./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl --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 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:27:12,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:27:12,857 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:27:12,863 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:27:12,864 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:27:12,890 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:27:12,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:27:12,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:27:12,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:27:12,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:27:12,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:27:12,894 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:27:12,895 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:27:12,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:27:12,896 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:27:12,896 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:27:12,897 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:27:12,898 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:27:12,898 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:27:12,899 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:27:12,899 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:27:12,900 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:27:12,901 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:27:12,901 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:27:12,902 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:27:12,902 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:27:12,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:27:12,904 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:27:12,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:27:12,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:27:12,905 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:27:12,906 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:27:12,906 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:27:12,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:27:12,907 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:27:12,907 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:27:12,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:27:12,908 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:27:12,908 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_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 [2023-11-12 02:27:13,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:27:13,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:27:13,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:27:13,187 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:27:13,188 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:27:13,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2023-11-12 02:27:16,661 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:27:17,114 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:27:17,115 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2023-11-12 02:27:17,139 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/data/42aafaebc/31df08620c4f4cb09806701942797706/FLAG436a0c43c [2023-11-12 02:27:17,158 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/data/42aafaebc/31df08620c4f4cb09806701942797706 [2023-11-12 02:27:17,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:27:17,170 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:27:17,173 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:27:17,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:27:17,180 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:27:17,184 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:27:17" (1/1) ... [2023-11-12 02:27:17,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d445c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:17, skipping insertion in model container [2023-11-12 02:27:17,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:27:17" (1/1) ... [2023-11-12 02:27:17,274 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:27:17,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:27:17,754 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) [2023-11-12 02:27:17,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@751cb1f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:17, skipping insertion in model container [2023-11-12 02:27:17,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:27:17,756 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 02:27:17,758 INFO L158 Benchmark]: Toolchain (without parser) took 586.57ms. Allocated memory is still 161.5MB. Free memory was 128.8MB in the beginning and 114.6MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 02:27:17,759 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory was 85.5MB in the beginning and 85.4MB in the end (delta: 79.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:27:17,760 INFO L158 Benchmark]: CACSL2BoogieTranslator took 582.22ms. Allocated memory is still 161.5MB. Free memory was 128.6MB in the beginning and 114.6MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 02:27:17,762 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory was 85.5MB in the beginning and 85.4MB in the end (delta: 79.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 582.22ms. Allocated memory is still 161.5MB. Free memory was 128.6MB in the beginning and 114.6MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl --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 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:27:20,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:27:20,446 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-12 02:27:20,459 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:27:20,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:27:20,521 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:27:20,522 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:27:20,523 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:27:20,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:27:20,533 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:27:20,534 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:27:20,534 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:27:20,535 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:27:20,535 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:27:20,536 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:27:20,537 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:27:20,537 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:27:20,537 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:27:20,538 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:27:20,538 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:27:20,539 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:27:20,540 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:27:20,541 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:27:20,541 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 02:27:20,542 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 02:27:20,542 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:27:20,543 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:27:20,543 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:27:20,544 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:27:20,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:27:20,547 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:27:20,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:27:20,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:27:20,548 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:27:20,548 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-12 02:27:20,549 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 02:27:20,549 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:27:20,549 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:27:20,550 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:27:20,551 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-12 02:27:20,551 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:27:20,552 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_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02acfb70bf31515ceb84abad2b1306b0eab86ac3ab86c4ec829443e87c9da071 [2023-11-12 02:27:20,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:27:21,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:27:21,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:27:21,033 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:27:21,033 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:27:21,035 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2023-11-12 02:27:24,577 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:27:24,979 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:27:24,980 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/sv-benchmarks/c/ldv-memsafety/memleaks_test11_1.i [2023-11-12 02:27:25,002 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/data/274044e06/3efdf472f8e747adae5373f298f20f60/FLAG7d22d75f3 [2023-11-12 02:27:25,020 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/data/274044e06/3efdf472f8e747adae5373f298f20f60 [2023-11-12 02:27:25,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:27:25,031 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:27:25,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:27:25,033 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:27:25,038 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:27:25,039 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:27:25" (1/1) ... [2023-11-12 02:27:25,040 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1077cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:25, skipping insertion in model container [2023-11-12 02:27:25,040 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:27:25" (1/1) ... [2023-11-12 02:27:25,094 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:27:25,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:27:25,635 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 02:27:25,647 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:27:25,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:27:25,757 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:27:25,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:27:25,916 WARN L672 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:27:25,925 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:27:25,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:25 WrapperNode [2023-11-12 02:27:25,926 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:27:25,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:27:25,927 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:27:25,927 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:27:25,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:25" (1/1) ... [2023-11-12 02:27:25,983 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:25" (1/1) ... [2023-11-12 02:27:26,025 INFO L138 Inliner]: procedures = 169, calls = 88, calls flagged for inlining = 26, calls inlined = 8, statements flattened = 95 [2023-11-12 02:27:26,026 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:27:26,027 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:27:26,027 