:42:26,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:26,530 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:26,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:26,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1756838, now seen corresponding path program 1 times [2024-12-02 08:42:26,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:26,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53898195] [2024-12-02 08:42:26,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:26,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:26,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:26,533 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:26,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:42:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:26,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 08:42:26,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:26,633 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 [2024-12-02 08:42:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:26,650 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:42:26,650 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:26,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53898195] [2024-12-02 08:42:26,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53898195] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:26,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:26,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:42:26,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314356760] [2024-12-02 08:42:26,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:26,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:42:26,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:26,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:42:26,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:42:26,651 INFO L87 Difference]: Start difference. First operand 1045 states and 1103 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:28,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:28,600 INFO L93 Difference]: Finished difference Result 1457 states and 1547 transitions. [2024-12-02 08:42:28,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:42:28,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-12-02 08:42:28,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:28,603 INFO L225 Difference]: With dead ends: 1457 [2024-12-02 08:42:28,603 INFO L226 Difference]: Without dead ends: 1457 [2024-12-02 08:42:28,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:42:28,604 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 444 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:28,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 1483 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 08:42:28,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2024-12-02 08:42:28,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1170. [2024-12-02 08:42:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 661 states have (on average 2.006051437216339) internal successors, (1326), 1165 states have internal predecessors, (1326), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:28,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1332 transitions. [2024-12-02 08:42:28,619 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1332 transitions. Word has length 4 [2024-12-02 08:42:28,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:28,619 INFO L471 AbstractCegarLoop]: Abstraction has 1170 states and 1332 transitions. [2024-12-02 08:42:28,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:28,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1332 transitions. [2024-12-02 08:42:28,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-02 08:42:28,620 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:28,620 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:28,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 08:42:28,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:28,821 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:28,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:28,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1599592659, now seen corresponding path program 1 times [2024-12-02 08:42:28,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:28,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016057129] [2024-12-02 08:42:28,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:28,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:28,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:28,823 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:28,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 08:42:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:28,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 08:42:28,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:28,937 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 [2024-12-02 08:42:29,002 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-12-02 08:42:29,002 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 12 treesize of output 18 [2024-12-02 08:42:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:29,067 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:42:29,067 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:29,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016057129] [2024-12-02 08:42:29,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016057129] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:29,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:29,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:42:29,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971439729] [2024-12-02 08:42:29,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:29,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:42:29,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:29,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:42:29,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:42:29,068 INFO L87 Difference]: Start difference. First operand 1170 states and 1332 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:33,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:33,011 INFO L93 Difference]: Finished difference Result 2155 states and 2293 transitions. [2024-12-02 08:42:33,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:42:33,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-12-02 08:42:33,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:33,017 INFO L225 Difference]: With dead ends: 2155 [2024-12-02 08:42:33,017 INFO L226 Difference]: Without dead ends: 2155 [2024-12-02 08:42:33,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:42:33,017 INFO L435 NwaCegarLoop]: 1024 mSDtfsCounter, 1182 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:33,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 2183 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-12-02 08:42:33,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2024-12-02 08:42:33,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 1319. [2024-12-02 08:42:33,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 810 states have (on average 1.991358024691358) internal successors, (1613), 1314 states have internal predecessors, (1613), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:33,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1619 transitions. [2024-12-02 08:42:33,038 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1619 transitions. Word has length 9 [2024-12-02 08:42:33,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:33,039 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1619 transitions. [2024-12-02 08:42:33,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:33,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1619 transitions. [2024-12-02 08:42:33,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-02 08:42:33,039 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:33,039 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:33,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 08:42:33,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:33,240 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:33,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:33,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1952235122, now seen corresponding path program 1 times [2024-12-02 08:42:33,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:33,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62546199] [2024-12-02 08:42:33,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:33,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:33,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:33,242 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:33,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 08:42:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:33,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:42:33,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:33,371 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 [2024-12-02 08:42:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:33,379 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:42:33,379 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:33,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62546199] [2024-12-02 08:42:33,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62546199] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:33,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:33,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:42:33,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192815922] [2024-12-02 08:42:33,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:33,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:42:33,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:33,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:42:33,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:42:33,380 INFO L87 Difference]: Start difference. First operand 1319 states and 1619 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:34,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:34,673 INFO L93 Difference]: Finished difference Result 1485 states and 1795 transitions. [2024-12-02 08:42:34,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:42:34,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-12-02 08:42:34,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:34,677 INFO L225 Difference]: With dead ends: 1485 [2024-12-02 08:42:34,677 INFO L226 Difference]: Without dead ends: 1485 [2024-12-02 08:42:34,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:42:34,678 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 761 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:34,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 1130 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 08:42:34,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2024-12-02 08:42:34,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1272. [2024-12-02 08:42:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 810 states have (on average 1.9197530864197532) internal successors, (1555), 1267 states have internal predecessors, (1555), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:34,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1561 transitions. [2024-12-02 08:42:34,691 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1561 transitions. Word has length 10 [2024-12-02 08:42:34,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:34,691 INFO L471 AbstractCegarLoop]: Abstraction has 1272 states and 1561 transitions. [2024-12-02 08:42:34,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:34,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1561 transitions. [2024-12-02 08:42:34,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-02 08:42:34,691 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:34,691 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:34,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 08:42:34,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:34,892 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:34,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:34,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1952235123, now seen corresponding path program 1 times [2024-12-02 08:42:34,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:34,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1641803093] [2024-12-02 08:42:34,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:34,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:34,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:34,894 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:34,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 08:42:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:35,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 08:42:35,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:35,008 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 [2024-12-02 08:42:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:35,026 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:42:35,026 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:35,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641803093] [2024-12-02 08:42:35,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641803093] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:35,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:35,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:42:35,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125187843] [2024-12-02 08:42:35,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:35,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:42:35,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:35,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:42:35,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:42:35,027 INFO L87 Difference]: Start difference. First operand 1272 states and 1561 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:36,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:36,834 INFO L93 Difference]: Finished difference Result 1696 states and 2102 transitions. [2024-12-02 08:42:36,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:42:36,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-12-02 08:42:36,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:36,837 INFO L225 Difference]: With dead ends: 1696 [2024-12-02 08:42:36,837 INFO L226 Difference]: Without dead ends: 1696 [2024-12-02 08:42:36,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:42:36,838 INFO L435 NwaCegarLoop]: 1053 mSDtfsCounter, 512 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:36,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1474 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 08:42:36,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2024-12-02 08:42:36,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1299. [2024-12-02 08:42:36,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 847 states have (on average 1.8984651711924438) internal successors, (1608), 1294 states have internal predecessors, (1608), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1614 transitions. [2024-12-02 08:42:36,860 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1614 transitions. Word has length 10 [2024-12-02 08:42:36,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:36,860 INFO L471 AbstractCegarLoop]: Abstraction has 1299 states and 1614 transitions. [2024-12-02 08:42:36,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:36,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1614 transitions. [2024-12-02 08:42:36,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-02 08:42:36,861 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:36,861 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:36,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 08:42:37,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:37,061 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr419REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:37,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:37,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2110860753, now seen corresponding path program 1 times [2024-12-02 08:42:37,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:37,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754466903] [2024-12-02 08:42:37,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:37,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:37,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:37,064 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:37,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 08:42:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:37,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:42:37,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:37,235 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:42:37,235 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:37,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754466903] [2024-12-02 08:42:37,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754466903] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:37,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:37,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:42:37,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560438803] [2024-12-02 08:42:37,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:37,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:42:37,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:37,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:42:37,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:42:37,236 INFO L87 Difference]: Start difference. First operand 1299 states and 1614 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2024-12-02 08:42:37,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:37,446 INFO L93 Difference]: Finished difference Result 1552 states and 1762 transitions. [2024-12-02 08:42:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:42:37,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-12-02 08:42:37,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:37,450 INFO L225 Difference]: With dead ends: 1552 [2024-12-02 08:42:37,451 INFO L226 Difference]: Without dead ends: 1552 [2024-12-02 08:42:37,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:42:37,451 INFO L435 NwaCegarLoop]: 1105 mSDtfsCounter, 469 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:37,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 2056 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:42:37,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2024-12-02 08:42:37,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1284. [2024-12-02 08:42:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 832 states have (on average 1.8689903846153846) internal successors, (1555), 1279 states have internal predecessors, (1555), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:37,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1561 transitions. [2024-12-02 08:42:37,471 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1561 transitions. Word has length 12 [2024-12-02 08:42:37,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:37,471 INFO L471 AbstractCegarLoop]: Abstraction has 1284 states and 1561 transitions. [2024-12-02 08:42:37,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2024-12-02 08:42:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1561 transitions. [2024-12-02 08:42:37,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-12-02 08:42:37,472 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:37,472 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:37,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 08:42:37,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:37,672 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:37,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:37,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1789694881, now seen corresponding path program 1 times [2024-12-02 08:42:37,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:37,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926411193] [2024-12-02 08:42:37,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:37,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:37,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:37,674 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:37,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 08:42:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:37,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 08:42:37,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:37,787 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 [2024-12-02 08:42:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:37,814 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:42:37,814 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:37,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926411193] [2024-12-02 08:42:37,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926411193] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:37,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:37,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:42:37,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680459550] [2024-12-02 08:42:37,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:37,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:42:37,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:37,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:42:37,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:42:37,815 INFO L87 Difference]: Start difference. First operand 1284 states and 1561 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:39,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:39,554 INFO L93 Difference]: Finished difference Result 1452 states and 1692 transitions. [2024-12-02 08:42:39,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:42:39,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2024-12-02 08:42:39,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:39,556 INFO L225 Difference]: With dead ends: 1452 [2024-12-02 08:42:39,556 INFO L226 Difference]: Without dead ends: 1452 [2024-12-02 08:42:39,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:42:39,557 INFO L435 NwaCegarLoop]: 588 mSDtfsCounter, 967 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:39,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 1221 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 08:42:39,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2024-12-02 08:42:39,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 1261. [2024-12-02 08:42:39,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 832 states have (on average 1.7860576923076923) internal successors, (1486), 1256 states have internal predecessors, (1486), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:39,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1492 transitions. [2024-12-02 08:42:39,568 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1492 transitions. Word has length 14 [2024-12-02 08:42:39,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:39,568 INFO L471 AbstractCegarLoop]: Abstraction has 1261 states and 1492 transitions. [2024-12-02 08:42:39,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:39,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1492 transitions. [2024-12-02 08:42:39,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-12-02 08:42:39,569 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:39,569 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:39,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 08:42:39,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:39,769 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:39,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:39,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1789694880, now seen corresponding path program 1 times [2024-12-02 08:42:39,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:39,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077132239] [2024-12-02 08:42:39,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:39,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:39,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:39,771 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:39,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 08:42:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:39,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 08:42:39,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:39,893 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 [2024-12-02 08:42:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:39,967 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:42:39,967 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:39,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077132239] [2024-12-02 08:42:39,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077132239] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:39,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:39,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:42:39,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197247522] [2024-12-02 08:42:39,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:39,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:42:39,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:39,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:42:39,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:42:39,968 INFO L87 Difference]: Start difference. First operand 1261 states and 1492 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:42,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:42,386 INFO L93 Difference]: Finished difference Result 1454 states and 1663 transitions. [2024-12-02 08:42:42,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:42:42,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2024-12-02 08:42:42,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:42,389 INFO L225 Difference]: With dead ends: 1454 [2024-12-02 08:42:42,389 INFO L226 Difference]: Without dead ends: 1454 [2024-12-02 08:42:42,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:42:42,389 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 337 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:42,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1913 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 08:42:42,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2024-12-02 08:42:42,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1242. [2024-12-02 08:42:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 813 states have (on average 1.7761377613776137) internal successors, (1444), 1237 states have internal