./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 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_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ --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 e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:36:59,283 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:36:59,378 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-23 21:36:59,383 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:36:59,384 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:36:59,427 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:36:59,428 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:36:59,429 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:36:59,430 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:36:59,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:36:59,439 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:36:59,439 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:36:59,439 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:36:59,442 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:36:59,442 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:36:59,442 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:36:59,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:36:59,444 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:36:59,444 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:36:59,445 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:36:59,445 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:36:59,446 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:36:59,446 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:36:59,448 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:36:59,449 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:36:59,449 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:36:59,450 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:36:59,450 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:36:59,450 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:36:59,451 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:36:59,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:36:59,452 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:36:59,452 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:36:59,452 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:36:59,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:36:59,453 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:36:59,453 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:36:59,453 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:36:59,453 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:36:59,454 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_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af [2023-11-23 21:36:59,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:36:59,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:36:59,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:36:59,844 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:36:59,845 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:36:59,846 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2023-11-23 21:37:02,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:37:03,269 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:37:03,270 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2023-11-23 21:37:03,302 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/data/8ef4e7823/85a963f50ad447ff88072645491160d6/FLAG56d4ca8df [2023-11-23 21:37:03,317 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/data/8ef4e7823/85a963f50ad447ff88072645491160d6 [2023-11-23 21:37:03,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:37:03,321 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:37:03,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:37:03,323 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:37:03,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:37:03,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:37:03" (1/1) ... [2023-11-23 21:37:03,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd67970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:03, skipping insertion in model container [2023-11-23 21:37:03,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:37:03" (1/1) ... [2023-11-23 21:37:03,388 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:37:03,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:37:03,895 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) [2023-11-23 21:37:03,895 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31cd56c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:03, skipping insertion in model container [2023-11-23 21:37:03,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:37:03,896 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 21:37:03,898 INFO L158 Benchmark]: Toolchain (without parser) took 575.94ms. Allocated memory is still 146.8MB. Free memory was 111.0MB in the beginning and 96.5MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:37:03,899 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:37:03,900 INFO L158 Benchmark]: CACSL2BoogieTranslator took 573.49ms. Allocated memory is still 146.8MB. Free memory was 111.0MB in the beginning and 96.9MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:37:03,901 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 573.49ms. Allocated memory is still 146.8MB. Free memory was 111.0MB in the beginning and 96.9MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ --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 e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:37:06,570 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:37:06,717 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-23 21:37:06,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:37:06,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:37:06,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:37:06,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:37:06,772 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:37:06,774 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:37:06,774 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:37:06,775 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:37:06,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:37:06,776 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:37:06,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:37:06,778 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:37:06,779 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:37:06,779 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:37:06,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:37:06,780 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:37:06,781 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:37:06,781 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:37:06,782 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:37:06,782 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:37:06,783 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:37:06,783 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:37:06,784 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:37:06,784 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:37:06,785 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:37:06,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:37:06,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:37:06,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:37:06,788 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:37:06,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:37:06,789 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:37:06,789 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:37:06,789 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-23 21:37:06,790 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:37:06,790 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:37:06,790 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:37:06,791 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:37:06,791 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:37:06,792 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-23 21:37:06,792 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_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af [2023-11-23 21:37:07,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:37:07,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:37:07,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:37:07,301 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:37:07,301 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:37:07,303 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2023-11-23 21:37:10,574 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:37:10,970 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:37:10,972 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2023-11-23 21:37:10,991 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/data/5693e61e1/ab4d9902917d4a8a9e9cf7d53ad3bf5c/FLAG9d95c98a3 [2023-11-23 21:37:11,005 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/data/5693e61e1/ab4d9902917d4a8a9e9cf7d53ad3bf5c [2023-11-23 21:37:11,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:37:11,009 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:37:11,010 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:37:11,011 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:37:11,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:37:11,017 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:37:11" (1/1) ... [2023-11-23 21:37:11,018 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@efaeb40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:11, skipping insertion in model container [2023-11-23 21:37:11,018 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:37:11" (1/1) ... [2023-11-23 21:37:11,074 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:37:11,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:37:11,640 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 21:37:11,657 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:37:11,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:37:11,762 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:37:11,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:37:11,919 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:37:11,927 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:37:11,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:11 WrapperNode [2023-11-23 21:37:11,928 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:37:11,929 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:37:11,930 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:37:11,930 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:37:11,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:11" (1/1) ... [2023-11-23 21:37:11,989 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:11" (1/1) ... [2023-11-23 21:37:12,026 INFO L138 Inliner]: procedures = 167, calls = 80, calls flagged for inlining = 21, calls inlined = 6, statements flattened = 65 [2023-11-23 21:37:12,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:37:12,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:37:12,028 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:37:12,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:37:12,038 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:11" (1/1) ... [2023-11-23 21:37:12,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:11" (1/1) ... [2023-11-23 21:37:12,053 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:11" (1/1) ... [2023-11-23 21:37:12,053 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:11" (1/1) ... [2023-11-23 21:37:12,062 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:11" (1/1) ... [2023-11-23 21:37:12,085 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:11" (1/1) ... [2023-11-23 21:37:12,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:11" (1/1) ... [2023-11-23 21:37:12,089 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:11" (1/1) ... [2023-11-23 21:37:12,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:37:12,094 