./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB --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 22840dbbc7fdeff8c5ae44a2e4ee4ab6a60b4cab9f47ba8847305b912adb9a2c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:55:54,244 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:55:54,342 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 04:55:54,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:55:54,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:55:54,388 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:55:54,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:55:54,389 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:55:54,389 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:55:54,390 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:55:54,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:55:54,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:55:54,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:55:54,391 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:55:54,392 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:55:54,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:55:54,392 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:55:54,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:55:54,392 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:55:54,392 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:55:54,392 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:55:54,393 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:55:54,393 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:55:54,393 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:55:54,393 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:55:54,393 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:55:54,393 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:55:54,393 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:55:54,393 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:55:54,393 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:55:54,394 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:55:54,394 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:55:54,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:55:54,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:55:54,394 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:55:54,394 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:55:54,394 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:55:54,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:55:54,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:55:54,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:55:54,394 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:55:54,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:55:54,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:55:54,395 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:55:54,395 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:55:54,395 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:55:54,395 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:55:54,395 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_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 22840dbbc7fdeff8c5ae44a2e4ee4ab6a60b4cab9f47ba8847305b912adb9a2c [2024-11-28 04:55:54,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:55:54,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:55:54,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:55:54,716 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:55:54,717 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:55:54,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i [2024-11-28 04:55:57,610 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/data/ad96e423a/f119f88833254231a9e50b7ae2b3e807/FLAG2bd65d733 [2024-11-28 04:55:57,970 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:55:57,971 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i [2024-11-28 04:55:57,990 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/data/ad96e423a/f119f88833254231a9e50b7ae2b3e807/FLAG2bd65d733 [2024-11-28 04:55:58,010 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/data/ad96e423a/f119f88833254231a9e50b7ae2b3e807 [2024-11-28 04:55:58,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:55:58,015 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:55:58,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:55:58,017 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:55:58,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:55:58,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:58" (1/1) ... [2024-11-28 04:55:58,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@404c514e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:58, skipping insertion in model container [2024-11-28 04:55:58,024 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:55:58" (1/1) ... [2024-11-28 04:55:58,105 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:55:58,532 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,570 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,576 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,584 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,598 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,632 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,635 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,638 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,644 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,673 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,674 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,676 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,677 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,700 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,700 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,703 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,703 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,719 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,720 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,722 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,722 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,738 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,739 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,741 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,741 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,743 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,745 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,746 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,747 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,748 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,752 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:55:58,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:55:58,798 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) [2024-11-28 04:55:58,798 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4868961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:55:58, skipping insertion in model container [2024-11-28 04:55:58,798 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:55:58,798 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-28 04:55:58,800 INFO L158 Benchmark]: Toolchain (without parser) took 784.43ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 61.3MB in the end (delta: 28.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 04:55:58,800 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:55:58,800 INFO L158 Benchmark]: CACSL2BoogieTranslator took 781.89ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 61.3MB in the end (delta: 28.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 04:55:58,801 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 781.89ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 61.3MB in the end (delta: 28.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 757]: 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_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB --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 22840dbbc7fdeff8c5ae44a2e4ee4ab6a60b4cab9f47ba8847305b912adb9a2c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:56:01,177 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:56:01,296 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 04:56:01,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:56:01,308 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:56:01,346 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:56:01,348 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:56:01,348 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:56:01,348 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:56:01,349 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:56:01,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:56:01,350 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:56:01,351 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:56:01,351 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:56:01,351 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:56:01,351 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:56:01,351 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:56:01,352 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:56:01,352 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:56:01,352 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:56:01,352 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:56:01,352 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:56:01,352 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:56:01,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:56:01,353 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:56:01,353 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 04:56:01,353 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 04:56:01,353 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:56:01,353 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:56:01,353 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:56:01,353 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:56:01,354 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:56:01,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:56:01,355 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:56:01,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:56:01,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:56:01,355 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:56:01,355 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:56:01,355 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:56:01,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:56:01,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:56:01,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:56:01,355 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:56:01,355 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 04:56:01,355 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 04:56:01,356 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:56:01,356 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:56:01,356 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:56:01,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:56:01,356 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_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 22840dbbc7fdeff8c5ae44a2e4ee4ab6a60b4cab9f47ba8847305b912adb9a2c [2024-11-28 04:56:01,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:56:01,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:56:01,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:56:01,698 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:56:01,698 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:56:01,699 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i [2024-11-28 04:56:04,696 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/data/2a57c9a74/9904f09ff5994108a46c86225eeb8411/FLAG95b22f996 [2024-11-28 04:56:05,115 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:56:05,116 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-2.i [2024-11-28 04:56:05,145 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/data/2a57c9a74/9904f09ff5994108a46c86225eeb8411/FLAG95b22f996 [2024-11-28 04:56:05,167 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/data/2a57c9a74/9904f09ff5994108a46c86225eeb8411 [2024-11-28 04:56:05,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:56:05,172 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:56:05,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:56:05,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:56:05,178 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:56:05,179 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:56:05" (1/1) ... [2024-11-28 04:56:05,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5716b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:05, skipping insertion in model container [2024-11-28 04:56:05,182 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:56:05" (1/1) ... [2024-11-28 04:56:05,245 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:56:05,754 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,807 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,817 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,825 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,839 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,891 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,894 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,897 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,904 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,934 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,935 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,938 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,938 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,958 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,958 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,961 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,962 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,987 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,987 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,990 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:05,990 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,007 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,009 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,013 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,013 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,018 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,021 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,022 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,027 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,028 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,036 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:56:06,071 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-28 04:56:06,090 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:56:06,137 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,165 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,167 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,169 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,196 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,226 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,227 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,231 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,234 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,260 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,261 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,262 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,262 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,271 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,272 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,273 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,273 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,283 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,283 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,285 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,285 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,294 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,294 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,296 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,296 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,297 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,299 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,299 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,300 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,300 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,303 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:56:06,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:56:06,311 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:56:06,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:56:06,526 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:56:06,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:06 WrapperNode [2024-11-28 04:56:06,527 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:56:06,528 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:56:06,528 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:56:06,528 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:56:06,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:06" (1/1) ... [2024-11-28 04:56:06,582 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:06" (1/1) ... [2024-11-28 04:56:06,685 INFO L138 Inliner]: procedures = 180, calls = 558, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2353 [2024-11-28 04:56:06,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:56:06,686 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:56:06,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:56:06,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:56:06,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:06" (1/1) ... [2024-11-28 04:56:06,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:06" (1/1) ... [2024-11-28 04:56:06,724 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:06" (1/1) ... [2024-11-28 04:56:06,944 INFO L175 MemorySlicer]: Split 528 memory accesses to 3 slices as follows [2, 106, 420]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 94 writes are split as follows [0, 4, 90]. [2024-11-28 04:56:06,944 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:06" (1/1) ... [2024-11-28 04:56:06,944 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:06" (1/1) ... [2024-11-28 04:56:07,048 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:06" (1/1) ... [2024-11-28 04:56:07,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:06" (1/1) ... [2024-11-28 04:56:07,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:06" (1/1) ... [2024-11-28 04:56:07,089 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:06" (1/1) ... [2024-11-28 04:56:07,105 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:06" (1/1) ... [2024-11-28 04:56:07,131 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:56:07,132 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:56:07,133 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:56:07,133 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:56:07,134 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:06" (1/1) ... [2024-11-28 04:56:07,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:56:07,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:07,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:56:07,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:56:07,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-28 04:56:07,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-28 04:56:07,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-28 04:56:07,202 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-28 04:56:07,202 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-28 04:56:07,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-28 04:56:07,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-28 04:56:07,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-28 04:56:07,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:56:07,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:56:07,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 04:56:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 04:56:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-28 04:56:07,203 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 04:56:07,203 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 04:56:07,203 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-28 04:56:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:56:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:56:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 04:56:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 04:56:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 04:56:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:56:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 04:56:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 04:56:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 04:56:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:56:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 04:56:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-28 04:56:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-28 04:56:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 04:56:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 04:56:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-28 04:56:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:56:07,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:56:07,586 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:56:07,588 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:56:07,651 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 04:56:07,675 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 04:56:07,696 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 04:56:16,901 INFO L? ?]: Removed 2231 outVars from TransFormulas that were not future-live. [2024-11-28 04:56:16,901 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:56:16,974 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:56:16,974 INFO L312 CfgBuilder]: Removed 90 assume(true) statements. [2024-11-28 04:56:16,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:56:16 BoogieIcfgContainer [2024-11-28 04:56:16,974 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:56:16,981 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:56:16,982 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:56:17,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:56:17,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:56:05" (1/3) ... [2024-11-28 04:56:17,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea7dce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:56:17, skipping insertion in model container [2024-11-28 04:56:17,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:06" (2/3) ... [2024-11-28 04:56:17,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea7dce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:56:17, skipping insertion in model container [2024-11-28 04:56:17,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:56:16" (3/3) ... [2024-11-28 04:56:17,014 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test10-2.i [2024-11-28 04:56:17,030 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:56:17,032 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_test10-2.i that has 6 procedures, 2287 locations, 1 initial locations, 89 loop locations, and 1091 error locations. [2024-11-28 04:56:17,106 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:56:17,122 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;@34db697, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:56:17,122 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1091 error locations. [2024-11-28 04:56:17,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 2277 states, 1174 states have (on average 2.1873935264054514) internal successors, (2568), 2263 states have internal predecessors, (2568), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:56:17,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 04:56:17,136 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:17,137 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 04:56:17,137 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:56:17,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:17,142 INFO L85 PathProgramCache]: Analyzing trace with hash 84472, now seen corresponding path program 1 times [2024-11-28 04:56:17,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:56:17,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725203111] [2024-11-28 04:56:17,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:17,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:17,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:17,156 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:17,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:56:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:17,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:56:17,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:17,451 