./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:08:43,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:08:43,488 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 23:08:43,502 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:08:43,503 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:08:43,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:08:43,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:08:43,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:08:43,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:08:43,555 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:08:43,557 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:08:43,558 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:08:43,558 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:08:43,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:08:43,560 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:08:43,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:08:43,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:08:43,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:08:43,562 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 23:08:43,562 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 23:08:43,563 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 23:08:43,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:08:43,564 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 23:08:43,564 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:08:43,565 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:08:43,565 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:08:43,566 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:08:43,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:08:43,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:08:43,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:08:43,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:08:43,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:08:43,569 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:08:43,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:08:43,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:08:43,570 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:08:43,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:08:43,571 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:08:43,571 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 [2023-11-06 23:08:43,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:08:43,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:08:43,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:08:43,953 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:08:43,954 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:08:43,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2023-11-06 23:08:47,047 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:08:47,338 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:08:47,349 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2023-11-06 23:08:47,380 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/data/f4d616b52/e2bc04418087441e9d67d905d089870c/FLAGdc91b389b [2023-11-06 23:08:47,396 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/data/f4d616b52/e2bc04418087441e9d67d905d089870c [2023-11-06 23:08:47,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:08:47,403 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:08:47,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:08:47,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:08:47,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:08:47,419 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:08:47" (1/1) ... [2023-11-06 23:08:47,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d48375b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:47, skipping insertion in model container [2023-11-06 23:08:47,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:08:47" (1/1) ... [2023-11-06 23:08:47,500 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:08:48,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:08:48,111 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-06 23:08:48,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5a7119d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:48, skipping insertion in model container [2023-11-06 23:08:48,112 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:08:48,112 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 23:08:48,114 INFO L158 Benchmark]: Toolchain (without parser) took 710.63ms. Allocated memory is still 182.5MB. Free memory was 135.3MB in the beginning and 120.2MB in the end (delta: 15.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 23:08:48,116 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory was 75.8MB in the beginning and 75.6MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:08:48,117 INFO L158 Benchmark]: CACSL2BoogieTranslator took 705.76ms. Allocated memory is still 182.5MB. Free memory was 135.3MB in the beginning and 120.2MB in the end (delta: 15.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 23:08:48,119 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory was 75.8MB in the beginning and 75.6MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 705.76ms. Allocated memory is still 182.5MB. Free memory was 135.3MB in the beginning and 120.2MB in the end (delta: 15.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:08:50,739 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:08:50,866 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 23:08:50,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:08:50,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:08:50,938 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:08:50,939 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:08:50,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:08:50,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:08:50,946 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:08:50,947 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:08:50,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:08:50,948 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:08:50,950 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:08:50,951 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:08:50,951 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:08:50,952 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:08:50,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:08:50,953 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 23:08:50,954 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 23:08:50,954 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 23:08:50,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:08:50,956 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 23:08:50,956 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 23:08:50,957 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 23:08:50,957 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:08:50,957 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:08:50,958 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:08:50,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:08:50,960 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:08:50,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:08:50,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:08:50,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:08:50,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:08:50,963 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 23:08:50,963 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 23:08:50,963 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:08:50,964 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:08:50,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:08:50,965 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 23:08:50,966 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:08:50,966 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 [2023-11-06 23:08:51,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:08:51,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:08:51,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:08:51,488 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:08:51,489 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:08:51,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2023-11-06 23:08:54,808 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:08:55,205 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:08:55,208 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2023-11-06 23:08:55,237 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/data/8dee43c5a/89d3cf2176054c5795b4becb032e389d/FLAG535b85657 [2023-11-06 23:08:55,254 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/data/8dee43c5a/89d3cf2176054c5795b4becb032e389d [2023-11-06 23:08:55,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:08:55,258 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:08:55,260 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:08:55,260 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:08:55,266 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:08:55,267 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:08:55" (1/1) ... [2023-11-06 23:08:55,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f66c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:55, skipping insertion in model container [2023-11-06 23:08:55,268 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:08:55" (1/1) ... [2023-11-06 23:08:55,323 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:08:55,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:08:55,934 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 23:08:55,970 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:08:56,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:08:56,098 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:08:56,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:08:56,259 WARN L672 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:08:56,267 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:08:56,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:56 WrapperNode [2023-11-06 23:08:56,269 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:08:56,270 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:08:56,270 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:08:56,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:08:56,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:56" (1/1) ... [2023-11-06 23:08:56,309 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:56" (1/1) ... [2023-11-06 23:08:56,355 INFO L138 Inliner]: procedures = 175, calls = 119, calls flagged for inlining = 30, calls inlined = 15, statements flattened = 199 [2023-11-06 23:08:56,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:08:56,356 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:08:56,356 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:08:56,356 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:08:56,366 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:56" (1/1) ... [2023-11-06 23:08:56,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:56" (1/1) ... [2023-11-06 23:08:56,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:56" (1/1) ... [2023-11-06 23:08:56,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:56" (1/1) ... [2023-11-06 23:08:56,424 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:56" (1/1) ... [2023-11-06 23:08:56,440 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:56" (1/1) ... [2023-11-06 23:08:56,443 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:56" (1/1) ... [2023-11-06 23:08:56,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:56" (1/1) ... [2023-11-06 23:08:56,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:08:56,460 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:08:56,461 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:08:56,461 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:08:56,462 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:56" (1/1) ... [2023-11-06 23:08:56,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:08:56,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:08:56,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:08:56,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:08:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 23:08:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-11-06 23:08:56,541 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-11-06 23:08:56,541 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-11-06 23:08:56,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-11-06 23:08:56,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-06 23:08:56,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-06 23:08:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:08:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:08:56,543 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2023-11-06 23:08:56,545 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2023-11-06 23:08:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:08:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 23:08:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 23:08:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 23:08:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:08:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 23:08:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-11-06 23:08:56,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-11-06 23:08:56,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-06 23:08:56,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-06 23:08:56,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:08:56,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:08:56,786 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:08:56,789 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:08:57,667 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:08:57,676 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:08:57,677 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 23:08:57,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:08:57 BoogieIcfgContainer [2023-11-06 23:08:57,679 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:08:57,682 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:08:57,682 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:08:57,685 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:08:57,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:08:55" (1/3) ... [2023-11-06 23:08:57,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb6111c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:08:57, skipping insertion in model container [2023-11-06 23:08:57,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:08:56" (2/3) ... [2023-11-06 23:08:57,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb6111c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:08:57, skipping insertion in model container [2023-11-06 23:08:57,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:08:57" (3/3) ... [2023-11-06 23:08:57,688 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test23_2.i [2023-11-06 23:08:57,709 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:08:57,709 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2023-11-06 23:08:57,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:08:57,769 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@50ffac6d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:08:57,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2023-11-06 23:08:57,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 111 states have (on average 1.837837837837838) internal successors, (204), 190 states have internal predecessors, (204), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-06 23:08:57,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 23:08:57,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:57,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:57,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:08:57,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:57,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1113514230, now seen corresponding path program 1 times [2023-11-06 23:08:57,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:08:57,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397221660] [2023-11-06 23:08:57,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:57,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:08:57,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:08:57,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:08:57,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 23:08:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:57,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:08:57,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:58,091 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 23:08:58,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:08:58,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:08:58,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:08:58,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397221660] [2023-11-06 23:08:58,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397221660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:08:58,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:08:58,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:08:58,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979145122] [2023-11-06 23:08:58,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:08:58,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:08:58,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:08:58,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:08:58,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:08:58,242 INFO L87 Difference]: Start difference. First operand has 205 states, 111 states have (on average 1.837837837837838) internal successors, (204), 190 states have internal predecessors, (204), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 23:08:59,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:08:59,349 