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:37:12,094 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:37:12,094 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:37:12,095 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:11" (1/1) ... [2023-11-23 21:37:12,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:37:12,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:37:12,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:37:12,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:37:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-11-23 21:37:12,190 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-11-23 21:37:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-11-23 21:37:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-11-23 21:37:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 21:37:12,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 21:37:12,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2023-11-23 21:37:12,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2023-11-23 21:37:12,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:37:12,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:37:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:37:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:37:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:37:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 21:37:12,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-11-23 21:37:12,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-11-23 21:37:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:37:12,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:37:12,387 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:37:12,390 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:37:12,770 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:37:12,819 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:37:12,819 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:37:12,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:37:12 BoogieIcfgContainer [2023-11-23 21:37:12,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:37:12,822 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:37:12,823 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:37:12,826 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:37:12,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:37:11" (1/3) ... [2023-11-23 21:37:12,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fbdb830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:37:12, skipping insertion in model container [2023-11-23 21:37:12,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:37:11" (2/3) ... [2023-11-23 21:37:12,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fbdb830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:37:12, skipping insertion in model container [2023-11-23 21:37:12,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:37:12" (3/3) ... [2023-11-23 21:37:12,830 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test13.i [2023-11-23 21:37:12,851 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:37:12,852 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-23 21:37:12,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:37:12,934 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;@1448adc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:37:12,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-11-23 21:37:12,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 33 states have (on average 2.090909090909091) internal successors, (69), 66 states have internal predecessors, (69), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 21:37:12,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:37:12,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:12,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:12,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:12,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:12,961 INFO L85 PathProgramCache]: Analyzing trace with hash 344557139, now seen corresponding path program 1 times [2023-11-23 21:37:12,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:12,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614807113] [2023-11-23 21:37:12,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:12,973 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 [2023-11-23 21:37:12,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:12,976 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:13,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:13,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:37:13,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:13,387 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-23 21:37:13,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-23 21:37:13,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:13,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:13,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:13,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614807113] [2023-11-23 21:37:13,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614807113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:13,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:13,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:37:13,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098662342] [2023-11-23 21:37:13,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:13,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:37:13,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:13,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:37:13,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=30, Unknown=1, NotChecked=0, Total=42 [2023-11-23 21:37:13,557 INFO L87 Difference]: Start difference. First operand has 76 states, 33 states have (on average 2.090909090909091) internal successors, (69), 66 states have internal predecessors, (69), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:14,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:14,492 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2023-11-23 21:37:14,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:37:14,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-23 21:37:14,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:14,508 INFO L225 Difference]: With dead ends: 112 [2023-11-23 21:37:14,508 INFO L226 Difference]: Without dead ends: 110 [2023-11-23 21:37:14,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=70, Unknown=1, NotChecked=0, Total=110 [2023-11-23 21:37:14,521 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 147 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 17 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:14,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 93 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 262 Invalid, 26 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:37:14,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-23 21:37:14,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 73. [2023-11-23 21:37:14,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 63 states have internal predecessors, (65), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 21:37:14,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2023-11-23 21:37:14,582 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 11 [2023-11-23 21:37:14,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:14,583 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2023-11-23 21:37:14,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:14,584 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2023-11-23 21:37:14,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:37:14,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:14,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:14,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:14,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:14,789 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:14,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:14,790 INFO L85 PathProgramCache]: Analyzing trace with hash 344557140, now seen corresponding path program 1 times [2023-11-23 21:37:14,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:14,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741644220] [2023-11-23 21:37:14,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:14,792 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 [2023-11-23 21:37:14,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:14,794 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:14,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:14,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 21:37:14,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:15,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:37:15,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 21:37:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:15,257 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:15,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:15,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741644220] [2023-11-23 21:37:15,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741644220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:15,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:15,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:37:15,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770493759] [2023-11-23 21:37:15,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:15,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:37:15,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:15,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:37:15,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:37:15,262 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:16,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:16,369 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2023-11-23 21:37:16,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:37:16,370 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-23 21:37:16,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:16,371 INFO L225 Difference]: With dead ends: 108 [2023-11-23 21:37:16,373 INFO L226 Difference]: Without dead ends: 108 [2023-11-23 21:37:16,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:37:16,375 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 162 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:16,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 80 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 21:37:16,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-23 21:37:16,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 71. [2023-11-23 21:37:16,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 61 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 21:37:16,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2023-11-23 21:37:16,394 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 11 [2023-11-23 21:37:16,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:16,395 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2023-11-23 21:37:16,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:16,395 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2023-11-23 21:37:16,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:37:16,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:16,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:16,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:16,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:16,599 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:16,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:16,600 INFO L85 PathProgramCache]: Analyzing trace with hash 344569414, now seen corresponding path program 1 times [2023-11-23 21:37:16,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:16,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784242219] [2023-11-23 21:37:16,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:16,601 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 [2023-11-23 21:37:16,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:16,603 