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:27:26,028 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:27:26,038 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:25" (1/1) ... [2023-11-12 02:27:26,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:25" (1/1) ... [2023-11-12 02:27:26,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:25" (1/1) ... [2023-11-12 02:27:26,056 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:25" (1/1) ... [2023-11-12 02:27:26,067 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:25" (1/1) ... [2023-11-12 02:27:26,082 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:25" (1/1) ... [2023-11-12 02:27:26,099 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:25" (1/1) ... [2023-11-12 02:27:26,101 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:25" (1/1) ... [2023-11-12 02:27:26,105 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:27:26,106 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:27:26,106 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:27:26,106 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:27:26,107 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:25" (1/1) ... [2023-11-12 02:27:26,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:27:26,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:27:26,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:27:26,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:27:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 02:27:26,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 02:27:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_i2c_set_clientdata [2023-11-12 02:27:26,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_i2c_set_clientdata [2023-11-12 02:27:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:27:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:27:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:27:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:27:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:27:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:27:26,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:27:26,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:27:26,459 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:27:26,462 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:27:27,002 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:27:27,011 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:27:27,011 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:27:27,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:27:27 BoogieIcfgContainer [2023-11-12 02:27:27,015 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:27:27,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:27:27,018 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:27:27,022 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:27:27,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:27:25" (1/3) ... [2023-11-12 02:27:27,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdf9716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:27:27, skipping insertion in model container [2023-11-12 02:27:27,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:27:25" (2/3) ... [2023-11-12 02:27:27,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdf9716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:27:27, skipping insertion in model container [2023-11-12 02:27:27,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:27:27" (3/3) ... [2023-11-12 02:27:27,027 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test11_1.i [2023-11-12 02:27:27,051 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:27:27,052 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-12 02:27:27,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:27:27,135 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;@6083f364, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:27:27,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-12 02:27:27,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 51 states have (on average 1.7058823529411764) internal successors, (87), 81 states have internal predecessors, (87), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-12 02:27:27,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 02:27:27,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:27,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:27,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-12 02:27:27,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:27,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2113619829, now seen corresponding path program 1 times [2023-11-12 02:27:27,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:27:27,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730997054] [2023-11-12 02:27:27,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:27,179 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 [2023-11-12 02:27:27,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:27:27,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:27:27,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:27:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:27,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:27:27,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:27:27,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:27:27,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:27:27,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730997054] [2023-11-12 02:27:27,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730997054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:27,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:27,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:27:27,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60104992] [2023-11-12 02:27:27,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:27,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:27:27,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:27:27,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:27:27,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:27:27,471 INFO L87 Difference]: Start difference. First operand has 90 states, 51 states have (on average 1.7058823529411764) internal successors, (87), 81 states have internal predecessors, (87), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:27:27,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:27,692 INFO L93 Difference]: Finished difference Result 163 states and 188 transitions. [2023-11-12 02:27:27,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:27:27,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-12 02:27:27,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:27,712 INFO L225 Difference]: With dead ends: 163 [2023-11-12 02:27:27,712 INFO L226 Difference]: Without dead ends: 161 [2023-11-12 02:27:27,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:27:27,727 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 69 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:27,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 446 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:27:27,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-12 02:27:27,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 92. [2023-11-12 02:27:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 82 states have internal predecessors, (88), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-12 02:27:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2023-11-12 02:27:27,810 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 11 [2023-11-12 02:27:27,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:27,811 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2023-11-12 02:27:27,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:27:27,811 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2023-11-12 02:27:27,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 02:27:27,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:27,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:27,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:27:28,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:27:28,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-12 02:27:28,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:28,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1293843786, now seen corresponding path program 1 times [2023-11-12 02:27:28,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:27:28,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796818189] [2023-11-12 02:27:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:28,030 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 [2023-11-12 02:27:28,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:27:28,032 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:27:28,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:27:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:28,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:27:28,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:28,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:27:28,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:27:28,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:27:28,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796818189] [2023-11-12 02:27:28,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796818189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:28,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:28,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:27:28,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660094729] [2023-11-12 02:27:28,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:28,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:27:28,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:27:28,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:27:28,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:27:28,155 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:27:28,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:28,518 INFO L93 Difference]: Finished difference Result 163 states and 186 transitions. [2023-11-12 02:27:28,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:27:28,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-12 02:27:28,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:28,521 INFO L225 Difference]: With dead ends: 163 [2023-11-12 02:27:28,522 INFO L226 Difference]: Without dead ends: 161 [2023-11-12 02:27:28,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:27:28,523 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 70 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:28,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 309 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:27:28,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-12 02:27:28,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 88. [2023-11-12 02:27:28,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 50 states have (on average 1.68) internal successors, (84), 79 states have internal predecessors, (84), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-12 02:27:28,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2023-11-12 02:27:28,538 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 11 [2023-11-12 02:27:28,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:28,538 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2023-11-12 02:27:28,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:27:28,539 