./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd --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 be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:47:53,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:47:53,142 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 15:47:53,148 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:47:53,149 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:47:53,193 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:47:53,195 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:47:53,195 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:47:53,196 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:47:53,196 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:47:53,196 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:47:53,196 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:47:53,197 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:47:53,197 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:47:53,197 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:47:53,197 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:47:53,198 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:47:53,198 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:47:53,198 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:47:53,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:47:53,198 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:47:53,198 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:47:53,198 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:47:53,199 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:47:53,199 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:47:53,199 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:47:53,199 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:47:53,199 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:47:53,199 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:47:53,199 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:47:53,200 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:47:53,200 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:47:53,200 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:47:53,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:47:53,200 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:47:53,200 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:47:53,202 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:47:53,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:47:53,202 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:47:53,203 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:47:53,203 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:47:53,203 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:47:53,203 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_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd 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 -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2024-11-13 15:47:53,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:47:53,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:47:53,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:47:53,620 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:47:53,620 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:47:53,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-2.i Unable to find full path for "g++" [2024-11-13 15:47:56,170 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:47:56,597 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:47:56,598 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-2.i [2024-11-13 15:47:56,621 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/data/a2408fd74/111211192f4e497199e0789aa4c1364e/FLAG3ce097ca7 [2024-11-13 15:47:56,642 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/data/a2408fd74/111211192f4e497199e0789aa4c1364e [2024-11-13 15:47:56,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:47:56,647 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:47:56,649 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:47:56,649 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:47:56,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:47:56,656 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:47:56" (1/1) ... [2024-11-13 15:47:56,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b1d663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:47:56, skipping insertion in model container [2024-11-13 15:47:56,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:47:56" (1/1) ... [2024-11-13 15:47:56,724 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:47:57,436 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,512 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,524 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,534 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,544 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,592 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,593 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,597 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,597 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,602 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,606 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,609 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,610 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,619 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,621 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,627 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,629 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,631 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,632 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,639 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:47:57,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:47:57,674 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) [2024-11-13 15:47:57,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6a9353a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:47:57, skipping insertion in model container [2024-11-13 15:47:57,676 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:47:57,676 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-13 15:47:57,679 INFO L158 Benchmark]: Toolchain (without parser) took 1031.19ms. Allocated memory is still 109.1MB. Free memory was 81.5MB in the beginning and 61.3MB in the end (delta: 20.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 15:47:57,680 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 83.9MB. Free memory is still 41.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:47:57,680 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1027.76ms. Allocated memory is still 109.1MB. Free memory was 81.5MB in the beginning and 61.3MB in the end (delta: 20.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 15:47:57,682 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 83.9MB. Free memory is still 41.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1027.76ms. Allocated memory is still 109.1MB. Free memory was 81.5MB in the beginning and 61.3MB in the end (delta: 20.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 750]: 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_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd --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 be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:48:01,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:48:01,184 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-13 15:48:01,194 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:48:01,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:48:01,270 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:48:01,271 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:48:01,272 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:48:01,272 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:48:01,273 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:48:01,274 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:48:01,274 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:48:01,275 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:48:01,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:48:01,275 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:48:01,275 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:48:01,276 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:48:01,277 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:48:01,277 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:48:01,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:48:01,277 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:48:01,277 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:48:01,277 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:48:01,278 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:48:01,278 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:48:01,278 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 15:48:01,278 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:48:01,278 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 15:48:01,278 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:48:01,278 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:48:01,279 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:48:01,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:48:01,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:48:01,279 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:48:01,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:48:01,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:48:01,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:48:01,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:48:01,281 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 15:48:01,282 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 15:48:01,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:48:01,282 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:48:01,282 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:48:01,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:48:01,282 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_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd 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 -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2024-11-13 15:48:01,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:48:01,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:48:01,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:48:01,694 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:48:01,695 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:48:01,696 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-2.i Unable to find full path for "g++" [2024-11-13 15:48:04,330 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:48:04,919 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:48:04,920 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test3-2.i [2024-11-13 15:48:04,940 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/data/55586ee2e/51c5655d5f5f486f948fb38ad7935c15/FLAG28f46168c [2024-11-13 15:48:04,972 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/data/55586ee2e/51c5655d5f5f486f948fb38ad7935c15 [2024-11-13 15:48:04,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:48:04,980 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:48:04,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:48:04,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:48:04,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:48:04,992 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:48:04" (1/1) ... [2024-11-13 15:48:04,994 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b9cec8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:48:04, skipping insertion in model container [2024-11-13 15:48:04,997 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:48:04" (1/1) ... [2024-11-13 15:48:05,068 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:48:05,687 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,734 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,740 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,748 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,760 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,816 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,816 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,821 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,822 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,826 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,829 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,830 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,832 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,840 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,842 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,846 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,848 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,849 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,850 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,857 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:05,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:48:05,885 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-13 15:48:05,905 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:48:05,984 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,031 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,038 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,046 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,061 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,092 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,092 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,096 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,096 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,100 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,101 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,103 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,103 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,109 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,111 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,113 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,115 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,116 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,117 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,122 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:48:06,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:48:06,132 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:48:06,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:48:06,391 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:48:06,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:48:06 WrapperNode [2024-11-13 15:48:06,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:48:06,393 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:48:06,393 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:48:06,393 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:48:06,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:48:06" (1/1) ... [2024-11-13 15:48:06,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:48:06" (1/1) ... [2024-11-13 15:48:06,545 INFO L138 Inliner]: procedures = 180, calls = 325, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1177 [2024-11-13 15:48:06,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:48:06,546 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:48:06,546 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:48:06,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:48:06,559 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:48:06" (1/1) ... [2024-11-13 15:48:06,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:48:06" (1/1) ... [2024-11-13 15:48:06,574 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:48:06" (1/1) ... [2024-11-13 15:48:06,747 INFO L175 MemorySlicer]: Split 302 memory accesses to 3 slices as follows [2, 266, 34]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 58, 4]. [2024-11-13 15:48:06,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:48:06" (1/1) ... [2024-11-13 15:48:06,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:48:06" (1/1) ... [2024-11-13 15:48:06,804 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:48:06" (1/1) ... [2024-11-13 15:48:06,817 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:48:06" (1/1) ... [2024-11-13 15:48:06,822 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:48:06" (1/1) ... [2024-11-13 15:48:06,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:48:06" (1/1) ... [2024-11-13 15:48:06,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:48:06,840 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:48:06,840 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:48:06,840 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:48:06,841 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:48:06" (1/1) ... [2024-11-13 15:48:06,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:48:06,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:48:06,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:48:06,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:48:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-13 15:48:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-13 15:48:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-13 15:48:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 15:48:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 15:48:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-13 15:48:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 15:48:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 15:48:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-13 15:48:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-13 15:48:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-13 15:48:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-13 15:48:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-13 15:48:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-13 15:48:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:48:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:48:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 15:48:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 15:48:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 15:48:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:48:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 15:48:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 15:48:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 15:48:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 15:48:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-13 15:48:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-13 15:48:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:48:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 15:48:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 15:48:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-13 15:48:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:48:06,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:48:07,281 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:48:07,283 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:48:07,286 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 15:48:07,366 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 15:48:07,405 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 15:48:14,173 INFO L? ?]: Removed 1300 outVars from TransFormulas that were not future-live. [2024-11-13 15:48:14,175 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:48:14,238 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:48:14,239 INFO L316 CfgBuilder]: Removed 72 assume(true) statements. [2024-11-13 15:48:14,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:48:14 BoogieIcfgContainer [2024-11-13 15:48:14,239 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:48:14,247 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:48:14,247 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:48:14,253 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:48:14,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:48:04" (1/3) ... [2024-11-13 15:48:14,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e95e4ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:48:14, skipping insertion in model container [2024-11-13 15:48:14,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:48:06" (2/3) ... [2024-11-13 15:48:14,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e95e4ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:48:14, skipping insertion in model container [2024-11-13 15:48:14,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:48:14" (3/3) ... [2024-11-13 15:48:14,256 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test3-2.i [2024-11-13 15:48:14,274 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:48:14,276 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_nondet_test3-2.i that has 5 procedures, 1269 locations, 1 initial locations, 43 loop locations, and 630 error locations. [2024-11-13 15:48:14,370 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:48:14,386 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;@729e79ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:48:14,386 INFO L334 AbstractCegarLoop]: Starting to check reachability of 630 error locations. [2024-11-13 15:48:14,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 1259 states, 624 states have (on average 2.2371794871794872) internal successors, (1396), 1252 states have internal predecessors, (1396), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:48:14,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-13 15:48:14,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:48:14,402 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-13 15:48:14,402 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr628ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:48:14,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:48:14,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1758670, now seen corresponding path program 1 times [2024-11-13 15:48:14,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:48:14,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407979528] [2024-11-13 15:48:14,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:48:14,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:14,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:48:14,423 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:48:14,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:48:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:48:14,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:48:14,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:48:14,796 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 [2024-11-13 15:48:14,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:48:14,805 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:48:14,806 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:48:14,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407979528] [2024-11-13 15:48:14,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407979528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:48:14,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:48:14,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:48:14,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804305193] [2024-11-13 15:48:14,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:48:14,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:48:14,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:48:14,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:48:14,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-13 15:48:14,861 INFO L87 Difference]: Start difference. First operand has 1259 states, 624 states have (on average 2.2371794871794872) internal successors, (1396), 1252 states have internal predecessors, (1396), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2024-11-13 15:48:19,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:48:19,315 INFO L93 Difference]: Finished difference Result 1831 states and 1955 transitions. [2024-11-13 15:48:19,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:48:19,317 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 [2024-11-13 15:48:19,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:48:19,338 INFO L225 Difference]: With dead ends: 1831 [2024-11-13 15:48:19,338 INFO L226 Difference]: Without dead ends: 1828 [2024-11-13 15:48:19,340 INFO L431 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 [2024-11-13 15:48:19,343 INFO L432 NwaCegarLoop]: 1039 mSDtfsCounter, 616 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 2902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1956 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:48:19,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 1716 Invalid, 2902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 946 Invalid, 0 Unknown, 1956 Unchecked, 4.3s Time] [2024-11-13 15:48:19,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2024-11-13 15:48:19,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1247. [2024-11-13 15:48:19,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 618 states have (on average 2.1116504854368934) internal successors, (1305), 1240 states have internal predecessors, (1305), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:48:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1315 transitions. [2024-11-13 15:48:19,501 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1315 transitions. Word has length 4 [2024-11-13 15:48:19,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:48:19,503 INFO L471 AbstractCegarLoop]: Abstraction has 1247 states and 1315 transitions. [2024-11-13 15:48:19,505 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) [2024-11-13 15:48:19,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1315 transitions. [2024-11-13 15:48:19,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-13 15:48:19,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:48:19,506 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-13 15:48:19,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:48:19,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:19,707 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:48:19,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:48:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1756837, now seen corresponding path program 1 times [2024-11-13 15:48:19,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:48:19,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831789643] [2024-11-13 15:48:19,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:48:19,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:19,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:48:19,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:48:19,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:48:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:48:19,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:48:19,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:48:19,934 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 [2024-11-13 15:48:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:48:19,949 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:48:19,950 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:48:19,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831789643] [2024-11-13 15:48:19,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831789643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:48:19,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:48:19,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:48:19,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896723449] [2024-11-13 15:48:19,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:48:19,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:48:19,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:48:19,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:48:19,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:48:19,953 INFO L87 Difference]: Start difference. First operand 1247 states and 1315 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) [2024-11-13 15:48:22,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:48:22,747 INFO L93 Difference]: Finished difference Result 1433 states and 1512 transitions. [2024-11-13 15:48:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:48:22,749 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 [2024-11-13 15:48:22,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:48:22,757 INFO L225 Difference]: With dead ends: 1433 [2024-11-13 15:48:22,757 INFO L226 Difference]: Without dead ends: 1433 [2024-11-13 15:48:22,757 INFO L431 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 [2024-11-13 15:48:22,758 INFO L432 NwaCegarLoop]: 753 mSDtfsCounter, 1157 