predecessors, (1444), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1450 transitions. [2024-12-02 08:42:42,400 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1450 transitions. Word has length 14 [2024-12-02 08:42:42,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:42,400 INFO L471 AbstractCegarLoop]: Abstraction has 1242 states and 1450 transitions. [2024-12-02 08:42:42,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:42,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1450 transitions. [2024-12-02 08:42:42,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-02 08:42:42,401 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:42,401 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:42,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 08:42:42,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:42,602 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:42,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:42,602 INFO L85 PathProgramCache]: Analyzing trace with hash -2029365873, now seen corresponding path program 1 times [2024-12-02 08:42:42,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:42,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350035308] [2024-12-02 08:42:42,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:42,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:42,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:42,604 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:42,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 08:42:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:42,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 08:42:42,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:42,787 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:42:42,787 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:42,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350035308] [2024-12-02 08:42:42,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350035308] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:42,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:42,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:42:42,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125185490] [2024-12-02 08:42:42,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:42,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:42:42,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:42,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:42:42,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:42:42,788 INFO L87 Difference]: Start difference. First operand 1242 states and 1450 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:43,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:43,285 INFO L93 Difference]: Finished difference Result 1489 states and 1653 transitions. [2024-12-02 08:42:43,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:42:43,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-12-02 08:42:43,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:43,288 INFO L225 Difference]: With dead ends: 1489 [2024-12-02 08:42:43,288 INFO L226 Difference]: Without dead ends: 1489 [2024-12-02 08:42:43,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:42:43,288 INFO L435 NwaCegarLoop]: 1123 mSDtfsCounter, 449 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:43,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 3069 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 08:42:43,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2024-12-02 08:42:43,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1244. [2024-12-02 08:42:43,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 815 states have (on average 1.7742331288343558) internal successors, (1446), 1239 states have internal predecessors, (1446), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:43,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1452 transitions. [2024-12-02 08:42:43,298 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1452 transitions. Word has length 15 [2024-12-02 08:42:43,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:43,298 INFO L471 AbstractCegarLoop]: Abstraction has 1244 states and 1452 transitions. [2024-12-02 08:42:43,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:43,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1452 transitions. [2024-12-02 08:42:43,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-02 08:42:43,299 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:43,299 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:43,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 08:42:43,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:43,499 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr524ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:43,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:43,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2029355055, now seen corresponding path program 1 times [2024-12-02 08:42:43,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:43,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604239902] [2024-12-02 08:42:43,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:43,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:43,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:43,501 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:43,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 08:42:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:43,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 08:42:43,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:43,674 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_47| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47|)))) is different from true [2024-12-02 08:42:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:43,674 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:42:43,674 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:43,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604239902] [2024-12-02 08:42:43,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604239902] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:43,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:43,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:42:43,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081246273] [2024-12-02 08:42:43,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:43,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:42:43,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:43,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:42:43,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-12-02 08:42:43,675 INFO L87 Difference]: Start difference. First operand 1244 states and 1452 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:44,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:44,792 INFO L93 Difference]: Finished difference Result 1261 states and 1459 transitions. [2024-12-02 08:42:44,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:42:44,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-12-02 08:42:44,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:44,795 INFO L225 Difference]: With dead ends: 1261 [2024-12-02 08:42:44,795 INFO L226 Difference]: Without dead ends: 1255 [2024-12-02 08:42:44,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-12-02 08:42:44,795 INFO L435 NwaCegarLoop]: 996 mSDtfsCounter, 81 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1104 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:44,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1556 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 467 Invalid, 0 Unknown, 1104 Unchecked, 1.1s Time] [2024-12-02 08:42:44,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2024-12-02 08:42:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1244. [2024-12-02 08:42:44,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 815 states have (on average 1.7730061349693251) internal successors, (1445), 1239 states have internal predecessors, (1445), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:44,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1451 transitions. [2024-12-02 08:42:44,806 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1451 transitions. Word has length 15 [2024-12-02 08:42:44,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:44,806 INFO L471 AbstractCegarLoop]: Abstraction has 1244 states and 1451 transitions. [2024-12-02 08:42:44,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:44,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1451 transitions. [2024-12-02 08:42:44,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-02 08:42:44,806 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:44,806 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:44,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 08:42:45,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:45,007 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr355REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:45,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:45,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1909716041, now seen corresponding path program 1 times [2024-12-02 08:42:45,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:45,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598127679] [2024-12-02 08:42:45,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:45,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:45,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:45,009 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:45,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 08:42:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:45,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:42:45,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:45,135 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:42:45,135 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:45,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598127679] [2024-12-02 08:42:45,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598127679] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:45,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:45,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:42:45,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782033376] [2024-12-02 08:42:45,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:45,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:42:45,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:45,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:42:45,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:42:45,136 INFO L87 Difference]: Start difference. First operand 1244 states and 1451 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:45,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:45,200 INFO L93 Difference]: Finished difference Result 1166 states and 1330 transitions. [2024-12-02 08:42:45,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:42:45,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-12-02 08:42:45,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:45,204 INFO L225 Difference]: With dead ends: 1166 [2024-12-02 08:42:45,204 INFO L226 Difference]: Without dead ends: 1166 [2024-12-02 08:42:45,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:42:45,204 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 45 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:45,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2773 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:42:45,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2024-12-02 08:42:45,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2024-12-02 08:42:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 756 states have (on average 1.7513227513227514) internal successors, (1324), 1161 states have internal predecessors, (1324), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:45,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1330 transitions. [2024-12-02 08:42:45,217 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1330 transitions. Word has length 16 [2024-12-02 08:42:45,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:45,218 INFO L471 AbstractCegarLoop]: Abstraction has 1166 states and 1330 transitions. [2024-12-02 08:42:45,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:45,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1330 transitions. [2024-12-02 08:42:45,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 08:42:45,218 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:45,218 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:45,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 08:42:45,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:45,419 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:45,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:45,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2113969666, now seen corresponding path program 1 times [2024-12-02 08:42:45,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:45,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925784449] [2024-12-02 08:42:45,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:45,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:45,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:45,421 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:45,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 08:42:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:45,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 08:42:45,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:45,561 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 [2024-12-02 08:42:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:45,646 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:42:45,646 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:45,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925784449] [2024-12-02 08:42:45,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925784449] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:45,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:45,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:42:45,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97970220] [2024-12-02 08:42:45,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:45,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:42:45,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:45,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:42:45,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:42:45,647 INFO L87 Difference]: Start difference. First operand 1166 states and 1330 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:47,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:47,970 INFO L93 Difference]: Finished difference Result 1560 states and 1786 transitions. [2024-12-02 08:42:47,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:42:47,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-12-02 08:42:47,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:47,973 INFO L225 Difference]: With dead ends: 1560 [2024-12-02 08:42:47,973 INFO L226 Difference]: Without dead ends: 1560 [2024-12-02 08:42:47,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:42:47,973 INFO L435 NwaCegarLoop]: 992 mSDtfsCounter, 597 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:47,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 1982 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 08:42:47,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2024-12-02 08:42:47,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1282. [2024-12-02 08:42:47,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 872 states have (on average 1.731651376146789) internal successors, (1510), 1277 states have internal predecessors, (1510), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1516 transitions. [2024-12-02 08:42:47,982 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1516 transitions. Word has length 20 [2024-12-02 08:42:47,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:47,982 INFO L471 AbstractCegarLoop]: Abstraction has 1282 states and 1516 transitions. [2024-12-02 08:42:47,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:47,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1516 transitions. [2024-12-02 08:42:47,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 08:42:47,983 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:47,983 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:47,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 08:42:48,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:48,184 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:48,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:48,184 INFO L85 PathProgramCache]: Analyzing trace with hash 2113969665, now seen corresponding path program 1 times [2024-12-02 08:42:48,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:48,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540067878] [2024-12-02 08:42:48,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:48,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:48,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:48,186 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:48,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 08:42:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:48,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:42:48,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:48,348 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:42:48,348 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:48,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540067878] [2024-12-02 08:42:48,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540067878] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:48,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:48,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:42:48,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906189849] [2024-12-02 08:42:48,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:48,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:42:48,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:48,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:42:48,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:42:48,349 INFO L87 Difference]: Start difference. First operand 1282 states and 1516 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:49,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:49,811 INFO L93 Difference]: Finished difference Result 1270 states and 1434 transitions. [2024-12-02 08:42:49,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:42:49,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-12-02 08:42:49,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:49,813 INFO L225 Difference]: With dead ends: 1270 [2024-12-02 08:42:49,813 INFO L226 Difference]: Without dead ends: 1270 [2024-12-02 08:42:49,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:42:49,814 INFO L435 NwaCegarLoop]: 645 mSDtfsCounter, 728 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:49,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1276 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 08:42:49,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2024-12-02 08:42:49,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1259. [2024-12-02 08:42:49,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 872 states have (on average 1.6261467889908257) internal successors, (1418), 1254 states have internal predecessors, (1418), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:49,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1424 transitions. [2024-12-02 08:42:49,822 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1424 transitions. Word has length 20 [2024-12-02 08:42:49,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:49,822 INFO L471 AbstractCegarLoop]: Abstraction has 1259 states and 1424 transitions. [2024-12-02 08:42:49,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:49,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1424 transitions. [2024-12-02 08:42:49,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 08:42:49,823 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:49,823 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:49,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 08:42:50,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:50,023 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:50,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:50,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1029891552, now seen corresponding path program 1 times [2024-12-02 08:42:50,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:50,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552829903] [2024-12-02 08:42:50,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:50,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:50,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:50,026 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:50,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 08:42:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:50,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 08:42:50,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:50,194 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 [2024-12-02 08:42:50,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:50,356 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:42:50,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:50,839 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:50,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552829903] [2024-12-02 08:42:50,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552829903] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:42:50,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:42:50,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-12-02 08:42:50,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122651077] [2024-12-02 08:42:50,840 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:42:50,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:42:50,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:50,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:42:50,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:42:50,841 INFO L87 Difference]: Start difference. First operand 1259 states and 1424 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:57,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:57,421 INFO L93 Difference]: Finished difference Result 1899 states and 2190 transitions. [2024-12-02 08:42:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:42:57,422 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 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 39 [2024-12-02 08:42:57,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:57,424 INFO L225 Difference]: With dead ends: 1899 [2024-12-02 08:42:57,425 INFO L226 Difference]: Without dead ends: 1899 [2024-12-02 08:42:57,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:42:57,425 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 1922 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:57,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1923 Valid, 2721 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-12-02 08:42:57,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2024-12-02 08:42:57,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1425. [2024-12-02 08:42:57,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1038 states have (on average 1.5915221579961465) internal successors, (1652), 1420 states have internal predecessors, (1652), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1658 transitions. [2024-12-02 08:42:57,440 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1658 transitions. Word has length 39 [2024-12-02 08:42:57,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:57,440 INFO L471 AbstractCegarLoop]: Abstraction has 1425 states and 1658 transitions. [2024-12-02 08:42:57,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:57,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1658 transitions. [2024-12-02 08:42:57,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 08:42:57,441 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:57,441 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:57,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 08:42:57,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:57,642 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr414ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:57,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:57,642 INFO L85 PathProgramCache]: Analyzing trace with hash -797594166, now seen corresponding path program 1 times [2024-12-02 08:42:57,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:57,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405731170] [2024-12-02 08:42:57,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:57,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:57,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:57,644 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:57,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 08:42:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:57,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:42:57,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:57,825 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:42:57,825 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:57,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405731170] [2024-12-02 08:42:57,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405731170] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:57,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:57,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:42:57,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927240174] [2024-12-02 08:42:57,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:57,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:42:57,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:57,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:42:57,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:42:57,826 INFO L87 Difference]: Start difference. First operand 1425 states and 1658 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:57,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:57,869 INFO L93 Difference]: Finished difference Result 1407 states and 1628 transitions. [2024-12-02 08:42:57,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:42:57,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-12-02 08:42:57,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:57,872 INFO L225 Difference]: With dead ends: 1407 [2024-12-02 08:42:57,872 INFO L226 Difference]: Without dead ends: 1407 [2024-12-02 08:42:57,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:42:57,873 