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2023-11-12 02:27:28,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 02:27:28,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:28,540 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:28,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:27:28,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:27:28,753 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-12 02:27:28,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:28,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1793026591, now seen corresponding path program 1 times [2023-11-12 02:27:28,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:27:28,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838304339] [2023-11-12 02:27:28,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:28,755 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 [2023-11-12 02:27:28,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:27:28,756 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:27:28,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:27:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:28,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:27:28,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:28,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:27:28,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:27:28,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:27:28,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838304339] [2023-11-12 02:27:28,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838304339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:28,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:28,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:27:28,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501680344] [2023-11-12 02:27:28,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:28,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:27:28,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:27:28,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:27:28,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:27:28,886 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 5 states, 5 states have (on average 2.4) 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) [2023-11-12 02:27:28,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:28,995 INFO L93 Difference]: Finished difference Result 158 states and 179 transitions. [2023-11-12 02:27:28,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:27:28,996 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), 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 [2023-11-12 02:27:29,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:29,010 INFO L225 Difference]: With dead ends: 158 [2023-11-12 02:27:29,010 INFO L226 Difference]: Without dead ends: 158 [2023-11-12 02:27:29,010 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 [2023-11-12 02:27:29,012 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 66 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 407 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 [2023-11-12 02:27:29,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 407 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:27:29,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-12 02:27:29,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 92. [2023-11-12 02:27:29,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 53 states have (on average 1.6415094339622642) internal successors, (87), 82 states have internal predecessors, (87), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-12 02:27:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2023-11-12 02:27:29,025 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 17 [2023-11-12 02:27:29,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:29,026 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2023-11-12 02:27:29,026 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), 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) [2023-11-12 02:27:29,027 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2023-11-12 02:27:29,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 02:27:29,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:29,028 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:29,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:27:29,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:27:29,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-12 02:27:29,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:29,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1793026607, now seen corresponding path program 1 times [2023-11-12 02:27:29,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:27:29,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939064547] [2023-11-12 02:27:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:29,242 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 [2023-11-12 02:27:29,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:27:29,243 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:27:29,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:27:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:29,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:27:29,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:29,356 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 02:27:29,530 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-12 02:27:29,531 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-12 02:27:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:27:29,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:32,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:27:32,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:27:32,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939064547] [2023-11-12 02:27:32,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939064547] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:27:32,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:27:32,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2023-11-12 02:27:32,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435215974] [2023-11-12 02:27:32,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:32,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:27:32,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:27:32,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:27:32,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:27:32,604 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2023-11-12 02:27:33,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:33,118 INFO L93 Difference]: Finished difference Result 133 states and 148 transitions. [2023-11-12 02:27:33,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:27:33,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 17 [2023-11-12 02:27:33,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:33,120 INFO L225 Difference]: With dead ends: 133 [2023-11-12 02:27:33,120 INFO L226 Difference]: Without dead ends: 133 [2023-11-12 02:27:33,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:27:33,122 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 67 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:33,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 267 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:27:33,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-12 02:27:33,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 103. [2023-11-12 02:27:33,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 63 states have (on average 1.6031746031746033) internal successors, (101), 90 states have internal predecessors, (101), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-12 02:27:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 120 transitions. [2023-11-12 02:27:33,133 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 120 transitions. Word has length 17 [2023-11-12 02:27:33,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:33,133 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 120 transitions. [2023-11-12 02:27:33,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2023-11-12 02:27:33,134 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 120 transitions. [2023-11-12 02:27:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 02:27:33,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:33,135 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:33,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:27:33,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:27:33,347 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-12 02:27:33,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:33,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1793026606, now seen corresponding path program 1 times [2023-11-12 02:27:33,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:27:33,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885129155] [2023-11-12 02:27:33,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:33,350 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 [2023-11-12 02:27:33,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:27:33,351 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:27:33,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:27:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:33,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-12 02:27:33,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:33,451 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 02:27:33,461 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:27:33,634 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-11-12 02:27:33,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:27:33,669 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-12 02:27:33,685 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 02:27:33,685 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 02:27:33,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-12 02:27:33,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:34,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:27:34,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885129155] [2023-11-12 02:27:34,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885129155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:34,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1253179458] [2023-11-12 02:27:34,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:34,084 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 02:27:34,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 [2023-11-12 02:27:34,110 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 02:27:34,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-12 02:27:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:34,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-12 02:27:34,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:34,271 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 02:27:34,278 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:27:34,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:27:34,438 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-12 02:27:34,454 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 02:27:34,455 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 02:27:34,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-12 