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 [2024-11-28 04:56:17,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:17,480 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:56:17,481 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:56:17,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725203111] [2024-11-28 04:56:17,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725203111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:17,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:17,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:56:17,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817378381] [2024-11-28 04:56:17,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:17,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:56:17,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:56:17,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:56:17,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:17,517 INFO L87 Difference]: Start difference. First operand has 2277 states, 1174 states have (on average 2.1873935264054514) internal successors, (2568), 2263 states have internal predecessors, (2568), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:56:21,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:21,897 INFO L93 Difference]: Finished difference Result 2941 states and 3125 transitions. [2024-11-28 04:56:21,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:56:21,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-28 04:56:21,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:21,923 INFO L225 Difference]: With dead ends: 2941 [2024-11-28 04:56:21,923 INFO L226 Difference]: Without dead ends: 2939 [2024-11-28 04:56:21,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:21,928 INFO L435 NwaCegarLoop]: 1401 mSDtfsCounter, 2143 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2153 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:21,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2153 Valid, 1879 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 04:56:21,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2024-11-28 04:56:22,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 2421. [2024-11-28 04:56:22,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 1346 states have (on average 2.0222882615156017) internal successors, (2722), 2405 states have internal predecessors, (2722), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 04:56:22,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 2754 transitions. [2024-11-28 04:56:22,141 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 2754 transitions. Word has length 3 [2024-11-28 04:56:22,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:22,143 INFO L471 AbstractCegarLoop]: Abstraction has 2421 states and 2754 transitions. [2024-11-28 04:56:22,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:56:22,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 2754 transitions. [2024-11-28 04:56:22,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 04:56:22,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:22,144 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 04:56:22,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:56:22,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:22,349 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:56:22,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:22,350 INFO L85 PathProgramCache]: Analyzing trace with hash 84473, now seen corresponding path program 1 times [2024-11-28 04:56:22,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:56:22,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995969935] [2024-11-28 04:56:22,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:22,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:22,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:22,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:22,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:56:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:22,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:56:22,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:22,569 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 [2024-11-28 04:56:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:22,586 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:56:22,587 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:56:22,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995969935] [2024-11-28 04:56:22,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995969935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:22,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:22,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:56:22,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863792015] [2024-11-28 04:56:22,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:22,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:56:22,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:56:22,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:56:22,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:22,589 INFO L87 Difference]: Start difference. First operand 2421 states and 2754 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:56:28,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:28,605 INFO L93 Difference]: Finished difference Result 3223 states and 3636 transitions. [2024-11-28 04:56:28,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:56:28,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-28 04:56:28,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:28,618 INFO L225 Difference]: With dead ends: 3223 [2024-11-28 04:56:28,618 INFO L226 Difference]: Without dead ends: 3223 [2024-11-28 04:56:28,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:28,620 INFO L435 NwaCegarLoop]: 2039 mSDtfsCounter, 876 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:28,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 3347 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-28 04:56:28,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3223 states. [2024-11-28 04:56:28,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 2894. [2024-11-28 04:56:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2894 states, 1817 states have (on average 1.9796367638965326) internal successors, (3597), 2875 states have internal predecessors, (3597), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:56:28,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2894 states to 2894 states and 3635 transitions. [2024-11-28 04:56:28,729 INFO L78 Accepts]: Start accepts. Automaton has 2894 states and 3635 transitions. Word has length 3 [2024-11-28 04:56:28,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:28,729 INFO L471 AbstractCegarLoop]: Abstraction has 2894 states and 3635 transitions. [2024-11-28 04:56:28,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:56:28,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2894 states and 3635 transitions. [2024-11-28 04:56:28,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:56:28,730 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:28,730 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:28,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:56:28,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:28,930 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:56:28,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash 327660049, now seen corresponding path program 1 times [2024-11-28 04:56:28,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:56:28,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431128022] [2024-11-28 04:56:28,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:28,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:28,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:28,934 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:28,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:56:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:29,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:56:29,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:29,141 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 [2024-11-28 04:56:29,217 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-28 04:56:29,217 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 [2024-11-28 04:56:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:29,326 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:56:29,326 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:56:29,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431128022] [2024-11-28 04:56:29,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431128022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:29,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:29,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:56:29,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820618731] [2024-11-28 04:56:29,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:29,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:56:29,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:56:29,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:56:29,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:56:29,327 INFO L87 Difference]: Start difference. First operand 2894 states and 3635 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) [2024-11-28 04:56:39,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:39,290 INFO L93 Difference]: Finished difference Result 4582 states and 5108 transitions. [2024-11-28 04:56:39,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:56:39,291 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 [2024-11-28 04:56:39,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:39,311 INFO L225 Difference]: With dead ends: 4582 [2024-11-28 04:56:39,311 INFO L226 Difference]: Without dead ends: 4582 [2024-11-28 04:56:39,312 INFO L434 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 [2024-11-28 04:56:39,315 INFO L435 NwaCegarLoop]: 2308 mSDtfsCounter, 2332 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 3136 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 4918 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:39,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2338 Valid, 4918 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3136 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2024-11-28 04:56:39,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4582 states. [2024-11-28 04:56:39,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4582 to 3181. [2024-11-28 04:56:39,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3181 states, 2104 states have (on average 1.9757604562737643) internal successors, (4157), 3162 states have internal predecessors, (4157), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:56:39,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 4195 transitions. [2024-11-28 04:56:39,425 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 4195 transitions. Word has length 8 [2024-11-28 04:56:39,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:39,425 INFO L471 AbstractCegarLoop]: Abstraction has 3181 states and 4195 transitions. [2024-11-28 04:56:39,428 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) [2024-11-28 04:56:39,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 4195 transitions. [2024-11-28 04:56:39,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:56:39,428 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:39,428 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:39,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:56:39,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:39,629 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:56:39,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:39,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1567526949, now seen corresponding path program 1 times [2024-11-28 04:56:39,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:56:39,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2093428621] [2024-11-28 04:56:39,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:39,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:39,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:39,635 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:39,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:56:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:39,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:56:39,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:39,848 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 [2024-11-28 04:56:39,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:39,862 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:56:39,863 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:56:39,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093428621] [2024-11-28 04:56:39,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093428621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:39,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:39,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:56:39,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042445120] [2024-11-28 04:56:39,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:39,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:56:39,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:56:39,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:56:39,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:39,864 INFO L87 Difference]: Start difference. First operand 3181 states and 4195 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) [2024-11-28 04:56:43,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:43,988 INFO L93 Difference]: Finished difference Result 3894 states and 4947 transitions. [2024-11-28 04:56:43,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:56:43,988 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 [2024-11-28 04:56:43,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:43,997 INFO L225 Difference]: With dead ends: 3894 [2024-11-28 04:56:43,997 INFO L226 Difference]: Without dead ends: 3894 [2024-11-28 04:56:43,998 INFO L434 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 [2024-11-28 04:56:43,998 INFO L435 NwaCegarLoop]: 2226 mSDtfsCounter, 1921 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:43,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1931 Valid, 2903 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 04:56:44,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3894 states. [2024-11-28 04:56:44,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3894 to 3089. [2024-11-28 04:56:44,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3089 states, 2104 states have (on average 1.9120722433460076) internal successors, (4023), 3070 states have internal predecessors, (4023), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:56:44,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3089 states to 3089 states and 4061 transitions. [2024-11-28 04:56:44,086 INFO L78 Accepts]: Start accepts. Automaton has 3089 states and 4061 transitions. Word has length 9 [2024-11-28 04:56:44,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:44,086 INFO L471 AbstractCegarLoop]: Abstraction has 3089 states and 4061 transitions. [2024-11-28 04:56:44,087 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) [2024-11-28 04:56:44,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3089 states and 4061 transitions. [2024-11-28 04:56:44,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:56:44,087 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:44,087 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:44,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:56:44,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:44,288 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:56:44,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:44,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1567526950, now seen corresponding path program 1 times [2024-11-28 04:56:44,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:56:44,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401297697] [2024-11-28 04:56:44,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:44,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:44,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:44,293 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:44,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:56:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:44,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:56:44,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:44,514 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 [2024-11-28 04:56:44,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:44,552 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:56:44,552 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:56:44,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401297697] [2024-11-28 04:56:44,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401297697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:44,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:44,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:56:44,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55866070] [2024-11-28 04:56:44,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:44,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:56:44,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:56:44,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:56:44,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:44,553 INFO L87 Difference]: Start difference. First operand 3089 states and 4061 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) [2024-11-28 04:56:50,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:50,741 INFO L93 Difference]: Finished difference Result 4703 states and 6163 transitions. [2024-11-28 04:56:50,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:56:50,742 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 [2024-11-28 04:56:50,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:50,752 INFO L225 Difference]: With dead ends: 4703 [2024-11-28 04:56:50,753 INFO L226 Difference]: Without dead ends: 4703 [2024-11-28 04:56:50,753 INFO L434 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 [2024-11-28 04:56:50,753 INFO L435 NwaCegarLoop]: 2583 mSDtfsCounter, 1424 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 3691 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:50,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 3691 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-28 04:56:50,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4703 states. [2024-11-28 04:56:50,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4703 to 3256. [2024-11-28 04:56:50,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3256 states, 2281 states have (on average 1.8952213941253837) internal successors, (4323), 3237 states have internal predecessors, (4323), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:56:50,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3256 states to 3256 states and 4361 transitions. [2024-11-28 04:56:50,821 INFO L78 Accepts]: Start accepts. Automaton has 3256 states and 4361 transitions. Word has length 9 [2024-11-28 04:56:50,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:50,822 INFO L471 AbstractCegarLoop]: Abstraction has 3256 states and 4361 transitions. [2024-11-28 04:56:50,822 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) [2024-11-28 04:56:50,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3256 states and 4361 transitions. [2024-11-28 04:56:50,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:56:50,823 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:50,823 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:50,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:56:51,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:51,027 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr638REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:56:51,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:51,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2037202196, now seen corresponding path program 1 times [2024-11-28 04:56:51,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:56:51,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044083490] [2024-11-28 04:56:51,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:51,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:51,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:51,031 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:51,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:56:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:51,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:56:51,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:51,259 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 [2024-11-28 04:56:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:51,305 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:56:51,305 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:56:51,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044083490] [2024-11-28 04:56:51,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044083490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:51,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:51,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:56:51,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884185218] [2024-11-28 04:56:51,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:51,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:56:51,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:56:51,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:56:51,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:56:51,308 INFO L87 Difference]: Start difference. First operand 3256 states and 4361 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-28 04:56:56,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:56,479 INFO L93 Difference]: Finished difference Result 3722 states and 4677 transitions. [2024-11-28 04:56:56,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:56:56,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 04:56:56,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:56,487 INFO L225 Difference]: With dead ends: 3722 [2024-11-28 04:56:56,487 INFO L226 Difference]: Without dead ends: 3722 [2024-11-28 04:56:56,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:56:56,488 INFO L435 NwaCegarLoop]: 1349 mSDtfsCounter, 2106 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2116 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:56,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2116 Valid, 3027 Invalid, 2372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-28 04:56:56,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2024-11-28 04:56:56,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 3233. [2024-11-28 04:56:56,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3233 states, 2281 states have (on average 1.875054800526085) internal successors, (4277), 3214 states have internal predecessors, (4277), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:56:56,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 4315 transitions. [2024-11-28 04:56:56,563 INFO L78 Accepts]: Start accepts. Automaton has 3233 states and 4315 transitions. Word has length 11 [2024-11-28 04:56:56,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:56,563 INFO L471 AbstractCegarLoop]: Abstraction has 3233 states and 4315 transitions. [2024-11-28 04:56:56,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-28 04:56:56,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3233 states and 4315 transitions. [2024-11-28 04:56:56,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:56:56,564 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:56,564 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:56,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:56:56,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:56,765 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr639REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:56:56,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:56,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2037202195, now seen corresponding path program 1 times [2024-11-28 04:56:56,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:56:56,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512600698] [2024-11-28 04:56:56,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:56,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:56,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:56,769 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:56,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:56:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:56,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:56:56,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:56,984 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 [2024-11-28 04:56:57,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:56:57,100 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:56:57,100 