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:16,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:16,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:37:16,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:16,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:16,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:16,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:16,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784242219] [2023-11-23 21:37:16,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784242219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:16,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:16,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:37:16,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462409543] [2023-11-23 21:37:16,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:16,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:37:16,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:16,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:37:16,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:37:16,714 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:16,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:16,838 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2023-11-23 21:37:16,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:37:16,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-23 21:37:16,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:16,841 INFO L225 Difference]: With dead ends: 77 [2023-11-23 21:37:16,841 INFO L226 Difference]: Without dead ends: 77 [2023-11-23 21:37:16,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:37:16,843 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 1 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:16,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 244 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:37:16,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-23 21:37:16,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2023-11-23 21:37:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 64 states have internal predecessors, (66), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 21:37:16,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2023-11-23 21:37:16,859 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 11 [2023-11-23 21:37:16,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:16,859 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2023-11-23 21:37:16,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:16,860 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2023-11-23 21:37:16,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:37:16,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:16,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:16,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:17,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:17,066 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:17,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:17,067 INFO L85 PathProgramCache]: Analyzing trace with hash 2087379749, now seen corresponding path program 1 times [2023-11-23 21:37:17,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:17,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153696890] [2023-11-23 21:37:17,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:17,068 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 [2023-11-23 21:37:17,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:17,070 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:17,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:17,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 21:37:17,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:17,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:17,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:17,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:17,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153696890] [2023-11-23 21:37:17,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153696890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:17,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:17,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:37:17,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742301989] [2023-11-23 21:37:17,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:17,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:37:17,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:17,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:37:17,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:37:17,504 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:18,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:18,114 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2023-11-23 21:37:18,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:37:18,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-23 21:37:18,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:18,117 INFO L225 Difference]: With dead ends: 97 [2023-11-23 21:37:18,118 INFO L226 Difference]: Without dead ends: 97 [2023-11-23 21:37:18,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:37:18,119 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 35 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:18,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 138 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:37:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-23 21:37:18,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 79. [2023-11-23 21:37:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 40 states have (on average 1.775) internal successors, (71), 67 states have internal predecessors, (71), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 21:37:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2023-11-23 21:37:18,129 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 11 [2023-11-23 21:37:18,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:18,137 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2023-11-23 21:37:18,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:18,138 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2023-11-23 21:37:18,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:37:18,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:18,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:18,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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)] Ended with exit code 0 [2023-11-23 21:37:18,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:18,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:18,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:18,342 INFO L85 PathProgramCache]: Analyzing trace with hash 2087379748, now seen corresponding path program 1 times [2023-11-23 21:37:18,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:18,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779767634] [2023-11-23 21:37:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:18,342 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 [2023-11-23 21:37:18,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:18,344 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:18,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:18,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:37:18,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:18,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:18,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:18,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779767634] [2023-11-23 21:37:18,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779767634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:18,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:18,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:37:18,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945731152] [2023-11-23 21:37:18,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:18,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:37:18,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:18,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:37:18,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:37:18,568 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:19,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:19,005 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2023-11-23 21:37:19,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:37:19,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-23 21:37:19,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:19,007 INFO L225 Difference]: With dead ends: 92 [2023-11-23 21:37:19,007 INFO L226 Difference]: Without dead ends: 92 [2023-11-23 21:37:19,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:37:19,009 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 36 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:19,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 105 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:37:19,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-23 21:37:19,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 79. [2023-11-23 21:37:19,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 40 states have (on average 1.75) internal successors, (70), 67 states have internal predecessors, (70), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 21:37:19,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2023-11-23 21:37:19,018 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 11 [2023-11-23 21:37:19,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:19,018 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2023-11-23 21:37:19,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:19,019 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2023-11-23 21:37:19,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 21:37:19,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:19,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:19,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:19,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:19,222 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:19,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:19,223 INFO L85 PathProgramCache]: Analyzing trace with hash -270035463, now seen corresponding path program 1 times [2023-11-23 21:37:19,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:19,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774362492] [2023-11-23 21:37:19,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:19,224 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 [2023-11-23 21:37:19,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:19,225 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:19,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:19,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:37:19,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:19,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-23 21:37:19,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:19,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:19,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:19,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774362492] [2023-11-23 21:37:19,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774362492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:19,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:19,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:37:19,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315076241] [2023-11-23 21:37:19,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:19,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:37:19,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:19,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:37:19,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:37:19,450 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:20,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:20,030 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2023-11-23 21:37:20,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:37:20,031 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-23 21:37:20,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:20,032 INFO L225 Difference]: With dead ends: 91 [2023-11-23 21:37:20,032 INFO L226 Difference]: Without dead ends: 