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:48:22,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 917 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 15:48:22,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2024-11-13 15:48:22,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1246. [2024-11-13 15:48:22,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 627 states have (on average 2.082934609250399) internal successors, (1306), 1238 states have internal predecessors, (1306), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 15:48:22,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1316 transitions. [2024-11-13 15:48:22,807 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1316 transitions. Word has length 4 [2024-11-13 15:48:22,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:48:22,807 INFO L471 AbstractCegarLoop]: Abstraction has 1246 states and 1316 transitions. [2024-11-13 15:48:22,808 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) [2024-11-13 15:48:22,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1316 transitions. [2024-11-13 15:48:22,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-13 15:48:22,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:48:22,809 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-13 15:48:22,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:48:23,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:23,015 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:48:23,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:48:23,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1756838, now seen corresponding path program 1 times [2024-11-13 15:48:23,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:48:23,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053016189] [2024-11-13 15:48:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:48:23,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:23,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:48:23,026 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:48:23,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:48:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:48:23,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:48:23,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:48:23,253 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 [2024-11-13 15:48:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:48:23,298 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:48:23,298 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:48:23,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053016189] [2024-11-13 15:48:23,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053016189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:48:23,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:48:23,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:48:23,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101593259] [2024-11-13 15:48:23,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:48:23,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:48:23,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:48:23,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:48:23,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:48:23,300 INFO L87 Difference]: Start difference. First operand 1246 states and 1316 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) [2024-11-13 15:48:28,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:48:28,210 INFO L93 Difference]: Finished difference Result 1851 states and 1966 transitions. [2024-11-13 15:48:28,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:48:28,210 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 [2024-11-13 15:48:28,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:48:28,219 INFO L225 Difference]: With dead ends: 1851 [2024-11-13 15:48:28,220 INFO L226 Difference]: Without dead ends: 1851 [2024-11-13 15:48:28,220 INFO L431 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 [2024-11-13 15:48:28,221 INFO L432 NwaCegarLoop]: 1018 mSDtfsCounter, 644 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:48:28,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 1709 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-13 15:48:28,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2024-11-13 15:48:28,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1456. [2024-11-13 15:48:28,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 837 states have (on average 2.065710872162485) internal successors, (1729), 1447 states have internal predecessors, (1729), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:48:28,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1741 transitions. [2024-11-13 15:48:28,270 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1741 transitions. Word has length 4 [2024-11-13 15:48:28,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:48:28,271 INFO L471 AbstractCegarLoop]: Abstraction has 1456 states and 1741 transitions. [2024-11-13 15:48:28,271 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) [2024-11-13 15:48:28,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1741 transitions. [2024-11-13 15:48:28,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 15:48:28,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:48:28,272 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:48:28,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:48:28,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:28,476 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:48:28,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:48:28,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1021429073, now seen corresponding path program 1 times [2024-11-13 15:48:28,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:48:28,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1786195541] [2024-11-13 15:48:28,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:48:28,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:28,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:48:28,481 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:48:28,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:48:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:48:28,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:48:28,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:48:28,688 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 [2024-11-13 15:48:28,803 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-13 15:48:28,804 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 [2024-11-13 15:48:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:48:28,929 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:48:28,930 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:48:28,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786195541] [2024-11-13 15:48:28,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786195541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:48:28,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:48:28,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:48:28,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144676321] [2024-11-13 15:48:28,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:48:28,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:48:28,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:48:28,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:48:28,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:48:28,932 INFO L87 Difference]: Start difference. First operand 1456 states and 1741 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:48:37,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:48:37,070 INFO L93 Difference]: Finished difference Result 2742 states and 2918 transitions. [2024-11-13 15:48:37,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:48:37,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-13 15:48:37,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:48:37,080 INFO L225 Difference]: With dead ends: 2742 [2024-11-13 15:48:37,080 INFO L226 Difference]: Without dead ends: 2742 [2024-11-13 15:48:37,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:48:37,081 INFO L432 NwaCegarLoop]: 1246 mSDtfsCounter, 1583 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:48:37,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 2625 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-11-13 15:48:37,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2024-11-13 15:48:37,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 1604. [2024-11-13 15:48:37,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 985 states have (on average 2.045685279187817) internal successors, (2015), 1595 states have internal predecessors, (2015), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:48:37,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2027 transitions. [2024-11-13 15:48:37,131 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2027 transitions. Word has length 8 [2024-11-13 15:48:37,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:48:37,131 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2027 transitions. [2024-11-13 15:48:37,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:48:37,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2027 transitions. [2024-11-13 15:48:37,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 15:48:37,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:48:37,132 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:48:37,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:48:37,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:37,333 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:48:37,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:48:37,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530194, now seen corresponding path program 1 times [2024-11-13 15:48:37,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:48:37,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270801714] [2024-11-13 15:48:37,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:48:37,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:37,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:48:37,336 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:48:37,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:48:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:48:37,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:48:37,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:48:37,543 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 [2024-11-13 15:48:37,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:48:37,560 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:48:37,561 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:48:37,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270801714] [2024-11-13 15:48:37,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270801714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:48:37,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:48:37,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:48:37,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680127607] [2024-11-13 15:48:37,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:48:37,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:48:37,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:48:37,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:48:37,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:48:37,563 INFO L87 Difference]: Start difference. First operand 1604 states and 2027 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2024-11-13 15:48:40,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:48:40,554 INFO L93 Difference]: Finished difference Result 2148 states and 2799 transitions. [2024-11-13 15:48:40,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:48:40,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 [2024-11-13 15:48:40,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:48:40,563 INFO L225 Difference]: With dead ends: 2148 [2024-11-13 15:48:40,563 INFO L226 Difference]: Without dead ends: 2148 [2024-11-13 15:48:40,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:48:40,564 INFO L432 NwaCegarLoop]: 1176 mSDtfsCounter, 940 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:48:40,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 1531 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 15:48:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2024-11-13 15:48:40,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 1556. [2024-11-13 15:48:40,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 985 states have (on average 1.9857868020304568) internal successors, (1956), 1547 states have internal predecessors, (1956), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:48:40,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 1968 transitions. [2024-11-13 15:48:40,608 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 1968 transitions. Word has length 9 [2024-11-13 15:48:40,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:48:40,608 INFO L471 AbstractCegarLoop]: Abstraction has 1556 states and 1968 transitions. [2024-11-13 15:48:40,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2024-11-13 15:48:40,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 1968 transitions. [2024-11-13 15:48:40,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 15:48:40,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:48:40,609 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:48:40,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:48:40,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:40,810 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:48:40,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:48:40,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530193, now seen corresponding path program 1 times [2024-11-13 15:48:40,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:48:40,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458185736] [2024-11-13 15:48:40,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:48:40,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:40,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:48:40,815 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:48:40,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:48:41,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:48:41,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:48:41,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:48:41,061 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 [2024-11-13 15:48:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:48:41,107 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:48:41,108 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:48:41,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458185736] [2024-11-13 15:48:41,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458185736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:48:41,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:48:41,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:48:41,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633853130] [2024-11-13 15:48:41,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:48:41,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:48:41,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:48:41,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:48:41,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:48:41,109 INFO L87 Difference]: Start difference. First operand 1556 states and 1968 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2024-11-13 15:48:45,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:48:45,678 INFO L93 Difference]: Finished difference Result 2247 states and 2898 transitions. [2024-11-13 15:48:45,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:48:45,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 [2024-11-13 15:48:45,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:48:45,686 INFO L225 Difference]: With dead ends: 2247 [2024-11-13 15:48:45,686 INFO L226 Difference]: Without dead ends: 2247 [2024-11-13 15:48:45,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:48:45,687 INFO L432 NwaCegarLoop]: 1363 mSDtfsCounter, 702 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:48:45,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1893 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-13 15:48:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2024-11-13 15:48:45,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 1583. [2024-11-13 15:48:45,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1022 states have (on average 1.9657534246575343) internal successors, (2009), 1574 states have internal predecessors, (2009), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:48:45,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2021 transitions. [2024-11-13 15:48:45,735 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2021 transitions. Word has length 9 [2024-11-13 15:48:45,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:48:45,736 INFO L471 AbstractCegarLoop]: Abstraction has 1583 states and 2021 transitions. [2024-11-13 15:48:45,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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) [2024-11-13 15:48:45,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2021 transitions. [2024-11-13 15:48:45,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 15:48:45,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:48:45,737 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:48:45,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 15:48:45,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:45,939 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:48:45,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:48:45,940 INFO L85 PathProgramCache]: Analyzing trace with hash -507821966, now seen corresponding path program 1 times [2024-11-13 15:48:45,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:48:45,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538665747] [2024-11-13 15:48:45,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:48:45,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:45,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:48:45,943 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:48:45,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:48:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:48:46,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:48:46,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:48:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:48:46,289 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:48:46,289 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:48:46,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538665747] [2024-11-13 15:48:46,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538665747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:48:46,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:48:46,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:48:46,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705996457] [2024-11-13 15:48:46,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:48:46,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:48:46,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:48:46,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:48:46,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:48:46,291 INFO L87 Difference]: Start difference. First operand 1583 states and 2021 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:48:47,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:48:47,632 INFO L93 Difference]: Finished difference Result 2201 states and 2776 transitions. [2024-11-13 15:48:47,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:48:47,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-13 15:48:47,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:48:47,641 INFO L225 Difference]: With dead ends: 2201 [2024-11-13 15:48:47,641 INFO L226 Difference]: Without dead ends: 2201 [2024-11-13 15:48:47,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:48:47,643 INFO L432 NwaCegarLoop]: 1384 mSDtfsCounter, 637 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 3784 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:48:47,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 3784 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 15:48:47,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2024-11-13 15:48:47,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 1841. [2024-11-13 15:48:47,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1278 states have (on average 1.9741784037558685) internal successors, (2523), 1830 states have internal predecessors, (2523), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 15:48:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2539 transitions. [2024-11-13 15:48:47,691 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2539 transitions. Word has length 12 [2024-11-13 15:48:47,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:48:47,692 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2539 transitions. [2024-11-13 15:48:47,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:48:47,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2539 transitions. [2024-11-13 15:48:47,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 15:48:47,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:48:47,693 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:48:47,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 15:48:47,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:47,897 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:48:47,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:48:47,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1030029400, now seen corresponding path program 1 times [2024-11-13 15:48:47,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:48:47,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181447329] [2024-11-13 15:48:47,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:48:47,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:47,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:48:47,900 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:48:47,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:48:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:48:48,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:48:48,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:48:48,130 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 [2024-11-13 15:48:48,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:48:48,198 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:48:48,198 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:48:48,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181447329] [2024-11-13 15:48:48,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181447329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:48:48,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:48:48,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:48:48,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931931104] [2024-11-13 15:48:48,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:48:48,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:48:48,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:48:48,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:48:48,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:48:48,200 INFO L87 Difference]: Start difference. First operand 1841 states and 2539 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) [2024-11-13 15:48:52,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:48:52,177 INFO L93 Difference]: Finished difference Result 2026 states and 2667 transitions. [2024-11-13 15:48:52,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:48:52,178 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 [2024-11-13 15:48:52,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:48:52,187 INFO L225 Difference]: With dead ends: 2026 [2024-11-13 15:48:52,187 INFO L226 Difference]: Without dead ends: 2026 [2024-11-13 15:48:52,188 INFO L431 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 [2024-11-13 15:48:52,189 INFO L432 NwaCegarLoop]: 710 mSDtfsCounter, 1155 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:48:52,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 1471 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-13 15:48:52,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2024-11-13 15:48:52,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1818. [2024-11-13 15:48:52,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1278 states have (on average 1.902190923317684) internal successors, (2431), 1807 states have internal predecessors, (2431), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 15:48:52,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2447 transitions. [2024-11-13 15:48:52,242 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2447 transitions. Word has length 14 [2024-11-13 15:48:52,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:48:52,243 INFO L471 AbstractCegarLoop]: Abstraction has 1818 states and 2447 transitions. [2024-11-13 15:48:52,243 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) [2024-11-13 15:48:52,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2447 transitions. [2024-11-13 15:48:52,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 15:48:52,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:48:52,245 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:48:52,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 15:48:52,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:52,446 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:48:52,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:48:52,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1030029401, now seen corresponding path program 1 times [2024-11-13 15:48:52,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:48:52,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676301293] [2024-11-13 15:48:52,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:48:52,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:52,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:48:52,449 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:48:52,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:48:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:48:52,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:48:52,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:48:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:48:52,679 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:48:52,679 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:48:52,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676301293] [2024-11-13 15:48:52,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676301293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:48:52,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:48:52,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:48:52,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802816614] [2024-11-13 15:48:52,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:48:52,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:48:52,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:48:52,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:48:52,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:48:52,681 INFO L87 Difference]: Start difference. First operand 1818 states and 2447 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2024-11-13 15:48:52,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:48:52,727 INFO L93 Difference]: Finished difference Result 1734 states and 2323 transitions. [2024-11-13 15:48:52,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:48:52,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 [2024-11-13 15:48:52,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:48:52,734 INFO L225 Difference]: With dead ends: 1734 [2024-11-13 15:48:52,734 INFO L226 Difference]: Without dead ends: 1734 [2024-11-13 15:48:52,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:48:52,735 INFO L432 NwaCegarLoop]: 1180 mSDtfsCounter, 61 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 2307 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:48:52,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 2307 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:48:52,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2024-11-13 15:48:52,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1734. [2024-11-13 15:48:52,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1734 states, 1206 states have (on average 1.9129353233830846) internal successors, (2307), 1723 states have internal predecessors, (2307), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 15:48:52,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2323 transitions. [2024-11-13 15:48:52,775 