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:56:57,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512600698] [2024-11-28 04:56:57,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512600698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:57,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:57,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:56:57,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914758818] [2024-11-28 04:56:57,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:57,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:56:57,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:56:57,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:56:57,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:56:57,101 INFO L87 Difference]: Start difference. First operand 3233 states and 4315 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-28 04:57:04,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:04,775 INFO L93 Difference]: Finished difference Result 3983 states and 5137 transitions. [2024-11-28 04:57:04,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:57:04,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 04:57:04,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:04,787 INFO L225 Difference]: With dead ends: 3983 [2024-11-28 04:57:04,787 INFO L226 Difference]: Without dead ends: 3983 [2024-11-28 04:57:04,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:57:04,788 INFO L435 NwaCegarLoop]: 1944 mSDtfsCounter, 857 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 4327 SdHoareTripleChecker+Invalid, 2475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:04,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 4327 Invalid, 2475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-28 04:57:04,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2024-11-28 04:57:04,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3282. [2024-11-28 04:57:04,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3282 states, 2330 states have (on average 1.8622317596566524) internal successors, (4339), 3263 states have internal predecessors, (4339), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:57:04,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3282 states to 3282 states and 4377 transitions. [2024-11-28 04:57:04,862 INFO L78 Accepts]: Start accepts. Automaton has 3282 states and 4377 transitions. Word has length 11 [2024-11-28 04:57:04,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:04,862 INFO L471 AbstractCegarLoop]: Abstraction has 3282 states and 4377 transitions. [2024-11-28 04:57:04,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-28 04:57:04,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3282 states and 4377 transitions. [2024-11-28 04:57:04,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 04:57:04,863 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:04,863 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:04,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:57:05,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:05,063 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr663REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:57:05,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:05,064 INFO L85 PathProgramCache]: Analyzing trace with hash 753951524, now seen corresponding path program 1 times [2024-11-28 04:57:05,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:57:05,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742919002] [2024-11-28 04:57:05,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:57:05,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:05,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:05,066 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:05,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:57:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:05,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:57:05,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:57:05,302 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:57:05,302 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:57:05,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742919002] [2024-11-28 04:57:05,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742919002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:57:05,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:57:05,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:57:05,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540206640] [2024-11-28 04:57:05,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:57:05,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:57:05,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:57:05,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:57:05,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:57:05,303 INFO L87 Difference]: Start difference. First operand 3282 states and 4377 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-28 04:57:05,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:05,419 INFO L93 Difference]: Finished difference Result 3204 states and 4256 transitions. [2024-11-28 04:57:05,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:57:05,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-11-28 04:57:05,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:05,437 INFO L225 Difference]: With dead ends: 3204 [2024-11-28 04:57:05,438 INFO L226 Difference]: Without dead ends: 3204 [2024-11-28 04:57:05,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:57:05,440 INFO L435 NwaCegarLoop]: 2182 mSDtfsCounter, 45 mSDsluCounter, 4341 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6523 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:05,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6523 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:57:05,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2024-11-28 04:57:05,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 3198. [2024-11-28 04:57:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3198 states, 2265 states have (on average 1.8596026490066224) internal successors, (4212), 3179 states have internal predecessors, (4212), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:57:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 4250 transitions. [2024-11-28 04:57:05,496 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 4250 transitions. Word has length 13 [2024-11-28 04:57:05,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:05,496 INFO L471 AbstractCegarLoop]: Abstraction has 3198 states and 4250 transitions. [2024-11-28 04:57:05,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-28 04:57:05,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 4250 transitions. [2024-11-28 04:57:05,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 04:57:05,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:05,497 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:05,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:57:05,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:05,698 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr324REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:57:05,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:05,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1773122699, now seen corresponding path program 1 times [2024-11-28 04:57:05,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:57:05,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990860754] [2024-11-28 04:57:05,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:57:05,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:05,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:05,700 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:05,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:57:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:05,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:57:05,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:05,955 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 [2024-11-28 04:57:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:57:06,009 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:57:06,010 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:57:06,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990860754] [2024-11-28 04:57:06,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990860754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:57:06,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:57:06,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:57:06,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322519392] [2024-11-28 04:57:06,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:57:06,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:57:06,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:57:06,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:57:06,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:57:06,011 INFO L87 Difference]: Start difference. First operand 3198 states and 4250 transitions. Second operand has 4 states, 3 states have (on average 7.0) 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) [2024-11-28 04:57:11,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:11,546 INFO L93 Difference]: Finished difference Result 3888 states and 4939 transitions. [2024-11-28 04:57:11,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:57:11,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) 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 [2024-11-28 04:57:11,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:11,555 INFO L225 Difference]: With dead ends: 3888 [2024-11-28 04:57:11,556 INFO L226 Difference]: Without dead ends: 3888 [2024-11-28 04:57:11,556 INFO L434 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 [2024-11-28 04:57:11,556 INFO L435 NwaCegarLoop]: 2076 mSDtfsCounter, 1884 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 2727 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 4304 SdHoareTripleChecker+Invalid, 2758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:11,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 4304 Invalid, 2758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2727 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-28 04:57:11,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2024-11-28 04:57:11,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3175. [2024-11-28 04:57:11,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3175 states, 2265 states have (on average 1.8189845474613686) internal successors, (4120), 3156 states have internal predecessors, (4120), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:57:11,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3175 states to 3175 states and 4158 transitions. [2024-11-28 04:57:11,599 INFO L78 Accepts]: Start accepts. Automaton has 3175 states and 4158 transitions. Word has length 21 [2024-11-28 04:57:11,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:11,599 INFO L471 AbstractCegarLoop]: Abstraction has 3175 states and 4158 transitions. [2024-11-28 04:57:11,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) 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) [2024-11-28 04:57:11,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3175 states and 4158 transitions. [2024-11-28 04:57:11,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 04:57:11,600 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:11,600 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:11,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:57:11,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:11,805 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr325REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:57:11,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:11,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1773122698, now seen corresponding path program 1 times [2024-11-28 04:57:11,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:57:11,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462391224] [2024-11-28 04:57:11,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:57:11,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:11,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:11,807 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:11,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:57:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:12,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:57:12,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:12,064 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 [2024-11-28 04:57:12,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:57:12,207 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:57:12,207 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:57:12,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462391224] [2024-11-28 04:57:12,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462391224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:57:12,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:57:12,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:57:12,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582480593] [2024-11-28 04:57:12,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:57:12,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:57:12,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:57:12,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:57:12,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:57:12,209 INFO L87 Difference]: Start difference. First operand 3175 states and 4158 transitions. Second operand has 4 states, 3 states have (on average 7.0) 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) [2024-11-28 04:57:20,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:20,485 INFO L93 Difference]: Finished difference Result 4601 states and 5919 transitions. [2024-11-28 04:57:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:57:20,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) 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 [2024-11-28 04:57:20,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:20,492 INFO L225 Difference]: With dead ends: 4601 [2024-11-28 04:57:20,492 INFO L226 Difference]: Without dead ends: 4601 [2024-11-28 04:57:20,492 INFO L434 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 [2024-11-28 04:57:20,493 INFO L435 NwaCegarLoop]: 2431 mSDtfsCounter, 1461 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 2860 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 5123 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:20,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 5123 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2860 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-28 04:57:20,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2024-11-28 04:57:20,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 3291. [2024-11-28 04:57:20,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3291 states, 2381 states have (on average 1.7891642167156656) internal successors, (4260), 3272 states have internal predecessors, (4260), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:57:20,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 4298 transitions. [2024-11-28 04:57:20,534 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 4298 transitions. Word has length 21 [2024-11-28 04:57:20,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:20,534 INFO L471 AbstractCegarLoop]: Abstraction has 3291 states and 4298 transitions. [2024-11-28 04:57:20,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) 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) [2024-11-28 04:57:20,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 4298 transitions. [2024-11-28 04:57:20,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 04:57:20,535 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:20,535 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:20,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:57:20,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:20,736 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:57:20,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:20,736 INFO L85 PathProgramCache]: Analyzing trace with hash -2007176747, now seen corresponding path program 1 times [2024-11-28 04:57:20,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:57:20,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148529858] [2024-11-28 04:57:20,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:57:20,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:20,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:20,738 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:20,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:57:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:20,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:57:20,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:20,982 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 [2024-11-28 04:57:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:57:21,038 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:57:21,038 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:57:21,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148529858] [2024-11-28 04:57:21,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148529858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:57:21,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:57:21,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:57:21,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445356151] [2024-11-28 04:57:21,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:57:21,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:57:21,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:57:21,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:57:21,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:57:21,040 INFO L87 Difference]: Start difference. First operand 3291 states and 4298 transitions. Second operand has 4 states, 3 states have (on average 7.0) 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) [2024-11-28 04:57:26,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:26,380 INFO L93 Difference]: Finished difference Result 3973 states and 5025 transitions. [2024-11-28 04:57:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:57:26,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) 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 [2024-11-28 04:57:26,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:26,388 INFO L225 Difference]: With dead ends: 3973 [2024-11-28 04:57:26,389 INFO L226 Difference]: Without dead ends: 3973 [2024-11-28 04:57:26,389 INFO L434 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 [2024-11-28 04:57:26,389 INFO L435 NwaCegarLoop]: 2076 mSDtfsCounter, 1861 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 2681 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1871 SdHoareTripleChecker+Valid, 4304 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:26,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1871 Valid, 4304 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2681 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-28 04:57:26,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3973 states. [2024-11-28 04:57:26,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3973 to 3268. [2024-11-28 04:57:26,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3268 states, 2381 states have (on average 1.7698446031079378) internal successors, (4214), 3249 states have internal predecessors, (4214), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:57:26,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3268 states to 3268 states and 4252 transitions. [2024-11-28 04:57:26,455 INFO L78 Accepts]: Start accepts. Automaton has 3268 states and 4252 transitions. Word has length 21 [2024-11-28 04:57:26,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:26,457 INFO L471 AbstractCegarLoop]: Abstraction has 3268 states and 4252 transitions. [2024-11-28 04:57:26,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) 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) [2024-11-28 04:57:26,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3268 states and 4252 transitions. [2024-11-28 04:57:26,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 04:57:26,460 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:26,460 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:26,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:57:26,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:26,661 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:57:26,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:26,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2007176746, now seen corresponding path program 1 times [2024-11-28 04:57:26,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:57:26,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232803714] [2024-11-28 04:57:26,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:57:26,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:26,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:26,664 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:26,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:57:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:26,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:57:26,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:26,933 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 [2024-11-28 04:57:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:57:27,046 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:57:27,046 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:57:27,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232803714] [2024-11-28 04:57:27,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232803714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:57:27,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:57:27,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:57:27,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932883294] [2024-11-28 04:57:27,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:57:27,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:57:27,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:57:27,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:57:27,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:57:27,048 INFO L87 Difference]: Start difference. First operand 3268 states and 4252 transitions. Second operand has 4 states, 3 states have (on average 7.0) 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) [2024-11-28 04:57:35,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:35,336 INFO L93 Difference]: Finished difference Result 4694 states and 6013 transitions. [2024-11-28 04:57:35,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:57:35,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) 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 [2024-11-28 04:57:35,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:35,346 INFO L225 Difference]: With dead ends: 4694 [2024-11-28 04:57:35,346 INFO L226 Difference]: Without dead ends: 4694 [2024-11-28 04:57:35,346 INFO L434 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 [2024-11-28 04:57:35,346 INFO L435 NwaCegarLoop]: 2408 mSDtfsCounter, 1438 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 2859 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 5077 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:35,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 5077 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2859 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2024-11-28 04:57:35,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2024-11-28 04:57:35,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 3384. [2024-11-28 04:57:35,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3384 states, 2497 states have (on average 1.7436924309171005) internal successors, (4354), 3365 states have internal predecessors, (4354), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:57:35,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3384 states to 3384 states and 4392 transitions. [2024-11-28 04:57:35,408 INFO L78 Accepts]: Start accepts. Automaton has 3384 states and 4392 transitions. Word has length 21 [2024-11-28 04:57:35,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:35,408 INFO L471 AbstractCegarLoop]: Abstraction has 3384 states and 4392 transitions. [2024-11-28 04:57:35,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) 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) [2024-11-28 04:57:35,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3384 states and 4392 transitions. [2024-11-28 04:57:35,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 04:57:35,409 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:35,410 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:35,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 04:57:35,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:35,611 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr325REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:57:35,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:35,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1475899896, now seen