02:27:34,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:34,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1253179458] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:34,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:27:34,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-11-12 02:27:34,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857491744] [2023-11-12 02:27:34,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:34,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:27:34,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:27:34,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:27:34,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2023-11-12 02:27:34,728 INFO L87 Difference]: Start difference. First operand 103 states and 120 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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) [2023-11-12 02:27:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:36,008 INFO L93 Difference]: Finished difference Result 224 states and 254 transitions. [2023-11-12 02:27:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:27:36,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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 17 [2023-11-12 02:27:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:36,014 INFO L225 Difference]: With dead ends: 224 [2023-11-12 02:27:36,014 INFO L226 Difference]: Without dead ends: 224 [2023-11-12 02:27:36,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=104, Unknown=1, NotChecked=20, Total=156 [2023-11-12 02:27:36,018 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 137 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 250 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:36,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 623 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 574 Invalid, 0 Unknown, 250 Unchecked, 1.2s Time] [2023-11-12 02:27:36,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-12 02:27:36,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 148. [2023-11-12 02:27:36,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 103 states have (on average 1.6601941747572815) internal successors, (171), 130 states have internal predecessors, (171), 12 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (20), 15 states have call predecessors, (20), 12 states have call successors, (20) [2023-11-12 02:27:36,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 203 transitions. [2023-11-12 02:27:36,049 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 203 transitions. Word has length 17 [2023-11-12 02:27:36,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:36,050 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 203 transitions. [2023-11-12 02:27:36,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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) [2023-11-12 02:27:36,050 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 203 transitions. [2023-11-12 02:27:36,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 02:27:36,052 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:36,052 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:36,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:36,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:27:36,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:27:36,461 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-12 02:27:36,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:36,462 INFO L85 PathProgramCache]: Analyzing trace with hash -2086429614, now seen corresponding path program 1 times [2023-11-12 02:27:36,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:27:36,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732703873] [2023-11-12 02:27:36,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:36,463 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 [2023-11-12 02:27:36,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:27:36,464 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:27:36,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:27:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:36,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:27:36,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:36,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:27:36,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:27:36,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:27:36,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732703873] [2023-11-12 02:27:36,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732703873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:36,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:36,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:27:36,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322620766] [2023-11-12 02:27:36,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:36,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:27:36,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:27:36,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:27:36,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:27:36,603 INFO L87 Difference]: Start difference. First operand 148 states and 203 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-12 02:27:36,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:36,645 INFO L93 Difference]: Finished difference Result 130 states and 170 transitions. [2023-11-12 02:27:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:27:36,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 17 [2023-11-12 02:27:36,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:36,647 INFO L225 Difference]: With dead ends: 130 [2023-11-12 02:27:36,648 INFO L226 Difference]: Without dead ends: 128 [2023-11-12 02:27:36,648 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 [2023-11-12 02:27:36,649 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 376 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 [2023-11-12 02:27:36,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 376 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:27:36,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-12 02:27:36,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2023-11-12 02:27:36,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 88 states have (on average 1.6590909090909092) internal successors, (146), 114 states have internal predecessors, (146), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2023-11-12 02:27:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 168 transitions. [2023-11-12 02:27:36,658 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 168 transitions. Word has length 17 [2023-11-12 02:27:36,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:36,659 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 168 transitions. [2023-11-12 02:27:36,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-12 02:27:36,659 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 168 transitions. [2023-11-12 02:27:36,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 02:27:36,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:36,660 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:36,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:36,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:27:36,872 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-12 02:27:36,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:36,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1138254343, now seen corresponding path program 1 times [2023-11-12 02:27:36,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:27:36,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449577249] [2023-11-12 02:27:36,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:36,873 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 [2023-11-12 02:27:36,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:27:36,874 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:27:36,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:27:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:36,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:27:36,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:37,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:27:37,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:27:37,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:27:37,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449577249] [2023-11-12 02:27:37,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449577249] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:27:37,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:27:37,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2023-11-12 02:27:37,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564534593] [2023-11-12 02:27:37,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:37,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:27:37,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:27:37,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:27:37,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:27:37,288 INFO L87 Difference]: Start difference. First operand 128 states and 168 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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) [2023-11-12 02:27:37,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:37,618 INFO L93 Difference]: Finished difference Result 131 states and 170 transitions. [2023-11-12 02:27:37,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:27:37,619 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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 18 [2023-11-12 02:27:37,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:37,620 INFO L225 Difference]: With dead ends: 131 [2023-11-12 02:27:37,620 INFO L226 Difference]: Without dead ends: 129 [2023-11-12 02:27:37,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:27:37,621 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 205 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:37,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 278 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:27:37,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-12 02:27:37,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-11-12 02:27:37,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 90 states have (on average 1.6222222222222222) internal successors, (146), 114 states have internal predecessors, (146), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2023-11-12 02:27:37,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 168 transitions. [2023-11-12 02:27:37,630 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 168 transitions. Word has length 18 [2023-11-12 02:27:37,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:37,630 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 168 transitions. [2023-11-12 02:27:37,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 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) [2023-11-12 02:27:37,631 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 168 transitions. [2023-11-12 02:27:37,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-12 02:27:37,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:37,632 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:37,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:27:37,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:27:37,844 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-12 02:27:37,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:37,844 