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 27 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:57,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2696 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:42:57,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2024-12-02 08:42:57,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1407. [2024-12-02 08:42:57,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1020 states have (on average 1.5901960784313725) internal successors, (1622), 1402 states have internal predecessors, (1622), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:57,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1628 transitions. [2024-12-02 08:42:57,883 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1628 transitions. Word has length 50 [2024-12-02 08:42:57,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:57,883 INFO L471 AbstractCegarLoop]: Abstraction has 1407 states and 1628 transitions. [2024-12-02 08:42:57,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:57,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1628 transitions. [2024-12-02 08:42:57,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-02 08:42:57,883 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:57,883 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:57,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 08:42:58,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:58,084 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:58,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:58,084 INFO L85 PathProgramCache]: Analyzing trace with hash 24010691, now seen corresponding path program 1 times [2024-12-02 08:42:58,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:58,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1145950789] [2024-12-02 08:42:58,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:58,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:58,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:58,086 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:58,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 08:42:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:58,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:42:58,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:58,288 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:42:58,288 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:58,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145950789] [2024-12-02 08:42:58,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145950789] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:58,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:58,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:42:58,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238955553] [2024-12-02 08:42:58,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:58,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:42:58,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:58,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:42:58,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:42:58,289 INFO L87 Difference]: Start difference. First operand 1407 states and 1628 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:58,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:58,356 INFO L93 Difference]: Finished difference Result 1092 states and 1188 transitions. [2024-12-02 08:42:58,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:42:58,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-12-02 08:42:58,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:58,359 INFO L225 Difference]: With dead ends: 1092 [2024-12-02 08:42:58,359 INFO L226 Difference]: Without dead ends: 1092 [2024-12-02 08:42:58,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:42:58,359 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 56 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:58,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2522 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:42:58,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2024-12-02 08:42:58,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1090. [2024-12-02 08:42:58,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 726 states have (on average 1.6253443526170799) internal successors, (1180), 1085 states have internal predecessors, (1180), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:58,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1186 transitions. [2024-12-02 08:42:58,368 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1186 transitions. Word has length 55 [2024-12-02 08:42:58,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:58,369 INFO L471 AbstractCegarLoop]: Abstraction has 1090 states and 1186 transitions. [2024-12-02 08:42:58,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:58,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1186 transitions. [2024-12-02 08:42:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 08:42:58,369 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:58,369 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:58,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 08:42:58,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:58,570 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr414ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:58,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:58,570 INFO L85 PathProgramCache]: Analyzing trace with hash -355383530, now seen corresponding path program 1 times [2024-12-02 08:42:58,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:58,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254348198] [2024-12-02 08:42:58,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:58,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:58,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:58,572 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:58,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 08:42:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:58,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 08:42:58,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:58,762 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 08:42:58,763 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 08:42:58,763 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 08:42:58,766 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 30 treesize of output 39 [2024-12-02 08:42:58,822 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:42:58,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2024-12-02 08:42:58,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:42:58,861 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:42:58,861 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:42:58,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254348198] [2024-12-02 08:42:58,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254348198] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:42:58,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:42:58,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:42:58,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16312477] [2024-12-02 08:42:58,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:42:58,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:42:58,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:42:58,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:42:58,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:42:58,862 INFO L87 Difference]: Start difference. First operand 1090 states and 1186 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:59,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:42:59,196 INFO L93 Difference]: Finished difference Result 1562 states and 1688 transitions. [2024-12-02 08:42:59,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:42:59,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2024-12-02 08:42:59,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:42:59,201 INFO L225 Difference]: With dead ends: 1562 [2024-12-02 08:42:59,201 INFO L226 Difference]: Without dead ends: 1559 [2024-12-02 08:42:59,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:42:59,202 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 1852 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:42:59,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1858 Valid, 3170 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:42:59,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2024-12-02 08:42:59,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1036. [2024-12-02 08:42:59,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 672 states have (on average 1.6726190476190477) internal successors, (1124), 1031 states have internal predecessors, (1124), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:42:59,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1130 transitions. [2024-12-02 08:42:59,212 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1130 transitions. Word has length 58 [2024-12-02 08:42:59,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:42:59,212 INFO L471 AbstractCegarLoop]: Abstraction has 1036 states and 1130 transitions. [2024-12-02 08:42:59,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:42:59,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1130 transitions. [2024-12-02 08:42:59,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 08:42:59,212 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:42:59,212 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:42:59,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 08:42:59,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:59,413 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:42:59,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:42:59,413 INFO L85 PathProgramCache]: Analyzing trace with hash 54784503, now seen corresponding path program 1 times [2024-12-02 08:42:59,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:42:59,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520484941] [2024-12-02 08:42:59,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:42:59,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:42:59,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:42:59,415 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:42:59,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 08:42:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:42:59,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 08:42:59,625 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:42:59,631 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 [2024-12-02 08:43:00,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:43:00,018 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 [2024-12-02 08:43:00,029 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 08:43:00,029 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 [2024-12-02 08:43:00,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:00,033 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:43:00,033 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:43:00,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520484941] [2024-12-02 08:43:00,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520484941] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:43:00,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:43:00,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:43:00,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512201401] [2024-12-02 08:43:00,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:43:00,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:43:00,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:43:00,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:43:00,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:43:00,034 INFO L87 Difference]: Start difference. First operand 1036 states and 1130 transitions. Second operand has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:01,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:43:01,556 INFO L93 Difference]: Finished difference Result 998 states and 1092 transitions. [2024-12-02 08:43:01,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:43:01,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-12-02 08:43:01,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:43:01,559 INFO L225 Difference]: With dead ends: 998 [2024-12-02 08:43:01,559 INFO L226 Difference]: Without dead ends: 998 [2024-12-02 08:43:01,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:43:01,559 INFO L435 NwaCegarLoop]: 450 mSDtfsCounter, 557 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:43:01,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 622 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 08:43:01,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-12-02 08:43:01,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 961. [2024-12-02 08:43:01,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 635 states have (on average 1.5937007874015747) internal successors, (1012), 956 states have internal predecessors, (1012), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:43:01,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1018 transitions. [2024-12-02 08:43:01,568 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1018 transitions. Word has length 63 [2024-12-02 08:43:01,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:43:01,569 INFO L471 AbstractCegarLoop]: Abstraction has 961 states and 1018 transitions. [2024-12-02 08:43:01,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:01,569 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1018 transitions. [2024-12-02 08:43:01,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 08:43:01,569 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:43:01,570 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:43:01,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 08:43:01,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:43:01,770 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:43:01,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:43:01,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2089651903, now seen corresponding path program 1 times [2024-12-02 08:43:01,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:43:01,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827846644] [2024-12-02 08:43:01,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:43:01,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:43:01,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:43:01,773 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:43:01,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 08:43:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:43:01,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 08:43:01,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:43:01,990 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 [2024-12-02 08:43:02,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:43:02,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 08:43:02,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:02,029 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:43:02,029 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:43:02,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827846644] [2024-12-02 08:43:02,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827846644] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:43:02,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:43:02,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:43:02,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299924998] [2024-12-02 08:43:02,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:43:02,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:43:02,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:43:02,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:43:02,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:43:02,030 INFO L87 Difference]: Start difference. First operand 961 states and 1018 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:03,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:43:03,702 INFO L93 Difference]: Finished difference Result 960 states and 1017 transitions. [2024-12-02 08:43:03,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:43:03,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-12-02 08:43:03,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:43:03,704 INFO L225 Difference]: With dead ends: 960 [2024-12-02 08:43:03,704 INFO L226 Difference]: Without dead ends: 960 [2024-12-02 08:43:03,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:43:03,705 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 2 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:43:03,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2187 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 08:43:03,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2024-12-02 08:43:03,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 960. [2024-12-02 08:43:03,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 635 states have (on average 1.5921259842519686) internal successors, (1011), 955 states have internal predecessors, (1011), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:43:03,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1017 transitions. [2024-12-02 08:43:03,717 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1017 transitions. Word has length 68 [2024-12-02 08:43:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:43:03,717 INFO L471 AbstractCegarLoop]: Abstraction has 960 states and 1017 transitions. [2024-12-02 08:43:03,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:03,718 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1017 transitions. [2024-12-02 08:43:03,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 08:43:03,718 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:43:03,718 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:43:03,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 08:43:03,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:43:03,918 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:43:03,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:43:03,919 INFO L85 PathProgramCache]: Analyzing trace with hash -2089651902, now seen corresponding path program 1 times [2024-12-02 08:43:03,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:43:03,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789934660] [2024-12-02 08:43:03,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:43:03,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:43:03,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:43:03,921 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:43:03,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 08:43:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:43:04,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 08:43:04,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:43:04,145 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 [2024-12-02 08:43:04,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 08:43:04,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:43:04,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-12-02 08:43:04,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:04,223 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:43:04,223 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:43:04,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789934660] [2024-12-02 08:43:04,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789934660] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:43:04,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:43:04,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:43:04,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807788319] [2024-12-02 08:43:04,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:43:04,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:43:04,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:43:04,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:43:04,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:43:04,224 INFO L87 Difference]: Start difference. First operand 960 states and 1017 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:06,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:43:06,327 INFO L93 Difference]: Finished difference Result 959 states and 1016 transitions. [2024-12-02 08:43:06,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:43:06,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-12-02 08:43:06,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:43:06,329 INFO L225 Difference]: With dead ends: 959 [2024-12-02 08:43:06,329 INFO L226 Difference]: Without dead ends: 959 [2024-12-02 08:43:06,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:43:06,330 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 1 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:43:06,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2175 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 08:43:06,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2024-12-02 08:43:06,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2024-12-02 08:43:06,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 634 states have (on average 1.5930599369085174) internal successors, (1010), 954 states have internal predecessors, (1010), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:43:06,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1016 transitions. [2024-12-02 08:43:06,340 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1016 transitions. Word has length 68 [2024-12-02 08:43:06,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:43:06,341 INFO L471 AbstractCegarLoop]: Abstraction has 959 states and 1016 transitions. [2024-12-02 08:43:06,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:43:06,341 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1016 transitions. [2024-12-02 08:43:06,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 08:43:06,342 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:43:06,342 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:43:06,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 08:43:06,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:43:06,542 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:43:06,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:43:06,542 INFO L85 PathProgramCache]: Analyzing trace with hash 2016953673, now seen corresponding path program 1 times [2024-12-02 08:43:06,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:43:06,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556669328] [2024-12-02 08:43:06,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:43:06,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:43:06,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:43:06,544 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:43:06,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 08:43:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:43:06,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:43:06,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:43:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:06,777 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:43:06,777 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:43:06,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556669328] [2024-12-02 08:43:06,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556669328] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:43:06,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:43:06,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:43:06,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065739447] [2024-12-02 08:43:06,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:43:06,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:43:06,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:43:06,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:43:06,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:43:06,778 INFO L87 Difference]: Start difference. First operand 959 states and 1016 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-12-02 08:43:06,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:43:06,812 INFO L93 Difference]: Finished difference Result 962 states and 1020 transitions. [2024-12-02 08:43:06,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:43:06,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 76 [2024-12-02 08:43:06,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:43:06,816 INFO L225 Difference]: With dead ends: 962 [2024-12-02 08:43:06,816 INFO L226 Difference]: Without dead ends: 962 [2024-12-02 08:43:06,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:43:06,817 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 0 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:43:06,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2509 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:43:06,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-12-02 08:43:06,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 962. [2024-12-02 08:43:06,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 636 states have (on average 1.5927672955974843) internal successors, (1013), 957 states have internal predecessors, (1013), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 08:43:06,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1020 transitions. [2024-12-02 08:43:06,828 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1020 transitions. Word has length 76 [2024-12-02 08:43:06,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:43:06,828 INFO L471 AbstractCegarLoop]: Abstraction has 962 states and 1020 transitions. [2024-12-02 08:43:06,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-12-02 08:43:06,829 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1020 transitions. [2024-12-02 08:43:06,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 08:43:06,829 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:43:06,829 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:43:06,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 08:43:07,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:43:07,030 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:43:07,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:43:07,030 INFO L85 PathProgramCache]: Analyzing trace with hash -944801367, now seen corresponding path program 1 times [2024-12-02 08:43:07,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:43:07,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878177956] [2024-12-02 08:43:07,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:43:07,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:43:07,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:43:07,032 