corresponding path program 1 times [2024-11-28 04:57:35,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:57:35,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945989450] [2024-11-28 04:57:35,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:57:35,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:35,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:35,614 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:35,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:57:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:35,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:57:35,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:35,945 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 [2024-11-28 04:57:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:57:36,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:57:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:57:36,863 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:57:36,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945989450] [2024-11-28 04:57:36,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945989450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:57:36,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:57:36,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-28 04:57:36,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204180592] [2024-11-28 04:57:36,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:57:36,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:57:36,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:57:36,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:57:36,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:57:36,865 INFO L87 Difference]: Start difference. First operand 3384 states and 4392 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 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) [2024-11-28 04:57:56,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:56,747 INFO L93 Difference]: Finished difference Result 5087 states and 6549 transitions. [2024-11-28 04:57:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:57:56,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 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 40 [2024-11-28 04:57:56,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:56,751 INFO L225 Difference]: With dead ends: 5087 [2024-11-28 04:57:56,751 INFO L226 Difference]: Without dead ends: 5087 [2024-11-28 04:57:56,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:57:56,752 INFO L435 NwaCegarLoop]: 2403 mSDtfsCounter, 2198 mSDsluCounter, 5413 mSDsCounter, 0 mSdLazyCounter, 5257 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2204 SdHoareTripleChecker+Valid, 7816 SdHoareTripleChecker+Invalid, 5286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:56,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2204 Valid, 7816 Invalid, 5286 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 5257 Invalid, 0 Unknown, 0 Unchecked, 19.5s Time] [2024-11-28 04:57:56,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5087 states. [2024-11-28 04:57:56,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5087 to 3550. [2024-11-28 04:57:56,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 2663 states have (on average 1.7228689447990988) internal successors, (4588), 3531 states have internal predecessors, (4588), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:57:56,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 4626 transitions. [2024-11-28 04:57:56,796 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 4626 transitions. Word has length 40 [2024-11-28 04:57:56,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:56,796 INFO L471 AbstractCegarLoop]: Abstraction has 3550 states and 4626 transitions. [2024-11-28 04:57:56,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 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) [2024-11-28 04:57:56,796 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 4626 transitions. [2024-11-28 04:57:56,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 04:57:56,797 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:56,798 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:56,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:57:57,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:57,001 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:57:57,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:57,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1855509769, now seen corresponding path program 1 times [2024-11-28 04:57:57,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:57:57,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198254736] [2024-11-28 04:57:57,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:57:57,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:57,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:57,006 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:57,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:57:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:57,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:57:57,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:57,296 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 [2024-11-28 04:57:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:57:57,616 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:57:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:57:58,250 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:57:58,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198254736] [2024-11-28 04:57:58,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198254736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:57:58,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:57:58,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-28 04:57:58,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681751406] [2024-11-28 04:57:58,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:57:58,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:57:58,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:57:58,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:57:58,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:57:58,252 INFO L87 Difference]: Start difference. First operand 3550 states and 4626 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 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) [2024-11-28 04:58:18,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:18,269 INFO L93 Difference]: Finished difference Result 5253 states and 6783 transitions. [2024-11-28 04:58:18,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:58:18,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 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 40 [2024-11-28 04:58:18,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:18,273 INFO L225 Difference]: With dead ends: 5253 [2024-11-28 04:58:18,273 INFO L226 Difference]: Without dead ends: 5253 [2024-11-28 04:58:18,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:58:18,274 INFO L435 NwaCegarLoop]: 2408 mSDtfsCounter, 3782 mSDsluCounter, 4402 mSDsCounter, 0 mSdLazyCounter, 4343 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3788 SdHoareTripleChecker+Valid, 6810 SdHoareTripleChecker+Invalid, 4375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 4343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:18,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3788 Valid, 6810 Invalid, 4375 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 4343 Invalid, 0 Unknown, 0 Unchecked, 19.7s Time] [2024-11-28 04:58:18,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5253 states. [2024-11-28 04:58:18,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5253 to 3716. [2024-11-28 04:58:18,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3716 states, 2829 states have (on average 1.7044892188052316) internal successors, (4822), 3697 states have internal predecessors, (4822), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:58:18,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3716 states to 3716 states and 4860 transitions. [2024-11-28 04:58:18,338 INFO L78 Accepts]: Start accepts. Automaton has 3716 states and 4860 transitions. Word has length 40 [2024-11-28 04:58:18,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:18,339 INFO L471 AbstractCegarLoop]: Abstraction has 3716 states and 4860 transitions. [2024-11-28 04:58:18,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 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) [2024-11-28 04:58:18,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3716 states and 4860 transitions. [2024-11-28 04:58:18,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 04:58:18,342 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:18,342 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:18,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:58:18,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:18,543 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr684REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:58:18,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:18,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1839620179, now seen corresponding path program 1 times [2024-11-28 04:58:18,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:58:18,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384122094] [2024-11-28 04:58:18,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:18,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:18,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:18,549 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:18,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:58:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:18,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:58:18,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:19,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:19,023 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:58:19,023 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:58:19,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384122094] [2024-11-28 04:58:19,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384122094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:19,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:19,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:58:19,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833334417] [2024-11-28 04:58:19,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:19,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:58:19,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:58:19,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:58:19,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:58:19,024 INFO L87 Difference]: Start difference. First operand 3716 states and 4860 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-28 04:58:19,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:19,361 INFO L93 Difference]: Finished difference Result 5304 states and 6561 transitions. [2024-11-28 04:58:19,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:58:19,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2024-11-28 04:58:19,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:19,366 INFO L225 Difference]: With dead ends: 5304 [2024-11-28 04:58:19,366 INFO L226 Difference]: Without dead ends: 5304 [2024-11-28 04:58:19,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:58:19,366 INFO L435 NwaCegarLoop]: 2228 mSDtfsCounter, 1445 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:19,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 4285 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:58:19,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5304 states. [2024-11-28 04:58:19,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5304 to 4437. [2024-11-28 04:58:19,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4437 states, 3546 states have (on average 1.6954314720812182) internal successors, (6012), 4411 states have internal predecessors, (6012), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-28 04:58:19,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4437 states to 4437 states and 6064 transitions. [2024-11-28 04:58:19,409 INFO L78 Accepts]: Start accepts. Automaton has 4437 states and 6064 transitions. Word has length 41 [2024-11-28 04:58:19,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:19,409 INFO L471 AbstractCegarLoop]: Abstraction has 4437 states and 6064 transitions. [2024-11-28 04:58:19,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-28 04:58:19,409 INFO L276 IsEmpty]: Start isEmpty. Operand 4437 states and 6064 transitions. [2024-11-28 04:58:19,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 04:58:19,411 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:19,411 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:19,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:58:19,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:19,612 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:58:19,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:19,613 INFO L85 PathProgramCache]: Analyzing trace with hash 277634507, now seen corresponding path program 1 times [2024-11-28 04:58:19,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:58:19,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [612300584] [2024-11-28 04:58:19,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:19,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:19,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:19,616 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:19,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:58:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:19,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:58:19,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:19,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:19,948 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:58:19,948 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:58:19,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612300584] [2024-11-28 04:58:19,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612300584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:19,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:19,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:58:19,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283547400] [2024-11-28 04:58:19,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:19,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:58:19,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:58:19,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:58:19,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:58:19,949 INFO L87 Difference]: Start difference. First operand 4437 states and 6064 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:58:20,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:20,077 INFO L93 Difference]: Finished difference Result 4419 states and 6030 transitions. [2024-11-28 04:58:20,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:58:20,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-28 04:58:20,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:20,084 INFO L225 Difference]: With dead ends: 4419 [2024-11-28 04:58:20,085 INFO L226 Difference]: Without dead ends: 4419 [2024-11-28 04:58:20,085 INFO L434 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 [2024-11-28 04:58:20,086 INFO L435 NwaCegarLoop]: 2138 mSDtfsCounter, 27 mSDsluCounter, 4239 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6377 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 [2024-11-28 04:58:20,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6377 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:58:20,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2024-11-28 04:58:20,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 4419. [2024-11-28 04:58:20,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4419 states, 3528 states have (on average 1.6944444444444444) internal successors, (5978), 4393 states have internal predecessors, (5978), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-28 04:58:20,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4419 states to 4419 states and 6030 transitions. [2024-11-28 04:58:20,147 INFO L78 Accepts]: Start accepts. Automaton has 4419 states and 6030 transitions. Word has length 52 [2024-11-28 04:58:20,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:20,147 INFO L471 AbstractCegarLoop]: Abstraction has 4419 states and 6030 transitions. [2024-11-28 04:58:20,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:58:20,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4419 states and 6030 transitions. [2024-11-28 04:58:20,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 04:58:20,149 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:20,149 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:20,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 04:58:20,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:20,350 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:58:20,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:20,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1298864554, now seen corresponding path program 1 times [2024-11-28 04:58:20,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:58:20,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [871563625] [2024-11-28 04:58:20,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:20,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:20,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:20,353 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:20,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:58:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:20,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:58:20,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:20,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:20,979 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:58:20,979 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:58:20,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871563625] [2024-11-28 04:58:20,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871563625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:20,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:20,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:58:20,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817984252] [2024-11-28 04:58:20,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:20,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:58:20,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:58:20,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:58:20,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:58:20,981 INFO L87 Difference]: Start difference. First operand 4419 states and 6030 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:58:21,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:21,176 INFO L93 Difference]: Finished difference Result 5793 states and 7497 transitions. [2024-11-28 04:58:21,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:58:21,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-28 04:58:21,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:21,183 INFO L225 Difference]: With dead ends: 5793 [2024-11-28 04:58:21,183 INFO L226 Difference]: Without dead ends: 5793 [2024-11-28 04:58:21,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:58:21,184 INFO L435 NwaCegarLoop]: 2151 mSDtfsCounter, 1327 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 4242 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:21,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 4242 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:58:21,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5793 states. [2024-11-28 04:58:21,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5793 to 5166. [2024-11-28 04:58:21,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5166 states, 4271 states have (on average 1.6862561461016154) internal successors, (7202), 5133 states have internal predecessors, (7202), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-28 04:58:21,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 7268 transitions. [2024-11-28 04:58:21,270 INFO L78 Accepts]: Start accepts. Automaton has 5166 states and 7268 transitions. Word has length 53 [2024-11-28 04:58:21,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:21,271 INFO L471 AbstractCegarLoop]: Abstraction has 5166 states and 7268 transitions. [2024-11-28 04:58:21,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:58:21,271 INFO L276 IsEmpty]: Start isEmpty. Operand 5166 states and 7268 transitions. [2024-11-28 04:58:21,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 04:58:21,272 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:21,273 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:21,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 04:58:21,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:21,473 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr381REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:58:21,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:21,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1221998629, now seen corresponding path program 1 times [2024-11-28 04:58:21,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:58:21,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802441048] [2024-11-28 04:58:21,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:21,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:21,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:21,477 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:21,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:58:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:21,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:58:21,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:21,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:21,869 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:58:21,869 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:58:21,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802441048] [2024-11-28 04:58:21,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802441048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:21,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:21,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:58:21,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398733318] [2024-11-28 04:58:21,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:21,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:58:21,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:58:21,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:58:21,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:58:21,870 INFO L87 Difference]: Start difference. First operand 5166 states and 7268 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-11-28 04:58:22,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:22,038 INFO L93 Difference]: Finished difference Result 4696 states and 6520 transitions. [2024-11-28 04:58:22,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:58:22,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2024-11-28 04:58:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:22,045 INFO L225 Difference]: With dead ends: 4696 [2024-11-28 04:58:22,045 INFO L226 Difference]: Without dead ends: 4696 [2024-11-28 04:58:22,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:58:22,046 INFO L435 NwaCegarLoop]: 2103 mSDtfsCounter, 76 mSDsluCounter, 4113 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 6216 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:22,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 6216 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:58:22,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2024-11-28 04:58:22,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 4689. [2024-11-28 04:58:22,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 3806 states have (on average 1.6939043615344194) internal successors, (6447), 4656 states have internal predecessors, (6447), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-28 04:58:22,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 6513 transitions. [2024-11-28 04:58:22,143 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 6513 transitions. Word has length 56 [2024-11-28 04:58:22,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:22,143 INFO L471 AbstractCegarLoop]: Abstraction has 4689 states and 6513 transitions. [2024-11-28 04:58:22,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-11-28 04:58:22,143 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 6513 transitions. [2024-11-28 04:58:22,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 04:58:22,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:22,144 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:22,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:58:22,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:22,345 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:58:22,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:22,346 INFO L85 PathProgramCache]: Analyzing trace with hash 726112748, now seen corresponding