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2323 transitions. Word has length 14 [2024-11-13 15:48:52,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:48:52,775 INFO L471 AbstractCegarLoop]: Abstraction has 1734 states and 2323 transitions. [2024-11-13 15:48:52,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2024-11-13 15:48:52,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2323 transitions. [2024-11-13 15:48:52,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 15:48:52,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:48:52,779 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:48:52,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:48:52,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:52,980 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr355REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:48:52,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:48:52,981 INFO L85 PathProgramCache]: Analyzing trace with hash 2015799346, now seen corresponding path program 1 times [2024-11-13 15:48:52,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:48:52,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787232867] [2024-11-13 15:48:52,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:48:52,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:52,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:48:52,984 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:48:52,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:48:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:48:53,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:48:53,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:48:53,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:48:53,245 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:48:53,245 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:48:53,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787232867] [2024-11-13 15:48:53,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787232867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:48:53,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:48:53,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:48:53,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360594581] [2024-11-13 15:48:53,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:48:53,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:48:53,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:48:53,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:48:53,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:48:53,247 INFO L87 Difference]: Start difference. First operand 1734 states and 2323 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) [2024-11-13 15:48:53,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:48:53,390 INFO L93 Difference]: Finished difference Result 1695 states and 2235 transitions. [2024-11-13 15:48:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:48:53,391 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 [2024-11-13 15:48:53,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:48:53,398 INFO L225 Difference]: With dead ends: 1695 [2024-11-13 15:48:53,398 INFO L226 Difference]: Without dead ends: 1695 [2024-11-13 15:48:53,398 INFO L431 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 [2024-11-13 15:48:53,399 INFO L432 NwaCegarLoop]: 1142 mSDtfsCounter, 45 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:48:53,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3403 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:48:53,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2024-11-13 15:48:53,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1695. [2024-11-13 15:48:53,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1174 states have (on average 1.8901192504258943) internal successors, (2219), 1684 states have internal predecessors, (2219), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 15:48:53,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2235 transitions. [2024-11-13 15:48:53,469 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2235 transitions. Word has length 16 [2024-11-13 15:48:53,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:48:53,469 INFO L471 AbstractCegarLoop]: Abstraction has 1695 states and 2235 transitions. [2024-11-13 15:48:53,470 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) [2024-11-13 15:48:53,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2235 transitions. [2024-11-13 15:48:53,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 15:48:53,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:48:53,474 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:48:53,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 15:48:53,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:53,675 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr628ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:48:53,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:48:53,676 INFO L85 PathProgramCache]: Analyzing trace with hash -94309226, now seen corresponding path program 1 times [2024-11-13 15:48:53,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:48:53,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [803032951] [2024-11-13 15:48:53,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:48:53,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:53,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:48:53,678 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:48:53,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:48:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:48:53,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:48:53,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:48:54,101 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 [2024-11-13 15:48:54,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:48:54,102 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:48:54,103 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:48:54,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803032951] [2024-11-13 15:48:54,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803032951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:48:54,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:48:54,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:48:54,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678811338] [2024-11-13 15:48:54,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:48:54,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:48:54,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:48:54,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:48:54,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-13 15:48:54,105 INFO L87 Difference]: Start difference. First operand 1695 states and 2235 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-13 15:48:56,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:48:56,939 INFO L93 Difference]: Finished difference Result 1991 states and 2606 transitions. [2024-11-13 15:48:56,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:48:56,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2024-11-13 15:48:56,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:48:56,945 INFO L225 Difference]: With dead ends: 1991 [2024-11-13 15:48:56,945 INFO L226 Difference]: Without dead ends: 1983 [2024-11-13 15:48:56,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-13 15:48:56,945 INFO L432 NwaCegarLoop]: 1065 mSDtfsCounter, 242 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1422 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:48:56,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 1692 Invalid, 2064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 642 Invalid, 0 Unknown, 1422 Unchecked, 2.8s Time] [2024-11-13 15:48:56,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2024-11-13 15:48:56,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1753. [2024-11-13 15:48:56,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1231 states have (on average 1.8562144597887895) internal successors, (2285), 1741 states have internal predecessors, (2285), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 15:48:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2303 transitions. [2024-11-13 15:48:56,981 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2303 transitions. Word has length 17 [2024-11-13 15:48:56,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:48:56,981 INFO L471 AbstractCegarLoop]: Abstraction has 1753 states and 2303 transitions. [2024-11-13 15:48:56,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-13 15:48:56,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2303 transitions. [2024-11-13 15:48:56,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 15:48:56,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:48:56,982 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:48:57,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 15:48:57,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:57,183 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:48:57,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:48:57,183 INFO L85 PathProgramCache]: Analyzing trace with hash -179577158, now seen corresponding path program 1 times [2024-11-13 15:48:57,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:48:57,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165754973] [2024-11-13 15:48:57,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:48:57,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:57,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:48:57,186 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:48:57,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:48:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:48:57,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:48:57,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:48:57,435 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 [2024-11-13 15:48:57,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:48:57,515 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:48:57,515 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:48:57,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165754973] [2024-11-13 15:48:57,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165754973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:48:57,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:48:57,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:48:57,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323620721] [2024-11-13 15:48:57,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:48:57,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:48:57,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:48:57,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:48:57,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:48:57,517 INFO L87 Difference]: Start difference. First operand 1753 states and 2303 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2024-11-13 15:49:01,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:01,932 INFO L93 Difference]: Finished difference Result 2188 states and 2846 transitions. [2024-11-13 15:49:01,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:49:01,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2024-11-13 15:49:01,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:01,940 INFO L225 Difference]: With dead ends: 2188 [2024-11-13 15:49:01,940 INFO L226 Difference]: Without dead ends: 2188 [2024-11-13 15:49:01,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:01,941 INFO L432 NwaCegarLoop]: 1030 mSDtfsCounter, 905 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:01,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 2056 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-13 15:49:01,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2024-11-13 15:49:01,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 1730. [2024-11-13 15:49:01,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1231 states have (on average 1.8188464662875712) internal successors, (2239), 1718 states have internal predecessors, (2239), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 15:49:01,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2257 transitions. [2024-11-13 15:49:01,977 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2257 transitions. Word has length 19 [2024-11-13 15:49:01,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:01,978 INFO L471 AbstractCegarLoop]: Abstraction has 1730 states and 2257 transitions. [2024-11-13 15:49:01,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2024-11-13 15:49:01,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2257 transitions. [2024-11-13 15:49:01,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 15:49:01,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:01,979 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:02,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 15:49:02,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:02,180 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:49:02,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:02,180 INFO L85 PathProgramCache]: Analyzing trace with hash -179577157, now seen corresponding path program 1 times [2024-11-13 15:49:02,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:02,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1693576369] [2024-11-13 15:49:02,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:02,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:02,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:02,183 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:02,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:49:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:02,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:49:02,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:02,469 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:02,469 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:02,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693576369] [2024-11-13 15:49:02,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693576369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:02,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:02,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:49:02,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464229596] [2024-11-13 15:49:02,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:02,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:49:02,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:02,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:49:02,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:49:02,471 INFO L87 Difference]: Start difference. First operand 1730 states and 2257 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-11-13 15:49:02,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:02,526 INFO L93 Difference]: Finished difference Result 1682 states and 2195 transitions. [2024-11-13 15:49:02,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:49:02,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2024-11-13 15:49:02,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:02,540 INFO L225 Difference]: With dead ends: 1682 [2024-11-13 15:49:02,540 INFO L226 Difference]: Without dead ends: 1682 [2024-11-13 15:49:02,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:49:02,541 INFO L432 NwaCegarLoop]: 1098 mSDtfsCounter, 61 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:02,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 2143 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:49:02,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2024-11-13 15:49:02,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1682. [2024-11-13 15:49:02,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1195 states have (on average 1.8217573221757322) internal successors, (2177), 1670 states have internal predecessors, (2177), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 15:49:02,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2195 transitions. [2024-11-13 15:49:02,574 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2195 transitions. Word has length 19 [2024-11-13 15:49:02,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:02,576 INFO L471 AbstractCegarLoop]: Abstraction has 1682 states and 2195 transitions. [2024-11-13 15:49:02,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-11-13 15:49:02,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2195 transitions. [2024-11-13 15:49:02,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 15:49:02,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:02,578 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:02,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:02,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:02,782 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:49:02,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:02,783 INFO L85 PathProgramCache]: Analyzing trace with hash -774960908, now seen corresponding path program 1 times [2024-11-13 15:49:02,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:02,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352987789] [2024-11-13 15:49:02,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:02,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:02,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:02,787 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:02,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 15:49:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:03,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:49:03,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:03,100 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:03,100 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:03,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352987789] [2024-11-13 15:49:03,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352987789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:03,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:03,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:49:03,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245511850] [2024-11-13 15:49:03,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:03,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:49:03,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:03,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:49:03,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:49:03,103 INFO L87 Difference]: Start difference. First operand 1682 states and 2195 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2024-11-13 15:49:03,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:03,243 INFO L93 Difference]: Finished difference Result 1659 states and 2151 transitions. [2024-11-13 15:49:03,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:49:03,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-13 15:49:03,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:03,254 INFO L225 Difference]: With dead ends: 1659 [2024-11-13 15:49:03,254 INFO L226 Difference]: Without dead ends: 1659 [2024-11-13 15:49:03,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:03,257 INFO L432 NwaCegarLoop]: 1060 mSDtfsCounter, 45 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:03,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3157 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:49:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2024-11-13 15:49:03,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1659. [2024-11-13 15:49:03,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1179 states have (on average 1.8091603053435115) internal successors, (2133), 1647 states have internal predecessors, (2133), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 15:49:03,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2151 transitions. [2024-11-13 15:49:03,323 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2151 transitions. Word has length 21 [2024-11-13 15:49:03,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:03,324 INFO L471 AbstractCegarLoop]: Abstraction has 1659 states and 2151 transitions. [2024-11-13 15:49:03,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2024-11-13 15:49:03,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2151 transitions. [2024-11-13 15:49:03,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 15:49:03,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:03,326 INFO L215 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] [2024-11-13 15:49:03,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 15:49:03,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:03,527 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr369REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:49:03,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:03,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1100440288, now seen corresponding path program 1 times [2024-11-13 15:49:03,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:03,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925958703] [2024-11-13 15:49:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:03,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:03,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:03,530 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:03,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 15:49:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:03,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:49:03,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:03,775 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 [2024-11-13 15:49:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:04,074 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:04,074 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:04,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925958703] [2024-11-13 15:49:04,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925958703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:04,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:04,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:49:04,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940228471] [2024-11-13 15:49:04,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:04,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:49:04,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:04,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:49:04,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:49:04,076 INFO L87 Difference]: Start difference. First operand 1659 states and 2151 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-13 15:49:09,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:09,376 INFO L93 Difference]: Finished difference Result 2025 states and 2381 transitions. [2024-11-13 15:49:09,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:49:09,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 30 [2024-11-13 15:49:09,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:09,382 INFO L225 Difference]: With dead ends: 2025 [2024-11-13 15:49:09,383 INFO L226 Difference]: Without dead ends: 2025 [2024-11-13 15:49:09,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:09,383 INFO L432 NwaCegarLoop]: 838 mSDtfsCounter, 572 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:09,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1947 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-13 15:49:09,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2024-11-13 15:49:09,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 1659. [2024-11-13 15:49:09,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1179 states have (on average 1.7989821882951653) internal successors, (2121), 1647 states have internal predecessors, (2121), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 15:49:09,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2139 transitions. [2024-11-13 15:49:09,433 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2139 transitions. Word has length 30 [2024-11-13 15:49:09,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:09,433 INFO L471 AbstractCegarLoop]: Abstraction has 1659 states and 2139 transitions. [2024-11-13 15:49:09,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-13 15:49:09,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2139 transitions. [2024-11-13 15:49:09,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 15:49:09,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:09,434 INFO L215 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] [2024-11-13 15:49:09,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 15:49:09,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:09,637 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:49:09,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:09,638 INFO L85 PathProgramCache]: Analyzing trace with hash -2010845566, now seen corresponding path program 1 times [2024-11-13 15:49:09,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:09,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237609279] [2024-11-13 15:49:09,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:09,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:09,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:09,650 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:09,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 15:49:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:09,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:49:09,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:09,940 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 [2024-11-13 15:49:10,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:10,252 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:10,252 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:10,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237609279] [2024-11-13 15:49:10,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237609279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:10,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:10,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:49:10,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661467152] [2024-11-13 15:49:10,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:10,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:49:10,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:10,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:49:10,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:49:10,254 INFO L87 Difference]: Start difference. First operand 1659 states and 2139 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-13 15:49:15,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:15,698 INFO L93 Difference]: Finished difference Result 2181 states and 2758 transitions. [2024-11-13 15:49:15,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:49:15,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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 35 [2024-11-13 15:49:15,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:15,709 INFO L225 Difference]: With dead ends: 2181 [2024-11-13 15:49:15,709 INFO L226 Difference]: Without dead ends: 2181 [2024-11-13 15:49:15,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:15,710 INFO L432 NwaCegarLoop]: 1282 mSDtfsCounter, 549 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:15,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 2543 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-13 15:49:15,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2024-11-13 15:49:15,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 1655. [2024-11-13 15:49:15,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1179 states have (on average 1.7921967769296014) internal successors, (2113), 1643 states have internal predecessors, (2113), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 15:49:15,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2131 transitions. [2024-11-13 15:49:15,742 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2131 transitions. Word has length 35 [2024-11-13 15:49:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:15,742 INFO L471 AbstractCegarLoop]: Abstraction has 1655 states and 2131 transitions. [2024-11-13 15:49:15,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-13 15:49:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2131 transitions. [2024-11-13 15:49:15,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 15:49:15,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:15,744 INFO L215 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] [2024-11-13 15:49:15,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:15,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:15,945 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr414REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:49:15,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:15,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2088468614, now seen corresponding path program 1 