./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad1cff32d745d4f106cd2272d34984c4724156cea3537acaf98384a0b708b01e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:57:56,233 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:57:56,358 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 20:57:56,365 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:57:56,366 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:57:56,406 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:57:56,406 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:57:56,407 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:57:56,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:57:56,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:57:56,415 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:57:56,416 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:57:56,416 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:57:56,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:57:56,419 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:57:56,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:57:56,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:57:56,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:57:56,421 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 20:57:56,421 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 20:57:56,421 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 20:57:56,422 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:57:56,423 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 20:57:56,423 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 20:57:56,424 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:57:56,424 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:57:56,425 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:57:56,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:57:56,426 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 20:57:56,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:57:56,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:57:56,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:57:56,429 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:57:56,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 20:57:56,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 20:57:56,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:57:56,430 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:57:56,430 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:57:56,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:57:56,431 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_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad1cff32d745d4f106cd2272d34984c4724156cea3537acaf98384a0b708b01e [2023-11-21 20:57:56,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:57:56,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:57:56,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:57:56,759 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:57:56,759 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:57:56,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-2.i [2023-11-21 20:57:59,828 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:58:00,221 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:58:00,223 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-2.i [2023-11-21 20:58:00,248 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/data/29c42f93b/da59b5861d884559951acf7a15f98da7/FLAG6e80eb490 [2023-11-21 20:58:00,264 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/data/29c42f93b/da59b5861d884559951acf7a15f98da7 [2023-11-21 20:58:00,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:58:00,273 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:58:00,276 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:58:00,276 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:58:00,282 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:58:00,283 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:58:00" (1/1) ... [2023-11-21 20:58:00,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0a4302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:00, skipping insertion in model container [2023-11-21 20:58:00,284 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:58:00" (1/1) ... [2023-11-21 20:58:00,373 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:58:00,685 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 20:58:01,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:58:01,092 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) [2023-11-21 20:58:01,096 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@33b1939a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:01, skipping insertion in model container [2023-11-21 20:58:01,096 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:58:01,096 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 20:58:01,098 INFO L158 Benchmark]: Toolchain (without parser) took 824.70ms. Allocated memory is still 134.2MB. Free memory was 93.5MB in the beginning and 72.2MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 20:58:01,099 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 100.7MB. Free memory is still 46.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 20:58:01,100 INFO L158 Benchmark]: CACSL2BoogieTranslator took 820.03ms. Allocated memory is still 134.2MB. Free memory was 93.5MB in the beginning and 72.2MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 20:58:01,101 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 100.7MB. Free memory is still 46.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 820.03ms. Allocated memory is still 134.2MB. Free memory was 93.5MB in the beginning and 72.2MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 740]: 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_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad1cff32d745d4f106cd2272d34984c4724156cea3537acaf98384a0b708b01e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:58:03,632 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:58:03,764 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 20:58:03,773 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:58:03,774 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:58:03,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:58:03,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:58:03,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:58:03,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:58:03,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:58:03,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:58:03,836 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:58:03,836 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:58:03,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:58:03,839 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:58:03,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:58:03,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:58:03,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:58:03,840 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 20:58:03,841 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 20:58:03,841 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 20:58:03,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:58:03,842 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 20:58:03,843 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 20:58:03,843 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 20:58:03,844 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 20:58:03,844 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:58:03,845 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:58:03,846 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:58:03,846 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:58:03,847 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 20:58:03,848 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:58:03,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:58:03,849 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:58:03,849 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:58:03,849 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 20:58:03,850 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 20:58:03,850 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:58:03,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:58:03,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:58:03,851 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:58:03,852 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 20:58:03,852 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_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad1cff32d745d4f106cd2272d34984c4724156cea3537acaf98384a0b708b01e [2023-11-21 20:58:04,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:58:04,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:58:04,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:58:04,289 