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:43:07,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 08:43:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:43:07,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 08:43:07,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:43:07,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:07,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:43:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:07,330 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:43:07,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878177956] [2024-12-02 08:43:07,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878177956] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:43:07,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:43:07,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-12-02 08:43:07,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364495037] [2024-12-02 08:43:07,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:43:07,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:43:07,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:43:07,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:43:07,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:43:07,331 INFO L87 Difference]: Start difference. First operand 962 states and 1020 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 08:43:07,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:43:07,441 INFO L93 Difference]: Finished difference Result 974 states and 1037 transitions. [2024-12-02 08:43:07,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 08:43:07,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2024-12-02 08:43:07,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:43:07,444 INFO L225 Difference]: With dead ends: 974 [2024-12-02 08:43:07,444 INFO L226 Difference]: Without dead ends: 974 [2024-12-02 08:43:07,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:43:07,445 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 5 mSDsluCounter, 4171 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5009 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:43:07,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 5009 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:43:07,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2024-12-02 08:43:07,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 972. [2024-12-02 08:43:07,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 645 states have (on average 1.5937984496124031) internal successors, (1028), 966 states have internal predecessors, (1028), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 08:43:07,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1035 transitions. [2024-12-02 08:43:07,458 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1035 transitions. Word has length 77 [2024-12-02 08:43:07,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:43:07,458 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1035 transitions. [2024-12-02 08:43:07,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 08:43:07,459 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1035 transitions. [2024-12-02 08:43:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 08:43:07,459 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:43:07,459 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:43:07,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 08:43:07,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:43:07,660 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:43:07,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:43:07,660 INFO L85 PathProgramCache]: Analyzing trace with hash 915561801, now seen corresponding path program 2 times [2024-12-02 08:43:07,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:43:07,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823119920] [2024-12-02 08:43:07,660 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:43:07,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:43:07,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:43:07,662 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:43:07,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 08:43:40,969 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:43:40,969 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:43:40,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 08:43:40,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:43:40,992 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 [2024-12-02 08:43:41,087 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 [2024-12-02 08:43:41,098 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 08:43:41,098 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 [2024-12-02 08:43:41,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:43:41,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 08:43:41,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-12-02 08:43:41,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 08:43:41,326 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:43:41,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:43:41,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:43:41,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-12-02 08:43:41,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 08:43:41,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 08:43:41,399 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:43:41,569 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1273 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1273) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv16 32)) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_1272 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1273 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1273) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:43:41,573 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:43:41,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823119920] [2024-12-02 08:43:41,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823119920] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:43:41,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [608606533] [2024-12-02 08:43:41,573 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:43:41,573 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:43:41,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:43:41,575 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:43:41,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-12-02 08:43:42,689 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:43:42,689 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:43:42,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 08:43:42,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:43:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:42,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:43:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:43,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [608606533] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:43:43,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:43:43,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-12-02 08:43:43,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082369548] [2024-12-02 08:43:43,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:43:43,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 08:43:43,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:43:43,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 08:43:43,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=423, Unknown=1, NotChecked=42, Total=552 [2024-12-02 08:43:43,095 INFO L87 Difference]: Start difference. First operand 972 states and 1035 transitions. Second operand has 21 states, 20 states have (on average 7.75) internal successors, (155), 21 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 08:43:52,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:43:52,404 INFO L93 Difference]: Finished difference Result 992 states and 1059 transitions. [2024-12-02 08:43:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 08:43:52,405 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 7.75) internal successors, (155), 21 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 80 [2024-12-02 08:43:52,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:43:52,407 INFO L225 Difference]: With dead ends: 992 [2024-12-02 08:43:52,407 INFO L226 Difference]: Without dead ends: 982 [2024-12-02 08:43:52,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=314, Invalid=1669, Unknown=1, NotChecked=86, Total=2070 [2024-12-02 08:43:52,408 INFO L435 NwaCegarLoop]: 561 mSDtfsCounter, 565 mSDsluCounter, 7370 mSDsCounter, 0 mSdLazyCounter, 6004 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 7931 SdHoareTripleChecker+Invalid, 6026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 6004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:43:52,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 7931 Invalid, 6026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 6004 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-12-02 08:43:52,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2024-12-02 08:43:52,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 980. [2024-12-02 08:43:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 654 states have (on average 1.5825688073394495) internal successors, (1035), 974 states have internal predecessors, (1035), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 08:43:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1042 transitions. [2024-12-02 08:43:52,420 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1042 transitions. Word has length 80 [2024-12-02 08:43:52,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:43:52,420 INFO L471 AbstractCegarLoop]: Abstraction has 980 states and 1042 transitions. [2024-12-02 08:43:52,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 7.75) internal successors, (155), 21 states have internal predecessors, (155), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 08:43:52,420 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1042 transitions. [2024-12-02 08:43:52,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 08:43:52,421 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:43:52,421 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:43:52,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-12-02 08:43:52,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-12-02 08:43:52,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 08:43:52,821 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:43:52,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:43:52,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1615134392, now seen corresponding path program 1 times [2024-12-02 08:43:52,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:43:52,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458522547] [2024-12-02 08:43:52,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:43:52,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:43:52,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:43:52,823 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:43:52,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 08:43:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:43:53,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 08:43:53,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:43:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:53,219 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:43:53,743 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:43:53,743 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:43:53,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458522547] [2024-12-02 08:43:53,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458522547] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:43:53,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:43:53,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-12-02 08:43:53,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570617650] [2024-12-02 08:43:53,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:43:53,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 08:43:53,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:43:53,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 08:43:53,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-12-02 08:43:53,744 INFO L87 Difference]: Start difference. First operand 980 states and 1042 transitions. Second operand has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 08:43:55,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:43:55,211 INFO L93 Difference]: Finished difference Result 1004 states and 1081 transitions. [2024-12-02 08:43:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 08:43:55,212 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 86 [2024-12-02 08:43:55,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:43:55,213 INFO L225 Difference]: With dead ends: 1004 [2024-12-02 08:43:55,213 INFO L226 Difference]: Without dead ends: 998 [2024-12-02 08:43:55,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 08:43:55,214 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 25 mSDsluCounter, 9176 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 10013 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:43:55,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 10013 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 08:43:55,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-12-02 08:43:55,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 998. [2024-12-02 08:43:55,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 672 states have (on average 1.5744047619047619) internal successors, (1058), 992 states have internal predecessors, (1058), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 08:43:55,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1065 transitions. [2024-12-02 08:43:55,222 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1065 transitions. Word has length 86 [2024-12-02 08:43:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:43:55,222 INFO L471 AbstractCegarLoop]: Abstraction has 998 states and 1065 transitions. [2024-12-02 08:43:55,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 08:43:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1065 transitions. [2024-12-02 08:43:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 08:43:55,223 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:43:55,223 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:43:55,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 08:43:55,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:43:55,423 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:43:55,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:43:55,424 INFO L85 PathProgramCache]: Analyzing trace with hash -433370808, now seen corresponding path program 2 times [2024-12-02 08:43:55,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:43:55,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870117864] [2024-12-02 08:43:55,424 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:43:55,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:43:55,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:43:55,426 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:43:55,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-02 08:44:14,644 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:44:14,644 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:44:14,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 08:44:14,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:44:14,757 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 08:44:14,758 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 [2024-12-02 08:44:14,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:44:15,044 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:44:15,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:44:15,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-12-02 08:44:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-12-02 08:44:15,093 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:44:15,221 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-12-02 08:44:15,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-12-02 08:44:15,225 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1852 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1852) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2024-12-02 08:44:15,227 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:44:15,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870117864] [2024-12-02 08:44:15,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870117864] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:44:15,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [197687004] [2024-12-02 08:44:15,227 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:44:15,227 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:44:15,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:44:15,228 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:44:15,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-12-02 08:44:16,587 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:44:16,587 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:44:16,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 08:44:16,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:44:17,203 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:44:17,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:44:18,839 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:44:18,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [197687004] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:44:18,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:44:18,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 26, 26] total 59 [2024-12-02 08:44:18,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462758183] [2024-12-02 08:44:18,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:44:18,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-12-02 08:44:18,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:44:18,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-12-02 08:44:18,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2024-12-02 08:44:18,841 INFO L87 Difference]: Start difference. First operand 998 states and 1065 transitions. Second operand has 59 states, 58 states have (on average 3.2413793103448274) internal successors, (188), 58 states have internal predecessors, (188), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 08:44:39,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:44:39,473 INFO L93 Difference]: Finished difference Result 1039 states and 1138 transitions. [2024-12-02 08:44:39,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-12-02 08:44:39,473 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 3.2413793103448274) internal successors, (188), 58 states have internal predecessors, (188), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 98 [2024-12-02 08:44:39,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:44:39,475 INFO L225 Difference]: With dead ends: 1039 [2024-12-02 08:44:39,475 INFO L226 Difference]: Without dead ends: 1035 [2024-12-02 08:44:39,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3457 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=3757, Invalid=15152, Unknown=1, NotChecked=272, Total=19182 [2024-12-02 08:44:39,478 INFO L435 NwaCegarLoop]: 561 mSDtfsCounter, 600 mSDsluCounter, 16313 mSDsCounter, 0 mSdLazyCounter, 11635 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 16874 SdHoareTripleChecker+Invalid, 11705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 11635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:44:39,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 16874 Invalid, 11705 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 11635 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2024-12-02 08:44:39,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-12-02 08:44:39,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1031. [2024-12-02 08:44:39,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 706 states have (on average 1.5623229461756374) internal successors, (1103), 1025 states have internal predecessors, (1103), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 08:44:39,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1110 transitions. [2024-12-02 08:44:39,490 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1110 transitions. Word has length 98 [2024-12-02 08:44:39,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:44:39,490 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1110 transitions. [2024-12-02 08:44:39,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 3.2413793103448274) internal successors, (188), 58 states have internal predecessors, (188), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 08:44:39,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1110 transitions. [2024-12-02 08:44:39,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-12-02 08:44:39,491 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:44:39,491 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:44:39,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-12-02 08:44:39,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2024-12-02 08:44:39,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 08:44:39,892 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:44:39,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:44:39,892 INFO L85 PathProgramCache]: Analyzing trace with hash -2046610754, now seen corresponding path program 1 times [2024-12-02 08:44:39,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:44:39,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751420082] [2024-12-02 08:44:39,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:44:39,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:44:39,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:44:39,895 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:44:39,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-12-02 08:44:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:44:40,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-12-02 08:44:40,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:44:40,428 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 08:44:40,428 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 [2024-12-02 08:44:40,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:44:40,929 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:44:40,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:44:41,033 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:44:41,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:44:41,049 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 33 treesize of output 15 [2024-12-02 08:44:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 08:44:41,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:44:41,107 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2511 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2511) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-12-02 08:44:41,116 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2511 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-12-02 08:44:41,468 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-12-02 08:44:41,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2024-12-02 08:44:41,477 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2557 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2511 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2557))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2511)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2024-12-02 08:44:41,479 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:44:41,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751420082] [2024-12-02 08:44:41,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751420082] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:44:41,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [555277914] [2024-12-02 08:44:41,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:44:41,479 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:44:41,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:44:41,481 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:44:41,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-12-02 08:44:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:44:43,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-02 08:44:43,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:44:43,494 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 [2024-12-02 08:44:43,617 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-02 08:44:43,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-12-02 08:44:43,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:44:43,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-12-02 08:44:44,646 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:44:44,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:44:44,800 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:44:44,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:44:44,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-12-02 08:44:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 08:44:44,862 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:44:44,936 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2981 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2981) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-12-02 08:44:45,275 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2981 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3027 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3027))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2981)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:44:45,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [555277914] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:44:45,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:44:45,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2024-12-02 08:44:45,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614310391] [2024-12-02 08:44:45,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:44:45,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 08:44:45,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:44:45,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 08:44:45,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=345, Unknown=15, NotChecked=210, Total=650 [2024-12-02 08:44:45,278 INFO L87 Difference]: Start difference. First operand 1031 states and 1110 