times [2024-11-13 15:49:15,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:15,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379372790] [2024-11-13 15:49:15,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:15,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:15,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:15,949 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:15,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 15:49:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:16,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:49:16,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:16,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:16,273 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:16,273 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:16,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379372790] [2024-11-13 15:49:16,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379372790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:16,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:16,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:49:16,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311260736] [2024-11-13 15:49:16,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:16,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:49:16,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:16,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:49:16,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:49:16,275 INFO L87 Difference]: Start difference. First operand 1655 states and 2131 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:16,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:16,411 INFO L93 Difference]: Finished difference Result 1657 states and 1807 transitions. [2024-11-13 15:49:16,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:49:16,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-13 15:49:16,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:16,417 INFO L225 Difference]: With dead ends: 1657 [2024-11-13 15:49:16,417 INFO L226 Difference]: Without dead ends: 1657 [2024-11-13 15:49:16,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:49:16,418 INFO L432 NwaCegarLoop]: 1356 mSDtfsCounter, 319 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:16,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 2366 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:49:16,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2024-11-13 15:49:16,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1280. [2024-11-13 15:49:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 806 states have (on average 1.718362282878412) internal successors, (1385), 1270 states have internal predecessors, (1385), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 15:49:16,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1399 transitions. [2024-11-13 15:49:16,455 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1399 transitions. Word has length 49 [2024-11-13 15:49:16,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:16,456 INFO L471 AbstractCegarLoop]: Abstraction has 1280 states and 1399 transitions. [2024-11-13 15:49:16,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:16,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1399 transitions. [2024-11-13 15:49:16,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 15:49:16,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:16,461 INFO L215 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] [2024-11-13 15:49:16,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:16,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:16,661 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:49:16,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:16,662 INFO L85 PathProgramCache]: Analyzing trace with hash 139109408, now seen corresponding path program 1 times [2024-11-13 15:49:16,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:16,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1167487657] [2024-11-13 15:49:16,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:16,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:16,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:16,664 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:16,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 15:49:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:16,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:49:16,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:17,005 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:17,005 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:17,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167487657] [2024-11-13 15:49:17,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167487657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:17,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:17,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:49:17,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301229201] [2024-11-13 15:49:17,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:17,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:49:17,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:49:17,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:49:17,006 INFO L87 Difference]: Start difference. First operand 1280 states and 1399 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:17,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:17,076 INFO L93 Difference]: Finished difference Result 1262 states and 1369 transitions. [2024-11-13 15:49:17,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:49:17,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-13 15:49:17,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:17,080 INFO L225 Difference]: With dead ends: 1262 [2024-11-13 15:49:17,080 INFO L226 Difference]: Without dead ends: 1262 [2024-11-13 15:49:17,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:17,081 INFO L432 NwaCegarLoop]: 1058 mSDtfsCounter, 27 mSDsluCounter, 2079 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:17,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3137 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:49:17,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2024-11-13 15:49:17,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1262. [2024-11-13 15:49:17,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 788 states have (on average 1.7195431472081217) internal successors, (1355), 1252 states have internal predecessors, (1355), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 15:49:17,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1369 transitions. [2024-11-13 15:49:17,095 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1369 transitions. Word has length 52 [2024-11-13 15:49:17,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:17,095 INFO L471 AbstractCegarLoop]: Abstraction has 1262 states and 1369 transitions. [2024-11-13 15:49:17,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:17,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1369 transitions. [2024-11-13 15:49:17,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 15:49:17,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:17,096 INFO L215 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] [2024-11-13 15:49:17,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 15:49:17,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:17,297 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:49:17,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:17,297 INFO L85 PathProgramCache]: Analyzing trace with hash -843799935, now seen corresponding path program 1 times [2024-11-13 15:49:17,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:17,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389811616] [2024-11-13 15:49:17,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:17,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:17,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:17,300 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:17,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 15:49:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:17,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:49:17,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:17,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:17,651 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:17,651 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:17,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389811616] [2024-11-13 15:49:17,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389811616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:17,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:17,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:49:17,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734790627] [2024-11-13 15:49:17,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:17,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:49:17,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:17,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:49:17,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:49:17,653 INFO L87 Difference]: Start difference. First operand 1262 states and 1369 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-13 15:49:17,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:17,722 INFO L93 Difference]: Finished difference Result 1250 states and 1349 transitions. [2024-11-13 15:49:17,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:49:17,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2024-11-13 15:49:17,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:17,725 INFO L225 Difference]: With dead ends: 1250 [2024-11-13 15:49:17,725 INFO L226 Difference]: Without dead ends: 1250 [2024-11-13 15:49:17,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:17,726 INFO L432 NwaCegarLoop]: 1054 mSDtfsCounter, 21 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3131 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 [2024-11-13 15:49:17,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 3131 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:49:17,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2024-11-13 15:49:17,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250. [2024-11-13 15:49:17,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 776 states have (on average 1.7203608247422681) internal successors, (1335), 1240 states have internal predecessors, (1335), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 15:49:17,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1349 transitions. [2024-11-13 15:49:17,743 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1349 transitions. Word has length 54 [2024-11-13 15:49:17,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:17,743 INFO L471 AbstractCegarLoop]: Abstraction has 1250 states and 1349 transitions. [2024-11-13 15:49:17,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-11-13 15:49:17,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1349 transitions. [2024-11-13 15:49:17,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 15:49:17,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:17,745 INFO L215 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] [2024-11-13 15:49:17,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:17,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:17,945 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:49:17,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:17,946 INFO L85 PathProgramCache]: Analyzing trace with hash 523812460, now seen corresponding path program 1 times [2024-11-13 15:49:17,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:17,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615978965] [2024-11-13 15:49:17,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:17,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:17,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:17,948 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:17,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 15:49:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:18,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:49:18,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:18,270 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:49:18,271 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:49:18,272 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:49:18,275 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 [2024-11-13 15:49:18,358 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:49:18,358 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 [2024-11-13 15:49:18,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:18,427 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:18,427 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:18,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615978965] [2024-11-13 15:49:18,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615978965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:18,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:18,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:49:18,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74215567] [2024-11-13 15:49:18,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:18,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:49:18,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:18,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:49:18,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:18,429 INFO L87 Difference]: Start difference. First operand 1250 states and 1349 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:19,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:19,087 INFO L93 Difference]: Finished difference Result 1918 states and 2064 transitions. [2024-11-13 15:49:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:49:19,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-13 15:49:19,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:19,092 INFO L225 Difference]: With dead ends: 1918 [2024-11-13 15:49:19,092 INFO L226 Difference]: Without dead ends: 1915 [2024-11-13 15:49:19,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:49:19,093 INFO L432 NwaCegarLoop]: 1257 mSDtfsCounter, 2143 mSDsluCounter, 3289 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2151 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:19,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2151 Valid, 4546 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:49:19,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2024-11-13 15:49:19,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1197. [2024-11-13 15:49:19,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 724 states have (on average 1.770718232044199) internal successors, (1282), 1188 states have internal predecessors, (1282), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:49:19,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1294 transitions. [2024-11-13 15:49:19,111 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1294 transitions. Word has length 60 [2024-11-13 15:49:19,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:19,111 INFO L471 AbstractCegarLoop]: Abstraction has 1197 states and 1294 transitions. [2024-11-13 15:49:19,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:19,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1294 transitions. [2024-11-13 15:49:19,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 15:49:19,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:19,112 INFO L215 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] [2024-11-13 15:49:19,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 15:49:19,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:19,312 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:49:19,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:19,313 INFO L85 PathProgramCache]: Analyzing trace with hash 194486837, now seen corresponding path program 1 times [2024-11-13 15:49:19,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:19,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257754735] [2024-11-13 15:49:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:19,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:19,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:19,316 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:19,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 15:49:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:19,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:49:19,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:19,817 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 [2024-11-13 15:49:20,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:49:20,740 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 [2024-11-13 15:49:20,764 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:49:20,764 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 [2024-11-13 15:49:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:20,768 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:20,768 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:20,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257754735] [2024-11-13 15:49:20,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257754735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:20,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:20,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:49:20,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596727372] [2024-11-13 15:49:20,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:20,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:49:20,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:20,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:49:20,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:20,769 INFO L87 Difference]: Start difference. First operand 1197 states and 1294 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-11-13 15:49:25,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:25,433 INFO L93 Difference]: Finished difference Result 1531 states and 1655 transitions. [2024-11-13 15:49:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:49:25,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 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 62 [2024-11-13 15:49:25,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:25,436 INFO L225 Difference]: With dead ends: 1531 [2024-11-13 15:49:25,436 INFO L226 Difference]: Without dead ends: 1531 [2024-11-13 15:49:25,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:25,438 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 1790 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:25,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1795 Valid, 990 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-13 15:49:25,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2024-11-13 15:49:25,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1122. [2024-11-13 15:49:25,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 687 states have (on average 1.703056768558952) internal successors, (1170), 1113 states have internal predecessors, (1170), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:49:25,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1182 transitions. [2024-11-13 15:49:25,451 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1182 transitions. Word has length 62 [2024-11-13 15:49:25,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:25,451 INFO L471 AbstractCegarLoop]: Abstraction has 1122 states and 1182 transitions. [2024-11-13 15:49:25,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-11-13 15:49:25,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1182 transitions. [2024-11-13 15:49:25,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 15:49:25,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:25,452 INFO L215 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] [2024-11-13 15:49:25,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 15:49:25,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:25,653 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:49:25,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:25,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1964575352, now seen corresponding path program 1 times [2024-11-13 15:49:25,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:25,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079264106] [2024-11-13 15:49:25,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:25,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:25,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:25,656 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:25,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 15:49:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:26,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:49:26,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:26,095 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 [2024-11-13 15:49:26,122 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 19 treesize of output 1 [2024-11-13 15:49:26,159 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 [2024-11-13 15:49:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:26,178 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:26,178 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:26,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079264106] [2024-11-13 15:49:26,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079264106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:26,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:26,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:49:26,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619029640] [2024-11-13 15:49:26,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:26,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:49:26,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:26,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:49:26,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:26,180 INFO L87 Difference]: Start difference. First operand 1122 states and 1182 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-13 15:49:30,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:30,147 INFO L93 Difference]: Finished difference Result 1121 states and 1181 transitions. [2024-11-13 15:49:30,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:49:30,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2024-11-13 15:49:30,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:30,151 INFO L225 Difference]: With dead ends: 1121 [2024-11-13 15:49:30,151 INFO L226 Difference]: Without dead ends: 1121 [2024-11-13 15:49:30,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:30,156 INFO L432 NwaCegarLoop]: 1027 mSDtfsCounter, 2 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:30,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2652 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-13 15:49:30,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2024-11-13 15:49:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1121. [2024-11-13 15:49:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 687 states have (on average 1.7016011644832605) internal successors, (1169), 1112 states have internal predecessors, (1169), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:49:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1181 transitions. [2024-11-13 15:49:30,174 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1181 transitions. Word has length 67 [2024-11-13 15:49:30,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:30,174 INFO L471 AbstractCegarLoop]: Abstraction has 1121 states and 1181 transitions. [2024-11-13 15:49:30,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-13 15:49:30,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1181 transitions. [2024-11-13 15:49:30,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 15:49:30,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:30,176 INFO L215 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] [2024-11-13 15:49:30,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 15:49:30,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:30,377 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:49:30,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:30,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1964575353, now seen corresponding path program 1 times [2024-11-13 15:49:30,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:30,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652314764] [2024-11-13 15:49:30,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:30,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:30,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:30,385 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:30,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 15:49:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:30,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:49:30,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:30,783 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 [2024-11-13 15:49:30,813 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 [2024-11-13 15:49:30,821 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 [2024-11-13 15:49:30,911 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 [2024-11-13 15:49:30,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:30,946 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:30,947 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:30,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652314764] [2024-11-13 15:49:30,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652314764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:30,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:30,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:49:30,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861702332] [2024-11-13 15:49:30,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:30,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:49:30,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:30,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:49:30,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:30,948 INFO L87 Difference]: Start difference. First operand 1121 states and 1181 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-13 15:49:36,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:36,175 INFO L93 Difference]: Finished difference Result 1120 states and 1180 transitions. [2024-11-13 15:49:36,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:49:36,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2024-11-13 15:49:36,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:36,179 INFO L225 Difference]: With dead ends: 1120 [2024-11-13 15:49:36,179 INFO L226 Difference]: Without dead ends: 1120 [2024-11-13 15:49:36,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:36,180 INFO L432 NwaCegarLoop]: 1027 mSDtfsCounter, 1 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2659 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:36,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2659 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-13 15:49:36,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2024-11-13 15:49:36,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1120. [2024-11-13 15:49:36,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 686 states have (on average 1.7026239067055393) internal successors, (1168), 1111 states have internal predecessors, (1168), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:49:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1180 transitions. [2024-11-13 15:49:36,198 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1180 transitions. Word has length 67 [2024-11-13 15:49:36,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:36,198 INFO L471 AbstractCegarLoop]: Abstraction has 1120 states and 1180 transitions. [2024-11-13 15:49:36,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-13 15:49:36,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1180 transitions. [2024-11-13 15:49:36,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 15:49:36,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:36,200 INFO L215 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] [2024-11-13 15:49:36,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:36,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:36,401 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:49:36,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:36,402 INFO L85 PathProgramCache]: Analyzing trace with hash -707923361, now seen corresponding path program 1 times [2024-11-13 15:49:36,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:36,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087681992] [2024-11-13 15:49:36,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:36,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:36,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:36,405 