INFO L85 PathProgramCache]: Analyzing trace with hash 968466533, now seen corresponding path program 1 times [2023-11-12 02:27:37,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:27:37,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319019388] [2023-11-12 02:27:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:37,845 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 [2023-11-12 02:27:37,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:27:37,846 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:27:37,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:27:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:37,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:27:37,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:38,065 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_entry_point_~c11~0#1.base| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~c11~0#1.base|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~c11~0#1.base| (_ bv0 1))))) is different from true [2023-11-12 02:27:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:27:38,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:38,166 INFO L322 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2023-11-12 02:27:38,167 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 38 [2023-11-12 02:27:40,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:27:40,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319019388] [2023-11-12 02:27:40,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319019388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:40,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [153911405] [2023-11-12 02:27:40,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:40,350 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 02:27:40,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 [2023-11-12 02:27:40,353 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 02:27:40,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-11-12 02:27:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:40,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:27:40,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:40,721 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_~c11~0#1.base| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~c11~0#1.base|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~c11~0#1.base| (_ bv0 1)))))) is different from true [2023-11-12 02:27:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:27:40,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:40,823 INFO L322 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2023-11-12 02:27:40,823 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 38 [2023-11-12 02:27:44,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [153911405] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:44,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:27:44,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-12 02:27:44,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166935439] [2023-11-12 02:27:44,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:44,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:27:44,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:27:44,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:27:44,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=106, Unknown=3, NotChecked=42, Total=182 [2023-11-12 02:27:44,980 INFO L87 Difference]: Start difference. First operand 129 states and 168 transitions. Second operand has 13 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-12 02:27:46,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:46,082 INFO L93 Difference]: Finished difference Result 189 states and 236 transitions. [2023-11-12 02:27:46,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:27:46,083 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2023-11-12 02:27:46,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:46,085 INFO L225 Difference]: With dead ends: 189 [2023-11-12 02:27:46,085 INFO L226 Difference]: Without dead ends: 184 [2023-11-12 02:27:46,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=65, Invalid=246, Unknown=3, NotChecked=66, Total=380 [2023-11-12 02:27:46,086 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 198 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 336 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:46,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 634 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 539 Invalid, 0 Unknown, 336 Unchecked, 0.9s Time] [2023-11-12 02:27:46,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-12 02:27:46,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 124. [2023-11-12 02:27:46,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 85 states have (on average 1.6470588235294117) internal successors, (140), 110 states have internal predecessors, (140), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2023-11-12 02:27:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 162 transitions. [2023-11-12 02:27:46,095 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 162 transitions. Word has length 21 [2023-11-12 02:27:46,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:46,095 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 162 transitions. [2023-11-12 02:27:46,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-12 02:27:46,096 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 162 transitions. [2023-11-12 02:27:46,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-12 02:27:46,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:46,097 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:46,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:27:46,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:46,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt [2023-11-12 02:27:46,509 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-12 02:27:46,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:46,509 INFO L85 PathProgramCache]: Analyzing trace with hash -406257806, now seen corresponding path program 1 times [2023-11-12 02:27:46,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:27:46,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149300431] [2023-11-12 02:27:46,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:46,510 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 [2023-11-12 02:27:46,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:27:46,511 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:27:46,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:27:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:46,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:27:46,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:46,619 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 02:27:46,696 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2023-11-12 02:27:46,717 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:27:46,717 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-12 02:27:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2023-11-12 02:27:46,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:27:46,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:27:46,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149300431] [2023-11-12 02:27:46,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149300431] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:27:46,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:27:46,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2023-11-12 02:27:46,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331839631] [2023-11-12 02:27:46,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:46,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:27:46,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:27:46,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:27:46,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2023-11-12 02:27:46,894 INFO L87 Difference]: Start difference. First operand 124 states and 162 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-12 02:27:47,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:47,318 INFO L93 Difference]: Finished difference Result 174 states and 227 transitions. [2023-11-12 02:27:47,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:27:47,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2023-11-12 02:27:47,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:47,321 INFO L225 Difference]: With dead ends: 174 [2023-11-12 02:27:47,321 INFO L226 Difference]: Without dead ends: 174 [2023-11-12 02:27:47,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2023-11-12 02:27:47,322 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 62 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:47,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 274 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 227 Invalid, 0 Unknown, 132 Unchecked, 0.4s Time] [2023-11-12 02:27:47,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-12 02:27:47,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 137. [2023-11-12 02:27:47,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 97 states have (on average 1.6288659793814433) internal successors, (158), 120 states have internal predecessors, (158), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (15), 13 states have call predecessors, (15), 10 states have call successors, (15) [2023-11-12 02:27:47,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 183 transitions. [2023-11-12 02:27:47,329 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 183 transitions. Word has length 25 [2023-11-12 02:27:47,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:47,329 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 183 transitions. [2023-11-12 02:27:47,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-12 02:27:47,330 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 183 transitions. [2023-11-12 02:27:47,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-12 02:27:47,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:47,331 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:47,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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)] Ended with exit code 0 [2023-11-12 02:27:47,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:27:47,542 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-12 02:27:47,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:47,542 INFO L85 PathProgramCache]: Analyzing trace with hash -406257805, now seen corresponding path program 1 times [2023-11-12 02:27:47,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:27:47,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964164460] [2023-11-12 02:27:47,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:47,543 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 [2023-11-12 02:27:47,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:27:47,544 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:27:47,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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 [2023-11-12 02:27:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:47,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 02:27:47,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:47,676 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:27:47,793 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| |c_ldv_malloc_#in~size|) |c_#length|)) is