91 [2023-11-23 21:37:20,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:37:20,033 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 47 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:20,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 253 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:37:20,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-23 21:37:20,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2023-11-23 21:37:20,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 40 states have (on average 1.725) internal successors, (69), 66 states have internal predecessors, (69), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 21:37:20,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2023-11-23 21:37:20,041 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 14 [2023-11-23 21:37:20,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:20,042 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2023-11-23 21:37:20,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:20,042 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2023-11-23 21:37:20,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 21:37:20,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:20,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:20,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:20,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:20,246 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:20,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:20,247 INFO L85 PathProgramCache]: Analyzing trace with hash -270035462, now seen corresponding path program 1 times [2023-11-23 21:37:20,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:20,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388897205] [2023-11-23 21:37:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:20,247 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 [2023-11-23 21:37:20,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:20,248 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:20,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:20,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 21:37:20,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:20,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:37:20,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 21:37:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:20,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:20,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:20,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388897205] [2023-11-23 21:37:20,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388897205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:20,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:20,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:37:20,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747158452] [2023-11-23 21:37:20,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:20,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:37:20,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:20,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:37:20,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:37:20,972 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 11 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:22,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:22,473 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2023-11-23 21:37:22,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 21:37:22,474 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-23 21:37:22,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:22,475 INFO L225 Difference]: With dead ends: 86 [2023-11-23 21:37:22,475 INFO L226 Difference]: Without dead ends: 86 [2023-11-23 21:37:22,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2023-11-23 21:37:22,477 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 87 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:22,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 225 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:37:22,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-23 21:37:22,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2023-11-23 21:37:22,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 40 states have (on average 1.7) internal successors, (68), 65 states have internal predecessors, (68), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 21:37:22,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2023-11-23 21:37:22,486 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 14 [2023-11-23 21:37:22,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:22,486 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2023-11-23 21:37:22,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:22,487 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2023-11-23 21:37:22,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:37:22,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:22,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:22,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:22,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:22,690 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:22,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:22,691 INFO L85 PathProgramCache]: Analyzing trace with hash 218835304, now seen corresponding path program 1 times [2023-11-23 21:37:22,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:22,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535174920] [2023-11-23 21:37:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:22,692 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 [2023-11-23 21:37:22,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:22,693 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:22,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:22,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:37:22,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:22,802 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 [2023-11-23 21:37:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:22,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:22,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:22,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535174920] [2023-11-23 21:37:22,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535174920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:22,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:22,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:37:22,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330075413] [2023-11-23 21:37:22,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:22,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:37:22,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:22,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:37:22,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:37:22,906 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:23,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:23,529 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2023-11-23 21:37:23,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:37:23,530 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-23 21:37:23,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:23,531 INFO L225 Difference]: With dead ends: 93 [2023-11-23 21:37:23,531 INFO L226 Difference]: Without dead ends: 93 [2023-11-23 21:37:23,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:37:23,532 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 25 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:23,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 254 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:37:23,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-23 21:37:23,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2023-11-23 21:37:23,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 48 states have (on average 1.6458333333333333) internal successors, (79), 73 states have internal predecessors, (79), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-23 21:37:23,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2023-11-23 21:37:23,540 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 15 [2023-11-23 21:37:23,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:23,540 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2023-11-23 21:37:23,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:23,540 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2023-11-23 21:37:23,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:37:23,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:23,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:23,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:23,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:23,744 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:23,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:23,745 INFO L85 PathProgramCache]: Analyzing trace with hash 218835305, now seen corresponding path program 1 times [2023-11-23 21:37:23,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:23,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4458365] [2023-11-23 21:37:23,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:23,746 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 [2023-11-23 21:37:23,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:23,747 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:23,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:23,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 21:37:23,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:23,842 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 [2023-11-23 21:37:24,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:24,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:24,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:24,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4458365] [2023-11-23 21:37:24,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4458365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:24,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:24,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:37:24,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266383049] [2023-11-23 21:37:24,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:24,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:37:24,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:24,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:37:24,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:37:24,030 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:24,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:24,721 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2023-11-23 21:37:24,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:37:24,722 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-23 21:37:24,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:24,723 INFO L225 Difference]: With dead ends: 91 [2023-11-23 21:37:24,723 INFO L226 Difference]: Without dead ends: 91 [2023-11-23 21:37:24,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:37:24,724 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 20 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:24,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 317 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:37:24,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-23 21:37:24,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2023-11-23 21:37:24,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 73 states have internal predecessors, (77), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-23 21:37:24,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2023-11-23 21:37:24,731 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 15 [2023-11-23 21:37:24,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:24,732 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2023-11-23 21:37:24,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:24,732 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2023-11-23 