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:36,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 15:49:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:36,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:49:36,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:36,810 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 [2024-11-13 15:49:36,941 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 [2024-11-13 15:49:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:36,959 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:36,960 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:36,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087681992] [2024-11-13 15:49:36,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087681992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:36,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:36,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:49:36,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962314853] [2024-11-13 15:49:36,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:36,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:49:36,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:36,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:49:36,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:49:36,962 INFO L87 Difference]: Start difference. First operand 1120 states and 1180 transitions. Second operand has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-11-13 15:49:42,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:42,746 INFO L93 Difference]: Finished difference Result 1132 states and 1195 transitions. [2024-11-13 15:49:42,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:49:42,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 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 75 [2024-11-13 15:49:42,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:42,752 INFO L225 Difference]: With dead ends: 1132 [2024-11-13 15:49:42,752 INFO L226 Difference]: Without dead ends: 1132 [2024-11-13 15:49:42,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:49:42,753 INFO L432 NwaCegarLoop]: 1013 mSDtfsCounter, 12 mSDsluCounter, 3205 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4218 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:42,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4218 Invalid, 1952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-13 15:49:42,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2024-11-13 15:49:42,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1126. [2024-11-13 15:49:42,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 691 states have (on average 1.7004341534008682) internal successors, (1175), 1116 states have internal predecessors, (1175), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-13 15:49:42,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1190 transitions. [2024-11-13 15:49:42,774 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1190 transitions. Word has length 75 [2024-11-13 15:49:42,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:42,774 INFO L471 AbstractCegarLoop]: Abstraction has 1126 states and 1190 transitions. [2024-11-13 15:49:42,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-11-13 15:49:42,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1190 transitions. [2024-11-13 15:49:42,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 15:49:42,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:42,776 INFO L215 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] [2024-11-13 15:49:42,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 15:49:42,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:42,977 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:49:42,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:42,977 INFO L85 PathProgramCache]: Analyzing trace with hash -707923360, now seen corresponding path program 1 times [2024-11-13 15:49:42,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:42,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1671594990] [2024-11-13 15:49:42,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:42,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:42,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:42,980 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:42,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 15:49:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:43,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:49:43,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:43,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:43,400 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:43,400 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:43,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671594990] [2024-11-13 15:49:43,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671594990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:43,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:43,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:49:43,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308726799] [2024-11-13 15:49:43,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:43,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:49:43,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:43,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:49:43,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:49:43,401 INFO L87 Difference]: Start difference. First operand 1126 states and 1190 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-13 15:49:43,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:43,455 INFO L93 Difference]: Finished difference Result 1123 states and 1184 transitions. [2024-11-13 15:49:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:49:43,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 75 [2024-11-13 15:49:43,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:43,460 INFO L225 Difference]: With dead ends: 1123 [2024-11-13 15:49:43,460 INFO L226 Difference]: Without dead ends: 1123 [2024-11-13 15:49:43,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:49:43,461 INFO L432 NwaCegarLoop]: 1027 mSDtfsCounter, 0 mSDsluCounter, 2049 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3076 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 [2024-11-13 15:49:43,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3076 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:49:43,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2024-11-13 15:49:43,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2024-11-13 15:49:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 688 states have (on average 1.7020348837209303) internal successors, (1171), 1114 states have internal predecessors, (1171), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-13 15:49:43,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1184 transitions. [2024-11-13 15:49:43,484 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1184 transitions. Word has length 75 [2024-11-13 15:49:43,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:43,485 INFO L471 AbstractCegarLoop]: Abstraction has 1123 states and 1184 transitions. [2024-11-13 15:49:43,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-13 15:49:43,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1184 transitions. [2024-11-13 15:49:43,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 15:49:43,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:43,486 INFO L215 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] [2024-11-13 15:49:43,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 15:49:43,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:43,687 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:49:43,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:43,688 INFO L85 PathProgramCache]: Analyzing trace with hash 273389550, now seen corresponding path program 1 times [2024-11-13 15:49:43,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:43,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2006216455] [2024-11-13 15:49:43,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:43,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:43,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:43,692 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:43,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 15:49:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:44,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:49:44,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:44,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:44,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:49:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:44,316 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:44,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006216455] [2024-11-13 15:49:44,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006216455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:49:44,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:49:44,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-13 15:49:44,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701738083] [2024-11-13 15:49:44,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:49:44,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:49:44,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:44,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:49:44,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:49:44,319 INFO L87 Difference]: Start difference. First operand 1123 states and 1184 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2024-11-13 15:49:44,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:44,561 INFO L93 Difference]: Finished difference Result 1135 states and 1201 transitions. [2024-11-13 15:49:44,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:49:44,562 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 76 [2024-11-13 15:49:44,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:44,566 INFO L225 Difference]: With dead ends: 1135 [2024-11-13 15:49:44,566 INFO L226 Difference]: Without dead ends: 1135 [2024-11-13 15:49:44,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:49:44,567 INFO L432 NwaCegarLoop]: 1027 mSDtfsCounter, 7 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4101 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:44,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4101 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:49:44,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2024-11-13 15:49:44,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1133. [2024-11-13 15:49:44,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1133 states, 697 states have (on average 1.7015781922525108) internal successors, (1186), 1123 states have internal predecessors, (1186), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-13 15:49:44,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1199 transitions. [2024-11-13 15:49:44,585 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1199 transitions. Word has length 76 [2024-11-13 15:49:44,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:44,585 INFO L471 AbstractCegarLoop]: Abstraction has 1133 states and 1199 transitions. [2024-11-13 15:49:44,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2024-11-13 15:49:44,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1199 transitions. [2024-11-13 15:49:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 15:49:44,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:44,586 INFO L215 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] [2024-11-13 15:49:44,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 15:49:44,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:44,787 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:49:44,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:44,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1523736095, now seen corresponding path program 2 times [2024-11-13 15:49:44,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:44,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1284270594] [2024-11-13 15:49:44,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:49:44,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:44,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:44,793 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:44,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 15:50:23,201 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:50:23,201 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:50:23,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 15:50:23,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:50:23,430 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:50:23,430 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 [2024-11-13 15:50:23,454 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 [2024-11-13 15:50:23,688 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:50:23,689 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 [2024-11-13 15:50:23,735 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 [2024-11-13 15:50:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:50:23,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:50:23,866 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-13 15:50:23,866 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 [2024-11-13 15:50:23,925 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:50:23,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284270594] [2024-11-13 15:50:23,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284270594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:50:23,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1429659138] [2024-11-13 15:50:23,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:50:23,925 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:50:23,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:50:23,939 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:50:23,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-13 15:50:25,756 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:50:25,756 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:50:25,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:50:25,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:50:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:50:26,026 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:50:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:50:26,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1429659138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:50:26,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:50:26,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-11-13 15:50:26,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94942681] [2024-11-13 15:50:26,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:50:26,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 15:50:26,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:50:26,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 15:50:26,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=553, Unknown=6, NotChecked=0, Total=650 [2024-11-13 15:50:26,397 INFO L87 Difference]: Start difference. First operand 1133 states and 1199 transitions. Second operand has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 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) [2024-11-13 15:50:42,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:50:42,028 INFO L93 Difference]: Finished difference Result 1521 states and 1621 transitions. [2024-11-13 15:50:42,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 15:50:42,028 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 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 79 [2024-11-13 15:50:42,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:50:42,031 INFO L225 Difference]: With dead ends: 1521 [2024-11-13 15:50:42,031 INFO L226 Difference]: Without dead ends: 1517 [2024-11-13 15:50:42,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=416, Invalid=2332, Unknown=8, NotChecked=0, Total=2756 [2024-11-13 15:50:42,032 INFO L432 NwaCegarLoop]: 667 mSDtfsCounter, 773 mSDsluCounter, 8278 mSDsCounter, 0 mSdLazyCounter, 6494 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 8945 SdHoareTripleChecker+Invalid, 6524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 6494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:50:42,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 8945 Invalid, 6524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 6494 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2024-11-13 15:50:42,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2024-11-13 15:50:42,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1141. [2024-11-13 15:50:42,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 706 states have (on average 1.6954674220963173) internal successors, (1197), 1131 states have internal predecessors, (1197), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-13 15:50:42,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1210 transitions. [2024-11-13 15:50:42,055 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1210 transitions. Word has length 79 [2024-11-13 15:50:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:50:42,055 INFO L471 AbstractCegarLoop]: Abstraction has 1141 states and 1210 transitions. [2024-11-13 15:50:42,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 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) [2024-11-13 15:50:42,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1210 transitions. [2024-11-13 15:50:42,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-13 15:50:42,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:50:42,057 INFO L215 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] [2024-11-13 15:50:42,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-13 15:50:42,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2024-11-13 15:50:42,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 15:50:42,458 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:50:42,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:50:42,458 INFO L85 PathProgramCache]: Analyzing trace with hash 344964032, now seen corresponding path program 1 times [2024-11-13 15:50:42,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:50:42,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508172111] [2024-11-13 15:50:42,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:50:42,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:42,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:50:42,461 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:50:42,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 15:50:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:42,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 15:50:42,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:50:43,143 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:50:43,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:50:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:50:44,007 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:50:44,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508172111] [2024-11-13 15:50:44,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508172111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:50:44,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:50:44,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-13 15:50:44,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924882968] [2024-11-13 15:50:44,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:50:44,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 15:50:44,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:50:44,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 15:50:44,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:50:44,009 INFO L87 Difference]: Start difference. First operand 1141 states and 1210 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 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) [2024-11-13 15:50:46,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:50:46,717 INFO L93 Difference]: Finished difference Result 1165 states and 1249 transitions. [2024-11-13 15:50:46,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 15:50:46,717 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 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 85 [2024-11-13 15:50:46,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:50:46,720 INFO L225 Difference]: With dead ends: 1165 [2024-11-13 15:50:46,720 INFO L226 Difference]: Without dead ends: 1159 [2024-11-13 15:50:46,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 15:50:46,721 INFO L432 NwaCegarLoop]: 1027 mSDtfsCounter, 23 mSDsluCounter, 11265 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 12292 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:50:46,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 12292 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 15:50:46,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-13 15:50:46,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1159. [2024-11-13 15:50:46,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 724 states have (on average 1.6850828729281768) internal successors, (1220), 1149 states have internal predecessors, (1220), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-13 15:50:46,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1233 transitions. [2024-11-13 15:50:46,740 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1233 transitions. Word has length 85 [2024-11-13 15:50:46,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:50:46,741 INFO L471 AbstractCegarLoop]: Abstraction has 1159 states and 1233 transitions. [2024-11-13 15:50:46,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 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) [2024-11-13 15:50:46,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1233 transitions. [2024-11-13 15:50:46,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-13 15:50:46,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:50:46,743 INFO L215 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] [2024-11-13 15:50:46,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 15:50:46,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:46,943 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:50:46,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:50:46,944 INFO L85 PathProgramCache]: Analyzing trace with hash 829837056, now seen corresponding path program 2 times [2024-11-13 15:50:46,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:50:46,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707014244] [2024-11-13 15:50:46,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:50:46,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:46,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:50:46,948 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:50:46,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 15:51:19,832 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:51:19,833 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:51:19,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-13 15:51:19,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:51:20,076 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:51:20,076 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 [2024-11-13 15:51:20,086 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 [2024-11-13 15:51:20,136 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 [2024-11-13 15:51:20,154 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 [2024-11-13 15:51:20,319 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 [2024-11-13 15:51:20,326 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 [2024-11-13 15:51:20,971 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:51:20,971 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 [2024-11-13 15:51:20,989 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 [2024-11-13 15:51:21,044 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 [2024-11-13 15:51:21,053 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 [2024-11-13 15:51:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-13 15:51:21,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:51:21,763 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2076 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2076) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_2076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2077 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2076) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2077) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:51:21,770 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:51:21,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707014244] [2024-11-13 15:51:21,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707014244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:51:21,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1920746992] [2024-11-13 15:51:21,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:51:21,771 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:51:21,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:51:21,772 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:51:21,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-13 15:51:24,011 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:51:24,011 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:51:24,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 15:51:24,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:51:25,300 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:51:25,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:51:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:51:28,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1920746992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:51:28,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:51:28,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2024-11-13 15:51:28,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862449496] [2024-11-13 15:51:28,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:51:28,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-13 15:51:28,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:51:28,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-13 15:51:28,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2024-11-13 15:51:28,419 INFO L87 Difference]: Start difference. First operand 1159 states and 1233 transitions. Second operand has 58 states, 57 states have (on average 3.1403508771929824) internal successors, (179), 58 states have internal predecessors, (179), 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) [2024-11-13 15:52:18,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:52:18,714 INFO L93 Difference]: Finished difference Result 1574 states and 1705 transitions. [2024-11-13 15:52:18,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-13 15:52:18,714 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.1403508771929824) internal successors, (179), 58 states have internal predecessors, (179), 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 97 [2024-11-13 15:52:18,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:52:18,718 INFO L225 Difference]: With dead ends: 1574 [2024-11-13 15:52:18,718 INFO L226 Difference]: Without dead ends: 1566 [2024-11-13 15:52:18,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3088 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=3106, Invalid=14987, Unknown=1, NotChecked=266, Total=18360 [2024-11-13 15:52:18,723 INFO L432 NwaCegarLoop]: 673 mSDtfsCounter, 793 mSDsluCounter, 18290 mSDsCounter, 0 mSdLazyCounter, 15181 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 18963 SdHoareTripleChecker+Invalid, 15249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 15181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:52:18,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 18963 Invalid, 15249 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [68 Valid, 15181 Invalid, 0 Unknown, 0 Unchecked, 38.7s Time] [2024-11-13 15:52:18,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2024-11-13 15:52:18,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1192. [2024-11-13 15:52:18,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 758 states have (on average 1.6635883905013193) internal successors, (1261), 1182 states have internal predecessors, (1261), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-13 15:52:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1274 transitions. [2024-11-13 15:52:18,744 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1274 transitions. Word has length 97 [2024-11-13 15:52:18,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:52:18,744 INFO L471 AbstractCegarLoop]: Abstraction has 1192 states and 1274 transitions. [2024-11-13 