different from true [2023-11-12 02:27:47,819 INFO L322 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-12 02:27:47,819 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-12 02:27:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-11-12 02:27:47,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:48,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:27:48,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964164460] [2023-11-12 02:27:48,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964164460] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:48,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [154618653] [2023-11-12 02:27:48,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:48,125 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 02:27:48,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 [2023-11-12 02:27:48,133 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 02:27:48,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-11-12 02:27:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:48,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-12 02:27:48,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:48,335 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:27:48,342 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 02:27:48,562 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-11-12 02:27:48,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:27:48,589 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-12 02:27:48,605 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 02:27:48,606 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 02:27:48,620 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-11-12 02:27:48,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:48,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [154618653] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:48,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:27:48,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-12 02:27:48,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892566567] [2023-11-12 02:27:48,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:48,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 02:27:48,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:27:48,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 02:27:48,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=173, Unknown=2, NotChecked=54, Total=272 [2023-11-12 02:27:48,851 INFO L87 Difference]: Start difference. First operand 137 states and 183 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-12 02:27:50,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:50,066 INFO L93 Difference]: Finished difference Result 264 states and 342 transitions. [2023-11-12 02:27:50,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:27:50,067 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 25 [2023-11-12 02:27:50,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:50,069 INFO L225 Difference]: With dead ends: 264 [2023-11-12 02:27:50,069 INFO L226 Difference]: Without dead ends: 264 [2023-11-12 02:27:50,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=224, Unknown=2, NotChecked=62, Total=342 [2023-11-12 02:27:50,074 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 107 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 426 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:50,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 925 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 579 Invalid, 0 Unknown, 426 Unchecked, 1.1s Time] [2023-11-12 02:27:50,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-12 02:27:50,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 195. [2023-11-12 02:27:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 149 states have (on average 1.6442953020134228) internal successors, (245), 172 states have internal predecessors, (245), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (23), 19 states have call predecessors, (23), 16 states have call successors, (23) [2023-11-12 02:27:50,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 284 transitions. [2023-11-12 02:27:50,085 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 284 transitions. Word has length 25 [2023-11-12 02:27:50,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:50,085 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 284 transitions. [2023-11-12 02:27:50,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-12 02:27:50,086 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 284 transitions. [2023-11-12 02:27:50,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-12 02:27:50,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:50,087 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:50,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:50,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:50,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:27:50,493 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-12 02:27:50,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:50,493 INFO L85 PathProgramCache]: Analyzing trace with hash -911816431, now seen corresponding path program 1 times [2023-11-12 02:27:50,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:27:50,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641552518] [2023-11-12 02:27:50,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:50,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:27:50,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:27:50,497 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:27:50,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-12 02:27:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:50,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:27:50,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:50,645 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:27:50,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:27:50,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:27:50,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641552518] [2023-11-12 02:27:50,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641552518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:50,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:50,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:27:50,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442960959] [2023-11-12 02:27:50,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:50,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:27:50,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:27:50,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:27:50,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:27:50,648 INFO L87 Difference]: Start difference. First operand 195 states and 284 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:27:50,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:50,683 INFO L93 Difference]: Finished difference Result 126 states and 161 transitions. [2023-11-12 02:27:50,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:27:50,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 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 25 [2023-11-12 02:27:50,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:50,685 INFO L225 Difference]: With dead ends: 126 [2023-11-12 02:27:50,685 INFO L226 Difference]: Without dead ends: 124 [2023-11-12 02:27:50,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:27:50,686 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:50,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 349 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:27:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-12 02:27:50,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-11-12 02:27:50,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 88 states have (on average 1.5681818181818181) internal successors, (138), 110 states have internal predecessors, (138), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-12 02:27:50,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 159 transitions. [2023-11-12 02:27:50,692 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 159 transitions. Word has length 25 [2023-11-12 02:27:50,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:50,692 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 159 transitions. [2023-11-12 02:27:50,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:27:50,693 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 159 transitions. [2023-11-12 02:27:50,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-12 02:27:50,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:50,694 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:50,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:50,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:27:50,905 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-12 02:27:50,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:50,905 INFO L85 PathProgramCache]: Analyzing trace with hash 290909999, now seen corresponding path program 1 times [2023-11-12 02:27:50,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:27:50,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104698561] [2023-11-12 02:27:50,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:50,905 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 [2023-11-12 02:27:50,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:27:50,906 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:27:50,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-12 02:27:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:50,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:27:50,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:27:51,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:27:51,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:27:51,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104698561] [2023-11-12 02:27:51,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104698561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:51,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:51,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:27:51,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372983474] [2023-11-12 02:27:51,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:51,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:27:51,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:27:51,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:27:51,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:27:51,032 INFO L87 Difference]: Start difference. First operand 124 states and 159 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:27:51,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:51,082 INFO L93 Difference]: Finished difference Result 172 states and 207 transitions. [2023-11-12 02:27:51,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:27:51,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2023-11-12 02:27:51,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:51,084 INFO L225 Difference]: With dead ends: 172 [2023-11-12 02:27:51,084 INFO L226 Difference]: Without dead ends: 172 [2023-11-12 02:27:51,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:27:51,085 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 56 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:51,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 346 