INFO L93 Difference]: Finished difference Result 222 states and 237 transitions. [2023-11-06 23:08:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:08:59,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-06 23:08:59,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:08:59,370 INFO L225 Difference]: With dead ends: 222 [2023-11-06 23:08:59,371 INFO L226 Difference]: Without dead ends: 220 [2023-11-06 23:08:59,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:08:59,377 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 18 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:08:59,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 840 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:08:59,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-06 23:08:59,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 212. [2023-11-06 23:08:59,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 117 states have (on average 1.7863247863247864) internal successors, (209), 195 states have internal predecessors, (209), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-06 23:08:59,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 228 transitions. [2023-11-06 23:08:59,470 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 228 transitions. Word has length 12 [2023-11-06 23:08:59,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:08:59,471 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 228 transitions. [2023-11-06 23:08:59,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 23:08:59,471 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 228 transitions. [2023-11-06 23:08:59,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 23:08:59,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:08:59,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:08:59,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:08:59,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:08:59,686 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:08:59,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:08:59,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1113514231, now seen corresponding path program 1 times [2023-11-06 23:08:59,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:08:59,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834633045] [2023-11-06 23:08:59,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:08:59,688 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:08:59,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:08:59,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:08:59,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 23:08:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:08:59,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 23:08:59,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:08:59,827 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 23:09:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:00,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:00,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:00,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834633045] [2023-11-06 23:09:00,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834633045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:00,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:00,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:09:00,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399296073] [2023-11-06 23:09:00,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:00,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:09:00,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:00,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:09:00,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:09:00,013 INFO L87 Difference]: Start difference. First operand 212 states and 228 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 23:09:01,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:01,148 INFO L93 Difference]: Finished difference Result 217 states and 231 transitions. [2023-11-06 23:09:01,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:09:01,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-06 23:09:01,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:01,151 INFO L225 Difference]: With dead ends: 217 [2023-11-06 23:09:01,151 INFO L226 Difference]: Without dead ends: 217 [2023-11-06 23:09:01,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:09:01,153 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 15 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:01,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1099 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:09:01,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-06 23:09:01,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 212. [2023-11-06 23:09:01,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 117 states have (on average 1.7692307692307692) internal successors, (207), 195 states have internal predecessors, (207), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-06 23:09:01,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 226 transitions. [2023-11-06 23:09:01,172 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 226 transitions. Word has length 12 [2023-11-06 23:09:01,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:01,173 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 226 transitions. [2023-11-06 23:09:01,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 23:09:01,173 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 226 transitions. [2023-11-06 23:09:01,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 23:09:01,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:01,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:01,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:01,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:01,375 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:09:01,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:01,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1438642731, now seen corresponding path program 1 times [2023-11-06 23:09:01,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:01,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227301342] [2023-11-06 23:09:01,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:01,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:01,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:01,378 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:01,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-06 23:09:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:01,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:09:01,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:01,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:01,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:01,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227301342] [2023-11-06 23:09:01,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227301342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:01,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:01,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:09:01,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300148918] [2023-11-06 23:09:01,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:01,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:09:01,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:01,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:09:01,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:01,557 INFO L87 Difference]: Start difference. First operand 212 states and 226 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 23:09:01,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:01,603 INFO L93 Difference]: Finished difference Result 204 states and 217 transitions. [2023-11-06 23:09:01,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:09:01,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-06 23:09:01,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:01,606 INFO L225 Difference]: With dead ends: 204 [2023-11-06 23:09:01,606 INFO L226 Difference]: Without dead ends: 204 [2023-11-06 23:09:01,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:01,609 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 0 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:01,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 837 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:09:01,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-06 23:09:01,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2023-11-06 23:09:01,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 113 states have (on average 1.761061946902655) internal successors, (199), 187 states have internal predecessors, (199), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-06 23:09:01,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 216 transitions. [2023-11-06 23:09:01,635 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 216 transitions. Word has length 12 [2023-11-06 23:09:01,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:01,635 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 216 transitions. [2023-11-06 23:09:01,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 23:09:01,636 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 216 transitions. [2023-11-06 23:09:01,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 23:09:01,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:01,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:01,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:01,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:01,852 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:09:01,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:01,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1113428854, now seen corresponding path program 1 times [2023-11-06 23:09:01,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:01,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227564840] [2023-11-06 23:09:01,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:01,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:01,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:01,865 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:01,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-06 23:09:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:01,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:09:01,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:01,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:01,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:01,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227564840] [2023-11-06 23:09:01,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227564840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:01,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:01,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:09:01,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942290096] [2023-11-06 23:09:01,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:01,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:09:01,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:01,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:09:01,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:01,982 INFO L87 Difference]: Start difference. First operand 203 states and 216 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 23:09:02,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:02,029 INFO L93 Difference]: Finished difference Result 204 states and 216 transitions. [2023-11-06 23:09:02,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:09:02,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2023-11-06 23:09:02,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:02,031 INFO L225 Difference]: With dead ends: 204 [2023-11-06 23:09:02,031 INFO L226 Difference]: Without dead ends: 204 [2023-11-06 23:09:02,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:02,033 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 108 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:02,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 708 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:09:02,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-06 23:09:02,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2023-11-06 23:09:02,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 113 states have (on average 1.752212389380531) internal successors, (198), 187 states have internal predecessors, (198), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-06 23:09:02,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 215 transitions. [2023-11-06 23:09:02,041 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 215 transitions. Word has length 12 [2023-11-06 23:09:02,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:02,041 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 215 transitions. [2023-11-06 23:09:02,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 23:09:02,042 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 215 transitions. [2023-11-06 23:09:02,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-06 23:09:02,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:02,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:02,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:02,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:02,262 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:09:02,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:02,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1438728107, now seen corresponding path program 1 times [2023-11-06 23:09:02,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:02,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512574778] [2023-11-06 23:09:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:02,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:02,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:02,264 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:02,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-06 23:09:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:02,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:09:02,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:02,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:02,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:02,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:02,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512574778] [2023-11-06 23:09:02,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512574778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:02,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:02,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:09:02,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785730070] [2023-11-06 23:09:02,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:02,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:09:02,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:02,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:09:02,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:02,378 INFO L87 Difference]: Start difference. First operand 203 states and 215 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 23:09:02,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:02,430 INFO L93 Difference]: Finished difference Result 208 states and 219 transitions. [2023-11-06 23:09:02,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:09:02,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 12 [2023-11-06 23:09:02,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:02,439 INFO L225 Difference]: With dead ends: 208 [2023-11-06 23:09:02,439 INFO L226 Difference]: Without dead ends: 208 [2023-11-06 23:09:02,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:09:02,440 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 105 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:02,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 720 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:09:02,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-06 23:09:02,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 205. [2023-11-06 23:09:02,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 115 states have (on average 1.7391304347826086) internal successors, (200), 189 states have internal predecessors, (200), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-06 23:09:02,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 217 transitions. [2023-11-06 23:09:02,450 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 217 transitions. Word has length 12 [2023-11-06 23:09:02,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:02,450 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 217 transitions. [2023-11-06 23:09:02,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 23:09:02,451 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 217 transitions. [2023-11-06 23:09:02,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 23:09:02,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:02,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:02,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:02,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:02,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:09:02,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:02,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1650878244, now seen corresponding path program 1 times [2023-11-06 23:09:02,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:02,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421742092] [2023-11-06 23:09:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:02,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:02,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:02,669 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:02,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-06 23:09:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:02,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:09:02,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:02,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:02,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:02,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:02,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421742092] [2023-11-06 