21:37:24,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:37:24,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:24,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:24,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:24,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:24,936 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:24,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:24,937 INFO L85 PathProgramCache]: Analyzing trace with hash 347918023, now seen corresponding path program 1 times [2023-11-23 21:37:24,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:24,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081481249] [2023-11-23 21:37:24,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:24,938 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 [2023-11-23 21:37:24,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:24,939 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:24,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:25,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:37:25,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:25,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:25,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:25,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081481249] [2023-11-23 21:37:25,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081481249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:25,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:25,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:37:25,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216256253] [2023-11-23 21:37:25,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:25,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:37:25,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:25,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:37:25,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:37:25,077 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:25,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:25,194 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2023-11-23 21:37:25,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:37:25,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-23 21:37:25,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:25,196 INFO L225 Difference]: With dead ends: 73 [2023-11-23 21:37:25,196 INFO L226 Difference]: Without dead ends: 73 [2023-11-23 21:37:25,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:37:25,197 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 1 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:25,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 223 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:37:25,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-23 21:37:25,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-23 21:37:25,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 40 states have (on average 1.575) internal successors, (63), 61 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 21:37:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2023-11-23 21:37:25,203 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 15 [2023-11-23 21:37:25,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:25,204 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2023-11-23 21:37:25,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:25,204 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2023-11-23 21:37:25,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 21:37:25,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:25,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:25,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:37:25,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:25,418 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:25,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:25,418 INFO L85 PathProgramCache]: Analyzing trace with hash -152668181, now seen corresponding path program 1 times [2023-11-23 21:37:25,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:25,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747273001] [2023-11-23 21:37:25,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:25,419 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 [2023-11-23 21:37:25,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:25,420 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:25,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-23 21:37:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:25,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:37:25,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:25,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:25,577 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:25,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:25,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747273001] [2023-11-23 21:37:25,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747273001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:25,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:25,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:37:25,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723955731] [2023-11-23 21:37:25,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:25,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:37:25,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:25,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:37:25,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:37:25,580 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:25,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:25,793 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2023-11-23 21:37:25,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:37:25,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-23 21:37:25,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:25,795 INFO L225 Difference]: With dead ends: 72 [2023-11-23 21:37:25,795 INFO L226 Difference]: Without dead ends: 72 [2023-11-23 21:37:25,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:37:25,796 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 9 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:25,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 148 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:37:25,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-23 21:37:25,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-11-23 21:37:25,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 40 states have (on average 1.55) internal successors, (62), 60 states have internal predecessors, (62), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 21:37:25,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2023-11-23 21:37:25,802 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 17 [2023-11-23 21:37:25,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:25,802 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2023-11-23 21:37:25,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:25,803 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2023-11-23 21:37:25,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 21:37:25,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:25,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:25,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-23 21:37:26,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:26,007 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:26,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:26,007 INFO L85 PathProgramCache]: Analyzing trace with hash -152668180, now seen corresponding path program 1 times [2023-11-23 21:37:26,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:26,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218316410] [2023-11-23 21:37:26,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:26,008 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 [2023-11-23 21:37:26,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:26,009 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:26,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-23 21:37:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:26,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:37:26,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:26,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:26,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:26,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218316410] [2023-11-23 21:37:26,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218316410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:26,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:26,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:37:26,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278052056] [2023-11-23 21:37:26,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:26,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:37:26,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:26,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:37:26,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:37:26,230 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:26,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:26,585 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2023-11-23 21:37:26,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:37:26,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-23 21:37:26,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:26,587 INFO L225 Difference]: With dead ends: 71 [2023-11-23 21:37:26,587 INFO L226 Difference]: Without dead ends: 71 [2023-11-23 21:37:26,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:37:26,588 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 65 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:26,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 186 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:37:26,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-23 21:37:26,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-11-23 21:37:26,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 40 states have (on average 1.525) internal successors, (61), 59 states have internal predecessors, (61), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 21:37:26,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2023-11-23 21:37:26,593 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 17 [2023-11-23 21:37:26,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:26,593 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2023-11-23 21:37:26,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:26,594 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2023-11-23 21:37:26,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:37:26,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:26,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:26,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-23 21:37:26,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:26,795 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:26,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:26,796 INFO L85 PathProgramCache]: Analyzing trace with hash -463742106, now seen corresponding path program 1 times [2023-11-23 21:37:26,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:26,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685588271] [2023-11-23 21:37:26,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:26,796 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 [2023-11-23 21:37:26,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:26,797 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:26,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-23 21:37:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:26,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:37:26,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:26,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:26,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:26,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685588271] [2023-11-23 21:37:26,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685588271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:26,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:26,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:37:26,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030471594] [2023-11-23 