transitions. Second operand has 19 states, 16 states have (on average 6.3125) internal successors, (101), 18 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 08:44:50,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:44:50,733 INFO L93 Difference]: Finished difference Result 1032 states and 1111 transitions. [2024-12-02 08:44:50,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 08:44:50,734 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 6.3125) internal successors, (101), 18 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 123 [2024-12-02 08:44:50,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:44:50,736 INFO L225 Difference]: With dead ends: 1032 [2024-12-02 08:44:50,736 INFO L226 Difference]: Without dead ends: 1032 [2024-12-02 08:44:50,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=456, Unknown=15, NotChecked=240, Total=812 [2024-12-02 08:44:50,736 INFO L435 NwaCegarLoop]: 560 mSDtfsCounter, 546 mSDsluCounter, 4386 mSDsCounter, 0 mSdLazyCounter, 3678 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 4946 SdHoareTripleChecker+Invalid, 3686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:44:50,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 4946 Invalid, 3686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 3678 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-12-02 08:44:50,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2024-12-02 08:44:50,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 1030. [2024-12-02 08:44:50,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 706 states have (on average 1.5609065155807365) internal successors, (1102), 1024 states have internal predecessors, (1102), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 08:44:50,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1109 transitions. [2024-12-02 08:44:50,743 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1109 transitions. Word has length 123 [2024-12-02 08:44:50,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:44:50,743 INFO L471 AbstractCegarLoop]: Abstraction has 1030 states and 1109 transitions. [2024-12-02 08:44:50,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 6.3125) internal successors, (101), 18 states have internal predecessors, (101), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 08:44:50,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1109 transitions. [2024-12-02 08:44:50,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-12-02 08:44:50,744 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:44:50,744 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:44:50,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-12-02 08:44:50,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2024-12-02 08:44:51,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 08:44:51,145 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:44:51,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:44:51,145 INFO L85 PathProgramCache]: Analyzing trace with hash -2046610753, now seen corresponding path program 1 times [2024-12-02 08:44:51,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:44:51,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878909966] [2024-12-02 08:44:51,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:44:51,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:44:51,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:44:51,147 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:44:51,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-12-02 08:44:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:44:51,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-12-02 08:44:51,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:44:51,693 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 08:44:51,693 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 [2024-12-02 08:44:51,700 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 [2024-12-02 08:44:51,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:44:51,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 08:44:51,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-12-02 08:44:51,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 08:44:52,349 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:44:52,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:44:52,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:44:52,451 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:44:52,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:44:52,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:44:52,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-12-02 08:44:52,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 08:44:52,510 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 08:44:52,510 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:44:52,721 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3496 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_3496) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_3496 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3495 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_3496) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_3495) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-12-02 08:44:53,846 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3588 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3496 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3587 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3587) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3588) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3496) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3588 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3496 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3587 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3495 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3588))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3587) .cse2 v_ArrVal_3496) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_3495) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-12-02 08:44:53,852 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:44:53,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878909966] [2024-12-02 08:44:53,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878909966] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:44:53,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [617409607] [2024-12-02 08:44:53,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:44:53,853 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:44:53,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:44:53,854 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:44:53,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-12-02 08:46:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:46:05,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-12-02 08:46:05,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:46:05,114 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 [2024-12-02 08:46:05,206 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 [2024-12-02 08:46:05,216 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 08:46:05,216 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 [2024-12-02 08:46:05,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:46:05,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 08:46:05,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-12-02 08:46:05,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 08:46:05,834 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:46:05,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:46:05,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:46:05,904 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:46:05,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:46:05,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:46:05,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-12-02 08:46:05,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 08:46:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 08:46:05,936 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:46:05,972 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4058 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_4058 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4057 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4057) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:46:05,993 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_4058 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4057 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_4058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_4057) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_4058 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_4058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2024-12-02 08:46:07,034 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4150 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4149 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4058 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4149) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4150) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4150 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4149 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4058 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4057 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4150))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4149) .cse2 v_ArrVal_4058) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_4057) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-12-02 08:46:07,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [617409607] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:46:07,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:46:07,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-12-02 08:46:07,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460682029] [2024-12-02 08:46:07,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:46:07,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 08:46:07,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:46:07,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 08:46:07,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=124, Unknown=11, NotChecked=130, Total=306 [2024-12-02 08:46:07,041 INFO L87 Difference]: Start difference. First operand 1030 states and 1109 transitions. Second operand has 10 states, 8 states have (on average 10.375) internal successors, (83), 10 states have internal predecessors, (83), 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) [2024-12-02 08:46:10,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:46:10,992 INFO L93 Difference]: Finished difference Result 1029 states and 1108 transitions. [2024-12-02 08:46:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 08:46:10,992 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 10.375) internal successors, (83), 10 states have internal predecessors, (83), 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 123 [2024-12-02 08:46:10,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:46:10,995 INFO L225 Difference]: With dead ends: 1029 [2024-12-02 08:46:10,995 INFO L226 Difference]: Without dead ends: 1029 [2024-12-02 08:46:10,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 239 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=242, Unknown=11, NotChecked=180, Total=506 [2024-12-02 08:46:10,995 INFO L435 NwaCegarLoop]: 561 mSDtfsCounter, 549 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 2420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-12-02 08:46:10,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 2023 Invalid, 2420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-12-02 08:46:11,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2024-12-02 08:46:11,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1029. [2024-12-02 08:46:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 706 states have (on average 1.5594900849858357) internal successors, (1101), 1023 states have internal predecessors, (1101), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 08:46:11,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1108 transitions. [2024-12-02 08:46:11,006 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1108 transitions. Word has length 123 [2024-12-02 08:46:11,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:46:11,006 INFO L471 AbstractCegarLoop]: Abstraction has 1029 states and 1108 transitions. [2024-12-02 08:46:11,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 10.375) internal successors, (83), 10 states have internal predecessors, (83), 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) [2024-12-02 08:46:11,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1108 transitions. [2024-12-02 08:46:11,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-02 08:46:11,006 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:46:11,006 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:46:11,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-12-02 08:46:11,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2024-12-02 08:46:11,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 08:46:11,407 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:46:11,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:46:11,408 INFO L85 PathProgramCache]: Analyzing trace with hash 775089327, now seen corresponding path program 1 times [2024-12-02 08:46:11,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:46:11,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2146559633] [2024-12-02 08:46:11,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:46:11,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:46:11,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:46:11,409 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:46:11,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-12-02 08:46:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:46:11,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-12-02 08:46:11,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:46:11,901 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 [2024-12-02 08:46:11,983 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 08:46:11,983 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 [2024-12-02 08:46:11,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:46:12,213 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:46:12,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-12-02 08:46:12,256 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:46:12,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-12-02 08:46:12,306 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:46:12,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:46:12,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-12-02 08:46:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 08:46:12,364 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:46:12,404 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-12-02 08:46:12,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-12-02 08:46:12,409 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4589 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4589) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem39#1.base|)) is different from false [2024-12-02 08:46:12,415 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4589 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_4589) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse0)))) is different from false [2024-12-02 08:46:12,425 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4589 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4588 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4588)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_4589) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2024-12-02 08:46:12,433 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4589 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4588 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4588))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_4589) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-12-02 08:46:12,754 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4589 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4588 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4635))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4588)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_4589) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-12-02 08:46:12,756 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:46:12,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146559633] [2024-12-02 08:46:12,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146559633] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:46:12,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [16895763] [2024-12-02 08:46:12,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:46:12,757 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:46:12,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:46:12,758 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:46:12,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-12-02 08:46:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:46:34,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-12-02 08:46:34,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:46:34,034 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 [2024-12-02 08:46:34,141 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-02 08:46:34,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-12-02 08:46:34,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:46:34,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-12-02 08:46:34,951 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:46:34,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:46:35,050 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:46:35,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:46:35,121 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:46:35,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:46:35,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-12-02 08:46:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 08:46:35,177 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:46:35,197 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5075 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5075) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-12-02 08:46:35,203 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5075 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5075) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2024-12-02 08:46:35,213 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5074 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5075 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5074))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5075)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:46:35,222 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5074 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5075 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5074))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5075)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:46:35,543 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5074 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5121 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5121))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5074)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5075)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2024-12-02 08:46:35,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [16895763] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:46:35,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:46:35,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-12-02 08:46:35,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418831024] [2024-12-02 08:46:35,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:46:35,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 08:46:35,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:46:35,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 08:46:35,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=356, Unknown=10, NotChecked=470, Total=930 [2024-12-02 08:46:35,547 INFO L87 Difference]: Start difference. First operand 1029 states and 1108 transitions. Second operand has 20 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 20 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 08:46:41,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:46:41,286 INFO L93 Difference]: Finished difference Result 1030 states and 1109 transitions. [2024-12-02 08:46:41,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 08:46:41,286 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 20 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 126 [2024-12-02 08:46:41,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:46:41,288 INFO L225 Difference]: With dead ends: 1030 [2024-12-02 08:46:41,288 INFO L226 Difference]: Without dead ends: 1030 [2024-12-02 08:46:41,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=389, Unknown=10, NotChecked=490, Total=992 [2024-12-02 08:46:41,288 INFO L435 NwaCegarLoop]: 561 mSDtfsCounter, 537 mSDsluCounter, 4903 mSDsCounter, 0 mSdLazyCounter, 4012 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 5464 SdHoareTripleChecker+Invalid, 4018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:46:41,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 5464 Invalid, 4018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4012 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-12-02 08:46:41,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2024-12-02 08:46:41,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1028. [2024-12-02 08:46:41,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 706 states have (on average 1.5580736543909348) internal successors, (1100), 1022 states have internal predecessors, (1100), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 08:46:41,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1107 transitions. [2024-12-02 08:46:41,299 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1107 transitions. Word has length 126 [2024-12-02 08:46:41,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:46:41,299 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1107 transitions. [2024-12-02 08:46:41,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 20 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 08:46:41,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1107 transitions. [2024-12-02 08:46:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-02 08:46:41,300 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:46:41,300 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:46:41,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2024-12-02 08:46:41,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-12-02 08:46:41,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:46:41,700 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:46:41,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:46:41,701 INFO L85 PathProgramCache]: Analyzing trace with hash 775089328, now seen corresponding path program 1 times [2024-12-02 08:46:41,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:46:41,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916083318] [2024-12-02 08:46:41,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:46:41,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:46:41,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:46:41,703 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:46:41,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-12-02 08:46:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:46:42,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-12-02 08:46:42,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:46:42,250 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 [2024-12-02 08:46:42,351 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 08:46:42,352 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 [2024-12-02 08:46:42,356 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 [2024-12-02 08:46:42,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 08:46:42,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:46:42,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-12-02 08:46:42,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 08:46:42,958 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:46:42,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:46:42,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:46:43,050 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:46:43,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:46:43,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:46:43,134 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:46:43,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:46:43,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:46:43,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-12-02 08:46:43,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 08:46:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 08:46:43,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:46:43,424 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5608 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_5608) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-12-02 08:46:43,476 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5605) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5606) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_5605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5608 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5606))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5605) .cse2 v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5608) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-12-02 08:46:43,544 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_5605) (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_5606) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5608 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_5606))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_5605) .cse3 v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_5608) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-12-02 08:46:44,495 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5700 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5699 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5700))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5699) .cse1 v_ArrVal_5605) (select (select (store .cse2 .cse1 