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:27:51,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-12 02:27:51,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 124. [2023-11-12 02:27:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 88 states have (on average 1.5568181818181819) internal successors, (137), 110 states have internal predecessors, (137), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-12 02:27:51,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 158 transitions. [2023-11-12 02:27:51,099 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 158 transitions. Word has length 26 [2023-11-12 02:27:51,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:51,099 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 158 transitions. [2023-11-12 02:27:51,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:27:51,100 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 158 transitions. [2023-11-12 02:27:51,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-12 02:27:51,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:51,103 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:51,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:51,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:27:51,315 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-12 02:27:51,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:51,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1178413680, now seen corresponding path program 1 times [2023-11-12 02:27:51,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:27:51,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192741688] [2023-11-12 02:27:51,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:51,316 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 [2023-11-12 02:27:51,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:27:51,317 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:27:51,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-12 02:27:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:51,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:27:51,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:27:51,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:51,997 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:27:51,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:27:51,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192741688] [2023-11-12 02:27:51,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192741688] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:27:51,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:27:51,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2023-11-12 02:27:51,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506161354] [2023-11-12 02:27:51,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:51,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:27:51,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:27:51,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:27:51,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:27:51,999 INFO L87 Difference]: Start difference. First operand 124 states and 158 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-12 02:27:52,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:52,400 INFO L93 Difference]: Finished difference Result 123 states and 155 transitions. [2023-11-12 02:27:52,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:27:52,401 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 26 [2023-11-12 02:27:52,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:52,402 INFO L225 Difference]: With dead ends: 123 [2023-11-12 02:27:52,403 INFO L226 Difference]: Without dead ends: 123 [2023-11-12 02:27:52,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:27:52,403 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 118 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:52,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 273 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:27:52,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-12 02:27:52,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-11-12 02:27:52,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 88 states have (on average 1.5227272727272727) internal successors, (134), 109 states have internal predecessors, (134), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-12 02:27:52,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 155 transitions. [2023-11-12 02:27:52,409 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 155 transitions. Word has length 26 [2023-11-12 02:27:52,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:52,410 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 155 transitions. [2023-11-12 02:27:52,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-12 02:27:52,410 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 155 transitions. [2023-11-12 02:27:52,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 02:27:52,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:52,411 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:52,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:52,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:27:52,629 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-12 02:27:52,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:52,629 INFO L85 PathProgramCache]: Analyzing trace with hash 428272563, now seen corresponding path program 1 times [2023-11-12 02:27:52,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:27:52,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173227467] [2023-11-12 02:27:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:52,630 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 [2023-11-12 02:27:52,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:27:52,632 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:27:52,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-12 02:27:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:52,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:27:52,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:52,742 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2023-11-12 02:27:52,760 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:27:52,760 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-12 02:27:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:27:52,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:27:52,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:27:52,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173227467] [2023-11-12 02:27:52,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173227467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:52,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:52,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:27:52,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331241421] [2023-11-12 02:27:52,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:52,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:27:52,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:27:52,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:27:52,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2023-11-12 02:27:52,788 INFO L87 Difference]: Start difference. First operand 123 states and 155 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:27:53,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:53,067 INFO L93 Difference]: Finished difference Result 157 states and 192 transitions. [2023-11-12 02:27:53,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:27:53,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2023-11-12 02:27:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:53,069 INFO L225 Difference]: With dead ends: 157 [2023-11-12 02:27:53,069 INFO L226 Difference]: Without dead ends: 157 [2023-11-12 02:27:53,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2023-11-12 02:27:53,070 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 70 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:53,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 259 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 151 Invalid, 0 Unknown, 146 Unchecked, 0.3s Time] [2023-11-12 02:27:53,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-12 02:27:53,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 122. [2023-11-12 02:27:53,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 88 states have (on average 1.5) internal successors, (132), 108 states have internal predecessors, (132), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-12 02:27:53,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 153 transitions. [2023-11-12 02:27:53,077 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 153 transitions. Word has length 27 [2023-11-12 02:27:53,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:53,077 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 153 transitions. [2023-11-12 02:27:53,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:27:53,078 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 153 transitions. [2023-11-12 02:27:53,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 02:27:53,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:53,079 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:53,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-12 02:27:53,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:27:53,291 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-12 02:27:53,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:53,291 INFO L85 PathProgramCache]: Analyzing trace with hash 428272564, now seen corresponding path program 1 times [2023-11-12 02:27:53,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:27:53,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531713193] [2023-11-12 02:27:53,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:53,292 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 [2023-11-12 02:27:53,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:27:53,294 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:27:53,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-12 02:27:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:53,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-12 02:27:53,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:53,434 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:27:53,446 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 02:27:53,585 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-11-12 02:27:53,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:27:53,611 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-12 02:27:53,631 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 02:27:53,631 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 02:27:53,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:27:53,723 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-12 02:27:53,738 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 02:27:53,739 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 02:27:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 4 not checked. [2023-11-12 02:27:53,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:56,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:27:56,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531713193] [2023-11-12 02:27:56,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531713193] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:56,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1092758696] [2023-11-12 