21:37:26,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:26,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:37:26,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:26,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:37:26,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:37:26,976 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:27,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:27,414 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2023-11-23 21:37:27,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:37:27,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-23 21:37:27,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:27,416 INFO L225 Difference]: With dead ends: 104 [2023-11-23 21:37:27,416 INFO L226 Difference]: Without dead ends: 104 [2023-11-23 21:37:27,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:37:27,417 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 80 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:27,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 89 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:37:27,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-23 21:37:27,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 78. [2023-11-23 21:37:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 45 states have (on average 1.5333333333333334) internal successors, (69), 65 states have internal predecessors, (69), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-23 21:37:27,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2023-11-23 21:37:27,422 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 16 [2023-11-23 21:37:27,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:27,422 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2023-11-23 21:37:27,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:27,422 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2023-11-23 21:37:27,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:37:27,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:27,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:27,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-23 21:37:27,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:27,626 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:27,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:27,626 INFO L85 PathProgramCache]: Analyzing trace with hash -463742105, now seen corresponding path program 1 times [2023-11-23 21:37:27,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:27,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484104897] [2023-11-23 21:37:27,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:27,627 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 [2023-11-23 21:37:27,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:27,628 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:27,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-23 21:37:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:27,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 21:37:27,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:27,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:27,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:27,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484104897] [2023-11-23 21:37:27,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484104897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:27,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:27,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:37:27,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025722908] [2023-11-23 21:37:27,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:27,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:37:27,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:27,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:37:27,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:37:27,881 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:28,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:28,277 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2023-11-23 21:37:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:37:28,277 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-23 21:37:28,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:28,279 INFO L225 Difference]: With dead ends: 87 [2023-11-23 21:37:28,279 INFO L226 Difference]: Without dead ends: 87 [2023-11-23 21:37:28,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:37:28,280 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 18 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:28,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 170 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:37:28,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-23 21:37:28,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2023-11-23 21:37:28,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 49 states have (on average 1.489795918367347) internal successors, (73), 70 states have internal predecessors, (73), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-23 21:37:28,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2023-11-23 21:37:28,285 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 16 [2023-11-23 21:37:28,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:28,285 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2023-11-23 21:37:28,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 21:37:28,286 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2023-11-23 21:37:28,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:37:28,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:28,287 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] [2023-11-23 21:37:28,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-23 21:37:28,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:28,493 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:28,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:28,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1388235199, now seen corresponding path program 1 times [2023-11-23 21:37:28,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:28,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297900478] [2023-11-23 21:37:28,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:28,494 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 [2023-11-23 21:37:28,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:28,495 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:28,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-23 21:37:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:28,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:37:28,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:28,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:28,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:28,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297900478] [2023-11-23 21:37:28,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297900478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:28,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:28,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:37:28,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569111963] [2023-11-23 21:37:28,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:28,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:37:28,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:28,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:37:28,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:37:28,627 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:37:28,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:28,839 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2023-11-23 21:37:28,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:37:28,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-23 21:37:28,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:28,840 INFO L225 Difference]: With dead ends: 86 [2023-11-23 21:37:28,841 INFO L226 Difference]: Without dead ends: 70 [2023-11-23 21:37:28,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:37:28,842 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 29 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:28,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 66 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:37:28,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-23 21:37:28,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-11-23 21:37:28,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 38 states have (on average 1.605263157894737) internal successors, (61), 58 states have internal predecessors, (61), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 21:37:28,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2023-11-23 21:37:28,846 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 20 [2023-11-23 21:37:28,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:28,846 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2023-11-23 21:37:28,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:37:28,847 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2023-11-23 21:37:28,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 21:37:28,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:28,848 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] [2023-11-23 21:37:28,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-23 21:37:29,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:29,051 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:29,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:29,051 INFO L85 PathProgramCache]: Analyzing trace with hash -129509533, now seen corresponding path program 1 times [2023-11-23 21:37:29,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:29,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772423833] [2023-11-23 21:37:29,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:29,052 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 [2023-11-23 21:37:29,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:29,053 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:29,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-23 21:37:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:29,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-23 21:37:29,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:29,188 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 [2023-11-23 21:37:29,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:37:29,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:37:29,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-23 21:37:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:29,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:29,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:29,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772423833] [2023-11-23 21:37:29,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772423833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:29,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:29,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 21:37:29,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586486393] [2023-11-23 21:37:29,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:29,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 21:37:29,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:29,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 21:37:29,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:37:29,808 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:37:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:31,357 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2023-11-23 21:37:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 21:37:31,358 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2023-11-23 21:37:31,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:31,359 INFO L225 Difference]: With dead ends: 86 [2023-11-23 21:37:31,359 INFO L226 Difference]: Without dead ends: 86 [2023-11-23 21:37:31,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:37:31,360 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 84 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:31,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 