v_ArrVal_5606) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_5607))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5608 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5700 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5699 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5700))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_5606))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5699) .cse4 v_ArrVal_5605) .cse5 v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_5608) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-12-02 08:46:44,502 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:46:44,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916083318] [2024-12-02 08:46:44,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916083318] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:46:44,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1531342180] [2024-12-02 08:46:44,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:46:44,502 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:46:44,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:46:44,504 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:46:44,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-12-02 08:47:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:04,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-12-02 08:47:04,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:47:04,095 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 [2024-12-02 08:47:04,199 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 08:47:04,199 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 [2024-12-02 08:47:04,204 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 [2024-12-02 08:47:04,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:47:04,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 08:47:04,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-12-02 08:47:04,277 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 9 treesize of output 3 [2024-12-02 08:47:04,775 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:47:04,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:47:04,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:47:04,838 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:47:04,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:47:04,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:47:04,891 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:47:04,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:47:04,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:47:04,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-12-02 08:47:04,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 08:47:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 08:47:04,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:47:04,974 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6187 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6187) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6186 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6187 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6187) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6186) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:47:04,997 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_6186 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6187 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_6187) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_6186) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_6187 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_6187) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd (_ bv12 32) .cse2))))))) is different from false [2024-12-02 08:47:05,040 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6185 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6186 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6187 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6184))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6185) .cse0 v_ArrVal_6187) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_6186) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_6184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6185 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6187 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6185) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6184) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6187) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd (_ bv12 32) .cse3)))))) is different from false [2024-12-02 08:47:05,089 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6185 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6186 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6187 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_6184))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_6185) .cse1 v_ArrVal_6187) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_6186) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_6184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6185 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6187 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_6185) (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_6184) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6187) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-12-02 08:47:06,267 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6185 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6279 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6187 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6278 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6278))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6279) .cse1 v_ArrVal_6185) (select (select (store .cse2 .cse1 v_ArrVal_6184) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_6187))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6185 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6186 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6279 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6187 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6278 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6278))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_6184))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6279) .cse4 v_ArrVal_6185) .cse5 v_ArrVal_6187) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_6186) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-12-02 08:47:06,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1531342180] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:47:06,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:47:06,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-12-02 08:47:06,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785707147] [2024-12-02 08:47:06,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:47:06,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 08:47:06,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:47:06,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 08:47:06,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=150, Unknown=15, NotChecked=288, Total=506 [2024-12-02 08:47:06,275 INFO L87 Difference]: Start difference. First operand 1028 states and 1107 transitions. Second operand has 11 states, 9 states have (on average 9.11111111111111) internal successors, (82), 11 states have internal predecessors, (82), 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) [2024-12-02 08:47:11,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:11,351 INFO L93 Difference]: Finished difference Result 1027 states and 1106 transitions. [2024-12-02 08:47:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 08:47:11,351 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.11111111111111) internal successors, (82), 11 states have internal predecessors, (82), 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 126 [2024-12-02 08:47:11,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:11,353 INFO L225 Difference]: With dead ends: 1027 [2024-12-02 08:47:11,353 INFO L226 Difference]: Without dead ends: 1027 [2024-12-02 08:47:11,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=309, Unknown=15, NotChecked=396, Total=812 [2024-12-02 08:47:11,354 INFO L435 NwaCegarLoop]: 560 mSDtfsCounter, 547 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 2913 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:11,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 2354 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2913 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-12-02 08:47:11,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2024-12-02 08:47:11,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1027. [2024-12-02 08:47:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 706 states have (on average 1.5566572237960339) internal successors, (1099), 1021 states have internal predecessors, (1099), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 08:47:11,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1106 transitions. [2024-12-02 08:47:11,360 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1106 transitions. Word has length 126 [2024-12-02 08:47:11,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:11,361 INFO L471 AbstractCegarLoop]: Abstraction has 1027 states and 1106 transitions. [2024-12-02 08:47:11,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.11111111111111) internal successors, (82), 11 states have internal predecessors, (82), 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) [2024-12-02 08:47:11,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1106 transitions. [2024-12-02 08:47:11,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 08:47:11,361 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:11,361 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:47:11,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-12-02 08:47:11,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-12-02 08:47:11,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:47:11,762 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:47:11,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:11,762 INFO L85 PathProgramCache]: Analyzing trace with hash 942292037, now seen corresponding path program 1 times [2024-12-02 08:47:11,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:47:11,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646266269] [2024-12-02 08:47:11,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:11,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:47:11,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:47:11,764 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:47:11,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-12-02 08:47:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:12,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-02 08:47:12,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:47:12,351 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 [2024-12-02 08:47:12,444 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 08:47:12,445 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 [2024-12-02 08:47:12,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:47:12,841 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:47:12,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:47:12,923 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:47:12,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:47:12,985 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:47:12,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:47:13,053 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:47:13,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:47:13,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-12-02 08:47:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 08:47:13,089 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:47:13,156 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6734 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-12-02 08:47:13,167 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6733 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6733))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6734)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-12-02 08:47:13,175 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6733 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6733))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6734)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:47:13,190 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6733 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6732))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6733)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6734)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:47:13,202 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6733 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6732))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6733)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6734)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:47:13,551 INFO L349 Elim1Store]: treesize reduction 7, result has 93.2 percent of original size [2024-12-02 08:47:13,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 108 [2024-12-02 08:47:13,564 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6780 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6733 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem36#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6780))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6732)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6733)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6734)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-12-02 08:47:13,567 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:47:13,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646266269] [2024-12-02 08:47:13,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646266269] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:47:13,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [907534721] [2024-12-02 08:47:13,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:13,567 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:47:13,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:47:13,568 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:47:13,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2024-12-02 08:47:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:44,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-12-02 08:47:44,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:47:44,150 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 [2024-12-02 08:47:44,264 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-02 08:47:44,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-12-02 08:47:44,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:47:44,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-12-02 08:47:45,229 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:47:45,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:47:45,369 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:47:45,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:47:45,448 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:47:45,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:47:45,546 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:47:45,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:47:45,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-12-02 08:47:45,615 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 08:47:45,615 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:47:45,626 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7236 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7236) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-12-02 08:47:45,632 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7236 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7236) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-12-02 08:47:45,643 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7236 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7235 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7235))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7236)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:47:45,653 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7236 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7235 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7235))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7236)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:47:45,670 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7236 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7234 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7235 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7234))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7235)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7236)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:47:45,683 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7236 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7234 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7235 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7234))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7235)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7236)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2024-12-02 08:47:45,952 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7236 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7234 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7235 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7282))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7234)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7235)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7236)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:47:45,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [907534721] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:47:45,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:47:45,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2024-12-02 08:47:45,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91296146] [2024-12-02 08:47:45,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:47:45,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 08:47:45,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:47:45,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 08:47:45,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=509, Unknown=21, NotChecked=754, Total=1406 [2024-12-02 08:47:45,956 INFO L87 Difference]: Start difference. First operand 1027 states and 1106 transitions. Second operand has 23 states, 20 states have (on average 5.45) internal successors, (109), 22 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 08:47:51,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:47:51,921 INFO L93 Difference]: Finished difference Result 1028 states and 1107 transitions. [2024-12-02 08:47:51,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 08:47:51,921 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 5.45) internal successors, (109), 22 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 129 [2024-12-02 08:47:51,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:47:51,923 INFO L225 Difference]: With dead ends: 1028 [2024-12-02 08:47:51,923 INFO L226 Difference]: Without dead ends: 1028 [2024-12-02 08:47:51,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=644, Unknown=21, NotChecked=832, Total=1640 [2024-12-02 08:47:51,923 INFO L435 NwaCegarLoop]: 558 mSDtfsCounter, 536 mSDsluCounter, 4835 mSDsCounter, 0 mSdLazyCounter, 4105 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 5393 SdHoareTripleChecker+Invalid, 4113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 4105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-12-02 08:47:51,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 5393 Invalid, 4113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 4105 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-12-02 08:47:51,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2024-12-02 08:47:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1026. [2024-12-02 08:47:51,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 706 states have (on average 1.5552407932011332) internal successors, (1098), 1020 states have internal predecessors, (1098), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 08:47:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1105 transitions. [2024-12-02 08:47:51,929 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1105 transitions. Word has length 129 [2024-12-02 08:47:51,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:47:51,929 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1105 transitions. [2024-12-02 08:47:51,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 5.45) internal successors, (109), 22 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 08:47:51,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1105 transitions. [2024-12-02 08:47:51,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 08:47:51,930 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:47:51,930 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:47:51,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-12-02 08:47:52,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2024-12-02 08:47:52,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 08:47:52,330 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:47:52,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:52,331 INFO L85 PathProgramCache]: Analyzing trace with hash 942292038, now seen corresponding path program 1 times [2024-12-02 08:47:52,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:47:52,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187965231] [2024-12-02 08:47:52,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:52,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:47:52,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:47:52,333 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:47:52,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-12-02 08:47:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:52,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-12-02 08:47:52,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:47:52,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-12-02 08:47:53,045 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 [2024-12-02 08:47:53,058 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 08:47:53,058 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 [2024-12-02 08:47:53,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:47:53,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 08:47:53,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-12-02 08:47:53,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 08:47:53,642 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:47:53,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:47:53,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:47:53,728 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:47:53,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:47:53,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:47:53,805 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:47:53,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:47:53,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:47:53,880 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:47:53,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:47:53,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:47:53,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-12-02 08:47:53,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 08:47:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 08:47:53,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:47:54,046 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7785 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7785) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7786) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_7785 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7785) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv20 32) .cse1) (bvadd (_ bv24 32) .cse1)))))) is different from false [2024-12-02 08:47:54,068 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7785 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_7785) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7785 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_7785) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_7786) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-12-02 08:47:54,110 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7784 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7783 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7783))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7784) .cse0 v_ArrVal_7785) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7786) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7784 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7783 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7784) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7783) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7785) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv20 32)) (bvadd .cse3 (_ bv24 32))))))) is different from false [2024-12-02 08:47:54,169 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7784 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7783 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_7784) (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_7783) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7785) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7784 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7783 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_7783))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_7784) .cse3 v_ArrVal_7785) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_7786) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-12-02 08:47:54,244 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7781 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7784 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7783 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7782 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7781))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7782) .cse1 v_ArrVal_7784) (select (select (store .cse2 .cse1 v_ArrVal_7783) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7785))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7781 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7784 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7783 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7782 