15:52:18,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.1403508771929824) internal successors, (179), 58 states have internal predecessors, (179), 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) [2024-11-13 15:52:18,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1274 transitions. [2024-11-13 15:52:18,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-13 15:52:18,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:52:18,746 INFO L215 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] [2024-11-13 15:52:18,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-13 15:52:18,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2024-11-13 15:52:19,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 15:52:19,147 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:52:19,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:52:19,148 INFO L85 PathProgramCache]: Analyzing trace with hash -909988260, now seen corresponding path program 1 times [2024-11-13 15:52:19,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:52:19,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746827298] [2024-11-13 15:52:19,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:19,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:19,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:52:19,151 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:52:19,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 15:52:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:19,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-13 15:52:19,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:52:20,021 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:52:20,021 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 [2024-11-13 15:52:20,043 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 [2024-11-13 15:52:20,767 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:52:20,768 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 [2024-11-13 15:52:20,902 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:52:20,902 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 [2024-11-13 15:52:20,925 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 [2024-11-13 15:52:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:52:20,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:52:21,096 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2736 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2736) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 15:52:21,667 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-13 15:52:21,667 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 [2024-11-13 15:52:21,679 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2782 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2736 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem36#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2782))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2736)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-13 15:52:21,681 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:52:21,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746827298] [2024-11-13 15:52:21,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746827298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:52:21,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1331877413] [2024-11-13 15:52:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:21,681 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:52:21,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:52:21,683 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:52:21,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-13 15:52:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:26,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-13 15:52:26,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:52:26,052 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 [2024-11-13 15:52:26,275 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 15:52:26,275 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 [2024-11-13 15:52:26,369 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 [2024-11-13 15:52:26,575 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 [2024-11-13 15:52:28,233 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:52:28,233 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 [2024-11-13 15:52:28,448 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:52:28,449 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 [2024-11-13 15:52:28,495 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 [2024-11-13 15:52:28,603 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:52:28,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:52:28,631 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3206 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3206) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-13 15:52:28,646 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3206 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3206) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 15:52:29,266 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3206 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3252 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3252))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3206)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-13 15:52:29,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1331877413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:52:29,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:52:29,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2024-11-13 15:52:29,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355754958] [2024-11-13 15:52:29,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:52:29,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:52:29,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:52:29,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:52:29,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=388, Unknown=12, NotChecked=220, Total=702 [2024-11-13 15:52:29,270 INFO L87 Difference]: Start difference. First operand 1192 states and 1274 transitions. Second operand has 20 states, 17 states have (on average 7.411764705882353) internal successors, (126), 19 states have internal predecessors, (126), 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) [2024-11-13 15:52:40,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:52:40,512 INFO L93 Difference]: Finished difference Result 1565 states and 1674 transitions. [2024-11-13 15:52:40,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:52:40,513 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 7.411764705882353) internal successors, (126), 19 states have internal predecessors, (126), 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 122 [2024-11-13 15:52:40,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:52:40,515 INFO L225 Difference]: With dead ends: 1565 [2024-11-13 15:52:40,515 INFO L226 Difference]: Without dead ends: 1565 [2024-11-13 15:52:40,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=551, Unknown=12, NotChecked=260, Total=930 [2024-11-13 15:52:40,516 INFO L432 NwaCegarLoop]: 666 mSDtfsCounter, 722 mSDsluCounter, 4913 mSDsCounter, 0 mSdLazyCounter, 4373 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 5579 SdHoareTripleChecker+Invalid, 4385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 4373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:52:40,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 5579 Invalid, 4385 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 4373 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2024-11-13 15:52:40,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2024-11-13 15:52:40,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1191. [2024-11-13 15:52:40,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 758 states have (on average 1.6622691292875988) internal successors, (1260), 1181 states have internal predecessors, (1260), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-13 15:52:40,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1273 transitions. [2024-11-13 15:52:40,536 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1273 transitions. Word has length 122 [2024-11-13 15:52:40,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:52:40,537 INFO L471 AbstractCegarLoop]: Abstraction has 1191 states and 1273 transitions. [2024-11-13 15:52:40,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 7.411764705882353) internal successors, (126), 19 states have internal predecessors, (126), 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) [2024-11-13 15:52:40,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1273 transitions. [2024-11-13 15:52:40,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-13 15:52:40,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:52:40,539 INFO L215 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] [2024-11-13 15:52:40,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2024-11-13 15:52:40,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 15:52:40,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:40,940 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:52:40,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:52:40,940 INFO L85 PathProgramCache]: Analyzing trace with hash -909988259, now seen corresponding path program 1 times [2024-11-13 15:52:40,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:52:40,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549873023] [2024-11-13 15:52:40,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:40,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:52:40,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:52:40,943 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:52:40,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 15:52:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:41,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-13 15:52:41,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:52:41,909 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:52:41,910 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 [2024-11-13 15:52:41,921 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 [2024-11-13 15:52:41,965 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 [2024-11-13 15:52:41,972 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 [2024-11-13 15:52:42,137 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 [2024-11-13 15:52:42,145 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 [2024-11-13 15:52:43,145 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:52:43,145 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 [2024-11-13 15:52:43,162 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 [2024-11-13 15:52:43,328 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:52:43,329 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 [2024-11-13 15:52:43,342 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 [2024-11-13 15:52:43,382 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 [2024-11-13 15:52:43,396 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 [2024-11-13 15:52:43,442 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:52:43,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:52:43,696 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3721 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3722 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3721) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3722) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3721 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3721) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-13 15:52:43,741 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_3721 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3722 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3721) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3722) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_3721 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3721) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2024-11-13 15:52:46,056 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:52:46,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549873023] [2024-11-13 15:52:46,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549873023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:52:46,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [211646083] [2024-11-13 15:52:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:52:46,056 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:52:46,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:52:46,058 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:52:46,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-13 15:52:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:52:50,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-13 15:52:50,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:52:50,406 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 [2024-11-13 15:52:50,567 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 [2024-11-13 15:52:50,584 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:52:50,585 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 [2024-11-13 15:52:50,601 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 [2024-11-13 15:52:50,616 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 [2024-11-13 15:52:50,689 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 [2024-11-13 15:52:50,700 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 [2024-11-13 15:52:51,691 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:52:51,692 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 [2024-11-13 15:52:51,702 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 [2024-11-13 15:52:51,803 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:52:51,803 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 [2024-11-13 15:52:51,816 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 [2024-11-13 15:52:51,875 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 [2024-11-13 15:52:51,888 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 [2024-11-13 15:52:51,894 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:52:51,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:52:51,969 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4284 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4284) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4285) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_4284 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4284) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-13 15:52:52,003 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_4284 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_4284) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4284 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_4284) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_4285) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-13 15:52:53,876 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4377 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4376 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4284 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4377) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4376) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4284) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4377 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4376 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4284 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4376))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4377) .cse2 v_ArrVal_4284) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_4285) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 15:52:53,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [211646083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:52:53,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:52:53,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 10 [2024-11-13 15:52:53,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365338868] [2024-11-13 15:52:53,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:52:53,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:52:53,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:52:53,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:52:53,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=147, Unknown=12, NotChecked=140, Total=342 [2024-11-13 15:52:53,886 INFO L87 Difference]: Start difference. First operand 1191 states and 1273 transitions. Second operand has 11 states, 9 states have (on average 12.0) internal successors, (108), 11 states have internal predecessors, (108), 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) [2024-11-13 15:53:10,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:53:10,527 INFO L93 Difference]: Finished difference Result 1562 states and 1671 transitions. [2024-11-13 15:53:10,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:53:10,529 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 12.0) internal successors, (108), 11 states have internal predecessors, (108), 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 122 [2024-11-13 15:53:10,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:53:10,531 INFO L225 Difference]: With dead ends: 1562 [2024-11-13 15:53:10,531 INFO L226 Difference]: Without dead ends: 1562 [2024-11-13 15:53:10,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 236 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=308, Unknown=13, NotChecked=200, Total=600 [2024-11-13 15:53:10,531 INFO L432 NwaCegarLoop]: 673 mSDtfsCounter, 719 mSDsluCounter, 3652 mSDsCounter, 0 mSdLazyCounter, 5579 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 5586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 5579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:53:10,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 4325 Invalid, 5586 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 5579 Invalid, 0 Unknown, 0 Unchecked, 16.1s Time] [2024-11-13 15:53:10,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2024-11-13 15:53:10,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1190. [2024-11-13 15:53:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 758 states have (on average 1.6609498680738786) internal successors, (1259), 1180 states have internal predecessors, (1259), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-13 15:53:10,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1272 transitions. [2024-11-13 15:53:10,547 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1272 transitions. Word has length 122 [2024-11-13 15:53:10,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:53:10,547 INFO L471 AbstractCegarLoop]: Abstraction has 1190 states and 1272 transitions. [2024-11-13 15:53:10,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 12.0) internal successors, (108), 11 states have internal predecessors, (108), 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) [2024-11-13 15:53:10,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1272 transitions. [2024-11-13 15:53:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-13 15:53:10,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:53:10,549 INFO L215 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] [2024-11-13 15:53:10,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2024-11-13 15:53:10,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 15:53:10,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:53:10,951 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:53:10,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:53:10,951 INFO L85 PathProgramCache]: Analyzing trace with hash 373635494, now seen corresponding path program 1 times [2024-11-13 15:53:10,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:53:10,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772480399] [2024-11-13 15:53:10,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:53:10,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:53:10,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:53:10,956 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:53:10,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-13 15:53:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:11,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-13 15:53:11,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:53:11,938 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:53:11,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:53:11,964 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 [2024-11-13 15:53:12,397 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:53:12,397 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 [2024-11-13 15:53:12,472 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:53:12,473 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 [2024-11-13 15:53:12,551 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:53:12,551 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 [2024-11-13 15:53:12,614 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 [2024-11-13 15:53:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:53:12,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:53:12,711 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-13 15:53:12,712 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 [2024-11-13 15:53:12,798 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4815 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_4815) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse0)))) is different from false [2024-11-13 15:53:12,816 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4815 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4814)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_4815) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-13 15:53:12,829 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4815 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4814))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_4815) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-13 15:53:13,391 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4815 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4861 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4861))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4814)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_4815) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-13 15:53:13,394 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:53:13,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772480399] [2024-11-13 15:53:13,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772480399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:53:13,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [815368664] [2024-11-13 15:53:13,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:53:13,395 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:53:13,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:53:13,400 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:53:13,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2024-11-13 15:53:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:28,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-13 15:53:28,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:53:28,795 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 [2024-11-13 15:53:28,937 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 15:53:28,938 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 [2024-11-13 15:53:28,992 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 [2024-11-13 15:53:29,147 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 [2024-11-13 15:53:30,251 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:53:30,251 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 [2024-11-13 15:53:30,413 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:53:30,414 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 [2024-11-13 15:53:30,520 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:53:30,520 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 [2024-11-13 15:53:30,544 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 [2024-11-13 15:53:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:53:30,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:53:30,616 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5301 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5301) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-13 15:53:30,625 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5301 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5301) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 15:53:30,639 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5300 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5301 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5300))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5301)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:53:30,650 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5300 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5301 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5300))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5301)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:53:31,077 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5300 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5301 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5347 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5347))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5300)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5301)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:53:31,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [815368664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:53:31,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:53:31,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2024-11-13 15:53:31,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819725345] [2024-11-13 15:53:31,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:53:31,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 15:53:31,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:53:31,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 15:53:31,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=429, Unknown=15, NotChecked=450, Total=992 [2024-11-13 15:53:31,081 INFO L87 Difference]: Start difference. First operand 1190 states and 1272 transitions. Second operand has 21 states, 18 states have (on average 7.333333333333333) internal successors, (132), 21 states have internal predecessors, (132), 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) [2024-11-13 15:53:46,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:53:46,607 INFO L93 Difference]: Finished difference Result 1563 states and 1672 transitions. [2024-11-13 15:53:46,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:53:46,608 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 7.333333333333333) internal successors, (132), 21 states have internal predecessors, (132), 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 125 [2024-11-13 15:53:46,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:53:46,610 INFO L225 Difference]: With dead ends: 1563 [2024-11-13 15:53:46,611 INFO L226 Difference]: Without dead ends: 1563 [2024-11-13 15:53:46,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=510, Unknown=15, NotChecked=486, Total=1122 [2024-11-13 15:53:46,612 INFO L432 NwaCegarLoop]: 667 mSDtfsCounter, 723 mSDsluCounter, 7031 mSDsCounter, 0 mSdLazyCounter, 6106 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 7698 SdHoareTripleChecker+Invalid, 6121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 6106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:53:46,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 7698 Invalid, 6121 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 6106 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2024-11-13 15:53:46,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2024-11-13 15:53:46,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1189. [2024-11-13 15:53:46,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 758 states have (on average 1.6596306068601583) internal successors, (1258), 1179 states have internal predecessors, (1258), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-13 15:53:46,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1271 transitions. [2024-11-13 15:53:46,634 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1271 transitions. Word has length 125 [2024-11-13 15:53:46,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:53:46,634 INFO L471 AbstractCegarLoop]: Abstraction has 1189 states and 1271 transitions. [2024-11-13 15:53:46,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 7.333333333333333) internal successors, (132), 21 states have internal predecessors, (132), 