194 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:37:31,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-23 21:37:31,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2023-11-23 21:37:31,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 39 states have (on average 1.564102564102564) internal successors, (61), 58 states have internal predecessors, (61), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 21:37:31,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2023-11-23 21:37:31,365 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 23 [2023-11-23 21:37:31,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:31,365 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2023-11-23 21:37:31,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:37:31,366 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2023-11-23 21:37:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 21:37:31,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:31,366 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] [2023-11-23 21:37:31,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-23 21:37:31,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:31,571 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:31,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:31,571 INFO L85 PathProgramCache]: Analyzing trace with hash -129509534, now seen corresponding path program 1 times [2023-11-23 21:37:31,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:31,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917759617] [2023-11-23 21:37:31,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:31,572 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 [2023-11-23 21:37:31,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:31,574 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:31,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-23 21:37:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:31,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-23 21:37:31,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:31,709 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 [2023-11-23 21:37:31,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:37:32,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 21:37:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:32,114 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:32,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:32,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917759617] [2023-11-23 21:37:32,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917759617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:32,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:32,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 21:37:32,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712838273] [2023-11-23 21:37:32,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:32,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:37:32,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:32,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:37:32,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:37:32,117 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:37:33,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:33,422 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2023-11-23 21:37:33,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 21:37:33,423 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2023-11-23 21:37:33,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:33,424 INFO L225 Difference]: With dead ends: 88 [2023-11-23 21:37:33,424 INFO L226 Difference]: Without dead ends: 88 [2023-11-23 21:37:33,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-11-23 21:37:33,425 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 72 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:33,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 173 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 21:37:33,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-23 21:37:33,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 72. [2023-11-23 21:37:33,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 59 states have internal predecessors, (63), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 21:37:33,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2023-11-23 21:37:33,430 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 23 [2023-11-23 21:37:33,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:33,430 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2023-11-23 21:37:33,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:37:33,431 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2023-11-23 21:37:33,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:37:33,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:33,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:33,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-23 21:37:33,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:33,635 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:33,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:33,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1555663072, now seen corresponding path program 1 times [2023-11-23 21:37:33,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:33,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640549352] [2023-11-23 21:37:33,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:33,637 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 [2023-11-23 21:37:33,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:33,638 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:33,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-23 21:37:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:33,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 21:37:33,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:33,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:37:33,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:37:34,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 21:37:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:34,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:34,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:34,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640549352] [2023-11-23 21:37:34,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640549352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:34,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:34,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 21:37:34,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343050799] [2023-11-23 21:37:34,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:34,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 21:37:34,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:34,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 21:37:34,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:37:34,237 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:37:35,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:35,899 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2023-11-23 21:37:35,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 21:37:35,899 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2023-11-23 21:37:35,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:35,901 INFO L225 Difference]: With dead ends: 89 [2023-11-23 21:37:35,901 INFO L226 Difference]: Without dead ends: 89 [2023-11-23 21:37:35,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2023-11-23 21:37:35,902 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 88 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:35,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 169 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:37:35,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-23 21:37:35,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 77. [2023-11-23 21:37:35,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 63 states have internal predecessors, (73), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 21:37:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2023-11-23 21:37:35,906 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 27 [2023-11-23 21:37:35,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:35,907 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2023-11-23 21:37:35,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:37:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2023-11-23 21:37:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:37:35,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:35,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:35,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-23 21:37:36,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:36,112 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:36,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:36,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1555663073, now seen corresponding path program 1 times [2023-11-23 21:37:36,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:36,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414490081] [2023-11-23 21:37:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:36,113 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 [2023-11-23 21:37:36,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:36,114 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:36,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-23 21:37:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:36,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-23 21:37:36,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:36,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:37:36,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:37:36,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:37:36,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-23 21:37:36,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:36,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:36,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:36,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414490081] [2023-11-23 21:37:36,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414490081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:36,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:36,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 21:37:36,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067541323] [2023-11-23 21:37:36,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:36,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 21:37:36,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:36,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 21:37:36,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:37:36,927 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:37:38,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:38,776 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2023-11-23 21:37:38,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 21:37:38,776 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2023-11-23 21:37:38,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:38,777 INFO L225 Difference]: With dead ends: 83 [2023-11-23 21:37:38,778 INFO L226 Difference]: Without dead ends: 83 [2023-11-23 21:37:38,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2023-11-23 21:37:38,779 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 81 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:38,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 218 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 21:37:38,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-23 21:37:38,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2023-11-23 21:37:38,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 63 states have internal predecessors, (71), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 21:37:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2023-11-23 21:37:38,784 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 27 [2023-11-23 21:37:38,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:38,785 