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7781))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_7783))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7782) .cse4 v_ArrVal_7784) .cse5 v_ArrVal_7785) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_7786) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-12-02 08:47:54,318 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_7781 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7784 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7783 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7782 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_7781))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_7783))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_7782) .cse1 v_ArrVal_7784) .cse2 v_ArrVal_7785) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_7786) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_7781 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7784 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7783 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7782 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_7781))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_7782) .cse7 v_ArrVal_7784) (select (select (store .cse8 .cse7 v_ArrVal_7783) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7785))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse6) (bvadd (_ bv24 32) .cse6))))))) is different from false [2024-12-02 08:47:59,711 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7781 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7878 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7877 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7784 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7783 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7782 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7877))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_7781))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_7783))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7878) .cse0 v_ArrVal_7782) .cse1 v_ArrVal_7784) .cse2 v_ArrVal_7785) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_7786) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_7781 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7878 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7877 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7784 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7783 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7782 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7877))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_7781))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7878) .cse8 v_ArrVal_7782) .cse9 v_ArrVal_7784) (select (select (store .cse10 .cse9 v_ArrVal_7783) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7785))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse7) (bvadd (_ bv24 32) .cse7)))))) is different from false [2024-12-02 08:47:59,750 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:47:59,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187965231] [2024-12-02 08:47:59,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187965231] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:47:59,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2040847220] [2024-12-02 08:47:59,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:59,750 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:47:59,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:47:59,752 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:47:59,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2024-12-02 08:48:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:27,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-12-02 08:48:27,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:48:27,280 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 [2024-12-02 08:48:29,452 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 [2024-12-02 08:48:29,661 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 08:48:29,661 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 [2024-12-02 08:48:29,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 08:48:29,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:48:30,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-12-02 08:48:30,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 08:48:38,369 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:48:38,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:48:38,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:48:39,175 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:48:39,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:48:39,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:48:39,864 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:48:39,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:48:39,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:48:40,558 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:48:40,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-12-02 08:48:40,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:48:40,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-12-02 08:48:40,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 08:48:41,008 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 08:48:41,009 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:48:41,418 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8381 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8381) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8382 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8381 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8381) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8382) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:48:41,566 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8381 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_8381) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8382 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8381 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_8381) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_8382) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-12-02 08:48:41,843 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8381 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8380 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8379 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8380) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8379) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8381) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8382 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8381 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8380 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8379 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8379))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8380) .cse2 v_ArrVal_8381) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_8382) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-12-02 08:48:42,060 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8381 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8380 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8379 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_8380) (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_8379) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8381) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8382 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8381 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8380 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8379 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_8379))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_8380) .cse3 v_ArrVal_8381) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_8382) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-12-02 08:48:42,436 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8382 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8381 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8380 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8379 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8378 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8377 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8377))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8379))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8378) .cse0 v_ArrVal_8380) .cse1 v_ArrVal_8381) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8382) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8381 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8380 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8379 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8378 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8377 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8377))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8378) .cse6 v_ArrVal_8380) (select (select (store .cse7 .cse6 v_ArrVal_8379) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8381))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse5) (bvadd (_ bv24 32) .cse5)))))) is different from false [2024-12-02 08:48:42,787 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_8382 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8381 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8380 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8379 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8378 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8377 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_8377))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_8379))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_8378) .cse1 v_ArrVal_8380) .cse2 v_ArrVal_8381) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_8382) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_8381 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8380 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8379 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8378 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8377 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_8377))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_8378) .cse7 v_ArrVal_8380) (select (select (store .cse8 .cse7 v_ArrVal_8379) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8381))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse6) (bvadd (_ bv24 32) .cse6))))))) is different from false [2024-12-02 08:48:52,545 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8474 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8473 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8381 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8380 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8379 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8378 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8377 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8474))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_8377))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8473) .cse1 v_ArrVal_8378) .cse2 v_ArrVal_8380) (select (select (store .cse3 .cse2 v_ArrVal_8379) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_8381))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8474 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8473 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8382 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8381 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8380 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8379 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8378 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8377 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8474))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_8377))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_8379))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8473) .cse6 v_ArrVal_8378) .cse7 v_ArrVal_8380) .cse8 v_ArrVal_8381) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_8382) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-12-02 08:48:52,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2040847220] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:48:52,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:48:52,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2024-12-02 08:48:52,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632193172] [2024-12-02 08:48:52,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:48:52,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 08:48:52,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:48:52,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 08:48:52,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=160, Unknown=14, NotChecked=518, Total=756 [2024-12-02 08:48:52,585 INFO L87 Difference]: Start difference. First operand 1026 states and 1105 transitions. Second operand has 12 states, 10 states have (on average 8.5) internal successors, (85), 12 states have internal predecessors, (85), 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) [2024-12-02 08:50:20,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:50:20,553 INFO L93 Difference]: Finished difference Result 1025 states and 1104 transitions. [2024-12-02 08:50:20,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 08:50:20,554 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.5) internal successors, (85), 12 states have internal predecessors, (85), 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 129 [2024-12-02 08:50:20,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:50:20,556 INFO L225 Difference]: With dead ends: 1025 [2024-12-02 08:50:20,556 INFO L226 Difference]: Without dead ends: 1025 [2024-12-02 08:50:20,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 253 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=14, NotChecked=714, Total=1190 [2024-12-02 08:50:20,556 INFO L435 NwaCegarLoop]: 559 mSDtfsCounter, 545 mSDsluCounter, 2452 mSDsCounter, 0 mSdLazyCounter, 3901 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 3907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.9s IncrementalHoareTripleChecker+Time [2024-12-02 08:50:20,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 3011 Invalid, 3907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 3901 Invalid, 0 Unknown, 0 Unchecked, 84.9s Time] [2024-12-02 08:50:20,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2024-12-02 08:50:20,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1025. [2024-12-02 08:50:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 706 states have (on average 1.5538243626062322) internal successors, (1097), 1019 states have internal predecessors, (1097), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 08:50:20,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1104 transitions. [2024-12-02 08:50:20,565 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1104 transitions. Word has length 129 [2024-12-02 08:50:20,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:50:20,565 INFO L471 AbstractCegarLoop]: Abstraction has 1025 states and 1104 transitions. [2024-12-02 08:50:20,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.5) internal successors, (85), 12 states have internal predecessors, (85), 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) [2024-12-02 08:50:20,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1104 transitions. [2024-12-02 08:50:20,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-12-02 08:50:20,566 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:50:20,566 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:50:20,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-12-02 08:50:20,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2024-12-02 08:50:20,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 08:50:20,967 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:50:20,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:50:20,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1696214023, now seen corresponding path program 1 times [2024-12-02 08:50:20,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:50:20,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761318780] [2024-12-02 08:50:20,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:50:20,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:50:20,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:50:20,969 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:50:20,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-12-02 08:50:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:50:21,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-12-02 08:50:21,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:50:24,027 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 08:50:24,027 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 [2024-12-02 08:50:24,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:50:29,078 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:50:29,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-12-02 08:50:29,865 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:50:29,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-12-02 08:50:30,661 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:50:30,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:50:32,129 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:50:32,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:50:33,373 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:50:33,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:50:33,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-12-02 08:50:34,601 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-12-02 08:50:34,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-12-02 08:50:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 08:50:34,649 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:50:36,044 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8946 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8946) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-12-02 08:50:36,144 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8946 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8946) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-12-02 08:50:36,290 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8946 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8945 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8945))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8946)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:50:36,392 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8946 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8945 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8945))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8946)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:50:36,673 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2024-12-02 08:50:36,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 60 [2024-12-02 08:50:36,759 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8946 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8945 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8944 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem39#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8944))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8945)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8946)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-12-02 08:50:36,867 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8946 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8945 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8944 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#0.base| .cse3 v_ArrVal_8944))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8945)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8946)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3)))) is different from false [2024-12-02 08:50:37,031 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8946 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8945 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8944 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8943 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8943)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (let ((.cse2 (store .cse3 .cse4 v_ArrVal_8944))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8945)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8946)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse4)))) is different from false [2024-12-02 08:50:37,148 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8946 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8945 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8944 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8943 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8943))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (let ((.cse2 (store .cse3 .cse4 v_ArrVal_8944))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8945)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8946)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse4))))) is different from false [2024-12-02 08:50:40,015 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8946 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8945 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8944 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8943 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8993 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8993))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8943)))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8944))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8945)))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8946)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-12-02 08:50:40,037 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:50:40,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761318780] [2024-12-02 08:50:40,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761318780] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:50:40,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [811240223] [2024-12-02 08:50:40,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:50:40,037 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:50:40,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:50:40,039 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:50:40,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2024-12-02 08:50:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:50:45,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-12-02 08:50:45,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:50:45,270 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 [2024-12-02 08:50:48,291 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-02 08:50:48,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-12-02 08:50:49,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:50:51,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-12-02 08:51:06,270 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:51:06,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:51:08,363 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:51:08,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:51:09,875 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:51:09,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:51:11,355 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:51:11,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:51:12,917 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:51:12,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 08:51:13,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-12-02 08:51:14,859 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2024-12-02 08:51:14,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2024-12-02 08:51:14,989 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 08:51:14,989 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:51:15,950 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9467 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9467) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-12-02 08:51:16,059 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9467 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_9467) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-12-02 08:51:16,216 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9467 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9466 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_9466))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9467)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:51:16,327 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9467 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9466 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9466))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9467)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:51:16,491 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9467 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9466 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9465 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_9465))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9466)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9467)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-12-02 08:51:16,603 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9467 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9466 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9465 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9465))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9466)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9467)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:51:16,783 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9464 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9467 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9466 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9465 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9464))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9465)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9466)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9467)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:51:16,916 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9464 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9467 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9466 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9465 