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:58:04,290 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:58:04,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-2.i [2023-11-21 20:58:07,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:58:07,861 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:58:07,862 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test4-2.i [2023-11-21 20:58:07,893 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/data/5525533e5/893ed7a2de434b49a34ebaf5e3ef96b8/FLAG77d0eecb1 [2023-11-21 20:58:07,915 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/data/5525533e5/893ed7a2de434b49a34ebaf5e3ef96b8 [2023-11-21 20:58:07,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:58:07,923 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:58:07,928 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:58:07,929 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:58:07,934 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:58:07,934 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:58:07" (1/1) ... [2023-11-21 20:58:07,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e0b14c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:07, skipping insertion in model container [2023-11-21 20:58:07,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:58:07" (1/1) ... [2023-11-21 20:58:08,026 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:58:08,379 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 20:58:08,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:58:08,781 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 20:58:08,803 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:58:08,822 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 20:58:08,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:58:08,968 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 20:58:08,991 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 20:58:09,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:58:09,152 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:58:09,160 INFO L206 MainTranslator]: Completed translation [2023-11-21 20:58:09,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:09 WrapperNode [2023-11-21 20:58:09,160 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:58:09,161 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 20:58:09,162 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 20:58:09,162 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 20:58:09,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:09" (1/1) ... [2023-11-21 20:58:09,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:09" (1/1) ... [2023-11-21 20:58:09,297 INFO L138 Inliner]: procedures = 181, calls = 392, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1302 [2023-11-21 20:58:09,298 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 20:58:09,299 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 20:58:09,299 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 20:58:09,299 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 20:58:09,308 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:09" (1/1) ... [2023-11-21 20:58:09,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:09" (1/1) ... [2023-11-21 20:58:09,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:09" (1/1) ... [2023-11-21 20:58:09,322 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:09" (1/1) ... [2023-11-21 20:58:09,386 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:09" (1/1) ... [2023-11-21 20:58:09,397 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:09" (1/1) ... [2023-11-21 20:58:09,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:09" (1/1) ... [2023-11-21 20:58:09,438 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:09" (1/1) ... [2023-11-21 20:58:09,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 20:58:09,463 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 20:58:09,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 20:58:09,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 20:58:09,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:09" (1/1) ... [2023-11-21 20:58:09,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:58:09,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:58:09,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 20:58:09,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 20:58:09,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-21 20:58:09,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 20:58:09,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 20:58:09,554 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 20:58:09,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 20:58:09,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 20:58:09,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 20:58:09,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 20:58:09,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 20:58:09,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 20:58:09,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 20:58:09,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 20:58:09,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 20:58:09,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 20:58:09,838 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 20:58:09,841 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 20:58:09,845 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 20:58:16,410 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 20:58:16,757 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 20:58:16,757 INFO L308 CfgBuilder]: Removed 69 assume(true) statements. [2023-11-21 20:58:16,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:58:16 BoogieIcfgContainer [2023-11-21 20:58:16,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 20:58:16,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 20:58:16,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 20:58:16,786 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 20:58:16,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:58:07" (1/3) ... [2023-11-21 20:58:16,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b9ba6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:58:16, skipping insertion in model container [2023-11-21 20:58:16,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:09" (2/3) ... [2023-11-21 20:58:16,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b9ba6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:58:16, skipping insertion in model container [2023-11-21 20:58:16,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:58:16" (3/3) ... [2023-11-21 20:58:16,789 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test4-2.i [2023-11-21 20:58:16,810 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 20:58:16,810 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 753 error locations. [2023-11-21 20:58:16,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:58:16,883 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;@687eb645, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:58:16,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 753 error locations. [2023-11-21 20:58:16,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 1312 states, 557 states have (on average 2.578096947935368) internal successors, (1436), 1304 states have internal predecessors, (1436), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 20:58:16,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-21 20:58:16,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:16,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-21 20:58:16,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr752ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-21 20:58:16,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:16,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2106204, now seen corresponding path program 1 times [2023-11-21 20:58:16,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:58:16,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105976048] [2023-11-21 20:58:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:16,920 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 [2023-11-21 20:58:16,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:58:16,923 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 20:58:17,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:17,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 20:58:17,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:17,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:17,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:17,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:58:17,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105976048] [2023-11-21 