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) [2024-11-13 15:53:46,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1271 transitions. [2024-11-13 15:53:46,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-13 15:53:46,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:53:46,636 INFO L215 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] [2024-11-13 15:53:46,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2024-11-13 15:53:46,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-13 15:53:47,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:53:47,037 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:53:47,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:53:47,038 INFO L85 PathProgramCache]: Analyzing trace with hash 373635495, now seen corresponding path program 1 times [2024-11-13 15:53:47,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:53:47,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707569622] [2024-11-13 15:53:47,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:53:47,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:53:47,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:53:47,040 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:53:47,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 15:53:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:47,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-13 15:53:47,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:53:48,190 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:53:48,191 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 [2024-11-13 15:53:48,202 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 [2024-11-13 15:53:48,247 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 [2024-11-13 15:53:48,255 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 [2024-11-13 15:53:48,457 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 22 treesize of output 10 [2024-11-13 15:53:48,464 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 [2024-11-13 15:53:49,466 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:53:49,467 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 [2024-11-13 15:53:49,478 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 [2024-11-13 15:53:49,629 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:53:49,629 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 [2024-11-13 15:53:49,643 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 [2024-11-13 15:53:49,777 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:53:49,778 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 [2024-11-13 15:53:49,788 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 [2024-11-13 15:53:49,826 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 [2024-11-13 15:53:49,838 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 [2024-11-13 15:53:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:53:49,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:53:50,110 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5833 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5833) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5834 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5833) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:53:50,152 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5833 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5833) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5834 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5833) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_5834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-13 15:53:50,252 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5832 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5831 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5832) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5831) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5833) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5832 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5831 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5831))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5832) .cse2 v_ArrVal_5833) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 15:53:50,326 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5832 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5831 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5831))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5832) .cse1 v_ArrVal_5833) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_5832 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5831 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5832) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5831) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5833) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv8 32)) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2024-11-13 15:53:52,729 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5925 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5926 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5832 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5831 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5926))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5925) .cse1 v_ArrVal_5832) (select (select (store .cse2 .cse1 v_ArrVal_5831) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_5833))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_5925 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5926 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5832 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5831 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5926))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_5831))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5925) .cse4 v_ArrVal_5832) .cse5 v_ArrVal_5833) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_5834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-13 15:53:52,743 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:53:52,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707569622] [2024-11-13 15:53:52,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707569622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:53:52,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [169229187] [2024-11-13 15:53:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:53:52,744 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:53:52,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:53:52,746 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:53:52,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2024-11-13 15:54:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:07,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-13 15:54:08,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:54:08,014 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 [2024-11-13 15:54:08,457 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 [2024-11-13 15:54:08,497 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:54:08,498 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 [2024-11-13 15:54:08,527 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 [2024-11-13 15:54:08,537 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 [2024-11-13 15:54:08,693 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 [2024-11-13 15:54:08,710 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 [2024-11-13 15:54:10,649 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:54:10,649 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 [2024-11-13 15:54:10,675 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 [2024-11-13 15:54:10,831 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:54:10,832 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 [2024-11-13 15:54:10,850 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 [2024-11-13 15:54:10,976 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:54:10,976 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 [2024-11-13 15:54:10,994 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 [2024-11-13 15:54:11,052 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 [2024-11-13 15:54:11,072 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 [2024-11-13 15:54:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:54:11,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:54:11,215 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6415 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6415) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6415 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6414 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6415) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6414) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:54:11,277 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6415 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_6415) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6415 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6414 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_6415) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_6414) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-13 15:54:11,376 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6415 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6412 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6413 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6413) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6412) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6415) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6415 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6412 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6413 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6414 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6412))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6413) .cse2 v_ArrVal_6415) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_6414) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 15:54:11,490 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6415 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6412 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6413 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_6413) (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_6412) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6415) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6415 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6412 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6413 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6414 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_6412))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_6413) .cse3 v_ArrVal_6415) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_6414) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-13 15:54:16,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [169229187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:54:16,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:54:16,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 11 [2024-11-13 15:54:16,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613772264] [2024-11-13 15:54:16,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:54:16,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 15:54:16,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:54:16,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 15:54:16,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=175, Unknown=16, NotChecked=306, Total=552 [2024-11-13 15:54:16,586 INFO L87 Difference]: Start difference. First operand 1189 states and 1271 transitions. Second operand has 12 states, 10 states have (on average 11.1) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-11-13 15:54:46,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:54:46,337 INFO L93 Difference]: Finished difference Result 1560 states and 1669 transitions. [2024-11-13 15:54:46,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:54:46,338 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 11.1) internal successors, (111), 12 states have internal predecessors, (111), 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 125 [2024-11-13 15:54:46,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:54:46,340 INFO L225 Difference]: With dead ends: 1560 [2024-11-13 15:54:46,340 INFO L226 Difference]: Without dead ends: 1560 [2024-11-13 15:54:46,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 243 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=98, Invalid=383, Unknown=17, NotChecked=432, Total=930 [2024-11-13 15:54:46,341 INFO L432 NwaCegarLoop]: 672 mSDtfsCounter, 717 mSDsluCounter, 3261 mSDsCounter, 0 mSdLazyCounter, 4928 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 3933 SdHoareTripleChecker+Invalid, 4935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 4928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:54:46,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 3933 Invalid, 4935 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 4928 Invalid, 0 Unknown, 0 Unchecked, 28.7s Time] [2024-11-13 15:54:46,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2024-11-13 15:54:46,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1188. [2024-11-13 15:54:46,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 758 states have (on average 1.658311345646438) internal successors, (1257), 1178 states have internal predecessors, (1257), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-13 15:54:46,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1270 transitions. [2024-11-13 15:54:46,353 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1270 transitions. Word has length 125 [2024-11-13 15:54:46,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:54:46,353 INFO L471 AbstractCegarLoop]: Abstraction has 1188 states and 1270 transitions. [2024-11-13 15:54:46,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 11.1) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-11-13 15:54:46,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1270 transitions. [2024-11-13 15:54:46,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-13 15:54:46,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:54:46,354 INFO L215 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] [2024-11-13 15:54:46,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-13 15:54:46,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (40)] Ended with exit code 0 [2024-11-13 15:54:46,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 15:54:46,755 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:54:46,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:46,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1579905725, now seen corresponding path program 1 times [2024-11-13 15:54:46,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:54:46,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668394909] [2024-11-13 15:54:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:46,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:46,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:54:46,759 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:54:46,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-13 15:54:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:47,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-13 15:54:47,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:54:48,193 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:54:48,193 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 [2024-11-13 15:54:48,258 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 [2024-11-13 15:54:49,298 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:54:49,298 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 [2024-11-13 15:54:49,528 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:54:49,528 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 [2024-11-13 15:54:49,783 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:54:49,783 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 [2024-11-13 15:54:49,997 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:54:49,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 15:54:50,151 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 [2024-11-13 15:54:50,246 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:54:50,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:54:50,414 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-13 15:54:50,414 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 [2024-11-13 15:54:50,623 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6961 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_6961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse0)))) is different from false [2024-11-13 15:54:50,661 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6961 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6960 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6960)) (.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_6961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2024-11-13 15:54:50,687 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6961 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6960 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6960))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-13 15:54:50,727 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6959 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6961 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6960 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6959))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6960)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-13 15:54:50,756 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6959 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6961 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6960 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6959))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6960)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-13 15:54:51,646 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6959 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6961 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7007 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6960 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7007))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6959)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6960)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-13 15:54:51,651 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:54:51,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668394909] [2024-11-13 15:54:51,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668394909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:54:51,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [446922714] [2024-11-13 15:54:51,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:51,652 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:54:51,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:54:51,654 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:54:51,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2024-11-13 15:55:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:09,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-13 15:55:09,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:55:09,381 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 [2024-11-13 15:55:10,036 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 15:55:10,036 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 [2024-11-13 15:55:10,202 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 [2024-11-13 15:55:10,673 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 [2024-11-13 15:55:13,485 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:55:13,485 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 [2024-11-13 15:55:13,968 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:55:13,969 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 [2024-11-13 15:55:14,323 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:55:14,324 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 [2024-11-13 15:55:14,689 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:55:14,690 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 [2024-11-13 15:55:14,764 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 [2024-11-13 15:55:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:55:14,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:55:15,025 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7464 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7464) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-13 15:55:15,057 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7464 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7464) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 15:55:15,095 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7463 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7464 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7463))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7464)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:55:15,121 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7463 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7464 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7463))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7464)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:55:15,160 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7462 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7463 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7464 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7462))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7463)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7464)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:55:15,190 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7462 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7463 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7464 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7462))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7463)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7464)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-13 15:55:16,058 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7462 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7463 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7464 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7510 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7510))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7462)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7463)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7464)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:55:16,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [446922714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:55:16,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:55:16,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2024-11-13 15:55:16,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574430390] [2024-11-13 15:55:16,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:55:16,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 15:55:16,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:55:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 15:55:16,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=512, Unknown=23, NotChecked=754, Total=1406 [2024-11-13 15:55:16,068 INFO L87 Difference]: Start difference. First operand 1188 states and 1270 transitions. Second operand has 23 states, 20 states have (on average 6.9) internal successors, (138), 23 states have internal predecessors, (138), 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) [2024-11-13 15:55:42,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:55:42,690 INFO L93 Difference]: Finished difference Result 1561 states and 1670 transitions. [2024-11-13 15:55:42,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:55:42,691 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 6.9) internal successors, (138), 23 states have internal predecessors, (138), 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 128 [2024-11-13 15:55:42,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:55:42,693 INFO L225 Difference]: With dead ends: 1561 [2024-11-13 15:55:42,693 INFO L226 Difference]: Without dead ends: 1561 [2024-11-13 15:55:42,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=130, Invalid=601, Unknown=23, NotChecked=806, Total=1560 [2024-11-13 15:55:42,694 INFO L432 NwaCegarLoop]: 666 mSDtfsCounter, 710 mSDsluCounter, 5587 mSDsCounter, 0 mSdLazyCounter, 4708 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 6253 SdHoareTripleChecker+Invalid, 4719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:55:42,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 6253 Invalid, 4719 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 4708 Invalid, 0 Unknown, 0 Unchecked, 26.3s Time] [2024-11-13 15:55:42,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2024-11-13 15:55:42,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1187. [2024-11-13 15:55:42,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 758 states have (on average 1.6569920844327177) internal successors, (1256), 1177 states have internal predecessors, (1256), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-13 15:55:42,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1269 transitions. [2024-11-13 15:55:42,710 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1269 transitions. Word has length 128 [2024-11-13 15:55:42,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:55:42,710 INFO L471 AbstractCegarLoop]: Abstraction has 1187 states and 1269 transitions. [2024-11-13 15:55:42,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 6.9) internal successors, (138), 23 states have internal predecessors, (138), 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) [2024-11-13 15:55:42,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1269 transitions. [2024-11-13 15:55:42,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-13 15:55:42,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:55:42,712 INFO L215 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] [2024-11-13 15:55:42,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (42)] Ended with exit code 0 [2024-11-13 15:55:42,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-13 15:55:43,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:55:43,112 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:55:43,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:55:43,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1579905724, now seen corresponding path program 1 times [2024-11-13 15:55:43,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:55:43,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998927012] [2024-11-13 15:55:43,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:55:43,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:55:43,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:55:43,118 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:55:43,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-13 15:55:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:44,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-13 15:55:44,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:55:44,716 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:55:44,717 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 [2024-11-13 15:55:44,738 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 [2024-11-13 15:55:44,834 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 [2024-11-13 15:55:44,859 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 [2024-11-13 15:55:45,244 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 [2024-11-13 15:55:45,256 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 [2024-11-13 15:55:47,442 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:55:47,442 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 [2024-11-13 15:55:47,470 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 [2024-11-13 15:55:47,798 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:55:47,798 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 [2024-11-13 15:55:47,824 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 [2024-11-13 15:55:48,093 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:55:48,094 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 [2024-11-13 15:55:48,116 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 [2024-11-13 15:55:48,410 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:55:48,411 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 [2024-11-13 15:55:48,432 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 [2024-11-13 15:55:48,511 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 31 treesize of output 13 [2024-11-13 15:55:48,522 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 [2024-11-13 15:55:48,631 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:55:48,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:55:49,012 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8013 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8013) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8014 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8013 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8013) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8014) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:55:49,061 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_8014 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8013 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8013) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8014) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_8013 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8013) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse2) (bvadd (_ bv24 32) .cse2))))))) is different from false [2024-11-13 15:55:49,187 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8012 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8011 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8013 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8011) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8012) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8013) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8012 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8011 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8014 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8013 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8012))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8011) .cse2 v_ArrVal_8013) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_8014) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 15:55:50,535 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8012 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8011 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8010 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8009 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8014 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8013 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8010))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8012))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8009) .cse0 v_ArrVal_8011) .cse1 v_ArrVal_8013) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8014) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8012 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8011 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8010 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8009 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8013 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8010))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8009) .cse6 v_ArrVal_8011) (select (select (store .cse7 .cse6 v_ArrVal_8012) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8013))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse5) (bvadd (_ bv24 32) .cse5)))))) is different from false [2024-11-13 15:55:50,976 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_8012 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8011 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8010 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8009 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8013 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_8010))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_8009) .cse2 v_ArrVal_8011) (select (select (store .cse3 .cse2 v_ArrVal_8012) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_8013))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8012 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8011 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8010 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8009 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8014 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8013 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_8010))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_8012))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_8009) .cse5 v_ArrVal_8011) .cse6 v_ArrVal_8013) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_8014) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))) is different from false [2024-11-13 15:55:57,750 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8012 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8011 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8010 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8009 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8106 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8105 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8013 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8105))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_8010))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8106) .cse1 v_ArrVal_8009) .cse2 v_ArrVal_8011) (select (select (store .cse3 .cse2 v_ArrVal_8012) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_8013))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8012 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8011 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8010 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8009 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8106 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8105 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8014 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8013 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8105))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_8010))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_8012))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8106) .cse6 v_ArrVal_8009) .cse7 v_ArrVal_8011) .cse8 v_ArrVal_8013) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_8014) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-11-13 15:55:57,801 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:55:57,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998927012] [2024-11-13 15:55:57,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998927012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:55:57,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [181884585] [2024-11-13 15:55:57,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:55:57,801 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:55:57,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:55:57,803 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:55:57,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2024-11-13 15:56:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:16,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-13 15:56:16,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:56:16,479 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 [2024-11-13 15:56:18,799 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 [2024-11-13 15:56:19,015 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:56:19,015 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 [2024-11-13 15:56:19,139 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 [2024-11-13 15:56:19,180 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 [2024-11-13 15:56:19,976 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 [2024-11-13 15:56:20,017 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 [2024-11-13 15:56:28,830 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:56:28,830 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 [2024-11-13 15:56:28,912 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 [2024-11-13 15:56:29,762 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:56:29,762 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 [2024-11-13 15:56:29,847 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 [2024-11-13 15:56:30,596 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:56:30,596 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 [2024-11-13 15:56:30,694 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 [2024-11-13 15:56:31,403 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:56:31,403 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 [2024-11-13 15:56:31,499 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 [2024-11-13 15:56:31,822 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 [2024-11-13 15:56:31,868 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 [2024-11-13 15:56:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 15:56:31,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:56:32,354 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8612) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8611 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8612) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8611) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:56:32,520 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8611 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8612) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8611) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8612) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse2) (bvadd (_ bv24 32) .cse2))))))) is different from false [2024-11-13 15:56:32,781 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8609 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8610 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8610) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8609) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8612) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8609 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8611 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8610 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8609))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8610) .cse2 v_ArrVal_8612) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_8611) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 15:56:32,948 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8609 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8610 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_8610) (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_8609) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8612) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8609 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8611 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8610 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_8609))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_8610) .cse3 v_ArrVal_8612) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_8611) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-13 15:56:34,564 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8609 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8608 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8611 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8610 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8608))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8609))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8607) .cse0 v_ArrVal_8610) .cse1 v_ArrVal_8612) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8611) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8609 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8608 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8610 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8608))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8607) .cse6 v_ArrVal_8610) (select (select (store .cse7 .cse6 v_ArrVal_8609) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8612))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse5) (bvadd (_ bv24 32) .cse5)))))) is different from false [2024-11-13 15:56:45,433 WARN L286 SmtUtils]: Spent 5.28s on a formula simplification that was a NOOP. DAG size: 356 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-13 15:56:50,301 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8609 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8608 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8704 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8703 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8610 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8703))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_8608))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8704) .cse1 v_ArrVal_8607) .cse2 v_ArrVal_8610) (select (select (store .cse3 .cse2 v_ArrVal_8609) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_8612))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8609 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8608 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8704 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8703 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8612 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8611 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8610 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8703))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_8608))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_8609))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8704) .cse6 v_ArrVal_8607) .cse7 v_ArrVal_8610) .cse8 v_ArrVal_8612) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_8611) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-11-13 15:56:50,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [181884585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:50,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:56:50,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 12 [2024-11-13 15:56:50,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865860557] [2024-11-13 15:56:50,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:56:50,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 15:56:50,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:56:50,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 15:56:50,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=217, Unknown=27, NotChecked=492, Total=812 [2024-11-13 15:56:50,336 INFO L87 Difference]: Start difference. First operand 1187 states and 1269 transitions. Second operand has 13 states, 11 states have (on average 10.363636363636363) internal successors, (114), 13 states have internal predecessors, (114), 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) [2024-11-13 15:59:58,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:58,962 INFO L93 Difference]: Finished difference Result 1558 states and 1667 transitions. [2024-11-13 15:59:58,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:59:58,963 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.363636363636363) internal successors, (114), 13 states have internal predecessors, (114), 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 128 [2024-11-13 15:59:58,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:58,965 INFO L225 Difference]: With dead ends: 1558 [2024-11-13 15:59:58,965 INFO L226 Difference]: Without dead ends: 1558 [2024-11-13 15:59:58,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 250 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=137, Invalid=484, Unknown=27, NotChecked=684, Total=1332 [2024-11-13 15:59:58,966 INFO L432 NwaCegarLoop]: 671 mSDtfsCounter, 715 mSDsluCounter, 4414 mSDsCounter, 0 mSdLazyCounter, 6849 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 180.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 5085 SdHoareTripleChecker+Invalid, 6856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 6849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 183.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:58,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 5085 Invalid, 6856 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 6849 Invalid, 0 Unknown, 0 Unchecked, 183.3s Time] [2024-11-13 15:59:58,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2024-11-13 15:59:58,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1186. [2024-11-13 15:59:58,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 758 states have (on average 1.6556728232189974) internal successors, (1255), 1176 states have internal predecessors, (1255), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-13 15:59:58,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1268 transitions. [2024-11-13 15:59:58,982 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1268 transitions. Word has length 128 [2024-11-13 15:59:58,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:58,983 INFO L471 AbstractCegarLoop]: Abstraction has 1186 states and 1268 transitions. [2024-11-13 15:59:58,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.363636363636363) internal successors, (114), 13 states have internal predecessors, (114), 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) [2024-11-13 15:59:58,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1268 transitions. [2024-11-13 15:59:58,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-13 15:59:58,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:58,984 INFO L215 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] [2024-11-13 15:59:59,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (44)] Ended with exit code 0 [2024-11-13 15:59:59,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-13 15:59:59,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:59,385 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-13 15:59:59,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:59,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1595056965, now seen corresponding path program 1 times [2024-11-13 15:59:59,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:59:59,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291037532] [2024-11-13 15:59:59,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:59,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:59,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:59,389 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:59,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-13 16:00:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:00,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-13 16:00:00,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:03,635 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:00:03,635 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 [2024-11-13 16:00:03,975 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 [2024-11-13 16:00:09,426 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:00:09,426 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 [2024-11-13 16:00:10,557 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:00:10,558 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 31 treesize of output 32 [2024-11-13 16:00:11,682 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:00:11,683 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 [2024-11-13 16:00:12,775 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:00:12,775 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 31 treesize of output 32 [2024-11-13 16:00:13,880 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:00:13,880 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 44 treesize of output 43 [2024-11-13 16:00:14,751 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 [2024-11-13 16:00:15,938 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 16:00:15,939 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 [2024-11-13 16:00:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:00:16,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:17,957 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-13 16:00:17,957 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 [2024-11-13 16:00:18,048 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9176 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem41#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9176) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2024-11-13 16:00:18,186 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9176 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_9176) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-13 16:00:18,356 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9176 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9175 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_9175)) (.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_9176) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2024-11-13 16:00:18,475 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9176 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9175 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9175))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_9176) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-13 16:00:18,651 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9176 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9175 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9174 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_9174))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9175)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_9176) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-13 16:00:18,773 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9176 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9175 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9174 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9174))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9175)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_9176) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-13 16:00:18,950 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9176 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9175 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9174 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9173 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9173))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9174)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9175)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_9176) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-13 16:00:19,075 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9176 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9175 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9174 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9173 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9173))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9174)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9175)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_9176) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-13 16:00:23,039 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:00:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291037532] [2024-11-13 16:00:23,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291037532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:00:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [835969836] [2024-11-13 16:00:23,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:23,040 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:00:23,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:00:23,042 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:00:23,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_668cdda7-04a1-45b4-924b-c8ce4a1a26d1/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2024-11-13 16:00:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:50,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-13 16:00:50,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:50,363 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 [2024-11-13 16:00:53,399 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 16:00:53,399 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 [2024-11-13 16:00:54,275 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 [2024-11-13 16:00:56,528 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 [2024-11-13 16:01:12,608 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:01:12,608 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 [2024-11-13 16:01:14,995 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:01:14,996 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 [2024-11-13 16:01:16,651 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:01:16,651 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 [2024-11-13 16:01:18,288 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:01:18,288 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 [2024-11-13 16:01:20,192 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:01:20,193 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 [2024-11-13 16:01:20,474 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 [2024-11-13 16:01:22,337 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2024-11-13 16:01:22,337 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 [2024-11-13 16:01:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:01:22,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:01:23,425 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9697 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9697) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-13 16:01:23,532 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9697 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_9697) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 16:01:23,688 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9697 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9696 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_9696))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9697)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:01:23,797 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9697 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9696 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9696))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9697)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:01:23,959 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9695 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9697 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9696 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_9695))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9696)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9697)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:01:24,071 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9695 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9697 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9696 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9695))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9696)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9697)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:01:24,233 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9695 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9694 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9697 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9696 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9694))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9695)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9696)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9697)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:01:24,348 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9695 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9694 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9697 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9696 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9694))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9695)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9696)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9697)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:01:28,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [835969836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:01:28,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:01:28,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2024-11-13 16:01:28,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425019248] [2024-11-13 16:01:28,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:01:28,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 16:01:28,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:01:28,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 16:01:28,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=711, Unknown=22, NotChecked=1104, Total=1980 [2024-11-13 16:01:28,519 INFO L87 Difference]: Start difference. First operand 1186 states and 1268 transitions. Second operand has 26 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 25 states have internal predecessors, (146), 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)