23:09:02,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421742092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:02,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:02,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:09:02,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909034100] [2023-11-06 23:09:02,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:02,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:02,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:02,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:02,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:02,797 INFO L87 Difference]: Start difference. First operand 205 states and 217 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 23:09:03,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:03,294 INFO L93 Difference]: Finished difference Result 217 states and 231 transitions. [2023-11-06 23:09:03,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:09:03,295 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), 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 13 [2023-11-06 23:09:03,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:03,297 INFO L225 Difference]: With dead ends: 217 [2023-11-06 23:09:03,297 INFO L226 Difference]: Without dead ends: 209 [2023-11-06 23:09:03,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:03,298 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 51 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:03,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 382 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 23:09:03,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-06 23:09:03,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2023-11-06 23:09:03,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 110 states have (on average 1.7636363636363637) internal successors, (194), 184 states have internal predecessors, (194), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-06 23:09:03,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 210 transitions. [2023-11-06 23:09:03,305 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 210 transitions. Word has length 13 [2023-11-06 23:09:03,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:03,306 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 210 transitions. [2023-11-06 23:09:03,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 23:09:03,306 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 210 transitions. [2023-11-06 23:09:03,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 23:09:03,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:03,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:03,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:03,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:03,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:09:03,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:03,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1165844703, now seen corresponding path program 1 times [2023-11-06 23:09:03,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:03,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984225786] [2023-11-06 23:09:03,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:03,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:03,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:03,522 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:03,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-06 23:09:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:03,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 23:09:03,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:03,825 WARN L861 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-11-06 23:09:03,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:03,895 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 23:09:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:04,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:04,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:04,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984225786] [2023-11-06 23:09:04,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984225786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:04,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:04,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:09:04,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446905931] [2023-11-06 23:09:04,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:04,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:09:04,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:04,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:09:04,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2023-11-06 23:09:04,007 INFO L87 Difference]: Start difference. First operand 199 states and 210 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:09:05,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:05,145 INFO L93 Difference]: Finished difference Result 250 states and 264 transitions. [2023-11-06 23:09:05,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:09:05,145 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-11-06 23:09:05,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:05,148 INFO L225 Difference]: With dead ends: 250 [2023-11-06 23:09:05,148 INFO L226 Difference]: Without dead ends: 250 [2023-11-06 23:09:05,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=76, Unknown=1, NotChecked=18, Total=132 [2023-11-06 23:09:05,149 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 497 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 262 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:05,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 211 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 422 Invalid, 0 Unknown, 262 Unchecked, 1.0s Time] [2023-11-06 23:09:05,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-06 23:09:05,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 208. [2023-11-06 23:09:05,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 119 states have (on average 1.7394957983193278) internal successors, (207), 192 states have internal predecessors, (207), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-06 23:09:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 225 transitions. [2023-11-06 23:09:05,159 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 225 transitions. Word has length 16 [2023-11-06 23:09:05,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:05,159 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 225 transitions. [2023-11-06 23:09:05,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:09:05,160 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 225 transitions. [2023-11-06 23:09:05,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 23:09:05,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:05,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:05,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:05,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:05,375 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:09:05,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:05,375 INFO L85 PathProgramCache]: Analyzing trace with hash -2093398748, now seen corresponding path program 1 times [2023-11-06 23:09:05,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:05,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230361738] [2023-11-06 23:09:05,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:05,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:05,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:05,377 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:05,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-06 23:09:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:05,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:09:05,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:05,550 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 23:09:05,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:05,593 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:05,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:05,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230361738] [2023-11-06 23:09:05,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230361738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:05,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:05,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:09:05,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765484501] [2023-11-06 23:09:05,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:05,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:09:05,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:05,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:09:05,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:09:05,596 INFO L87 Difference]: Start difference. First operand 208 states and 225 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:09:06,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:06,406 INFO L93 Difference]: Finished difference Result 264 states and 288 transitions. [2023-11-06 23:09:06,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:09:06,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-11-06 23:09:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:06,409 INFO L225 Difference]: With dead ends: 264 [2023-11-06 23:09:06,410 INFO L226 Difference]: Without dead ends: 264 [2023-11-06 23:09:06,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:09:06,410 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 70 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:06,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 640 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 23:09:06,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-06 23:09:06,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 236. [2023-11-06 23:09:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 149 states have (on average 1.7583892617449663) internal successors, (262), 220 states have internal predecessors, (262), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-06 23:09:06,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 280 transitions. [2023-11-06 23:09:06,421 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 280 transitions. Word has length 25 [2023-11-06 23:09:06,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:06,421 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 280 transitions. [2023-11-06 23:09:06,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:09:06,422 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 280 transitions. [2023-11-06 23:09:06,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 23:09:06,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:06,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:06,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:06,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:06,634 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:09:06,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:06,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2093398747, now seen corresponding path program 1 times [2023-11-06 23:09:06,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:06,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126175069] [2023-11-06 23:09:06,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:06,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:06,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:06,637 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:06,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-06 23:09:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:06,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 23:09:06,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:06,774 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 23:09:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:06,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:06,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:06,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126175069] [2023-11-06 23:09:06,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126175069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:06,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:06,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:09:06,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665815366] [2023-11-06 23:09:06,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:06,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:09:06,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:06,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:09:06,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:09:06,875 INFO L87 Difference]: Start difference. First operand 236 states and 280 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:09:07,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:07,914 INFO L93 Difference]: Finished difference Result 268 states and 292 transitions. [2023-11-06 23:09:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:09:07,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-11-06 23:09:07,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:07,917 INFO L225 Difference]: With dead ends: 268 [2023-11-06 23:09:07,917 INFO L226 Difference]: Without dead ends: 268 [2023-11-06 23:09:07,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:09:07,918 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 75 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:07,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 647 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:09:07,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-06 23:09:07,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 238. [2023-11-06 23:09:07,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 152 states have (on average 1.736842105263158) internal successors, (264), 221 states have internal predecessors, (264), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-06 23:09:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 285 transitions. [2023-11-06 23:09:07,928 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 285 transitions. Word has length 25 [2023-11-06 23:09:07,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:07,928 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 285 transitions. [2023-11-06 23:09:07,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:09:07,929 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 285 transitions. [2023-11-06 23:09:07,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 23:09:07,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:07,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:07,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:08,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:08,142 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:09:08,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:08,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1711433272, now seen corresponding path program 1 times [2023-11-06 23:09:08,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:08,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159215715] [2023-11-06 23:09:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:08,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:08,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:08,144 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:08,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-06 23:09:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:08,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:09:08,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:08,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:08,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:08,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:08,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159215715] [2023-11-06 23:09:08,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159215715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:08,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:08,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:09:08,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236424735] [2023-11-06 23:09:08,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:08,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:09:08,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:08,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:09:08,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:09:08,309 INFO L87 Difference]: Start difference. First operand 238 states and 285 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:09:08,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:08,430 INFO L93 Difference]: Finished difference Result 238 states and 284 transitions. [2023-11-06 23:09:08,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:09:08,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-11-06 23:09:08,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:08,433 INFO L225 Difference]: With dead ends: 238 [2023-11-06 23:09:08,433 INFO L226 Difference]: Without dead ends: 238 [2023-11-06 23:09:08,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:09:08,434 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 90 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:08,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 858 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:09:08,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-06 23:09:08,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-11-06 23:09:08,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 152 states have (on average 1.730263157894737) internal successors, (263), 221 states have internal predecessors, (263), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-06 23:09:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 284 transitions. [2023-11-06 23:09:08,446 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 284 transitions. Word has