20:58:17,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105976048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:17,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:17,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 20:58:17,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599745558] [2023-11-21 20:58:17,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:17,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:58:17,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:58:17,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:58:17,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:17,256 INFO L87 Difference]: Start difference. First operand has 1312 states, 557 states have (on average 2.578096947935368) internal successors, (1436), 1304 states have internal predecessors, (1436), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:20,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:20,895 INFO L93 Difference]: Finished difference Result 1480 states and 1559 transitions. [2023-11-21 20:58:20,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:58:20,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-21 20:58:20,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:20,923 INFO L225 Difference]: With dead ends: 1480 [2023-11-21 20:58:20,923 INFO L226 Difference]: Without dead ends: 1478 [2023-11-21 20:58:20,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:20,929 INFO L413 NwaCegarLoop]: 1133 mSDtfsCounter, 198 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:20,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1741 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-21 20:58:20,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2023-11-21 20:58:21,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1305. [2023-11-21 20:58:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1305 states, 561 states have (on average 2.443850267379679) internal successors, (1371), 1297 states have internal predecessors, (1371), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 20:58:21,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1383 transitions. [2023-11-21 20:58:21,048 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1383 transitions. Word has length 3 [2023-11-21 20:58:21,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:21,048 INFO L495 AbstractCegarLoop]: Abstraction has 1305 states and 1383 transitions. [2023-11-21 20:58:21,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:21,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1383 transitions. [2023-11-21 20:58:21,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 20:58:21,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:21,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 20:58:21,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:21,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:21,253 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-21 20:58:21,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:21,255 INFO L85 PathProgramCache]: Analyzing trace with hash 65299269, now seen corresponding path program 1 times [2023-11-21 20:58:21,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:58:21,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992201819] [2023-11-21 20:58:21,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:21,258 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 [2023-11-21 20:58:21,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:58:21,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 20:58:21,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:21,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 20:58:21,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:21,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 20:58:21,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:21,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:21,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:58:21,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992201819] [2023-11-21 20:58:21,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992201819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:21,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:21,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 20:58:21,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753188497] [2023-11-21 20:58:21,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:21,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:58:21,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:58:21,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:58:21,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:21,513 INFO L87 Difference]: Start difference. First operand 1305 states and 1383 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:24,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:24,748 INFO L93 Difference]: Finished difference Result 1333 states and 1422 transitions. [2023-11-21 20:58:24,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:58:24,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 20:58:24,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:24,758 INFO L225 Difference]: With dead ends: 1333 [2023-11-21 20:58:24,758 INFO L226 Difference]: Without dead ends: 1333 [2023-11-21 20:58:24,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:24,760 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 1024 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:24,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 774 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-21 20:58:24,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2023-11-21 20:58:24,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1277. [2023-11-21 20:58:24,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 626 states have (on average 2.236421725239617) internal successors, (1400), 1269 states have internal predecessors, (1400), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 20:58:24,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1412 transitions. [2023-11-21 20:58:24,813 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1412 transitions. Word has length 4 [2023-11-21 20:58:24,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:24,813 INFO L495 AbstractCegarLoop]: Abstraction has 1277 states and 1412 transitions. [2023-11-21 20:58:24,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:24,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1412 transitions. [2023-11-21 20:58:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 20:58:24,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:24,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 20:58:24,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:25,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:25,017 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-21 20:58:25,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:25,018 INFO L85 PathProgramCache]: Analyzing trace with hash 65299270, now seen corresponding path program 1 times [2023-11-21 20:58:25,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:58:25,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084984171] [2023-11-21 20:58:25,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:25,019 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 [2023-11-21 20:58:25,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:58:25,021 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 20:58:25,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:25,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 20:58:25,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:25,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 20:58:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:25,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:25,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:58:25,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084984171] [2023-11-21 20:58:25,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084984171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:25,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:25,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 20:58:25,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848793584] [2023-11-21 20:58:25,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:25,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:58:25,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:58:25,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:58:25,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:25,197 INFO L87 Difference]: Start difference. First operand 1277 states and 1412 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:29,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:29,746 INFO L93 Difference]: Finished difference Result 1547 states and 1702 transitions. [2023-11-21 20:58:29,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:58:29,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 