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9464))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9465)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9466)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9467)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-12-02 08:51:20,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [811240223] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:51:20,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:51:20,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-12-02 08:51:20,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539138233] [2024-12-02 08:51:20,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:51:20,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 08:51:20,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:51:20,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 08:51:20,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=610, Unknown=17, NotChecked=1122, Total=1892 [2024-12-02 08:51:20,560 INFO L87 Difference]: Start difference. First operand 1025 states and 1104 transitions. Second operand has 25 states, 22 states have (on average 5.5) internal successors, (121), 24 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 08:52:26,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:52:26,618 INFO L93 Difference]: Finished difference Result 1026 states and 1105 transitions. [2024-12-02 08:52:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 08:52:26,619 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 5.5) internal successors, (121), 24 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 133 [2024-12-02 08:52:26,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:52:26,621 INFO L225 Difference]: With dead ends: 1026 [2024-12-02 08:52:26,621 INFO L226 Difference]: Without dead ends: 1026 [2024-12-02 08:52:26,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 253 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 17 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=152, Invalid=655, Unknown=17, NotChecked=1156, Total=1980 [2024-12-02 08:52:26,622 INFO L435 NwaCegarLoop]: 559 mSDtfsCounter, 530 mSDsluCounter, 3025 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:52:26,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 3584 Invalid, 2609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2598 Invalid, 0 Unknown, 0 Unchecked, 65.4s Time] [2024-12-02 08:52:26,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2024-12-02 08:52:26,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1024. [2024-12-02 08:52:26,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 706 states have (on average 1.5524079320113315) internal successors, (1096), 1018 states have internal predecessors, (1096), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 08:52:26,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1103 transitions. [2024-12-02 08:52:26,630 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1103 transitions. Word has length 133 [2024-12-02 08:52:26,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:52:26,631 INFO L471 AbstractCegarLoop]: Abstraction has 1024 states and 1103 transitions. [2024-12-02 08:52:26,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 5.5) internal successors, (121), 24 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 08:52:26,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1103 transitions. [2024-12-02 08:52:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-12-02 08:52:26,631 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:52:26,631 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:52:26,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2024-12-02 08:52:26,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-12-02 08:52:27,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:52:27,032 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr97REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-12-02 08:52:27,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:52:27,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1696214024, now seen corresponding path program 1 times [2024-12-02 08:52:27,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:52:27,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220046570] [2024-12-02 08:52:27,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:52:27,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:52:27,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:52:27,034 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:52:27,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-12-02 08:52:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:52:27,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-12-02 08:52:27,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:52:30,164 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 [2024-12-02 08:52:30,416 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 08:52:30,416 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 [2024-12-02 08:52:30,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:52:30,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 08:52:32,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-12-02 08:52:32,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 08:52:45,408 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:52:45,408 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 75 treesize of output 68 [2024-12-02 08:52:45,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:52:47,559 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:52:47,560 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 75 treesize of output 68 [2024-12-02 08:52:47,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:52:49,274 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:52:49,274 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 75 treesize of output 68 [2024-12-02 08:52:49,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:52:50,969 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:52:50,970 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 75 treesize of output 68 [2024-12-02 08:52:51,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:52:52,856 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:52:52,857 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 75 treesize of output 68 [2024-12-02 08:52:52,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:52:53,456 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 44 treesize of output 20 [2024-12-02 08:52:53,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 08:52:54,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:52:54,661 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2024-12-02 08:52:54,661 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 21 [2024-12-02 08:52:54,941 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 08:52:54,941 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 [2024-12-02 08:52:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 08:52:55,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:53:04,160 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10036 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10035 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (or (forall ((v_ArrVal_10037 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_10035) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc43#1.base_8| v_ArrVal_10037) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_10036) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|))))) (or (forall ((v_ArrVal_10035 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_10035) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))) (forall ((|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|))))))) is different from false [2024-12-02 08:53:04,504 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (or (forall ((v_ArrVal_10035 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_10035) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|))))) (forall ((v_ArrVal_10036 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10035 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (or (forall ((v_ArrVal_10037 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#0.offset| .cse1 v_ArrVal_10035) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc43#1.base_8| v_ArrVal_10037) (select (select (store |c_#memory_$Pointer$#0.base| .cse1 v_ArrVal_10036) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|)))))))) is different from false [2024-12-02 08:53:05,038 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (or (forall ((|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|)))) (forall ((v_ArrVal_10033 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10034 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10035 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_10034) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_10033) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10035) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) (forall ((v_ArrVal_10033 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10036 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10034 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10035 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (or (forall ((v_ArrVal_10037 (_ BitVec 32))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_10033))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_10034) .cse2 v_ArrVal_10035) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc43#1.base_8| v_ArrVal_10037) (select (select (store .cse3 .cse2 v_ArrVal_10036) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|))))))) is different from false [2024-12-02 08:53:05,359 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_10033 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10036 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10034 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10035 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (or (forall ((v_ArrVal_10037 (_ BitVec 32))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_10033))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_10034) .cse1 v_ArrVal_10035) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc43#1.base_8| v_ArrVal_10037) (select (select (store .cse3 .cse1 v_ArrVal_10036) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|))))) (or (forall ((v_ArrVal_10033 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10034 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10035 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_10034) (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_10033) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_10035) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule .cse4 (bvadd (_ bv4 32) .cse4)))) (forall ((|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|)))))))) is different from false [2024-12-02 08:53:05,910 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (or (forall ((|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|)))) (forall ((v_ArrVal_10032 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10033 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10031 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10034 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10035 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_10032))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_10031) .cse1 v_ArrVal_10034) (select (select (store .cse2 .cse1 v_ArrVal_10033) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_10035))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) (forall ((v_ArrVal_10032 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10033 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10031 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10036 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10034 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10035 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (or (forall ((v_ArrVal_10037 (_ BitVec 32))) (let ((.cse7 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_10032))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_10033))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv4 32) (select (select (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_10031) .cse4 v_ArrVal_10034) .cse5 v_ArrVal_10035) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc43#1.base_8| v_ArrVal_10037) (select (select (store .cse6 .cse5 v_ArrVal_10036) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|))))))) is different from false [2024-12-02 08:53:08,587 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (or (forall ((v_ArrVal_10032 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10033 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10031 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10034 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10035 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10029 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_10029))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_10032))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_10030) .cse1 v_ArrVal_10031) .cse2 v_ArrVal_10034) (select (select (store .cse3 .cse2 v_ArrVal_10033) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_10035))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|))))) (forall ((v_ArrVal_10032 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10033 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10031 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10036 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10034 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10035 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10029 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (or (forall ((v_ArrVal_10037 (_ BitVec 32))) (let ((.cse11 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_10029))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_10032))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_10033))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv4 32) (select (select (store (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_10030) .cse6 v_ArrVal_10031) .cse7 v_ArrVal_10034) .cse8 v_ArrVal_10035) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc43#1.base_8| v_ArrVal_10037) (select (select (store .cse9 .cse8 v_ArrVal_10036) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|))))))) is different from false [2024-12-02 08:53:26,598 WARN L286 SmtUtils]: Spent 5.40s on a formula simplification that was a NOOP. DAG size: 362 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-12-02 08:53:27,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:53:27,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 795 treesize of output 819 [2024-12-02 08:53:35,078 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10032 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10033 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10031 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10036 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10034 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10035 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10128 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10029 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10129 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32)) (v_ArrVal_10037 (_ BitVec 32))) (or (= |v_ULTIMATE.start_main_#t~malloc43#1.base_8| |c_ULTIMATE.start_main_#t~mem36#1.base|) (let ((.cse8 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_10128))) (let ((.cse0 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse0 v_ArrVal_10029))) (let ((.cse1 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse6 (store .cse7 .cse1 v_ArrVal_10032))) (let ((.cse2 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse5 (store .cse6 .cse2 v_ArrVal_10033))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_10129) .cse0 v_ArrVal_10030) .cse1 v_ArrVal_10031) .cse2 v_ArrVal_10034) .cse3 v_ArrVal_10035) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv4 32)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc43#1.base_8| v_ArrVal_10037) (select (select (store .cse5 .cse3 v_ArrVal_10036) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))))) (forall ((v_prenex_39 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_37 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_38 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_35 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_36 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_33 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_34 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_32 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_40 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (select (select (let ((.cse15 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_prenex_38))) (let ((.cse10 (select (select .cse15 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse14 (store .cse15 .cse10 v_prenex_39))) (let ((.cse11 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse13 (store .cse14 .cse11 v_prenex_32))) (let ((.cse12 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_prenex_40) .cse10 v_prenex_34) .cse11 v_prenex_35) .cse12 v_prenex_36) (select (select (store .cse13 .cse12 v_prenex_33) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_prenex_37))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule .cse9 (bvadd .cse9 (_ bv4 32))))))) is different from false [2024-12-02 08:53:35,163 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:53:35,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220046570] [2024-12-02 08:53:35,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220046570] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:53:35,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [554963524] [2024-12-02 08:53:35,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:53:35,163 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:53:35,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:53:35,166 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:53:35,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2024-12-02 08:53:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:53:43,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-12-02 08:53:43,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:53:43,147 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 [2024-12-02 08:53:49,489 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 [2024-12-02 08:53:50,775 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-02 08:53:50,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-12-02 08:53:53,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 08:53:53,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 08:54:01,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 17 [2024-12-02 08:54:01,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 08:54:40,859 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:54:40,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 68 [2024-12-02 08:54:40,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:54:47,023 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:54:47,023 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 75 treesize of output 68 [2024-12-02 08:54:47,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:54:51,477 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:54:51,478 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 75 treesize of output 68 [2024-12-02 08:54:51,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:54:55,917 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:54:55,917 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 75 treesize of output 68 [2024-12-02 08:54:56,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:55:00,435 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 08:55:00,435 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 75 treesize of output 68 [2024-12-02 08:55:00,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:55:01,576 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 44 treesize of output 20 [2024-12-02 08:55:01,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-12-02 08:55:04,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:55:04,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2024-12-02 08:55:05,321 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2024-12-02 08:55:05,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-12-02 08:55:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 08:55:05,429 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:55:18,885 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10652 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10653 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|))) (forall ((v_ArrVal_10037 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_10652) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc43#1.base_8| v_ArrVal_10037) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_10653) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) (or (forall ((v_ArrVal_10652 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_10652) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))) (forall ((|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|))))))) is different from false [2024-12-02 08:55:19,700 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_10652 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10653 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|))) (forall ((v_ArrVal_10037 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_10652) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc43#1.base_8| v_ArrVal_10037) (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_10653) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (or (forall ((|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|)))) (forall ((v_ArrVal_10652 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_10652) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule .cse2 (bvadd (_ bv4 32) .cse2)))))))) is different from false [2024-12-02 08:55:21,659 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (or (forall ((v_ArrVal_10652 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10650 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10651 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_10651) (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_10650) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10652) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|))))) (forall ((v_ArrVal_10652 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10653 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10650 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10651 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc43#1.base_8| (_ BitVec 32))) (or (forall ((v_ArrVal_10037 (_ BitVec 32))) (let ((.cse3 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_10650))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) (select (select (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_10651) .cse2 v_ArrVal_10652) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc43#1.base_8| v_ArrVal_10037) (select (select (store .cse3 .cse2 v_ArrVal_10653) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc43#1.base_8|))))))) is different from false [2024-12-02 08:55:35,155 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-12-02 08:55:35,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-12-02 08:55:35,156 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-12-02 08:55:35,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (45)] Ended with exit code 0 [2024-12-02 08:55:35,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-12-02 08:55:35,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:55:35,557 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:86) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:947) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:555) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 47 more [2024-12-02 08:55:35,560 INFO L158 Benchmark]: Toolchain (without parser) took 798187.92ms. Allocated memory was 92.3MB in the beginning and 268.4MB in the end (delta: 176.2MB). Free memory was 67.8MB in the beginning and 157.1MB in the end (delta: -89.3MB). Peak memory consumption was 84.4MB. Max. memory is 16.1GB. [2024-12-02 08:55:35,560 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 83.9MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:55:35,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 658.09ms. Allocated memory is still 92.3MB. Free memory was 67.5MB in the beginning and 50.7MB in the end (delta: 16.9MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2024-12-02 08:55:35,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.04ms. Allocated memory is still 92.3MB. Free memory was 50.7MB in the beginning and 44.1MB in the end (delta: 6.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:55:35,560 INFO L158 Benchmark]: Boogie Preprocessor took 144.40ms. Allocated memory is still 92.3MB. Free memory was 44.1MB in the beginning and 57.4MB in the end (delta: -13.3MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2024-12-02 08:55:35,561 INFO L158 Benchmark]: RCFGBuilder took 3951.28ms. Allocated memory was 92.3MB in the beginning and 142.6MB in the end (delta: 50.3MB). Free memory was 57.4MB in the beginning and 61.7MB in the end (delta: -4.3MB). Peak memory consumption was 89.4MB. Max. memory is 16.1GB. [2024-12-02 08:55:35,561 INFO L158 Benchmark]: TraceAbstraction took 793359.95ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 61.7MB in the beginning and 157.1MB in the end (delta: -95.3MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2024-12-02 08:55:35,561 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 83.9MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 658.09ms. Allocated memory is still 92.3MB. Free memory was 67.5MB in the beginning and 50.7MB in the end (delta: 16.9MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.04ms. Allocated memory is still 92.3MB. Free memory was 50.7MB in the beginning and 44.1MB in the end (delta: 6.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 144.40ms. Allocated memory is still 92.3MB. Free memory was 44.1MB in the beginning and 57.4MB in the end (delta: -13.3MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * RCFGBuilder took 3951.28ms. Allocated memory was 92.3MB in the beginning and 142.6MB in the end (delta: 50.3MB). Free memory was 57.4MB in the beginning and 61.7MB in the end (delta: -4.3MB). Peak memory consumption was 89.4MB. Max. memory is 16.1GB. * TraceAbstraction took 793359.95ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 61.7MB in the beginning and 157.1MB in the end (delta: -95.3MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451dfd26-ffbf-432b-8785-b7667b95125d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")