02:27:56,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:56,267 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 02:27:56,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 [2023-11-12 02:27:56,268 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 02:27:56,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-11-12 02:27:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:56,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-12 02:27:56,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:56,482 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 02:27:56,491 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 02:27:56,649 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-12 02:27:56,649 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-12 02:27:56,670 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 02:27:56,670 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 02:27:56,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:27:56,805 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-12 02:27:56,822 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 02:27:56,822 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 02:27:56,852 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2023-11-12 02:27:56,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:57,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1092758696] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:57,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:27:57,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 11 [2023-11-12 02:27:57,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186056087] [2023-11-12 02:27:57,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:27:57,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 02:27:57,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:27:57,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:27:57,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=150, Unknown=2, NotChecked=24, Total=210 [2023-11-12 02:27:57,194 INFO L87 Difference]: Start difference. First operand 122 states and 153 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-12 02:27:58,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:58,414 INFO L93 Difference]: Finished difference Result 191 states and 212 transitions. [2023-11-12 02:27:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:27:58,415 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2023-11-12 02:27:58,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:58,416 INFO L225 Difference]: With dead ends: 191 [2023-11-12 02:27:58,416 INFO L226 Difference]: Without dead ends: 191 [2023-11-12 02:27:58,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=58, Invalid=250, Unknown=2, NotChecked=32, Total=342 [2023-11-12 02:27:58,417 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 143 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 208 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:58,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 758 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 596 Invalid, 0 Unknown, 208 Unchecked, 1.0s Time] [2023-11-12 02:27:58,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-12 02:27:58,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 121. [2023-11-12 02:27:58,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 88 states have (on average 1.4772727272727273) internal successors, (130), 107 states have internal predecessors, (130), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-12 02:27:58,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 151 transitions. [2023-11-12 02:27:58,424 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 151 transitions. Word has length 27 [2023-11-12 02:27:58,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:58,425 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 151 transitions. [2023-11-12 02:27:58,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-12 02:27:58,425 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 151 transitions. [2023-11-12 02:27:58,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-12 02:27:58,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:58,426 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:27:58,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:58,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2023-11-12 02:27:58,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt [2023-11-12 02:27:58,848 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-11-12 02:27:58,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:58,849 INFO L85 PathProgramCache]: Analyzing trace with hash -746927052, now seen corresponding path program 1 times [2023-11-12 02:27:58,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:27:58,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925435743] [2023-11-12 02:27:58,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:58,849 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 [2023-11-12 02:27:58,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:27:58,850 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -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) [2023-11-12 02:27:58,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-12 02:27:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:58,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-12 02:27:58,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:59,025 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-12 02:27:59,051 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 02:27:59,229 INFO L322 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2023-11-12 02:27:59,230 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 44 [2023-11-12 02:27:59,370 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 02:27:59,371 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 46 [2023-11-12 02:27:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:27:59,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:27:59,709 INFO L322 Elim1Store]: treesize reduction 7, result has 68.2 percent of original size [2023-11-12 02:27:59,710 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 68 [2023-11-12 02:27:59,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:27:59,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925435743] [2023-11-12 02:27:59,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925435743] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:27:59,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [762266235] [2023-11-12 02:27:59,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:59,787 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-12 02:27:59,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 [2023-11-12 02:27:59,789 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-12 02:27:59,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-11-12 02:27:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:59,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-12 02:27:59,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:27:59,964 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 02:28:00,231 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 02:28:00,231 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 02:28:00,362 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-12 02:28:02,436 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_18| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_18| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~c11~0#1.base_BEFORE_CALL_18|) (_ bv0 32))))) is different from true [2023-11-12 02:28:02,585 INFO L322 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-12 02:28:02,586 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-12 02:28:02,719 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-12 02:28:02,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2023-11-12 02:28:02,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:28:02,754 INFO L322 Elim1Store]: treesize reduction 7, result has 58.8 percent of original size [2023-11-12 02:28:02,754 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2023-11-12 02:28:02,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [762266235] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:28:02,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:28:02,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2023-11-12 02:28:02,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254898440] [2023-11-12 02:28:02,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:28:02,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-12 02:28:02,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:28:02,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-12 02:28:02,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=824, Unknown=13, NotChecked=58, Total=992 [2023-11-12 02:28:02,867 INFO L87 Difference]: Start difference. First operand 121 states and 151 transitions. Second operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 21 states have internal predecessors, (37), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-12 02:28:12,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:28:12,760 INFO L93 Difference]: Finished difference Result 178 states and 213 transitions. [2023-11-12 02:28:12,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-12 02:28:12,760 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 21 states have internal predecessors, (37), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2023-11-12 02:28:12,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:28:12,762 INFO L225 Difference]: With dead ends: 178 [2023-11-12 02:28:12,762 INFO L226 Difference]: Without dead ends: 178 [2023-11-12 02:28:12,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=389, Invalid=2250, Unknown=17, NotChecked=100, Total=2756 [2023-11-12 02:28:12,765 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 299 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:28:12,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1324 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1294 Invalid, 0 Unknown, 163 Unchecked, 2.4s Time] [2023-11-12 02:28:12,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-12 02:28:12,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 93. [2023-11-12 02:28:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.359375) internal successors, (87), 81 states have internal predecessors, (87), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-12 02:28:12,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2023-11-12 02:28:12,772 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 29 [2023-11-12 02:28:12,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:28:12,772 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2023-11-12 02:28:12,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 21 states have internal predecessors, (37), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-12 02:28:12,773 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2023-11-12 02:28:12,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-12 02:28:12,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:28:12,774 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:28:12,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2023-11-12 02:28:12,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c9f5a2c-bab4-4827-93a1-702c6c4b799e/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0