20:58:29,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:29,757 INFO L225 Difference]: With dead ends: 1547 [2023-11-21 20:58:29,757 INFO L226 Difference]: Without dead ends: 1547 [2023-11-21 20:58:29,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:29,759 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 453 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:29,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1362 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-21 20:58:29,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2023-11-21 20:58:29,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1399. [2023-11-21 20:58:29,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 758 states have (on average 2.2058047493403694) internal successors, (1672), 1391 states have internal predecessors, (1672), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 20:58:29,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1684 transitions. [2023-11-21 20:58:29,801 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1684 transitions. Word has length 4 [2023-11-21 20:58:29,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:29,801 INFO L495 AbstractCegarLoop]: Abstraction has 1399 states and 1684 transitions. [2023-11-21 20:58:29,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:29,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1684 transitions. [2023-11-21 20:58:29,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 20:58:29,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:29,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 20:58:29,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:30,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:30,018 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-21 20:58:30,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:30,019 INFO L85 PathProgramCache]: Analyzing trace with hash 2024343559, now seen corresponding path program 1 times [2023-11-21 20:58:30,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:58:30,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902558240] [2023-11-21 20:58:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:30,020 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 [2023-11-21 20:58:30,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:58:30,021 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 20:58:30,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:30,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 20:58:30,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:30,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:30,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:58:30,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902558240] [2023-11-21 20:58:30,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902558240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:30,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:30,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:58:30,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979077686] [2023-11-21 20:58:30,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:30,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:58:30,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:58:30,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:58:30,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:58:30,251 INFO L87 Difference]: Start difference. First operand 1399 states and 1684 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:33,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:33,354 INFO L93 Difference]: Finished difference Result 2330 states and 2807 transitions. [2023-11-21 20:58:33,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 20:58:33,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-21 20:58:33,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:33,366 INFO L225 Difference]: With dead ends: 2330 [2023-11-21 20:58:33,367 INFO L226 Difference]: Without dead ends: 2330 [2023-11-21 20:58:33,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:58:33,368 INFO L413 NwaCegarLoop]: 1103 mSDtfsCounter, 890 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:33,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 3038 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-21 20:58:33,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2023-11-21 20:58:33,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 1839. [2023-11-21 20:58:33,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1198 states have (on average 2.171118530884808) internal successors, (2601), 1828 states have internal predecessors, (2601), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-21 20:58:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2619 transitions. [2023-11-21 20:58:33,424 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2619 transitions. Word has length 5 [2023-11-21 20:58:33,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:33,424 INFO L495 AbstractCegarLoop]: Abstraction has 1839 states and 2619 transitions. [2023-11-21 20:58:33,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:33,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2619 transitions. [2023-11-21 20:58:33,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 20:58:33,425 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:33,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 20:58:33,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:33,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:33,627 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr647REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-21 20:58:33,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:33,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1669369729, now seen corresponding path program 1 times [2023-11-21 20:58:33,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:58:33,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358211640] [2023-11-21 20:58:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:33,628 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 [2023-11-21 20:58:33,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:58:33,629 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 20:58:33,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:33,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 20:58:33,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:33,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:33,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:58:33,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358211640] [2023-11-21 20:58:33,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358211640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:33,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:33,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 20:58:33,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388132413] [2023-11-21 20:58:33,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:33,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:58:33,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:58:33,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:58:33,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:33,801 INFO L87 Difference]: Start difference. First operand 1839 states and 2619 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:35,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:35,545 INFO L93 Difference]: Finished difference Result 1956 states and 2580 transitions. [2023-11-21 20:58:35,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:58:35,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 20:58:35,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:35,566 INFO L225 Difference]: With dead ends: 1956 [2023-11-21 20:58:35,566 INFO L226 Difference]: Without dead ends: 1956 [2023-11-21 20:58:35,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:35,568 INFO L413 NwaCegarLoop]: 1154 mSDtfsCounter, 367 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:35,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 2143 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-21 20:58:35,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2023-11-21 20:58:35,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1731. [2023-11-21 20:58:35,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1090 states have (on average 2.1779816513761467) internal successors, (2374), 1720 states have internal predecessors, (2374), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-21 20:58:35,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2392 transitions. [2023-11-21 20:58:35,631 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2392 transitions. Word has length 6 [2023-11-21 20:58:35,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:35,631 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2392 transitions. [2023-11-21 20:58:35,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:35,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2392 transitions. [2023-11-21 20:58:35,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 20:58:35,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:35,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:35,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:35,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:35,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr649REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-21 20:58:35,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:35,836 INFO L85 PathProgramCache]: Analyzing trace with hash -759710266, now seen corresponding path program 1 times [2023-11-21 20:58:35,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:58:35,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827842304] [2023-11-21 20:58:35,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:35,836 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 [2023-11-21 20:58:35,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:58:35,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 20:58:35,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:35,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 20:58:35,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:36,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:36,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:58:36,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827842304] [2023-11-21 20:58:36,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827842304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:36,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:36,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:58:36,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936776385] [2023-11-21 20:58:36,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:36,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:58:36,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:58:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:58:36,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:58:36,050 INFO L87 Difference]: Start difference. First operand 1731 states and 2392 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:40,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:40,593 INFO L93 Difference]: Finished difference Result 2659 states and 3328 transitions. [2023-11-21 20:58:40,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 20:58:40,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-21 20:58:40,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:40,610 INFO L225 Difference]: With dead ends: 2659 [2023-11-21 20:58:40,610 INFO L226 Difference]: Without dead ends: 2655 [2023-11-21 20:58:40,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:58:40,611 INFO L413 NwaCegarLoop]: 1207 mSDtfsCounter, 998 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 3173 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:40,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 3173 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-21 20:58:40,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2023-11-21 20:58:40,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 1729. [2023-11-21 20:58:40,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1088 states have (on average 2.1792279411764706) internal successors, (2371), 1718 states have internal predecessors, (2371), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-21 20:58:40,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2389 transitions. [2023-11-21 20:58:40,667 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2389 transitions. Word has length 9 [2023-11-21 20:58:40,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:40,668 INFO L495 AbstractCegarLoop]: Abstraction has 1729 states and 2389 transitions. [2023-11-21 20:58:40,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:40,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2389 transitions. [2023-11-21 20:58:40,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 20:58:40,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:40,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:40,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:40,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:40,872 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-21 20:58:40,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:40,872 INFO L85 PathProgramCache]: Analyzing trace with hash -616363697, now seen corresponding path program 1 times [2023-11-21 20:58:40,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:58:40,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001959173] [2023-11-21 20:58:40,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:40,877 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 [2023-11-21 20:58:40,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:58:40,878 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 20:58:40,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:41,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 20:58:41,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:41,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:41,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:58:41,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001959173] [2023-11-21 20:58:41,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001959173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:41,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:41,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:58:41,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596668874] [2023-11-21 20:58:41,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:41,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:58:41,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:58:41,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:58:41,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:41,085 INFO L87 Difference]: Start difference. First operand 1729 states and 2389 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:42,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:42,533 INFO L93 Difference]: Finished difference Result 1675 states and 2309 transitions. [2023-11-21 20:58:42,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:58:42,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-21 20:58:42,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:42,544 INFO L225 Difference]: With dead ends: 1675 [2023-11-21 20:58:42,544 INFO L226 Difference]: Without dead ends: 1675 [2023-11-21 20:58:42,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:42,545 INFO L413 NwaCegarLoop]: 1057 mSDtfsCounter, 69 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:42,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 2065 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-21 20:58:42,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2023-11-21 20:58:42,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1675. [2023-11-21 20:58:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1058 states have (on average 2.165406427221172) internal successors, (2291), 1664 states have internal predecessors, (2291), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-21 20:58:42,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2309 transitions. [2023-11-21 20:58:42,588 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2309 transitions. Word has length 10 [2023-11-21 20:58:42,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:42,588 INFO L495 AbstractCegarLoop]: Abstraction has 1675 states and 2309 transitions. [2023-11-21 20:58:42,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:42,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2309 transitions. [2023-11-21 20:58:42,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 20:58:42,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:42,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:42,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:42,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:42,797 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-21 20:58:42,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:42,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1925233601, now seen corresponding path program 1 times [2023-11-21 20:58:42,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:58:42,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229874573] [2023-11-21 20:58:42,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:42,798 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 [2023-11-21 20:58:42,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:58:42,800 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 20:58:42,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:42,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 20:58:43,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:43,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:43,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:58:43,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229874573] [2023-11-21 20:58:43,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229874573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:43,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:43,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:58:43,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725619661] [2023-11-21 20:58:43,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:43,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:58:43,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:58:43,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:58:43,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:58:43,023 INFO L87 Difference]: Start difference. First operand 1675 states and 2309 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:44,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:44,850 INFO L93 Difference]: Finished difference Result 1661 states and 2267 transitions. [2023-11-21 20:58:44,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 20:58:44,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-21 20:58:44,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:44,863 INFO L225 Difference]: With dead ends: 1661 [2023-11-21 20:58:44,863 INFO L226 Difference]: Without dead ends: 1661 [2023-11-21 20:58:44,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:58:44,865 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 58 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:44,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3054 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-21 20:58:44,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2023-11-21 20:58:44,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1659. [2023-11-21 20:58:44,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1056 states have (on average 2.127840909090909) internal successors, (2247), 1648 states have internal predecessors, (2247), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-21 20:58:44,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2265 transitions. [2023-11-21 20:58:44,926 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2265 transitions. Word has length 11 [2023-11-21 20:58:44,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:44,926 INFO L495 AbstractCegarLoop]: Abstraction has 1659 states and 2265 transitions. [2023-11-21 20:58:44,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:44,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2265 transitions. [2023-11-21 20:58:44,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-21 20:58:44,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:44,928 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] [2023-11-21 20:58:44,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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)] Ended with exit code 0 [2023-11-21 20:58:45,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:45,131 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-21 20:58:45,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1473609747, now seen corresponding path program 1 times [2023-11-21 20:58:45,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:58:45,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328052499] [2023-11-21 20:58:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:45,132 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 [2023-11-21 20:58:45,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:58:45,133 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 20:58:45,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:45,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 20:58:45,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:45,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 20:58:45,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:45,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:45,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:58:45,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328052499] [2023-11-21 20:58:45,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328052499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:45,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:45,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:58:45,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901127943] [2023-11-21 20:58:45,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:45,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:58:45,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:58:45,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:58:45,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:58:45,434 INFO L87 Difference]: Start difference. First operand 1659 states and 2265 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:49,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:49,482 INFO L93 Difference]: Finished difference Result 1711 states and 2267 transitions. [2023-11-21 20:58:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 20:58:49,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-21 20:58:49,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:58:49,492 INFO L225 Difference]: With dead ends: 1711 [2023-11-21 20:58:49,493 INFO L226 Difference]: Without dead ends: 1711 [2023-11-21 20:58:49,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:58:49,494 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 959 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-21 20:58:49,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 1176 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-21 20:58:49,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2023-11-21 20:58:49,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1655. [2023-11-21 20:58:49,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1056 states have (on average 2.1202651515151514) internal successors, (2239), 1644 states have internal predecessors, (2239), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-21 20:58:49,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2257 transitions. [2023-11-21 20:58:49,531 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2257 transitions. Word has length 25 [2023-11-21 20:58:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:58:49,532 INFO L495 AbstractCegarLoop]: Abstraction has 1655 states and 2257 transitions. [2023-11-21 20:58:49,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2257 transitions. [2023-11-21 20:58:49,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-21 20:58:49,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:58:49,533 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] [2023-11-21 20:58:49,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:49,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:49,736 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-21 20:58:49,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:49,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1473609746, now seen corresponding path program 1 times [2023-11-21 20:58:49,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:58:49,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341697497] [2023-11-21 20:58:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:49,738 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 [2023-11-21 20:58:49,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:58:49,739 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 20:58:49,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a166a3d4-3c29-4b2e-bfde-a0ff018a6372/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 20:58:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:49,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 20:58:49,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:58:49,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 20:58:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:50,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:58:50,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:58:50,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341697497] [2023-11-21 20:58:50,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341697497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:50,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:50,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:58:50,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59422757] [2023-11-21 20:58:50,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:50,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:58:50,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:58:50,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:58:50,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:58:50,155 INFO L87 Difference]: Start difference. First operand 1655 states and 2257 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)