path program 1 times [2024-11-28 04:58:22,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:58:22,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657980969] [2024-11-28 04:58:22,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:22,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:22,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:22,349 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:22,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:58:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:22,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:58:22,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:22,763 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:58:22,763 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:58:22,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657980969] [2024-11-28 04:58:22,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657980969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:22,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:22,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:58:22,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880786655] [2024-11-28 04:58:22,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:22,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:58:22,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:58:22,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:58:22,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:58:22,765 INFO L87 Difference]: Start difference. First operand 4689 states and 6513 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-11-28 04:58:22,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:22,885 INFO L93 Difference]: Finished difference Result 4228 states and 5853 transitions. [2024-11-28 04:58:22,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:58:22,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2024-11-28 04:58:22,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:22,889 INFO L225 Difference]: With dead ends: 4228 [2024-11-28 04:58:22,889 INFO L226 Difference]: Without dead ends: 4228 [2024-11-28 04:58:22,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:58:22,890 INFO L435 NwaCegarLoop]: 2057 mSDtfsCounter, 56 mSDsluCounter, 4041 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6098 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:22,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6098 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:58:22,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4228 states. [2024-11-28 04:58:22,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4228 to 4225. [2024-11-28 04:58:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4225 states, 3365 states have (on average 1.7188707280832096) internal successors, (5784), 4192 states have internal predecessors, (5784), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-28 04:58:22,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4225 states to 4225 states and 5850 transitions. [2024-11-28 04:58:22,949 INFO L78 Accepts]: Start accepts. Automaton has 4225 states and 5850 transitions. Word has length 56 [2024-11-28 04:58:22,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:22,950 INFO L471 AbstractCegarLoop]: Abstraction has 4225 states and 5850 transitions. [2024-11-28 04:58:22,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-11-28 04:58:22,950 INFO L276 IsEmpty]: Start isEmpty. Operand 4225 states and 5850 transitions. [2024-11-28 04:58:22,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 04:58:22,951 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:22,951 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:22,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:58:23,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:23,151 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:58:23,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:23,152 INFO L85 PathProgramCache]: Analyzing trace with hash -8851329, now seen corresponding path program 1 times [2024-11-28 04:58:23,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:58:23,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961295390] [2024-11-28 04:58:23,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:23,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:23,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:23,156 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:23,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:58:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:23,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:58:23,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:23,500 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:58:23,501 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:58:23,505 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 33 treesize of output 31 [2024-11-28 04:58:23,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:58:23,556 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 62 treesize of output 22 [2024-11-28 04:58:23,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:23,582 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:58:23,582 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:58:23,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961295390] [2024-11-28 04:58:23,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961295390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:23,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:23,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:58:23,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632045765] [2024-11-28 04:58:23,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:23,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:58:23,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:58:23,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:58:23,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:58:23,584 INFO L87 Difference]: Start difference. First operand 4225 states and 5850 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:58:24,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:24,693 INFO L93 Difference]: Finished difference Result 4790 states and 6332 transitions. [2024-11-28 04:58:24,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:58:24,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-28 04:58:24,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:24,699 INFO L225 Difference]: With dead ends: 4790 [2024-11-28 04:58:24,699 INFO L226 Difference]: Without dead ends: 4790 [2024-11-28 04:58:24,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:58:24,700 INFO L435 NwaCegarLoop]: 1963 mSDtfsCounter, 1702 mSDsluCounter, 3207 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 5170 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:24,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 5170 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:58:24,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4790 states. [2024-11-28 04:58:24,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 3937. [2024-11-28 04:58:24,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3937 states, 3080 states have (on average 1.7285714285714286) internal successors, (5324), 3907 states have internal predecessors, (5324), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-28 04:58:24,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3937 states to 3937 states and 5384 transitions. [2024-11-28 04:58:24,753 INFO L78 Accepts]: Start accepts. Automaton has 3937 states and 5384 transitions. Word has length 60 [2024-11-28 04:58:24,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:24,754 INFO L471 AbstractCegarLoop]: Abstraction has 3937 states and 5384 transitions. [2024-11-28 04:58:24,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:58:24,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3937 states and 5384 transitions. [2024-11-28 04:58:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 04:58:24,754 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:24,755 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:24,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 04:58:24,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:24,955 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr381REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:58:24,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:24,955 INFO L85 PathProgramCache]: Analyzing trace with hash -706918385, now seen corresponding path program 1 times [2024-11-28 04:58:24,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:58:24,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120001006] [2024-11-28 04:58:24,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:24,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:24,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:24,957 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:24,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:58:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:25,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:58:25,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:25,287 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:58:25,288 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:58:25,288 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:58:25,293 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 [2024-11-28 04:58:25,603 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:58:25,603 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 [2024-11-28 04:58:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:25,617 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:58:25,617 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:58:25,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120001006] [2024-11-28 04:58:25,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120001006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:25,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:25,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:58:25,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549729406] [2024-11-28 04:58:25,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:25,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:58:25,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:58:25,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:58:25,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:58:25,618 INFO L87 Difference]: Start difference. First operand 3937 states and 5384 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-11-28 04:58:26,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:26,376 INFO L93 Difference]: Finished difference Result 4072 states and 5120 transitions. [2024-11-28 04:58:26,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:58:26,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 64 [2024-11-28 04:58:26,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:26,381 INFO L225 Difference]: With dead ends: 4072 [2024-11-28 04:58:26,381 INFO L226 Difference]: Without dead ends: 4072 [2024-11-28 04:58:26,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:58:26,381 INFO L435 NwaCegarLoop]: 2276 mSDtfsCounter, 906 mSDsluCounter, 5131 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 7407 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:26,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 7407 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:58:26,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2024-11-28 04:58:26,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 3417. [2024-11-28 04:58:26,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3417 states, 2560 states have (on average 1.764453125) internal successors, (4517), 3390 states have internal predecessors, (4517), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 04:58:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3417 states to 3417 states and 4571 transitions. [2024-11-28 04:58:26,415 INFO L78 Accepts]: Start accepts. Automaton has 3417 states and 4571 transitions. Word has length 64 [2024-11-28 04:58:26,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:26,416 INFO L471 AbstractCegarLoop]: Abstraction has 3417 states and 4571 transitions. [2024-11-28 04:58:26,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-11-28 04:58:26,416 INFO L276 IsEmpty]: Start isEmpty. Operand 3417 states and 4571 transitions. [2024-11-28 04:58:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 04:58:26,416 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:26,416 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:26,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 04:58:26,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:26,617 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:58:26,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:26,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2045940128, now seen corresponding path program 1 times [2024-11-28 04:58:26,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:58:26,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1268501303] [2024-11-28 04:58:26,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:26,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:26,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:26,619 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:26,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:58:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:26,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:58:26,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:26,965 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 [2024-11-28 04:58:27,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:58:27,534 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 [2024-11-28 04:58:27,546 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:58:27,546 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 [2024-11-28 04:58:27,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:27,552 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:58:27,553 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:58:27,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268501303] [2024-11-28 04:58:27,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268501303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:27,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:27,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:58:27,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608483609] [2024-11-28 04:58:27,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:27,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:58:27,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:58:27,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:58:27,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:58:27,554 INFO L87 Difference]: Start difference. First operand 3417 states and 4571 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-11-28 04:58:33,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:33,822 INFO L93 Difference]: Finished difference Result 3333 states and 4421 transitions. [2024-11-28 04:58:33,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:58:33,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 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 64 [2024-11-28 04:58:33,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:33,827 INFO L225 Difference]: With dead ends: 3333 [2024-11-28 04:58:33,827 INFO L226 Difference]: Without dead ends: 3333 [2024-11-28 04:58:33,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:58:33,829 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 1719 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 2622 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:33,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1729 Valid, 1833 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2622 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-28 04:58:33,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3333 states. [2024-11-28 04:58:33,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3333 to 3263. [2024-11-28 04:58:33,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3263 states, 2490 states have (on average 1.702409638554217) internal successors, (4239), 3236 states have internal predecessors, (4239), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 04:58:33,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4293 transitions. [2024-11-28 04:58:33,860 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4293 transitions. Word has length 64 [2024-11-28 04:58:33,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:33,860 INFO L471 AbstractCegarLoop]: Abstraction has 3263 states and 4293 transitions. [2024-11-28 04:58:33,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-11-28 04:58:33,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4293 transitions. [2024-11-28 04:58:33,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 04:58:33,861 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:33,861 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:33,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 04:58:34,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:34,061 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:58:34,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:34,062 INFO L85 PathProgramCache]: Analyzing trace with hash 2115533845, now seen corresponding path program 1 times [2024-11-28 04:58:34,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:58:34,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262282858] [2024-11-28 04:58:34,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:34,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:34,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:34,064 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:34,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:58:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:34,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:58:34,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:34,447 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 [2024-11-28 04:58:34,464 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 [2024-11-28 04:58:34,499 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 [2024-11-28 04:58:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:34,524 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:58:34,524 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:58:34,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262282858] [2024-11-28 04:58:34,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262282858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:34,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:34,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:58:34,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396536514] [2024-11-28 04:58:34,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:34,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:58:34,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:58:34,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:58:34,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:58:34,526 INFO L87 Difference]: Start difference. First operand 3263 states and 4293 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-28 04:58:39,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:39,996 INFO L93 Difference]: Finished difference Result 3262 states and 4291 transitions. [2024-11-28 04:58:39,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:58:39,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 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 69 [2024-11-28 04:58:39,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:39,999 INFO L225 Difference]: With dead ends: 3262 [2024-11-28 04:58:39,999 INFO L226 Difference]: Without dead ends: 3262 [2024-11-28 04:58:39,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:58:39,999 INFO L435 NwaCegarLoop]: 1984 mSDtfsCounter, 2 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 2596 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5347 SdHoareTripleChecker+Invalid, 2597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:40,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5347 Invalid, 2597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2596 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-28 04:58:40,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2024-11-28 04:58:40,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3262. [2024-11-28 04:58:40,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3262 states, 2490 states have (on average 1.7016064257028112) internal successors, (4237), 3235 states have internal predecessors, (4237), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 04:58:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3262 states to 3262 states and 4291 transitions. [2024-11-28 04:58:40,025 INFO L78 Accepts]: Start accepts. Automaton has 3262 states and 4291 transitions. Word has length 69 [2024-11-28 04:58:40,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:40,025 INFO L471 AbstractCegarLoop]: Abstraction has 3262 states and 4291 transitions. [2024-11-28 04:58:40,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-28 04:58:40,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3262 states and 4291 transitions. [2024-11-28 04:58:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 04:58:40,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:40,026 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:40,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 04:58:40,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:40,226 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:58:40,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:40,226 INFO L85 PathProgramCache]: Analyzing trace with hash 2115533846, now seen corresponding path program 1 times [2024-11-28 04:58:40,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:58:40,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295808786] [2024-11-28 04:58:40,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:40,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:40,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:40,231 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:40,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:58:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:40,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:58:40,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:40,620 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 [2024-11-28 04:58:40,645 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 [2024-11-28 04:58:40,656 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 [2024-11-28 04:58:40,717 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 [2024-11-28 04:58:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:40,737 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:58:40,738 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:58:40,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295808786] [2024-11-28 04:58:40,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295808786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:40,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:40,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:58:40,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70185875] [2024-11-28 04:58:40,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:40,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:58:40,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:58:40,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:58:40,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:58:40,739 INFO L87 Difference]: Start difference. First operand 3262 states and 4291 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-28 04:58:48,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:48,042 INFO L93 Difference]: Finished difference Result 3261 states and 4289 transitions. [2024-11-28 04:58:48,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:58:48,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 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 69 [2024-11-28 04:58:48,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:48,046 INFO L225 Difference]: With dead ends: 3261 [2024-11-28 04:58:48,046 INFO L226 Difference]: Without dead ends: 3261 [2024-11-28 04:58:48,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:58:48,046 INFO L435 NwaCegarLoop]: 1984 mSDtfsCounter, 1 mSDsluCounter, 3308 mSDsCounter, 0 mSdLazyCounter, 2648 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5292 SdHoareTripleChecker+Invalid, 2649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:48,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5292 Invalid, 2649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2648 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-28 04:58:48,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3261 states. [2024-11-28 04:58:48,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3261 to 3261. [2024-11-28 04:58:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3261 states, 2488 states have (on average 1.7021704180064308) internal successors, (4235), 3234 states have internal predecessors, (4235), 27 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 04:58:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3261 states to 3261 states and 4289 transitions. [2024-11-28 04:58:48,073 INFO L78 Accepts]: Start accepts. Automaton has 3261 states and 4289 transitions. Word has length 69 [2024-11-28 04:58:48,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:48,073 INFO L471 AbstractCegarLoop]: Abstraction has 3261 states and 4289 transitions. [2024-11-28 04:58:48,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-28 04:58:48,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3261 states and 4289 transitions. [2024-11-28 04:58:48,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 04:58:48,073 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:48,073 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:48,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 04:58:48,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:48,274 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:58:48,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:48,274 INFO L85 PathProgramCache]: Analyzing trace with hash -357186148, now seen corresponding path program 1 times [2024-11-28 04:58:48,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:58:48,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265508852] [2024-11-28 04:58:48,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:48,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:48,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:48,277 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:48,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:58:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:48,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:58:48,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:48,645 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 [2024-11-28 04:58:48,744 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 [2024-11-28 04:58:48,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:48,764 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:58:48,764 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:58:48,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265508852] [2024-11-28 04:58:48,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265508852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:48,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:48,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:58:48,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669285808] [2024-11-28 04:58:48,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:48,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:58:48,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:58:48,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:58:48,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:58:48,767 INFO L87 Difference]: Start difference. First operand 3261 states and 4289 transitions. Second operand has 7 states, 5 states have (on average 15.0) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-28 04:58:55,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:55,089 INFO L93 Difference]: Finished difference Result 3279 states and 4321 transitions. [2024-11-28 04:58:55,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:58:55,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 15.0) internal successors, (75), 6 states have internal predecessors, (75), 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 77 [2024-11-28 04:58:55,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:55,095 INFO L225 Difference]: With dead ends: 3279 [2024-11-28 04:58:55,095 INFO L226 Difference]: Without dead ends: 3279 [2024-11-28 04:58:55,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:58:55,096 INFO L435 NwaCegarLoop]: 1948 mSDtfsCounter, 27 mSDsluCounter, 5470 mSDsCounter, 0 mSdLazyCounter, 2514 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 7418 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:55,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 7418 Invalid, 2525 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 2514 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-28 04:58:55,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2024-11-28 04:58:55,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 3270. [2024-11-28 04:58:55,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3270 states, 2496 states have (on average 1.701121794871795) internal successors, (4246), 3241 states have internal predecessors, (4246), 27 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (38), 26 states have call predecessors, (38), 27 states have call successors, (38) [2024-11-28 04:58:55,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 4311 transitions. [2024-11-28 04:58:55,134 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 4311 transitions. Word has length 77 [2024-11-28 04:58:55,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:55,134 INFO L471 AbstractCegarLoop]: Abstraction has 3270 states and 4311 transitions. [2024-11-28 04:58:55,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 15.0) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-11-28 04:58:55,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 4311 transitions. [2024-11-28 04:58:55,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 04:58:55,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:55,135 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:55,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 04:58:55,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:55,336 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:58:55,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:55,336 INFO L85 PathProgramCache]: Analyzing trace with hash -357186147, now seen corresponding path program 1 times [2024-11-28 04:58:55,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:58:55,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689712306] [2024-11-28 04:58:55,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:55,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:55,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:55,340 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:55,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 04:58:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:55,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:58:55,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:55,717 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:58:55,717 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:58:55,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689712306] [2024-11-28 04:58:55,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689712306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:58:55,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:58:55,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:58:55,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822293590] [2024-11-28 04:58:55,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:58:55,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:58:55,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:58:55,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:58:55,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:58:55,719 INFO L87 Difference]: Start difference. First operand 3270 states and 4311 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-28 04:58:55,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:55,808 INFO L93 Difference]: Finished difference Result 3264 states and 4295 transitions. [2024-11-28 04:58:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:58:55,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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 77 [2024-11-28 04:58:55,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:55,817 INFO L225 Difference]: With dead ends: 3264 [2024-11-28 04:58:55,817 INFO L226 Difference]: Without dead ends: 3264 [2024-11-28 04:58:55,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:58:55,818 INFO L435 NwaCegarLoop]: 1983 mSDtfsCounter, 0 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5941 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:55,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5941 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:58:55,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2024-11-28 04:58:55,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 3264. [2024-11-28 04:58:55,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3264 states, 2490 states have (on average 1.702008032128514) internal successors, (4238), 3237 states have internal predecessors, (4238), 27 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-28 04:58:55,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3264 states to 3264 states and 4295 transitions. [2024-11-28 04:58:55,861 INFO L78 Accepts]: Start accepts. Automaton has 3264 states and 4295 transitions. Word has length 77 [2024-11-28 04:58:55,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:55,861 INFO L471 AbstractCegarLoop]: Abstraction has 3264 states and 4295 transitions. [2024-11-28 04:58:55,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-11-28 04:58:55,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3264 states and 4295 transitions. [2024-11-28 04:58:55,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:58:55,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:55,862 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:55,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-28 04:58:56,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:56,063 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:58:56,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:56,064 INFO L85 PathProgramCache]: Analyzing trace with hash 864656457, now seen corresponding path program 1 times [2024-11-28 04:58:56,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:58:56,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244213725] [2024-11-28 04:58:56,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:56,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:56,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:56,068 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:56,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 04:58:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:56,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:58:56,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:56,477 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:58:56,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:58:56,558 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:58:56,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244213725] [2024-11-28 04:58:56,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244213725] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:58:56,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:58:56,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-28 04:58:56,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022575322] [2024-11-28 04:58:56,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:58:56,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:58:56,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:58:56,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:58:56,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:58:56,560 INFO L87 Difference]: Start difference. First operand 3264 states and 4295 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2024-11-28 04:58:56,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:56,769 INFO L93 Difference]: Finished difference Result 3276 states and 4314 transitions. [2024-11-28 04:58:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:58:56,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 78 [2024-11-28 04:58:56,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:56,776 INFO L225 Difference]: With dead ends: 3276 [2024-11-28 04:58:56,776 INFO L226 Difference]: Without dead ends: 3276 [2024-11-28 04:58:56,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:58:56,776 INFO L435 NwaCegarLoop]: 1982 mSDtfsCounter, 5 mSDsluCounter, 7907 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 9889 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:56,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 9889 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:58:56,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2024-11-28 04:58:56,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 3274. [2024-11-28 04:58:56,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3274 states, 2499 states have (on average 1.7018807523009203) internal successors, (4253), 3246 states have internal predecessors, (4253), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-28 04:58:56,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 4310 transitions. [2024-11-28 04:58:56,821 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 4310 transitions. Word has length 78 [2024-11-28 04:58:56,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:56,821 INFO L471 AbstractCegarLoop]: Abstraction has 3274 states and 4310 transitions. [2024-11-28 04:58:56,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2024-11-28 04:58:56,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 4310 transitions. [2024-11-28 04:58:56,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-28 04:58:56,822 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:56,822 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:56,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 04:58:57,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:57,023 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:58:57,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:57,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1816955100, now seen corresponding path program 2 times [2024-11-28 04:58:57,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:58:57,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072156784] [2024-11-28 04:58:57,024 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:58:57,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:57,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:57,026 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:57,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 04:59:10,925 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:59:10,925 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:59:10,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:59:10,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:11,066 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:59:11,066 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 [2024-11-28 04:59:11,086 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 [2024-11-28 04:59:11,290 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:59:11,291 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 [2024-11-28 04:59:11,334 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 [2024-11-28 04:59:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:59:11,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:59:11,465 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-28 04:59:11,466 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 [2024-11-28 04:59:11,475 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1726 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem37#1.base| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_1726) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2024-11-28 04:59:11,476 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:59:11,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072156784] [2024-11-28 04:59:11,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072156784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:11,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [973578068] [2024-11-28 04:59:11,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:59:11,477 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:59:11,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:59:11,479 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:59:11,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-28 04:59:13,115 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:59:13,115 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:59:13,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:59:13,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:59:13,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:59:13,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:59:13,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [973578068] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:59:13,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:59:13,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-11-28 04:59:13,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256928033] [2024-11-28 04:59:13,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:59:13,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 04:59:13,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:59:13,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 04:59:13,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2024-11-28 04:59:13,657 INFO L87 Difference]: Start difference. First operand 3274 states and 4310 transitions. Second operand has 24 states, 23 states have (on average 6.304347826086956) internal successors, (145), 23 states have internal predecessors, (145), 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) [2024-11-28 04:59:33,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:33,221 INFO L93 Difference]: Finished difference Result 3290 states and 4336 transitions. [2024-11-28 04:59:33,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 04:59:33,221 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.304347826086956) internal successors, (145), 23 states have internal predecessors, (145), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 81 [2024-11-28 04:59:33,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:33,228 INFO L225 Difference]: With dead ends: 3290 [2024-11-28 04:59:33,229 INFO L226 Difference]: Without dead ends: 3286 [2024-11-28 04:59:33,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=413, Invalid=2242, Unknown=1, NotChecked=100, Total=2756 [2024-11-28 04:59:33,230 INFO L435 NwaCegarLoop]: 1205 mSDtfsCounter, 1752 mSDsluCounter, 13927 mSDsCounter, 0 mSdLazyCounter, 11173 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 15132 SdHoareTripleChecker+Invalid, 11219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 11173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:33,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1769 Valid, 15132 Invalid, 11219 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 11173 Invalid, 0 Unknown, 0 Unchecked, 18.4s Time] [2024-11-28 04:59:33,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2024-11-28 04:59:33,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 3282. [2024-11-28 04:59:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3282 states, 2508 states have (on average 1.6997607655502391) internal successors, (4263), 3254 states have internal predecessors, (4263), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-28 04:59:33,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3282 states to 3282 states and 4320 transitions. [2024-11-28 04:59:33,295 INFO L78 Accepts]: Start accepts. Automaton has 3282 states and 4320 transitions. Word has length 81 [2024-11-28 04:59:33,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:33,296 INFO L471 AbstractCegarLoop]: Abstraction has 3282 states and 4320 transitions. [2024-11-28 04:59:33,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.304347826086956) internal successors, (145), 23 states have internal predecessors, (145), 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) [2024-11-28 04:59:33,296 INFO L276 IsEmpty]: Start isEmpty. Operand 3282 states and 4320 transitions. [2024-11-28 04:59:33,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 04:59:33,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:33,297 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:59:33,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 04:59:33,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2024-11-28 04:59:33,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 04:59:33,698 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:59:33,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:33,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1913986627, now seen corresponding path program 1 times [2024-11-28 04:59:33,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:59:33,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360458205] [2024-11-28 04:59:33,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:59:33,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:33,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:33,701 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:33,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 04:59:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:59:34,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:59:34,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:34,320 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:59:34,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:59:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:59:34,941 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:59:34,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360458205] [2024-11-28 04:59:34,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360458205] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:59:34,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:59:34,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-28 04:59:34,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568134564] [2024-11-28 04:59:34,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:59:34,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:59:34,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:59:34,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:59:34,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:59:34,942 INFO L87 Difference]: Start difference. First operand 3282 states and 4320 transitions. Second operand has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 26 states have internal predecessors, (98), 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) [2024-11-28 04:59:37,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:59:37,148 INFO L93 Difference]: Finished difference Result 3306 states and 4359 transitions. [2024-11-28 04:59:37,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 04:59:37,148 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 26 states have internal predecessors, (98), 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 87 [2024-11-28 04:59:37,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:59:37,153 INFO L225 Difference]: With dead ends: 3306 [2024-11-28 04:59:37,153 INFO L226 Difference]: Without dead ends: 3300 [2024-11-28 04:59:37,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 04:59:37,154 INFO L435 NwaCegarLoop]: 1982 mSDtfsCounter, 25 mSDsluCounter, 21758 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 23740 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:59:37,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 23740 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:59:37,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2024-11-28 04:59:37,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 3300. [2024-11-28 04:59:37,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 2526 states have (on average 1.6967537608867775) internal successors, (4286), 3272 states have internal predecessors, (4286), 27 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-28 04:59:37,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 4343 transitions. [2024-11-28 04:59:37,211 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 4343 transitions. Word has length 87 [2024-11-28 04:59:37,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:59:37,212 INFO L471 AbstractCegarLoop]: Abstraction has 3300 states and 4343 transitions. [2024-11-28 04:59:37,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.769230769230769) internal successors, (98), 26 states have internal predecessors, (98), 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) [2024-11-28 04:59:37,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 4343 transitions. [2024-11-28 04:59:37,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 04:59:37,213 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:59:37,213 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:59:37,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-28 04:59:37,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:37,414 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 04:59:37,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:59:37,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1348148093, now seen corresponding path program 2 times [2024-11-28 04:59:37,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:59:37,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712630142] [2024-11-28 04:59:37,415 