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2023-11-23 21:37:38,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:37:38,785 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2023-11-23 21:37:38,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 21:37:38,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:38,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:38,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-23 21:37:38,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:38,990 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:38,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:38,991 INFO L85 PathProgramCache]: Analyzing trace with hash 977526249, now seen corresponding path program 1 times [2023-11-23 21:37:38,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:38,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773047998] [2023-11-23 21:37:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:38,992 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 [2023-11-23 21:37:38,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:38,993 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:38,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-23 21:37:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:39,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 21:37:39,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:39,197 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 21:37:39,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-23 21:37:39,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:37:39,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-23 21:37:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:39,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:39,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:39,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773047998] [2023-11-23 21:37:39,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773047998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:39,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:39,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 21:37:39,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634244534] [2023-11-23 21:37:39,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:39,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 21:37:39,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:39,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 21:37:39,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:37:39,584 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:37:40,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:40,873 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2023-11-23 21:37:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 21:37:40,873 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2023-11-23 21:37:40,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:40,874 INFO L225 Difference]: With dead ends: 111 [2023-11-23 21:37:40,874 INFO L226 Difference]: Without dead ends: 111 [2023-11-23 21:37:40,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2023-11-23 21:37:40,876 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 205 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:40,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 92 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:37:40,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-23 21:37:40,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 71. [2023-11-23 21:37:40,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 58 states have internal predecessors, (64), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 21:37:40,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2023-11-23 21:37:40,880 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 28 [2023-11-23 21:37:40,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:40,881 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2023-11-23 21:37:40,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:37:40,881 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2023-11-23 21:37:40,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:37:40,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:40,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:40,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-23 21:37:41,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:41,085 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:41,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:41,085 INFO L85 PathProgramCache]: Analyzing trace with hash 343596119, now seen corresponding path program 1 times [2023-11-23 21:37:41,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:41,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167414967] [2023-11-23 21:37:41,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:41,086 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 [2023-11-23 21:37:41,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:41,086 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:41,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-23 21:37:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:41,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-23 21:37:41,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:41,358 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 21:37:41,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-23 21:37:41,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-23 21:37:41,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:37:41,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 21:37:42,093 INFO L349 Elim1Store]: treesize reduction 46, result has 35.2 percent of original size [2023-11-23 21:37:42,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 52 [2023-11-23 21:37:42,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-23 21:37:42,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-23 21:37:42,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2023-11-23 21:37:43,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:43,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:43,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:43,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167414967] [2023-11-23 21:37:43,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167414967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:43,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:43,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-23 21:37:43,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040663337] [2023-11-23 21:37:43,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:43,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-23 21:37:43,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:43,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-23 21:37:43,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=370, Unknown=1, NotChecked=0, Total=420 [2023-11-23 21:37:43,322 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand has 21 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:37:46,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:37:46,849 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2023-11-23 21:37:46,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 21:37:46,850 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2023-11-23 21:37:46,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:37:46,851 INFO L225 Difference]: With dead ends: 75 [2023-11-23 21:37:46,851 INFO L226 Difference]: Without dead ends: 75 [2023-11-23 21:37:46,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=153, Invalid=1176, Unknown=3, NotChecked=0, Total=1332 [2023-11-23 21:37:46,853 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 60 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 16 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:37:46,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 289 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 670 Invalid, 8 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 21:37:46,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-23 21:37:46,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2023-11-23 21:37:46,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 42 states have (on average 1.5) internal successors, (63), 58 states have internal predecessors, (63), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 21:37:46,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2023-11-23 21:37:46,857 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 29 [2023-11-23 21:37:46,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:37:46,857 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2023-11-23 21:37:46,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:37:46,858 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2023-11-23 21:37:46,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:37:46,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:37:46,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:37:46,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-23 21:37:47,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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 [2023-11-23 21:37:47,065 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-11-23 21:37:47,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:37:47,065 INFO L85 PathProgramCache]: Analyzing trace with hash 343596120, now seen corresponding path program 1 times [2023-11-23 21:37:47,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 21:37:47,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616043260] [2023-11-23 21:37:47,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:37:47,066 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 [2023-11-23 21:37:47,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat [2023-11-23 21:37:47,067 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/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) [2023-11-23 21:37:47,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_201b9f80-b0fb-4b04-862f-8621f1a1a915/bin/uautomizer-verify-zZY32mL2XJ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-23 21:37:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:37:47,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-23 21:37:47,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:37:47,376 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 21:37:47,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-23 21:37:47,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:37:47,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 21:37:48,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 21:37:48,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 21:37:48,376 INFO L349 Elim1Store]: treesize reduction 66, result has 35.9 percent of original size [2023-11-23 21:37:48,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 50 [2023-11-23 21:37:48,527 INFO L349 Elim1Store]: treesize reduction 60, result has 45.9 percent of original size [2023-11-23 21:37:48,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 57 [2023-11-23 21:37:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:37:49,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:37:49,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 21:37:49,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616043260] [2023-11-23 21:37:49,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616043260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:37:49,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:37:49,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-23 21:37:49,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803786232] [2023-11-23 21:37:49,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:37:49,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-23 21:37:49,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 21:37:49,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 21:37:49,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-11-23 21:37:49,961 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 22 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:37:55,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:37:57,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []