./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI --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 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:53:08,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:53:08,735 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:53:08,747 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:53:08,747 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:53:08,804 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:53:08,808 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:53:08,808 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:53:08,810 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:53:08,811 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:53:08,812 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:53:08,813 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:53:08,814 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:53:08,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:53:08,817 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:53:08,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:53:08,819 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:53:08,823 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:53:08,823 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:53:08,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:53:08,824 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:53:08,825 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:53:08,825 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:53:08,826 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:53:08,826 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:53:08,827 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:53:08,827 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:53:08,828 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:53:08,828 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:53:08,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:53:08,830 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:53:08,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:53:08,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:08,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:53:08,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:53:08,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:53:08,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:53:08,833 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:53:08,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:53:08,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:53:08,834 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:53:08,834 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_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 [2023-11-24 21:53:09,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:53:09,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:53:09,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:53:09,182 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:53:09,182 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:53:09,184 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2023-11-24 21:53:12,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:53:12,459 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:53:12,459 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2023-11-24 21:53:12,480 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/data/4530e1159/55b65061dda8423e9d422244a0bb6610/FLAG63375b459 [2023-11-24 21:53:12,495 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/data/4530e1159/55b65061dda8423e9d422244a0bb6610 [2023-11-24 21:53:12,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:53:12,500 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:53:12,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:12,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:53:12,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:53:12,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:12" (1/1) ... [2023-11-24 21:53:12,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f2b71e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:12, skipping insertion in model container [2023-11-24 21:53:12,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:12" (1/1) ... [2023-11-24 21:53:12,561 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:53:13,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:13,059 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) [2023-11-24 21:53:13,060 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4df19523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:13, skipping insertion in model container [2023-11-24 21:53:13,060 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:13,060 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:53:13,063 INFO L158 Benchmark]: Toolchain (without parser) took 561.74ms. Allocated memory was 117.4MB in the beginning and 163.6MB in the end (delta: 46.1MB). Free memory was 48.1MB in the beginning and 126.1MB in the end (delta: -78.0MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2023-11-24 21:53:13,063 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:53:13,065 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.71ms. Allocated memory was 117.4MB in the beginning and 163.6MB in the end (delta: 46.1MB). Free memory was 47.8MB in the beginning and 126.1MB in the end (delta: -78.3MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2023-11-24 21:53:13,067 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 558.71ms. Allocated memory was 117.4MB in the beginning and 163.6MB in the end (delta: 46.1MB). Free memory was 47.8MB in the beginning and 126.1MB in the end (delta: -78.3MB). Peak memory consumption was 14.3MB. 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI --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 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:53:15,616 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:53:15,729 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:53:15,737 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:53:15,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:53:15,796 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:53:15,797 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:53:15,798 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:53:15,799 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:53:15,800 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:53:15,801 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:53:15,802 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:53:15,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:53:15,804 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:53:15,805 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:53:15,806 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:53:15,807 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:53:15,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:53:15,809 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:53:15,810 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:53:15,811 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:53:15,812 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:53:15,813 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:53:15,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:53:15,814 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:53:15,815 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:53:15,816 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:53:15,817 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:53:15,817 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:53:15,818 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:53:15,819 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:53:15,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:53:15,820 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:53:15,820 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:53:15,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:15,821 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:53:15,822 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:53:15,822 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:53:15,823 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:53:15,823 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:53:15,823 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:53:15,824 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:53:15,824 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:53:15,825 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:53:15,825 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_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22dc13e3a229fecb317fd9f602c1cc7d4d730ee1501bd597861fd3e87e82c9e9 [2023-11-24 21:53:16,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:53:16,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:53:16,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:53:16,381 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:53:16,381 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:53:16,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2023-11-24 21:53:19,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:53:20,300 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:53:20,301 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/sv-benchmarks/c/ldv-memsafety/memleaks_test4-2.i [2023-11-24 21:53:20,333 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/data/0d17b7854/d7a0a2f490304d949f84762e581538e7/FLAG181cdc850 [2023-11-24 21:53:20,357 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/data/0d17b7854/d7a0a2f490304d949f84762e581538e7 [2023-11-24 21:53:20,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:53:20,371 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:53:20,373 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:20,374 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:53:20,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:53:20,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:20" (1/1) ... [2023-11-24 21:53:20,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58abc43e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:20, skipping insertion in model container [2023-11-24 21:53:20,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:20" (1/1) ... [2023-11-24 21:53:20,455 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:53:21,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:21,082 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:53:21,100 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:53:21,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:21,221 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:53:21,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:21,359 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:53:21,368 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:53:21,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:21 WrapperNode [2023-11-24 21:53:21,369 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:21,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:53:21,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:53:21,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:53:21,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:21" (1/1) ... [2023-11-24 21:53:21,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:21" (1/1) ... [2023-11-24 21:53:21,437 INFO L138 Inliner]: procedures = 165, calls = 71, calls flagged for inlining = 21, calls inlined = 3, statements flattened = 26 [2023-11-24 21:53:21,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:53:21,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:53:21,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:53:21,439 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:53:21,454 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:21" (1/1) ... [2023-11-24 21:53:21,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:21" (1/1) ... [2023-11-24 21:53:21,459 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:21" (1/1) ... [2023-11-24 21:53:21,476 INFO L175 MemorySlicer]: Split 2 memory accesses to 2 slices as follows [2, 0]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 0 writes are split as follows [0, 0]. [2023-11-24 21:53:21,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:21" (1/1) ... [2023-11-24 21:53:21,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:21" (1/1) ... [2023-11-24 21:53:21,486 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:21" (1/1) ... [2023-11-24 21:53:21,488 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:21" (1/1) ... [2023-11-24 21:53:21,490 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:21" (1/1) ... [2023-11-24 21:53:21,492 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:21" (1/1) ... [2023-11-24 21:53:21,496 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:53:21,497 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:53:21,497 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:53:21,497 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:53:21,498 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:21" (1/1) ... [2023-11-24 21:53:21,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:21,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:53:21,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:53:21,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:53:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-24 21:53:21,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-24 21:53:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:53:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:53:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:53:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-24 21:53:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-24 21:53:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:53:21,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:53:21,845 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:53:21,847 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:53:22,068 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:53:22,104 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:53:22,105 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:53:22,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:22 BoogieIcfgContainer [2023-11-24 21:53:22,107 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:53:22,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:53:22,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:53:22,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:53:22,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:53:20" (1/3) ... [2023-11-24 21:53:22,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6f69ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:53:22, skipping insertion in model container [2023-11-24 21:53:22,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:21" (2/3) ... [2023-11-24 21:53:22,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6f69ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:53:22, skipping insertion in model container [2023-11-24 21:53:22,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:22" (3/3) ... [2023-11-24 21:53:22,124 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test4-2.i [2023-11-24 21:53:22,150 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:53:22,150 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-24 21:53:22,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:53:22,255 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;@1b179f93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:53:22,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-24 21:53:22,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 15 states have (on average 1.6) internal successors, (24), 22 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:53:22,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 21:53:22,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:22,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:22,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2023-11-24 21:53:22,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:22,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1128745653, now seen corresponding path program 1 times [2023-11-24 21:53:22,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:22,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013298311] [2023-11-24 21:53:22,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:22,302 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 [2023-11-24 21:53:22,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:22,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:53:22,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:22,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:53:22,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:22,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:22,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:22,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013298311] [2023-11-24 21:53:22,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013298311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:22,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:22,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:53:22,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273112992] [2023-11-24 21:53:22,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:22,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:53:22,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:22,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:53:22,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:53:22,680 INFO L87 Difference]: Start difference. First operand has 26 states, 15 states have (on average 1.6) internal successors, (24), 22 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-24 21:53:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:22,784 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2023-11-24 21:53:22,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:53:22,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2023-11-24 21:53:22,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:22,798 INFO L225 Difference]: With dead ends: 44 [2023-11-24 21:53:22,798 INFO L226 Difference]: Without dead ends: 43 [2023-11-24 21:53:22,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:53:22,813 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 14 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:22,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 77 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:53:22,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-24 21:53:22,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 29. [2023-11-24 21:53:22,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 24 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 21:53:22,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-11-24 21:53:22,873 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 10 [2023-11-24 21:53:22,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:22,874 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-11-24 21:53:22,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-24 21:53:22,874 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-11-24 21:53:22,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 21:53:22,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:22,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:22,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:23,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:23,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2023-11-24 21:53:23,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:23,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2016249334, now seen corresponding path program 1 times [2023-11-24 21:53:23,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:23,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20030692] [2023-11-24 21:53:23,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:23,082 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 [2023-11-24 21:53:23,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:23,085 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:53:23,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:23,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:53:23,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:23,197 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:23,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:23,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20030692] [2023-11-24 21:53:23,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20030692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:23,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:23,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:53:23,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922576955] [2023-11-24 21:53:23,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:23,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:53:23,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:23,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:53:23,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:53:23,202 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-24 21:53:23,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:23,271 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-11-24 21:53:23,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:53:23,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 10 [2023-11-24 21:53:23,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:23,273 INFO L225 Difference]: With dead ends: 39 [2023-11-24 21:53:23,274 INFO L226 Difference]: Without dead ends: 37 [2023-11-24 21:53:23,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:53:23,276 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:23,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 78 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:53:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-24 21:53:23,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 25. [2023-11-24 21:53:23,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 21 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:53:23,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2023-11-24 21:53:23,285 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 10 [2023-11-24 21:53:23,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:23,286 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2023-11-24 21:53:23,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-24 21:53:23,286 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2023-11-24 21:53:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 21:53:23,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:23,287 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:23,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:23,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:23,490 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2023-11-24 21:53:23,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:23,491 INFO L85 PathProgramCache]: Analyzing trace with hash -391502999, now seen corresponding path program 1 times [2023-11-24 21:53:23,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:23,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589056953] [2023-11-24 21:53:23,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:23,492 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 [2023-11-24 21:53:23,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:23,531 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:53:23,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:23,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:53:23,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:23,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 21:53:23,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:23,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:23,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589056953] [2023-11-24 21:53:23,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589056953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:23,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:23,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:53:23,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111316331] [2023-11-24 21:53:23,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:23,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:53:23,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:23,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:53:23,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:53:23,685 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 21:53:23,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:23,713 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2023-11-24 21:53:23,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:53:23,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2023-11-24 21:53:23,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:23,716 INFO L225 Difference]: With dead ends: 24 [2023-11-24 21:53:23,716 INFO L226 Difference]: Without dead ends: 24 [2023-11-24 21:53:23,716 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 [2023-11-24 21:53:23,718 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:23,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 72 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:53:23,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-24 21:53:23,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-24 21:53:23,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 20 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:53:23,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2023-11-24 21:53:23,730 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 15 [2023-11-24 21:53:23,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:23,730 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2023-11-24 21:53:23,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 21:53:23,731 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2023-11-24 21:53:23,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 21:53:23,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:23,733 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:23,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:23,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:23,936 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2023-11-24 21:53:23,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:23,936 INFO L85 PathProgramCache]: Analyzing trace with hash 748308968, now seen corresponding path program 1 times [2023-11-24 21:53:23,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:23,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046049324] [2023-11-24 21:53:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:23,937 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 [2023-11-24 21:53:23,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:23,944 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:53:23,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:24,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:53:24,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:24,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:24,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:24,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046049324] [2023-11-24 21:53:24,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046049324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:24,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:24,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:53:24,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384182049] [2023-11-24 21:53:24,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:24,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:53:24,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:24,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:53:24,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:53:24,607 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:53:24,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:24,971 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2023-11-24 21:53:24,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:53:24,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-11-24 21:53:24,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:24,974 INFO L225 Difference]: With dead ends: 45 [2023-11-24 21:53:24,974 INFO L226 Difference]: Without dead ends: 45 [2023-11-24 21:53:24,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:53:24,976 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 43 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:24,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 70 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 21:53:24,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-24 21:53:24,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2023-11-24 21:53:24,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 27 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-24 21:53:24,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2023-11-24 21:53:24,986 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 16 [2023-11-24 21:53:24,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:24,986 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2023-11-24 21:53:24,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:53:24,987 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2023-11-24 21:53:24,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 21:53:24,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:24,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:24,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:53:25,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:25,192 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2023-11-24 21:53:25,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:25,193 INFO L85 PathProgramCache]: Analyzing trace with hash 483535112, now seen corresponding path program 1 times [2023-11-24 21:53:25,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:25,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846124983] [2023-11-24 21:53:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:25,195 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 [2023-11-24 21:53:25,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:25,196 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:53:25,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:25,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:53:25,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:25,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:25,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:25,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:25,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846124983] [2023-11-24 21:53:25,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846124983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:25,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:25,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:53:25,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190081921] [2023-11-24 21:53:25,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:25,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:53:25,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:25,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:53:25,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:53:25,352 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:53:25,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:25,390 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2023-11-24 21:53:25,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:53:25,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-11-24 21:53:25,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:25,393 INFO L225 Difference]: With dead ends: 31 [2023-11-24 21:53:25,394 INFO L226 Difference]: Without dead ends: 27 [2023-11-24 21:53:25,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:53:25,402 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:25,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:53:25,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-24 21:53:25,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-24 21:53:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2023-11-24 21:53:25,418 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2023-11-24 21:53:25,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:25,424 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2023-11-24 21:53:25,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:53:25,425 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2023-11-24 21:53:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 21:53:25,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:25,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:25,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:25,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:25,629 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2023-11-24 21:53:25,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:25,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1722741579, now seen corresponding path program 1 times [2023-11-24 21:53:25,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:25,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400122955] [2023-11-24 21:53:25,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:25,630 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 [2023-11-24 21:53:25,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:25,632 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:53:25,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:25,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:53:25,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:25,745 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 [2023-11-24 21:53:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 21:53:25,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:25,799 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:25,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400122955] [2023-11-24 21:53:25,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400122955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:25,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:25,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:53:25,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641482654] [2023-11-24 21:53:25,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:25,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:53:25,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:25,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:53:25,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:53:25,802 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 21:53:25,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:25,875 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2023-11-24 21:53:25,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:53:25,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-11-24 21:53:25,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:25,879 INFO L225 Difference]: With dead ends: 31 [2023-11-24 21:53:25,879 INFO L226 Difference]: Without dead ends: 31 [2023-11-24 21:53:25,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:53:25,882 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:25,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:53:25,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-24 21:53:25,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-24 21:53:25,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:25,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2023-11-24 21:53:25,903 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 17 [2023-11-24 21:53:25,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:25,904 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2023-11-24 21:53:25,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 21:53:25,905 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2023-11-24 21:53:25,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 21:53:25,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:25,906 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:25,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:26,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:26,110 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2023-11-24 21:53:26,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:26,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1684722036, now seen corresponding path program 1 times [2023-11-24 21:53:26,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:26,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769186200] [2023-11-24 21:53:26,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:26,111 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 [2023-11-24 21:53:26,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:26,113 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:53:26,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:26,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:53:26,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:26,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 21:53:26,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:26,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:26,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769186200] [2023-11-24 21:53:26,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769186200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:26,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:26,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:53:26,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751415606] [2023-11-24 21:53:26,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:26,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:53:26,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:26,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:53:26,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:53:26,230 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 21:53:26,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:26,280 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2023-11-24 21:53:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:53:26,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-11-24 21:53:26,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:26,282 INFO L225 Difference]: With dead ends: 36 [2023-11-24 21:53:26,282 INFO L226 Difference]: Without dead ends: 36 [2023-11-24 21:53:26,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:53:26,283 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:26,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 74 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:53:26,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-24 21:53:26,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2023-11-24 21:53:26,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:26,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2023-11-24 21:53:26,288 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 17 [2023-11-24 21:53:26,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:26,289 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2023-11-24 21:53:26,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 21:53:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2023-11-24 21:53:26,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-24 21:53:26,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:26,290 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:26,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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)] Ended with exit code 0 [2023-11-24 21:53:26,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:26,493 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2023-11-24 21:53:26,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:26,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1865381450, now seen corresponding path program 1 times [2023-11-24 21:53:26,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:26,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804952658] [2023-11-24 21:53:26,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:26,495 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 [2023-11-24 21:53:26,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:26,496 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:53:26,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:26,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:53:26,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 21:53:26,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:53:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 21:53:26,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:26,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804952658] [2023-11-24 21:53:26,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804952658] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:53:26,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:53:26,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-11-24 21:53:26,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966534983] [2023-11-24 21:53:26,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:53:26,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:53:26,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:26,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:53:26,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:53:26,688 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:53:26,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:26,712 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2023-11-24 21:53:26,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:53:26,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-11-24 21:53:26,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:26,715 INFO L225 Difference]: With dead ends: 25 [2023-11-24 21:53:26,716 INFO L226 Difference]: Without dead ends: 25 [2023-11-24 21:53:26,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:53:26,717 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:26,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 57 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:53:26,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-24 21:53:26,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-24 21:53:26,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2023-11-24 21:53:26,730 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2023-11-24 21:53:26,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:26,730 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2023-11-24 21:53:26,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:53:26,730 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2023-11-24 21:53:26,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 21:53:26,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:26,731 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:26,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-24 21:53:26,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:26,936 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2023-11-24 21:53:26,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:26,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1992250157, now seen corresponding path program 1 times [2023-11-24 21:53:26,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:26,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547450169] [2023-11-24 21:53:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:26,938 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 [2023-11-24 21:53:26,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:26,939 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:53:26,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:27,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:53:27,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:27,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:53:27,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 21:53:27,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:27,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547450169] [2023-11-24 21:53:27,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547450169] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:53:27,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:53:27,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2023-11-24 21:53:27,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250845156] [2023-11-24 21:53:27,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:53:27,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:53:27,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:27,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:53:27,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:53:27,435 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 21:53:27,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:27,585 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2023-11-24 21:53:27,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:53:27,586 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19 [2023-11-24 21:53:27,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:27,587 INFO L225 Difference]: With dead ends: 24 [2023-11-24 21:53:27,587 INFO L226 Difference]: Without dead ends: 24 [2023-11-24 21:53:27,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:53:27,588 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:27,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 37 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:53:27,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-24 21:53:27,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-24 21:53:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:27,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2023-11-24 21:53:27,592 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 19 [2023-11-24 21:53:27,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:27,593 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2023-11-24 21:53:27,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 21:53:27,593 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2023-11-24 21:53:27,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 21:53:27,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:27,594 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:27,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:27,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:27,795 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2023-11-24 21:53:27,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:27,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1630212780, now seen corresponding path program 1 times [2023-11-24 21:53:27,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:27,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100248711] [2023-11-24 21:53:27,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:27,797 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 [2023-11-24 21:53:27,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:27,798 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:53:27,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:27,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:53:27,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:27,901 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 [2023-11-24 21:53:28,031 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-24 21:53:28,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-24 21:53:28,126 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 16 treesize of output 13 [2023-11-24 21:53:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:28,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:53:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:28,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:28,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100248711] [2023-11-24 21:53:28,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100248711] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:53:28,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:53:28,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2023-11-24 21:53:28,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547677223] [2023-11-24 21:53:28,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:53:28,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 21:53:28,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:28,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 21:53:28,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:53:28,651 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:28,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:28,879 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2023-11-24 21:53:28,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:53:28,880 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-11-24 21:53:28,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:28,880 INFO L225 Difference]: With dead ends: 31 [2023-11-24 21:53:28,881 INFO L226 Difference]: Without dead ends: 31 [2023-11-24 21:53:28,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-24 21:53:28,882 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:28,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 79 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 21:53:28,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-24 21:53:28,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-24 21:53:28,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:28,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2023-11-24 21:53:28,886 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 20 [2023-11-24 21:53:28,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:28,886 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2023-11-24 21:53:28,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:28,887 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2023-11-24 21:53:28,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 21:53:28,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:28,892 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:28,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:29,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:29,093 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2023-11-24 21:53:29,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:29,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1433699275, now seen corresponding path program 1 times [2023-11-24 21:53:29,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:29,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206890043] [2023-11-24 21:53:29,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:29,095 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 [2023-11-24 21:53:29,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:29,099 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:53:29,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:29,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:53:29,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:29,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:53:29,413 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 16 treesize of output 13 [2023-11-24 21:53:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:29,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:53:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:29,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:29,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206890043] [2023-11-24 21:53:29,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206890043] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:53:29,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:53:29,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2023-11-24 21:53:29,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666169413] [2023-11-24 21:53:29,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:53:29,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 21:53:29,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:29,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 21:53:29,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-24 21:53:29,814 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 14 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:30,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:30,146 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2023-11-24 21:53:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:53:30,146 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-11-24 21:53:30,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:30,147 INFO L225 Difference]: With dead ends: 30 [2023-11-24 21:53:30,147 INFO L226 Difference]: Without dead ends: 30 [2023-11-24 21:53:30,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-24 21:53:30,148 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:30,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 68 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 21:53:30,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-24 21:53:30,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 23. [2023-11-24 21:53:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:30,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-11-24 21:53:30,151 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2023-11-24 21:53:30,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:30,151 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-11-24 21:53:30,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 21:53:30,152 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-11-24 21:53:30,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-24 21:53:30,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:30,152 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:53:30,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:30,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:53:30,353 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2023-11-24 21:53:30,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:30,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1028579505, now seen corresponding path program 1 times [2023-11-24 21:53:30,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:53:30,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295177079] [2023-11-24 21:53:30,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:30,354 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 [2023-11-24 21:53:30,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:53:30,355 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:53:30,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:53:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:30,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-24 21:53:30,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:38,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 21:53:38,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:53:39,121 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret43#1.base_25| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret43#1.base_25|))) (= |c_ULTIMATE.start_main_old_#valid#1| (store (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret43#1.base_25| (_ bv0 1)) |c_ULTIMATE.start_entry_point_~p~0#1.base| (_ bv0 1))))) is different from false [2023-11-24 21:53:39,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:53:39,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295177079] [2023-11-24 21:53:39,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295177079] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:53:39,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2010136908] [2023-11-24 21:53:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:39,124 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 21:53:39,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/cvc4 [2023-11-24 21:53:39,130 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 21:53:39,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53cd236-1870-4c83-aa29-c29a2a9cb0ae/bin/uautomizer-verify-NlZe1sFDwI/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-11-24 21:53:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:39,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-24 21:53:39,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:53:53,188 WARN L876 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32))) (exists ((|ULTIMATE.start_entry_point_~q~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 1)) (|ULTIMATE.start_entry_point_~p~0#1.base| (_ BitVec 32))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~p~0#1.base| (_ bv1 1)))) (and (not (= |ULTIMATE.start_entry_point_~p~0#1.base| (_ bv0 32))) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~q~0#1.base| (_ bv0 1)) |ULTIMATE.start_entry_point_~p~0#1.base| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~p~0#1.base| (select (store .cse0 |ULTIMATE.start_entry_point_~q~0#1.base| v_DerPreprocessor_4) |ULTIMATE.start_entry_point_~p~0#1.base|)) |ULTIMATE.start_entry_point_~q~0#1.base|)) (= (_ bv0 1) (bvadd (select (store .cse0 |ULTIMATE.start_entry_point_~q~0#1.base| (_ bv0 1)) |ULTIMATE.start_entry_point_~p~0#1.base|) (_ bv1 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~p~0#1.base|) (_ bv0 1)))))) is different from true [2023-11-24 21:53:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 21:53:53,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:53:53,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2010136908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:53,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 21:53:53,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2023-11-24 21:53:53,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281740127] [2023-11-24 21:53:53,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:53,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 21:53:53,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:53:53,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 21:53:53,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=440, Unknown=7, NotChecked=86, Total=600 [2023-11-24 21:53:53,243 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 13 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:53:57,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:54:01,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:54:05,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:54:09,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:54:13,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]