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:59:37,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:37,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:37,416 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:37,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 05:00:30,815 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:00:30,816 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:00:30,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 05:00:30,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:31,017 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:00:31,017 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 [2024-11-28 05:00:31,025 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 [2024-11-28 05:00:31,061 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 [2024-11-28 05:00:31,076 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 [2024-11-28 05:00:31,227 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 [2024-11-28 05:00:31,234 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 [2024-11-28 05:00:31,841 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:00:31,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 05:00:31,853 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 [2024-11-28 05:00:31,940 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 [2024-11-28 05:00:31,946 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 [2024-11-28 05:00:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-28 05:00:31,975 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:00:32,673 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:00:32,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712630142] [2024-11-28 05:00:32,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712630142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:32,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [618357831] [2024-11-28 05:00:32,674 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:00:32,674 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:00:32,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:00:32,677 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:00:32,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-28 05:00:34,541 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:00:34,541 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:00:34,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 05:00:34,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:35,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:00:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:38,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [618357831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:00:38,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:00:38,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2024-11-28 05:00:38,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227646498] [2024-11-28 05:00:38,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:00:38,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-28 05:00:38,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:00:38,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-28 05:00:38,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=2951, Unknown=9, NotChecked=0, Total=3660 [2024-11-28 05:00:38,449 INFO L87 Difference]: Start difference. First operand 3300 states and 4343 transitions. Second operand has 58 states, 57 states have (on average 3.175438596491228) internal successors, (181), 58 states have internal predecessors, (181), 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) [2024-11-28 05:01:46,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:46,202 INFO L93 Difference]: Finished difference Result 3396 states and 4494 transitions. [2024-11-28 05:01:46,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-28 05:01:46,203 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.175438596491228) internal successors, (181), 58 states have internal predecessors, (181), 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 99 [2024-11-28 05:01:46,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:46,208 INFO L225 Difference]: With dead ends: 3396 [2024-11-28 05:01:46,208 INFO L226 Difference]: Without dead ends: 3384 [2024-11-28 05:01:46,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5829 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=5258, Invalid=18909, Unknown=13, NotChecked=0, Total=24180 [2024-11-28 05:01:46,212 INFO L435 NwaCegarLoop]: 1231 mSDtfsCounter, 1758 mSDsluCounter, 35814 mSDsCounter, 0 mSdLazyCounter, 29097 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 37045 SdHoareTripleChecker+Invalid, 29209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 29097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:46,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1769 Valid, 37045 Invalid, 29209 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [112 Valid, 29097 Invalid, 0 Unknown, 0 Unchecked, 52.8s Time] [2024-11-28 05:01:46,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2024-11-28 05:01:46,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 3382. [2024-11-28 05:01:46,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3382 states, 2608 states have (on average 1.679064417177914) internal successors, (4379), 3353 states have internal predecessors, (4379), 27 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-28 05:01:46,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 4436 transitions. [2024-11-28 05:01:46,266 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 4436 transitions. Word has length 99 [2024-11-28 05:01:46,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:46,266 INFO L471 AbstractCegarLoop]: Abstraction has 3382 states and 4436 transitions. [2024-11-28 05:01:46,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.175438596491228) internal successors, (181), 58 states have internal predecessors, (181), 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) [2024-11-28 05:01:46,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 4436 transitions. [2024-11-28 05:01:46,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 05:01:46,267 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:46,267 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:46,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2024-11-28 05:01:46,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-28 05:01:46,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:01:46,668 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 05:01:46,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:46,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1358578009, now seen corresponding path program 1 times [2024-11-28 05:01:46,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:01:46,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301654286] [2024-11-28 05:01:46,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:46,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:01:46,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:01:46,671 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:01:46,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 05:01:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:47,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 05:01:47,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:01:47,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:01:47,469 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:01:47,469 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 [2024-11-28 05:01:47,492 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 [2024-11-28 05:01:47,868 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:01:47,868 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 [2024-11-28 05:01:47,941 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:01:47,942 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 [2024-11-28 05:01:47,988 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 [2024-11-28 05:01:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:01:48,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:01:48,058 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-28 05:01:48,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-28 05:01:48,118 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3012 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_3012) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-28 05:01:48,560 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3012 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3058 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_3058)) (.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_3012) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-28 05:01:48,563 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:01:48,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301654286] [2024-11-28 05:01:48,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301654286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:01:48,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [112504109] [2024-11-28 05:01:48,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:48,564 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:01:48,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:01:48,566 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:01:48,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-28 05:01:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:51,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 05:01:51,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:01:51,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 05:01:52,101 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 05:01:52,102 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 [2024-11-28 05:01:52,159 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 [2024-11-28 05:01:52,308 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 [2024-11-28 05:01:53,401 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:01:53,401 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 [2024-11-28 05:01:53,581 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:01:53,581 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 [2024-11-28 05:01:53,610 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 [2024-11-28 05:01:53,663 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:01:53,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:01:53,678 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3481 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_3481) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-28 05:01:53,687 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3481 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3481) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 05:01:54,095 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3527 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3481 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_3527))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3481)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:01:54,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [112504109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:01:54,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:01:54,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2024-11-28 05:01:54,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718595208] [2024-11-28 05:01:54,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:01:54,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:01:54,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:01:54,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:01:54,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=311, Unknown=12, NotChecked=200, Total=600 [2024-11-28 05:01:54,099 INFO L87 Difference]: Start difference. First operand 3382 states and 4436 transitions. Second operand has 18 states, 15 states have (on average 6.533333333333333) internal successors, (98), 18 states have internal predecessors, (98), 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) [2024-11-28 05:02:04,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:02:04,275 INFO L93 Difference]: Finished difference Result 3383 states and 4438 transitions. [2024-11-28 05:02:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:02:04,275 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 6.533333333333333) internal successors, (98), 18 states have internal predecessors, (98), 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 124 [2024-11-28 05:02:04,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:02:04,281 INFO L225 Difference]: With dead ends: 3383 [2024-11-28 05:02:04,281 INFO L226 Difference]: Without dead ends: 3383 [2024-11-28 05:02:04,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 236 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=342, Unknown=12, NotChecked=210, Total=650 [2024-11-28 05:02:04,282 INFO L435 NwaCegarLoop]: 1207 mSDtfsCounter, 1682 mSDsluCounter, 5743 mSDsCounter, 0 mSdLazyCounter, 5313 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1697 SdHoareTripleChecker+Valid, 6950 SdHoareTripleChecker+Invalid, 5347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 5313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:02:04,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1697 Valid, 6950 Invalid, 5347 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 5313 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2024-11-28 05:02:04,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3383 states. [2024-11-28 05:02:04,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3383 to 3381. [2024-11-28 05:02:04,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3381 states, 2608 states have (on average 1.67829754601227) internal successors, (4377), 3352 states have internal predecessors, (4377), 27 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-28 05:02:04,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3381 states to 3381 states and 4434 transitions. [2024-11-28 05:02:04,312 INFO L78 Accepts]: Start accepts. Automaton has 3381 states and 4434 transitions. Word has length 124 [2024-11-28 05:02:04,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:02:04,312 INFO L471 AbstractCegarLoop]: Abstraction has 3381 states and 4434 transitions. [2024-11-28 05:02:04,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 6.533333333333333) internal successors, (98), 18 states have internal predecessors, (98), 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) [2024-11-28 05:02:04,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3381 states and 4434 transitions. [2024-11-28 05:02:04,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 05:02:04,313 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:02:04,313 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:02:04,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2024-11-28 05:02:04,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 05:02:04,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:02:04,714 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 05:02:04,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:04,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1358578008, now seen corresponding path program 1 times [2024-11-28 05:02:04,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:02:04,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27447953] [2024-11-28 05:02:04,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:04,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:02:04,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:02:04,717 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:02:04,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 05:02:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:05,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-28 05:02:05,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:02:05,523 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:02:05,523 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 [2024-11-28 05:02:05,529 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 [2024-11-28 05:02:05,558 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 [2024-11-28 05:02:05,564 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 [2024-11-28 05:02:05,674 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 [2024-11-28 05:02:05,679 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 [2024-11-28 05:02:06,459 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:02:06,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 05:02:06,471 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 [2024-11-28 05:02:06,573 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:02:06,573 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 [2024-11-28 05:02:06,578 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 [2024-11-28 05:02:06,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 05:02:06,611 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 [2024-11-28 05:02:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:02:06,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:02:06,773 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3996 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3995 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_3996) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_3995) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3996 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_3996) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-28 05:02:06,806 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3996 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_3996) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3996 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3995 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_3996) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_3995) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 05:02:08,229 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3996 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4087 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4088 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4087) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4088) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3996) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_3996 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4087 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4088 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4088))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4087) .cse2 v_ArrVal_3996) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_3995) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 05:02:08,237 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:02:08,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27447953] [2024-11-28 05:02:08,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27447953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:02:08,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [190436838] [2024-11-28 05:02:08,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:08,237 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:02:08,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:02:08,239 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:02:08,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-28 05:02:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:11,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-28 05:02:11,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:02:11,958 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 [2024-11-28 05:02:11,967 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 [2024-11-28 05:02:12,572 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-28 05:02:12,572 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 [2024-11-28 05:02:12,603 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:02:12,604 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 [2024-11-28 05:02:12,694 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 15 treesize of output 1 [2024-11-28 05:02:12,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:02:12,836 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 17 treesize of output 9 [2024-11-28 05:02:12,905 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 7 treesize of output 3 [2024-11-28 05:02:13,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:02:13,597 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 16 treesize of output 11 [2024-11-28 05:02:13,851 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2024-11-28 05:02:13,862 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 27 treesize of output 22 [2024-11-28 05:02:14,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:02:14,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 22 [2024-11-28 05:02:14,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:02:14,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 05:02:14,156 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:02:14,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:02:14,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 239 treesize of output 167 [2024-11-28 05:02:31,862 WARN L286 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 05:03:11,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [190436838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:03:11,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:03:11,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2024-11-28 05:03:11,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995357514] [2024-11-28 05:03:11,750 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:03:11,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 05:03:11,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:03:11,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 05:03:11,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=12, NotChecked=144, Total=756 [2024-11-28 05:03:11,751 INFO L87 Difference]: Start difference. First operand 3381 states and 4434 transitions. Second operand has 20 states, 17 states have (on average 9.117647058823529) internal successors, (155), 20 states have internal predecessors, (155), 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) [2024-11-28 05:06:04,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:06:04,550 INFO L93 Difference]: Finished difference Result 5040 states and 6639 transitions. [2024-11-28 05:06:04,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:06:04,551 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 9.117647058823529) internal successors, (155), 20 states have internal predecessors, (155), 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 124 [2024-11-28 05:06:04,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:06:04,560 INFO L225 Difference]: With dead ends: 5040 [2024-11-28 05:06:04,561 INFO L226 Difference]: Without dead ends: 5040 [2024-11-28 05:06:04,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 232 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 52.3s TimeCoverageRelationStatistics Valid=163, Invalid=893, Unknown=12, NotChecked=192, Total=1260 [2024-11-28 05:06:04,561 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 4415 mSDsluCounter, 9718 mSDsCounter, 0 mSdLazyCounter, 16759 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 164.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4431 SdHoareTripleChecker+Valid, 10633 SdHoareTripleChecker+Invalid, 16794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 16759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 169.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:06:04,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4431 Valid, 10633 Invalid, 16794 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [35 Valid, 16759 Invalid, 0 Unknown, 0 Unchecked, 169.2s Time] [2024-11-28 05:06:04,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5040 states. [2024-11-28 05:06:04,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5040 to 3380. [2024-11-28 05:06:04,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3380 states, 2608 states have (on average 1.6775306748466257) internal successors, (4375), 3351 states have internal predecessors, (4375), 27 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-28 05:06:04,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 4432 transitions. [2024-11-28 05:06:04,634 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 4432 transitions. Word has length 124 [2024-11-28 05:06:04,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:06:04,634 INFO L471 AbstractCegarLoop]: Abstraction has 3380 states and 4432 transitions. [2024-11-28 05:06:04,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 9.117647058823529) internal successors, (155), 20 states have internal predecessors, (155), 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) [2024-11-28 05:06:04,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 4432 transitions. [2024-11-28 05:06:04,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-28 05:06:04,635 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:06:04,635 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:04,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-11-28 05:06:04,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 05:06:05,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:05,036 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 05:06:05,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:05,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1920279389, now seen corresponding path program 1 times [2024-11-28 05:06:05,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:06:05,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12001911] [2024-11-28 05:06:05,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:05,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:05,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:05,039 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:05,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 05:06:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:05,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-28 05:06:05,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:05,772 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 [2024-11-28 05:06:06,888 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:06:06,888 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 [2024-11-28 05:06:06,979 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 [2024-11-28 05:06:08,969 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:06:08,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-28 05:06:09,307 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:06:09,307 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 [2024-11-28 05:06:09,913 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:06:09,913 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 [2024-11-28 05:06:10,007 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 [2024-11-28 05:06:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:06:10,176 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:06:10,729 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4999 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4999) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 05:06:10,847 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-28 05:06:10,847 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 [2024-11-28 05:06:11,212 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4999 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4998 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_4998))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4999)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-28 05:06:12,534 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4999 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5045 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5045)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_4998))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4999)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3)))) is different from false [2024-11-28 05:06:12,545 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:06:12,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12001911] [2024-11-28 05:06:12,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12001911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:12,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [403483217] [2024-11-28 05:06:12,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:12,546 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:06:12,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:06:12,547 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:06:12,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2024-11-28 05:06:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:31,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 05:06:31,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:31,239 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 [2024-11-28 05:06:32,436 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 05:06:32,437 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 [2024-11-28 05:06:32,730 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 [2024-11-28 05:06:33,600 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 [2024-11-28 05:06:38,497 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:06:38,497 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 [2024-11-28 05:06:39,397 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:06:39,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 05:06:40,049 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:06:40,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 05:06:40,196 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 [2024-11-28 05:06:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:06:40,591 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:06:41,058 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4999 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5483 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5483))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4999)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:06:41,112 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4999 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5483 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5483))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4999)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:06:42,502 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4999 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5483 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5530 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5530))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5483)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4999)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:06:42,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [403483217] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:42,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:06:42,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-11-28 05:06:42,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342536708] [2024-11-28 05:06:42,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:06:42,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 05:06:42,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:06:42,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 05:06:42,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=24, NotChecked=282, Total=812 [2024-11-28 05:06:42,515 INFO L87 Difference]: Start difference. First operand 3380 states and 4432 transitions. Second operand has 20 states, 17 states have (on average 6.117647058823529) internal successors, (104), 20 states have internal predecessors, (104), 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) [2024-11-28 05:08:04,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:08:04,153 INFO L93 Difference]: Finished difference Result 3381 states and 4434 transitions. [2024-11-28 05:08:04,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:08:04,153 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 6.117647058823529) internal successors, (104), 20 states have internal predecessors, (104), 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 127 [2024-11-28 05:08:04,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:08:04,163 INFO L225 Difference]: With dead ends: 3381 [2024-11-28 05:08:04,163 INFO L226 Difference]: Without dead ends: 3381 [2024-11-28 05:08:04,163 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 243 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=24, NotChecked=294, Total=870 [2024-11-28 05:08:04,164 INFO L435 NwaCegarLoop]: 1206 mSDtfsCounter, 1681 mSDsluCounter, 8934 mSDsCounter, 0 mSdLazyCounter, 8012 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 10140 SdHoareTripleChecker+Invalid, 8046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 8012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:08:04,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 10140 Invalid, 8046 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 8012 Invalid, 0 Unknown, 0 Unchecked, 81.2s Time] [2024-11-28 05:08:04,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2024-11-28 05:08:04,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 3379. [2024-11-28 05:08:04,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3379 states, 2608 states have (on average 1.6767638036809815) internal successors, (4373), 3350 states have internal predecessors, (4373), 27 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-28 05:08:04,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3379 states to 3379 states and 4430 transitions. [2024-11-28 05:08:04,205 INFO L78 Accepts]: Start accepts. Automaton has 3379 states and 4430 transitions. Word has length 127 [2024-11-28 05:08:04,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:08:04,205 INFO L471 AbstractCegarLoop]: Abstraction has 3379 states and 4430 transitions. [2024-11-28 05:08:04,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 6.117647058823529) internal successors, (104), 20 states have internal predecessors, (104), 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) [2024-11-28 05:08:04,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3379 states and 4430 transitions. [2024-11-28 05:08:04,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-28 05:08:04,206 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:08:04,206 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:08:04,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2024-11-28 05:08:04,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-28 05:08:04,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:04,608 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 05:08:04,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:04,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1920279388, now seen corresponding path program 1 times [2024-11-28 05:08:04,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:08:04,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098976803] [2024-11-28 05:08:04,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:08:04,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:04,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:08:04,611 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:08:04,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 05:08:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:08:05,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-28 05:08:05,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:08:06,523 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 [2024-11-28 05:08:06,630 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:08:06,630 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 [2024-11-28 05:08:06,791 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 [2024-11-28 05:08:06,832 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 [2024-11-28 05:08:07,444 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 [2024-11-28 05:08:07,465 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 [2024-11-28 05:08:11,883 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:08:11,883 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 [2024-11-28 05:08:11,905 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 [2024-11-28 05:08:12,520 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:08:12,521 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 [2024-11-28 05:08:12,581 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 [2024-11-28 05:08:13,099 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:08:13,100 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 [2024-11-28 05:08:13,160 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 [2024-11-28 05:08:13,277 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 [2024-11-28 05:08:13,330 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 [2024-11-28 05:08:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:08:13,526 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:08:14,163 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6016 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6016) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6015 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6016 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6016) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6015) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 05:08:14,239 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_6015 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6016 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_6016) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_6015) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_6016 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_6016) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv8 32)) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2024-11-28 05:08:14,378 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6015 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6016 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6013 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6014 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6014))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6013) .cse0 v_ArrVal_6016) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_6015) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_6016 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6013 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6014 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6013) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6014) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6016) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd (_ bv12 32) .cse3)))))) is different from false [2024-11-28 05:08:14,473 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6015 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6016 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6013 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6014 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_6014))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_6013) .cse1 v_ArrVal_6016) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_6015) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_6016 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6013 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6014 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_6013) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_6014) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6016) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-28 05:08:18,181 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6107 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6016 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6013 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6014 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6108))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6107) .cse1 v_ArrVal_6013) (select (select (store .cse2 .cse1 v_ArrVal_6014) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_6016))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6107 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6015 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6016 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6013 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6014 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6108))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_6014))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6107) .cse4 v_ArrVal_6013) .cse5 v_ArrVal_6016) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_6015) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-28 05:08:18,201 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:08:18,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098976803] [2024-11-28 05:08:18,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098976803] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:08:18,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1535205209] [2024-11-28 05:08:18,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:08:18,202 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:08:18,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:08:18,203 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:08:18,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2024-11-28 05:08:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:08:42,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-28 05:08:42,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:08:42,391 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 [2024-11-28 05:08:43,535 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 [2024-11-28 05:08:43,664 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:08:43,665 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 [2024-11-28 05:08:43,710 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 [2024-11-28 05:08:43,732 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 [2024-11-28 05:08:44,132 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 [2024-11-28 05:08:44,155 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 [2024-11-28 05:08:48,374 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:08:48,375 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 [2024-11-28 05:08:48,406 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 [2024-11-28 05:08:48,816 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:08:48,816 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 [2024-11-28 05:08:48,879 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 [2024-11-28 05:08:49,179 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 05:08:49,179 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 [2024-11-28 05:08:49,203 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 [2024-11-28 05:08:49,378 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 [2024-11-28 05:08:49,419 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 [2024-11-28 05:08:49,440 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 05:08:49,440 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:08:49,652 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6595 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_6595 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd (_ bv12 32) .cse1)))))) is different from false [2024-11-28 05:08:49,735 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6595 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6595 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 05:08:49,914 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6595 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6593))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6592) .cse0 v_ArrVal_6595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_6594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_6592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6595 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6592) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6593) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd (_ bv12 32) .cse3)))))) is different from false [2024-11-28 05:08:50,034 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6595 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6592) (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6593) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6595 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6593))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6592) .cse3 v_ArrVal_6595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_6594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-28 05:08:53,761 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6595 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6687))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6686) .cse1 v_ArrVal_6592) (select (select (store .cse2 .cse1 v_ArrVal_6593) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_6595))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6592 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6595 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6687))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_6593))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6686) .cse4 v_ArrVal_6592) .cse5 v_ArrVal_6595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_6594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-28 05:08:53,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1535205209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:08:53,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:08:53,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-11-28 05:08:53,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110991245] [2024-11-28 05:08:53,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:08:53,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:08:53,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:08:53,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:08:53,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=134, Unknown=10, NotChecked=310, Total=506 [2024-11-28 05:08:53,788 INFO L87 Difference]: Start difference. First operand 3379 states and 4430 transitions. Second operand has 11 states, 9 states have (on average 9.666666666666666) internal successors, (87), 11 states have internal predecessors, (87), 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) [2024-11-28 05:10:36,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:36,641 INFO L93 Difference]: Finished difference Result 3378 states and 4428 transitions. [2024-11-28 05:10:36,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:10:36,642 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.666666666666666) internal successors, (87), 11 states have internal predecessors, (87), 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 127 [2024-11-28 05:10:36,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:36,649 INFO L225 Difference]: With dead ends: 3378 [2024-11-28 05:10:36,649 INFO L226 Difference]: Without dead ends: 3378 [2024-11-28 05:10:36,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 248 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=90, Invalid=282, Unknown=10, NotChecked=430, Total=812 [2024-11-28 05:10:36,649 INFO L435 NwaCegarLoop]: 1232 mSDtfsCounter, 1647 mSDsluCounter, 5508 mSDsCounter, 0 mSdLazyCounter, 9376 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 6740 SdHoareTripleChecker+Invalid, 9386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 9376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:36,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1656 Valid, 6740 Invalid, 9386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 9376 Invalid, 0 Unknown, 0 Unchecked, 101.4s Time] [2024-11-28 05:10:36,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3378 states. [2024-11-28 05:10:36,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3378 to 3378. [2024-11-28 05:10:36,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3378 states, 2608 states have (on average 1.6759969325153374) internal successors, (4371), 3349 states have internal predecessors, (4371), 27 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-28 05:10:36,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 4428 transitions. [2024-11-28 05:10:36,689 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 4428 transitions. Word has length 127 [2024-11-28 05:10:36,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:36,689 INFO L471 AbstractCegarLoop]: Abstraction has 3378 states and 4428 transitions. [2024-11-28 05:10:36,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.666666666666666) internal successors, (87), 11 states have internal predecessors, (87), 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) [2024-11-28 05:10:36,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 4428 transitions. [2024-11-28 05:10:36,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-28 05:10:36,691 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:36,692 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:36,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-28 05:10:36,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:37,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 05:10:37,092 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-28 05:10:37,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:37,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1921468494, now seen corresponding path program 1 times [2024-11-28 05:10:37,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:37,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032170215] [2024-11-28 05:10:37,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:37,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:37,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:37,095 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:37,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4548cd4-7618-4e60-8520-8a33d7c2784d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-28 05:10:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:37,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 61 conjuncts are in the unsatisfiable core