length 27 [2023-11-06 23:09:08,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:08,446 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 284 transitions. [2023-11-06 23:09:08,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:09:08,446 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 284 transitions. [2023-11-06 23:09:08,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 23:09:08,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:08,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:08,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:08,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:08,664 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:09:08,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:08,664 INFO L85 PathProgramCache]: Analyzing trace with hash -386500720, now seen corresponding path program 1 times [2023-11-06 23:09:08,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:08,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490164725] [2023-11-06 23:09:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:08,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:08,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:08,666 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:08,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-06 23:09:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:08,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 23:09:08,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:08,927 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 23:09:08,998 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 23:09:08,998 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 23:09:09,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:09,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:09,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:09,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490164725] [2023-11-06 23:09:09,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490164725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:09,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:09,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:09:09,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472255113] [2023-11-06 23:09:09,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:09,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:09:09,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:09,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:09:09,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:09:09,090 INFO L87 Difference]: Start difference. First operand 238 states and 284 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 23:09:10,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:10,256 INFO L93 Difference]: Finished difference Result 249 states and 291 transitions. [2023-11-06 23:09:10,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:09:10,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-11-06 23:09:10,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:10,259 INFO L225 Difference]: With dead ends: 249 [2023-11-06 23:09:10,259 INFO L226 Difference]: Without dead ends: 249 [2023-11-06 23:09:10,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:09:10,260 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 141 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:10,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 560 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 23:09:10,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-11-06 23:09:10,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 233. [2023-11-06 23:09:10,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 152 states have (on average 1.6644736842105263) internal successors, (253), 216 states have internal predecessors, (253), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-06 23:09:10,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 274 transitions. [2023-11-06 23:09:10,270 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 274 transitions. Word has length 33 [2023-11-06 23:09:10,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:10,270 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 274 transitions. [2023-11-06 23:09:10,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 23:09:10,271 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 274 transitions. [2023-11-06 23:09:10,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 23:09:10,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:10,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:10,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:10,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:10,484 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:09:10,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:10,485 INFO L85 PathProgramCache]: Analyzing trace with hash -386500719, now seen corresponding path program 1 times [2023-11-06 23:09:10,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:10,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76062663] [2023-11-06 23:09:10,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:10,485 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:10,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:10,486 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:10,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-06 23:09:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:10,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 23:09:10,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:10,697 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 23:09:10,705 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 23:09:10,755 WARN L861 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|) (_ bv0 1)) (= |c_#length| (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| (select |c_#length| |ldv_zalloc_#t~malloc13#1.base|))))) is different from true [2023-11-06 23:09:10,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:10,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 23:09:10,815 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 23:09:10,815 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 23:09:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:10,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:10,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:10,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76062663] [2023-11-06 23:09:10,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76062663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:10,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:10,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:09:10,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43602156] [2023-11-06 23:09:10,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:10,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:09:10,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:10,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:09:10,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2023-11-06 23:09:10,908 INFO L87 Difference]: Start difference. First operand 233 states and 274 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 23:09:12,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:12,004 INFO L93 Difference]: Finished difference Result 282 states and 308 transitions. [2023-11-06 23:09:12,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:09:12,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-11-06 23:09:12,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:12,007 INFO L225 Difference]: With dead ends: 282 [2023-11-06 23:09:12,007 INFO L226 Difference]: Without dead ends: 282 [2023-11-06 23:09:12,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=37, Unknown=1, NotChecked=12, Total=72 [2023-11-06 23:09:12,008 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 172 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 314 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:12,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 390 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 406 Invalid, 0 Unknown, 314 Unchecked, 1.0s Time] [2023-11-06 23:09:12,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-06 23:09:12,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 233. [2023-11-06 23:09:12,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 152 states have (on average 1.631578947368421) internal successors, (248), 216 states have internal predecessors, (248), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-06 23:09:12,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 269 transitions. [2023-11-06 23:09:12,023 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 269 transitions. Word has length 33 [2023-11-06 23:09:12,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:12,025 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 269 transitions. [2023-11-06 23:09:12,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 23:09:12,026 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 269 transitions. [2023-11-06 23:09:12,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 23:09:12,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:12,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:12,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:12,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:12,239 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:09:12,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:12,240 INFO L85 PathProgramCache]: Analyzing trace with hash 563151669, now seen corresponding path program 1 times [2023-11-06 23:09:12,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:12,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404649147] [2023-11-06 23:09:12,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:12,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:12,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:12,242 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:12,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-06 23:09:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:12,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:09:12,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:12,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:12,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:12,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:12,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404649147] [2023-11-06 23:09:12,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404649147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:12,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:12,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:09:12,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284834278] [2023-11-06 23:09:12,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:12,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:09:12,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:12,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:09:12,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:09:12,946 INFO L87 Difference]: Start difference. First operand 233 states and 269 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 23:09:13,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:13,571 INFO L93 Difference]: Finished difference Result 231 states and 266 transitions. [2023-11-06 23:09:13,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:09:13,572 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2023-11-06 23:09:13,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:13,574 INFO L225 Difference]: With dead ends: 231 [2023-11-06 23:09:13,574 INFO L226 Difference]: Without dead ends: 231 [2023-11-06 23:09:13,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:09:13,575 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 228 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:13,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 723 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 23:09:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-11-06 23:09:13,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2023-11-06 23:09:13,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 152 states have (on average 1.611842105263158) internal successors, (245), 214 states have internal predecessors, (245), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-06 23:09:13,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 266 transitions. [2023-11-06 23:09:13,584 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 266 transitions. Word has length 36 [2023-11-06 23:09:13,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:13,584 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 266 transitions. [2023-11-06 23:09:13,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 23:09:13,585 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 266 transitions. [2023-11-06 23:09:13,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 23:09:13,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:13,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:13,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:13,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:13,798 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:09:13,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:13,799 INFO L85 PathProgramCache]: Analyzing trace with hash 563151641, now seen corresponding path program 1 times [2023-11-06 23:09:13,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:13,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362359432] [2023-11-06 23:09:13,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:13,799 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:13,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:13,800 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:13,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-06 23:09:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:13,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:09:13,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:14,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:14,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:14,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362359432] [2023-11-06 23:09:14,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362359432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:14,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:14,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:09:14,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128854488] [2023-11-06 23:09:14,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:14,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:14,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:14,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:14,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:14,011 INFO L87 Difference]: Start difference. First operand 231 states and 266 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:09:14,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:14,047 INFO L93 Difference]: Finished difference Result 272 states and 310 transitions. [2023-11-06 23:09:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:09:14,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2023-11-06 23:09:14,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:14,050 INFO L225 Difference]: With dead ends: 272 [2023-11-06 23:09:14,050 INFO L226 Difference]: Without dead ends: 272 [2023-11-06 23:09:14,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:14,051 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 36 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:14,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 577 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:09:14,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-11-06 23:09:14,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 235. [2023-11-06 23:09:14,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 156 states have (on average 1.5961538461538463) internal successors, (249), 218 states have internal predecessors, (249), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-06 23:09:14,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 270 transitions. [2023-11-06 23:09:14,061 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 270 transitions. Word has length 36 [2023-11-06 23:09:14,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:14,062 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 270 transitions. [2023-11-06 23:09:14,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:09:14,062 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 270 transitions. [2023-11-06 23:09:14,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 23:09:14,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:14,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:14,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:14,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:14,273 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:09:14,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:14,273 INFO L85 PathProgramCache]: Analyzing trace with hash 515315048, now seen corresponding path program 1 times [2023-11-06 23:09:14,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:14,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020281041] [2023-11-06 23:09:14,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:14,274 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:14,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:14,275 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:14,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-06 23:09:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:14,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:09:14,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:14,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:14,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:14,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020281041] [2023-11-06 23:09:14,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020281041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:14,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:14,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:09:14,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074705137] [2023-11-06 23:09:14,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:14,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:14,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:14,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:14,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:14,469 INFO L87 Difference]: Start difference. First operand 235 states and 270 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:09:14,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:14,499 INFO L93 Difference]: Finished difference Result 258 states and 295 transitions. [2023-11-06 23:09:14,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:09:14,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2023-11-06 23:09:14,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:14,501 INFO L225 Difference]: With dead ends: 258 [2023-11-06 23:09:14,502 INFO L226 Difference]: Without dead ends: 258 [2023-11-06 23:09:14,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:14,503 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 23 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:14,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 576 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:09:14,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-11-06 23:09:14,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 237. [2023-11-06 23:09:14,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 158 states have (on average 1.5886075949367089) internal successors, (251), 220 states have internal predecessors, (251), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-06 23:09:14,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 272 transitions. [2023-11-06 23:09:14,512 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 272 transitions. Word has length 40 [2023-11-06 23:09:14,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:14,512 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 272 transitions. [2023-11-06 23:09:14,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:09:14,513 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 272 transitions. [2023-11-06 23:09:14,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-06 23:09:14,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:14,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:14,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:14,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:14,731 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:09:14,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:14,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1296596367, now seen corresponding path program 1 times [2023-11-06 23:09:14,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:14,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856143058] [2023-11-06 23:09:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:14,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:14,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:14,733 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:14,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-06 23:09:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:14,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 23:09:14,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:15,180 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 23:09:15,180 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 23:09:15,687 INFO L322 Elim1Store]: treesize reduction 28, result has 45.1 percent of original size [2023-11-06 23:09:15,688 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 33 [2023-11-06 23:09:16,024 INFO L322 Elim1Store]: treesize reduction 28, result has 60.6 percent of original size [2023-11-06 23:09:16,024 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 64 [2023-11-06 23:09:17,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:17,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:17,259 INFO L322 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2023-11-06 23:09:17,259 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 43 [2023-11-06 23:09:17,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:17,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:17,317 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2023-11-06 23:09:17,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:17,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:17,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:17,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856143058] [2023-11-06 23:09:17,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856143058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:17,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:17,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-06 23:09:17,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577395345] [2023-11-06 23:09:17,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:17,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 23:09:17,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:17,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 23:09:17,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-06 23:09:17,461 INFO L87 Difference]: Start difference. First operand 237 states and 272 transitions. Second operand has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:09:21,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:21,537 INFO L93 Difference]: Finished difference Result 306 states and 344 transitions. [2023-11-06 23:09:21,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 23:09:21,541 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2023-11-06 23:09:21,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:21,543 INFO L225 Difference]: With dead ends: 306 [2023-11-06 23:09:21,543 INFO L226 Difference]: Without dead ends: 306 [2023-11-06 23:09:21,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2023-11-06 23:09:21,545 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 381 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:21,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 783 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-06 23:09:21,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-11-06 23:09:21,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 259. [2023-11-06 23:09:21,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 178 states have (on average 1.5842696629213484) internal successors, (282), 238 states have internal predecessors, (282), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-06 23:09:21,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 306 transitions. [2023-11-06 23:09:21,554 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 306 transitions. Word has length 42 [2023-11-06 23:09:21,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:21,554 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 306 transitions. [2023-11-06 23:09:21,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:09:21,555 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 306 transitions. [2023-11-06 23:09:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-06 23:09:21,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:21,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:21,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:21,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:21,769 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:09:21,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:21,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1296596368, now seen corresponding path program 1 times [2023-11-06 23:09:21,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:21,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139477022] [2023-11-06 23:09:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:21,770 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:21,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:21,772 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:21,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-06 23:09:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:21,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-06 23:09:21,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:22,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:22,212 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 23:09:22,243 INFO L322 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-11-06 23:09:22,243 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-11-06 23:09:22,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:22,624 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 23:09:22,818 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-06 23:09:22,818 INFO L351 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 14 [2023-11-06 23:09:23,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:23,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:23,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:23,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139477022] [2023-11-06 23:09:23,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139477022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:23,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:23,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 23:09:23,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922315907] [2023-11-06 23:09:23,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:23,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 23:09:23,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:23,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 23:09:23,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:09:23,123 INFO L87 Difference]: Start difference. First operand 259 states and 306 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:09:28,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:09:29,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:29,136 INFO L93 Difference]: Finished difference Result 294 states and 334 transitions. [2023-11-06 23:09:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 23:09:29,137 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2023-11-06 23:09:29,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:29,139 INFO L225 Difference]: With dead ends: 294 [2023-11-06 23:09:29,139 INFO L226 Difference]: Without dead ends: 294 [2023-11-06 23:09:29,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2023-11-06 23:09:29,140 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 401 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:29,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 503 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1205 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2023-11-06 23:09:29,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-06 23:09:29,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 257. [2023-11-06 23:09:29,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 178 states have (on average 1.5617977528089888) internal successors, (278), 236 states have internal predecessors, (278), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-06 23:09:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 302 transitions. [2023-11-06 23:09:29,149 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 302 transitions. Word has length 42 [2023-11-06 23:09:29,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:29,150 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 302 transitions. [2023-11-06 23:09:29,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:09:29,150 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 302 transitions. [2023-11-06 23:09:29,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 23:09:29,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:29,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:29,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:29,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:29,363 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:09:29,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:29,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1539801826, now seen corresponding path program 1 times [2023-11-06 23:09:29,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:29,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518138248] [2023-11-06 23:09:29,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:29,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:29,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:29,365 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:29,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-06 23:09:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:29,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:09:29,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:29,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:29,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:29,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518138248] [2023-11-06 23:09:29,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518138248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:29,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:29,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:09:29,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757843296] [2023-11-06 23:09:29,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:29,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:09:29,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:29,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:09:29,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:09:29,588 INFO L87 Difference]: Start difference. First operand 257 states and 302 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:09:29,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:09:29,621 INFO L93 Difference]: Finished difference Result 277 states and 322 transitions. [2023-11-06 23:09:29,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:09:29,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2023-11-06 23:09:29,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:09:29,623 INFO L225 Difference]: With dead ends: 277 [2023-11-06 23:09:29,624 INFO L226 Difference]: Without dead ends: 277 [2023-11-06 23:09:29,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:09:29,626 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 43 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:09:29,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 559 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:09:29,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-06 23:09:29,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 259. [2023-11-06 23:09:29,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 180 states have (on average 1.55) internal successors, (279), 238 states have internal predecessors, (279), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-06 23:09:29,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 303 transitions. [2023-11-06 23:09:29,647 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 303 transitions. Word has length 43 [2023-11-06 23:09:29,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:09:29,648 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 303 transitions. [2023-11-06 23:09:29,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:09:29,648 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 303 transitions. [2023-11-06 23:09:29,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-06 23:09:29,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:09:29,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:09:29,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-06 23:09:29,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:29,861 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONARRAY_INDEX === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:09:29,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:09:29,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1878560601, now seen corresponding path program 1 times [2023-11-06 23:09:29,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:09:29,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038716502] [2023-11-06 23:09:29,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:09:29,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:09:29,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:09:29,864 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:09:29,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-06 23:09:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:09:30,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 23:09:30,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:09:30,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:30,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:30,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:30,249 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 23:09:30,249 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 23:09:30,250 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 23:09:30,251 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2023-11-06 23:09:30,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:30,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:30,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:30,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:30,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:30,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:30,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:30,388 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 91 [2023-11-06 23:09:32,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:32,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:32,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:32,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:32,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:32,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:32,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:32,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:32,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:32,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:32,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:09:32,640 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 66 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 103 [2023-11-06 23:09:32,790 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:09:32,791 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 111 treesize of output 143 [2023-11-06 23:09:37,264 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:09:37,265 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 150 treesize of output 58 [2023-11-06 23:09:37,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:09:37,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:09:37,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:09:37,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038716502] [2023-11-06 23:09:37,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038716502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:09:37,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:09:37,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:09:37,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886295583] [2023-11-06 23:09:37,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:09:37,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:09:37,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:09:37,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:09:37,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=25, Unknown=3, NotChecked=0, Total=42 [2023-11-06 23:09:37,298 INFO L87 Difference]: Start difference. First operand 259 states and 303 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:09:39,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:09:41,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:09:43,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:09:45,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:09:47,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:09:49,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:09:51,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:09:53,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:09:56,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:09:58,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:10:00,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:10:02,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:10:04,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:10:06,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:10:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:06,671 INFO L93 Difference]: Finished difference Result 285 states and 333 transitions. [2023-11-06 23:10:06,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:10:06,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2023-11-06 23:10:06,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:06,675 INFO L225 Difference]: With dead ends: 285 [2023-11-06 23:10:06,675 INFO L226 Difference]: Without dead ends: 285 [2023-11-06 23:10:06,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=24, Invalid=45, Unknown=3, NotChecked=0, Total=72 [2023-11-06 23:10:06,676 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 94 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:06,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 804 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 14 Unknown, 0 Unchecked, 29.1s Time] [2023-11-06 23:10:06,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-06 23:10:06,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 258. [2023-11-06 23:10:06,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 180 states have (on average 1.538888888888889) internal successors, (277), 237 states have internal predecessors, (277), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-06 23:10:06,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 301 transitions. [2023-11-06 23:10:06,686 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 301 transitions. Word has length 44 [2023-11-06 23:10:06,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:06,687 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 301 transitions. [2023-11-06 23:10:06,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:10:06,687 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 301 transitions. [2023-11-06 23:10:06,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-06 23:10:06,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:06,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:06,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-06 23:10:06,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:10:06,905 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:10:06,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:06,905 INFO L85 PathProgramCache]: Analyzing trace with hash -2033242026, now seen corresponding path program 1 times [2023-11-06 23:10:06,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:10:06,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428395663] [2023-11-06 23:10:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:06,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:10:06,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:10:06,907 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:10:06,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-06 23:10:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:07,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-06 23:10:07,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:07,182 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 23:10:07,375 INFO L351 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 [2023-11-06 23:10:07,470 INFO L322 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2023-11-06 23:10:07,470 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 44 [2023-11-06 23:10:07,551 INFO L322 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-11-06 23:10:07,551 INFO L351 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 19 treesize of output 11 [2023-11-06 23:10:07,865 INFO L322 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2023-11-06 23:10:07,866 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 44 [2023-11-06 23:10:08,304 INFO L351 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 44 treesize of output 33 [2023-11-06 23:10:08,610 INFO L351 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 44 treesize of output 33 [2023-11-06 23:10:09,194 INFO L322 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-11-06 23:10:09,194 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 29 [2023-11-06 23:10:09,300 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-06 23:10:09,416 INFO L351 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 19 treesize of output 11 [2023-11-06 23:10:09,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:09,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:09,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:10:09,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428395663] [2023-11-06 23:10:09,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428395663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:09,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:09,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-06 23:10:09,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729240024] [2023-11-06 23:10:09,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:09,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 23:10:09,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:10:09,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 23:10:09,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-11-06 23:10:09,524 INFO L87 Difference]: Start difference. First operand 258 states and 301 transitions. Second operand has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:10:15,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:15,148 INFO L93 Difference]: Finished difference Result 326 states and 361 transitions. [2023-11-06 23:10:15,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 23:10:15,150 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2023-11-06 23:10:15,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:15,152 INFO L225 Difference]: With dead ends: 326 [2023-11-06 23:10:15,152 INFO L226 Difference]: Without dead ends: 326 [2023-11-06 23:10:15,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 23:10:15,154 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 571 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:15,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 1358 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-06 23:10:15,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-06 23:10:15,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 283. [2023-11-06 23:10:15,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 202 states have (on average 1.504950495049505) internal successors, (304), 260 states have internal predecessors, (304), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (16), 12 states have call predecessors, (16), 11 states have call successors, (16) [2023-11-06 23:10:15,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 331 transitions. [2023-11-06 23:10:15,164 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 331 transitions. Word has length 45 [2023-11-06 23:10:15,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:15,165 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 331 transitions. [2023-11-06 23:10:15,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:10:15,165 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 331 transitions. [2023-11-06 23:10:15,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-06 23:10:15,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:15,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:15,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:15,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:10:15,380 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:10:15,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:15,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2033242025, now seen corresponding path program 1 times [2023-11-06 23:10:15,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:10:15,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125464596] [2023-11-06 23:10:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:15,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:10:15,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:10:15,382 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:10:15,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-06 23:10:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:15,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-06 23:10:15,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:15,732 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 23:10:15,750 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 23:10:16,284 INFO L351 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 [2023-11-06 23:10:16,294 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 23:10:16,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:10:16,390 INFO L351 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 18 treesize of output 13 [2023-11-06 23:10:16,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:10:16,428 INFO L322 Elim1Store]: treesize reduction 38, result has 24.0 percent of original size [2023-11-06 23:10:16,428 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 36 [2023-11-06 23:10:16,559 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-06 23:10:16,578 INFO L322 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-11-06 23:10:16,579 INFO L351 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 19 treesize of output 11 [2023-11-06 23:10:17,118 INFO L322 Elim1Store]: treesize reduction 26, result has 33.3 percent of original size [2023-11-06 23:10:17,119 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 26 [2023-11-06 23:10:17,135 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-11-06 23:10:17,453 INFO L351 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 25 treesize of output 18 [2023-11-06 23:10:17,479 INFO L351 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 [2023-11-06 23:10:17,638 INFO L351 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 [2023-11-06 23:10:17,645 INFO L351 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 25 treesize of output 18 [2023-11-06 23:10:18,463 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-06 23:10:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:18,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:18,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:10:18,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125464596] [2023-11-06 23:10:18,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125464596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:18,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:18,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-06 23:10:18,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147193160] [2023-11-06 23:10:18,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:18,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 23:10:18,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:10:18,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 23:10:18,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2023-11-06 23:10:18,819 INFO L87 Difference]: Start difference. First operand 283 states and 331 transitions. Second operand has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:10:29,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:29,617 INFO L93 Difference]: Finished difference Result 357 states and 397 transitions. [2023-11-06 23:10:29,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 23:10:29,618 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2023-11-06 23:10:29,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:29,621 INFO L225 Difference]: With dead ends: 357 [2023-11-06 23:10:29,621 INFO L226 Difference]: Without dead ends: 357 [2023-11-06 23:10:29,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=185, Invalid=1221, Unknown=0, NotChecked=0, Total=1406 [2023-11-06 23:10:29,623 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 486 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 2296 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 2329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:29,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 1479 Invalid, 2329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2296 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-11-06 23:10:29,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-11-06 23:10:29,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 303. [2023-11-06 23:10:29,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 218 states have (on average 1.5275229357798166) internal successors, (333), 278 states have internal predecessors, (333), 13 states have call successors, (13), 11 states have call predecessors, (13), 13 states have return successors, (18), 13 states have call predecessors, (18), 13 states have call successors, (18) [2023-11-06 23:10:29,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 364 transitions. [2023-11-06 23:10:29,635 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 364 transitions. Word has length 45 [2023-11-06 23:10:29,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:29,635 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 364 transitions. [2023-11-06 23:10:29,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:10:29,636 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 364 transitions. [2023-11-06 23:10:29,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-06 23:10:29,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:29,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:29,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:29,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:10:29,850 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:10:29,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:29,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1894163704, now seen corresponding path program 1 times [2023-11-06 23:10:29,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:10:29,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145057445] [2023-11-06 23:10:29,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:29,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:10:29,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:10:29,852 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:10:29,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-06 23:10:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:30,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 23:10:30,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:30,112 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 23:10:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:30,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:30,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:10:30,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145057445] [2023-11-06 23:10:30,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145057445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:30,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:30,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:10:30,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820320178] [2023-11-06 23:10:30,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:30,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:10:30,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:10:30,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:10:30,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:10:30,298 INFO L87 Difference]: Start difference. First operand 303 states and 364 transitions. Second operand has 7 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:10:31,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:31,360 INFO L93 Difference]: Finished difference Result 322 states and 373 transitions. [2023-11-06 23:10:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:10:31,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2023-11-06 23:10:31,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:31,363 INFO L225 Difference]: With dead ends: 322 [2023-11-06 23:10:31,363 INFO L226 Difference]: Without dead ends: 322 [2023-11-06 23:10:31,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:10:31,364 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 59 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:31,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 729 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-06 23:10:31,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-06 23:10:31,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 303. [2023-11-06 23:10:31,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 218 states have (on average 1.518348623853211) internal successors, (331), 278 states have internal predecessors, (331), 13 states have call successors, (13), 11 states have call predecessors, (13), 13 states have return successors, (18), 13 states have call predecessors, (18), 13 states have call successors, (18) [2023-11-06 23:10:31,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 362 transitions. [2023-11-06 23:10:31,375 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 362 transitions. Word has length 45 [2023-11-06 23:10:31,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:31,376 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 362 transitions. [2023-11-06 23:10:31,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:10:31,376 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 362 transitions. [2023-11-06 23:10:31,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-06 23:10:31,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:31,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:31,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:31,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:10:31,592 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:10:31,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:31,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1894163703, now seen corresponding path program 1 times [2023-11-06 23:10:31,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:10:31,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333887332] [2023-11-06 23:10:31,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:31,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:10:31,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:10:31,594 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:10:31,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-06 23:10:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:31,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 23:10:31,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:31,848 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 23:10:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:31,926 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:31,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:10:31,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333887332] [2023-11-06 23:10:31,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333887332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:31,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:31,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:10:31,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953666272] [2023-11-06 23:10:31,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:31,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:10:31,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:10:31,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:10:31,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:10:31,928 INFO L87 Difference]: Start difference. First operand 303 states and 362 transitions. Second operand has 7 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:10:32,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:10:32,754 INFO L93 Difference]: Finished difference Result 313 states and 363 transitions. [2023-11-06 23:10:32,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:10:32,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2023-11-06 23:10:32,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:10:32,757 INFO L225 Difference]: With dead ends: 313 [2023-11-06 23:10:32,758 INFO L226 Difference]: Without dead ends: 313 [2023-11-06 23:10:32,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:10:32,758 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 66 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:10:32,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 724 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 23:10:32,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-06 23:10:32,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 302. [2023-11-06 23:10:32,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 218 states have (on average 1.5045871559633028) internal successors, (328), 277 states have internal predecessors, (328), 13 states have call successors, (13), 11 states have call predecessors, (13), 13 states have return successors, (18), 13 states have call predecessors, (18), 13 states have call successors, (18) [2023-11-06 23:10:32,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 359 transitions. [2023-11-06 23:10:32,776 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 359 transitions. Word has length 45 [2023-11-06 23:10:32,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:10:32,777 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 359 transitions. [2023-11-06 23:10:32,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 23:10:32,777 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 359 transitions. [2023-11-06 23:10:32,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-06 23:10:32,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:10:32,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:10:32,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-11-06 23:10:32,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:10:32,989 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:10:32,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:10:32,989 INFO L85 PathProgramCache]: Analyzing trace with hash 264531863, now seen corresponding path program 1 times [2023-11-06 23:10:32,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:10:32,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831995059] [2023-11-06 23:10:32,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:10:32,990 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:10:32,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:10:32,991 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:10:32,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-06 23:10:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:10:33,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-06 23:10:33,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:10:33,530 INFO L322 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-11-06 23:10:33,530 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 41 [2023-11-06 23:10:33,909 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 23:10:34,022 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-06 23:10:34,372 INFO L351 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 31 treesize of output 19 [2023-11-06 23:10:34,412 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 23:10:34,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:10:34,686 INFO L322 Elim1Store]: treesize reduction 122, result has 29.9 percent of original size [2023-11-06 23:10:34,686 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 99 [2023-11-06 23:10:35,157 INFO L322 Elim1Store]: treesize reduction 14, result has 71.4 percent of original size [2023-11-06 23:10:35,158 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 79 treesize of output 99 [2023-11-06 23:10:36,192 INFO L322 Elim1Store]: treesize reduction 36, result has 61.3 percent of original size [2023-11-06 23:10:36,193 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 84 treesize of output 124 [2023-11-06 23:10:37,510 INFO L351 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 [2023-11-06 23:10:37,546 INFO L322 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-11-06 23:10:37,547 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 87 [2023-11-06 23:10:40,779 INFO L322 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-11-06 23:10:40,779 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 87 [2023-11-06 23:10:40,808 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 23:10:43,775 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:10:43,776 INFO L351 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 100 treesize of output 59 [2023-11-06 23:10:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:10:44,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:10:44,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:10:44,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831995059] [2023-11-06 23:10:44,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831995059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:10:44,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:10:44,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-06 23:10:44,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865618870] [2023-11-06 23:10:44,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:10:44,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 23:10:44,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:10:44,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 23:10:44,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=679, Unknown=1, NotChecked=0, Total=756 [2023-11-06 23:10:44,405 INFO L87 Difference]: Start difference. First operand 302 states and 359 transitions. Second operand has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 21 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:11:04,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:11:04,057 INFO L93 Difference]: Finished difference Result 360 states and 400 transitions. [2023-11-06 23:11:04,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-06 23:11:04,058 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 21 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2023-11-06 23:11:04,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:11:04,060 INFO L225 Difference]: With dead ends: 360 [2023-11-06 23:11:04,060 INFO L226 Difference]: Without dead ends: 360 [2023-11-06 23:11:04,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=280, Invalid=2371, Unknown=1, NotChecked=0, Total=2652 [2023-11-06 23:11:04,062 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 534 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 2744 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:11:04,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 2055 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2744 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2023-11-06 23:11:04,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-06 23:11:04,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 315. [2023-11-06 23:11:04,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 229 states have (on average 1.519650655021834) internal successors, (348), 288 states have internal predecessors, (348), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2023-11-06 23:11:04,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 381 transitions. [2023-11-06 23:11:04,073 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 381 transitions. Word has length 47 [2023-11-06 23:11:04,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:11:04,074 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 381 transitions. [2023-11-06 23:11:04,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 21 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:11:04,074 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 381 transitions. [2023-11-06 23:11:04,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-06 23:11:04,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:11:04,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:11:04,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-11-06 23:11:04,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:11:04,288 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:11:04,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:04,288 INFO L85 PathProgramCache]: Analyzing trace with hash 264531864, now seen corresponding path program 1 times [2023-11-06 23:11:04,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:11:04,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104839227] [2023-11-06 23:11:04,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:04,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:11:04,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:11:04,290 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:11:04,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-06 23:11:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:04,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 81 conjunts are in the unsatisfiable core [2023-11-06 23:11:04,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:11:04,704 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 23:11:04,836 INFO L322 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-06 23:11:04,836 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-06 23:11:05,166 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 23:11:05,175 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 23:11:05,305 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-06 23:11:05,313 INFO L351 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 11 [2023-11-06 23:11:05,628 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-11-06 23:11:05,644 INFO L351 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 31 treesize of output 19 [2023-11-06 23:11:05,913 INFO L322 Elim1Store]: treesize reduction 98, result has 30.0 percent of original size [2023-11-06 23:11:05,913 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 60 [2023-11-06 23:11:05,944 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-06 23:11:05,945 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2023-11-06 23:11:06,197 INFO L322 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-11-06 23:11:06,197 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2023-11-06 23:11:06,228 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-06 23:11:06,229 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 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 [2023-11-06 23:11:06,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:11:06,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:11:06,905 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-06 23:11:06,905 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2023-11-06 23:11:06,968 INFO L322 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2023-11-06 23:11:06,968 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2023-11-06 23:11:07,838 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-11-06 23:11:07,880 INFO L322 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-11-06 23:11:07,881 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 63 [2023-11-06 23:11:08,542 INFO L322 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-11-06 23:11:08,543 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 63 [2023-11-06 23:11:08,590 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-11-06 23:11:12,371 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:11:12,372 INFO L351 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 79 treesize of output 38 [2023-11-06 23:11:12,380 INFO L351 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 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 23:11:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:11:13,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:11:13,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:11:13,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104839227] [2023-11-06 23:11:13,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104839227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:13,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:11:13,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-06 23:11:13,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470691825] [2023-11-06 23:11:13,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:13,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 23:11:13,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:11:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 23:11:13,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2023-11-06 23:11:13,086 INFO L87 Difference]: Start difference. First operand 315 states and 381 transitions. Second operand has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:11:33,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:11:33,763 INFO L93 Difference]: Finished difference Result 344 states and 378 transitions. [2023-11-06 23:11:33,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-06 23:11:33,764 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2023-11-06 23:11:33,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:11:33,765 INFO L225 Difference]: With dead ends: 344 [2023-11-06 23:11:33,766 INFO L226 Difference]: Without dead ends: 344 [2023-11-06 23:11:33,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=297, Invalid=2355, Unknown=0, NotChecked=0, Total=2652 [2023-11-06 23:11:33,767 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 441 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 2433 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 2490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:11:33,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1435 Invalid, 2490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2433 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2023-11-06 23:11:33,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-11-06 23:11:33,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 293. [2023-11-06 23:11:33,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 211 states have (on average 1.4834123222748816) internal successors, (313), 268 states have internal predecessors, (313), 12 states have call successors, (12), 11 states have call predecessors, (12), 12 states have return successors, (16), 13 states have call predecessors, (16), 12 states have call successors, (16) [2023-11-06 23:11:33,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 341 transitions. [2023-11-06 23:11:33,777 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 341 transitions. Word has length 47 [2023-11-06 23:11:33,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:11:33,777 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 341 transitions. [2023-11-06 23:11:33,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:11:33,778 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 341 transitions. [2023-11-06 23:11:33,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-06 23:11:33,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:11:33,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:11:33,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-11-06 23:11:33,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:11:33,992 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:11:33,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:11:33,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1750671405, now seen corresponding path program 1 times [2023-11-06 23:11:33,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:11:33,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596800327] [2023-11-06 23:11:33,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:11:33,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:11:33,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:11:33,996 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:11:34,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-06 23:11:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:11:34,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-06 23:11:34,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:11:34,618 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 23:11:34,619 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 16 [2023-11-06 23:11:34,842 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 23:11:34,842 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 23:11:35,081 INFO L322 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2023-11-06 23:11:35,082 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2023-11-06 23:11:35,398 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 23:11:35,680 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 11 [2023-11-06 23:11:35,957 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 23:11:36,059 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 23:11:36,126 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 23:11:36,248 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 23:11:36,831 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 23:11:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:11:37,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:11:37,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:11:37,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596800327] [2023-11-06 23:11:37,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596800327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:11:37,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:11:37,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-06 23:11:37,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698441070] [2023-11-06 23:11:37,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:11:37,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 23:11:37,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:11:37,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 23:11:37,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2023-11-06 23:11:37,210 INFO L87 Difference]: Start difference. First operand 293 states and 341 transitions. Second operand has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:11:40,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:11:44,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:11:46,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:11:51,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:11:57,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:12:00,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:12:02,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:12:05,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 23:12:05,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:12:05,575 INFO L93 Difference]: Finished difference Result 395 states and 445 transitions. [2023-11-06 23:12:05,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 23:12:05,576 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48 [2023-11-06 23:12:05,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:12:05,578 INFO L225 Difference]: With dead ends: 395 [2023-11-06 23:12:05,578 INFO L226 Difference]: Without dead ends: 395 [2023-11-06 23:12:05,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=248, Invalid=1158, Unknown=0, NotChecked=0, Total=1406 [2023-11-06 23:12:05,579 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 1182 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 104 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:12:05,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 1083 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1898 Invalid, 8 Unknown, 0 Unchecked, 24.9s Time] [2023-11-06 23:12:05,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2023-11-06 23:12:05,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 319. [2023-11-06 23:12:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 238 states have (on average 1.4789915966386555) internal successors, (352), 293 states have internal predecessors, (352), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (17), 14 states have call predecessors, (17), 13 states have call successors, (17) [2023-11-06 23:12:05,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 382 transitions. [2023-11-06 23:12:05,591 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 382 transitions. Word has length 48 [2023-11-06 23:12:05,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:12:05,592 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 382 transitions. [2023-11-06 23:12:05,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:12:05,592 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 382 transitions. [2023-11-06 23:12:05,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-06 23:12:05,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:12:05,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:12:05,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-11-06 23:12:05,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:12:05,809 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:12:05,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:05,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1750671406, now seen corresponding path program 1 times [2023-11-06 23:12:05,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:12:05,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948949852] [2023-11-06 23:12:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:05,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:12:05,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:12:05,811 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:12:05,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-06 23:12:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:06,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-06 23:12:06,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:12:06,338 INFO L351 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 8 treesize of output 1 [2023-11-06 23:12:06,366 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 23:12:06,366 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 23:12:06,569 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 23:12:06,569 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 23:12:06,601 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 23:12:06,601 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-06 23:12:06,675 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-06 23:12:06,684 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 23:12:06,685 INFO L351 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 15 treesize of output 11 [2023-11-06 23:12:06,937 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-06 23:12:06,937 INFO L351 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 1 case distinctions, treesize of input 16 treesize of output 22 [2023-11-06 23:12:06,979 INFO L322 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-06 23:12:06,980 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-06 23:12:07,284 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 23:12:07,293 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 23:12:07,611 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 11 [2023-11-06 23:12:07,629 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 11 [2023-11-06 23:12:07,932 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2023-11-06 23:12:07,951 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2023-11-06 23:12:08,059 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2023-11-06 23:12:08,069 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2023-11-06 23:12:08,163 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2023-11-06 23:12:08,179 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2023-11-06 23:12:08,260 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2023-11-06 23:12:08,270 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2023-11-06 23:12:08,748 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 23:12:08,755 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 23:12:09,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:12:09,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:12:09,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:12:09,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948949852] [2023-11-06 23:12:09,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948949852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:09,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:12:09,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-06 23:12:09,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395981168] [2023-11-06 23:12:09,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:09,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 23:12:09,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:12:09,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 23:12:09,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2023-11-06 23:12:09,082 INFO L87 Difference]: Start difference. First operand 319 states and 382 transitions. Second operand has 22 states, 20 states have (on average 2.1) internal successors, (42), 18 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:12:17,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:12:17,597 INFO L93 Difference]: Finished difference Result 397 states and 458 transitions. [2023-11-06 23:12:17,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 23:12:17,597 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.1) internal successors, (42), 18 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48 [2023-11-06 23:12:17,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:12:17,600 INFO L225 Difference]: With dead ends: 397 [2023-11-06 23:12:17,600 INFO L226 Difference]: Without dead ends: 397 [2023-11-06 23:12:17,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=236, Invalid=1404, Unknown=0, NotChecked=0, Total=1640 [2023-11-06 23:12:17,601 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 727 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:12:17,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1211 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2014 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-06 23:12:17,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-11-06 23:12:17,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 319. [2023-11-06 23:12:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 238 states have (on average 1.4705882352941178) internal successors, (350), 293 states have internal predecessors, (350), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (17), 14 states have call predecessors, (17), 13 states have call successors, (17) [2023-11-06 23:12:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 380 transitions. [2023-11-06 23:12:17,613 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 380 transitions. Word has length 48 [2023-11-06 23:12:17,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:12:17,613 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 380 transitions. [2023-11-06 23:12:17,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.1) internal successors, (42), 18 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 23:12:17,614 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 380 transitions. [2023-11-06 23:12:17,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-06 23:12:17,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:12:17,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:12:17,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-11-06 23:12:17,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:12:17,830 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 76 more)] === [2023-11-06 23:12:17,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:12:17,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1231955410, now seen corresponding path program 1 times [2023-11-06 23:12:17,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:12:17,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140084212] [2023-11-06 23:12:17,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:12:17,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 23:12:17,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:12:17,833 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 23:12:17,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3c14ccc-e784-4a21-bfb8-20670fa0367d/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-11-06 23:12:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:12:18,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-06 23:12:18,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:12:18,725 INFO L322 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-11-06 23:12:18,726 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-11-06 23:12:19,241 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 23:12:19,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:12:19,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:12:19,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:12:19,358 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 51 [2023-11-06 23:12:19,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:12:19,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:12:19,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:12:19,499 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-11-06 23:12:19,928 INFO L322 Elim1Store]: treesize reduction 142, result has 27.2 percent of original size [2023-11-06 23:12:19,929 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 46 treesize of output 76 [2023-11-06 23:12:20,489 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 23:12:20,525 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 41 [2023-11-06 23:12:21,057 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 23:12:21,057 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 44 [2023-11-06 23:12:21,129 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2023-11-06 23:12:21,608 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 23:12:21,650 INFO L322 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-11-06 23:12:21,650 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 54 [2023-11-06 23:12:21,872 INFO L322 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-11-06 23:12:21,872 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 54 [2023-11-06 23:12:21,937 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2023-11-06 23:12:22,084 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 23:12:22,136 INFO L322 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-11-06 23:12:22,136 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 54 [2023-11-06 23:12:22,381 INFO L322 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-11-06 23:12:22,382 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 54 [2023-11-06 23:12:22,408 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2023-11-06 23:12:23,544 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-06 23:12:24,129 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-06 23:12:24,130 INFO L351 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 65 treesize of output 37 [2023-11-06 23:12:24,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:12:24,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:12:24,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:12:24,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140084212] [2023-11-06 23:12:24,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140084212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:12:24,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:12:24,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-11-06 23:12:24,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780624019] [2023-11-06 23:12:24,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:12:24,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 23:12:24,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:12:24,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 23:12:24,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2023-11-06 23:12:24,579 INFO L87 Difference]: Start difference. First operand 319 states and 380 transitions. Second operand has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)