./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu --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 b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:49,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:49,494 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:57:49,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:49,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:49,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:49,545 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:49,546 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:49,547 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:49,552 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:49,553 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:49,554 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:49,554 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:49,556 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:49,556 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:49,557 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:49,557 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:49,558 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:49,558 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:57:49,559 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:57:49,559 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:57:49,560 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:49,560 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:57:49,560 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:57:49,561 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:49,561 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:49,562 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:49,563 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:49,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:49,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:49,565 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:49,565 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:49,566 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:57:49,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:57:49,566 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:49,566 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:49,567 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:49,567 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:49,567 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_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 [2023-11-19 07:57:49,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:49,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:49,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:49,880 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:49,881 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:49,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2023-11-19 07:57:53,080 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:53,386 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:53,387 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2023-11-19 07:57:53,415 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/data/c0140ecf3/adf149aa8ae84ecbb7d92ce941e82dc8/FLAG897792214 [2023-11-19 07:57:53,434 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/data/c0140ecf3/adf149aa8ae84ecbb7d92ce941e82dc8 [2023-11-19 07:57:53,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:53,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:53,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:53,444 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:53,451 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:53,452 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:53" (1/1) ... [2023-11-19 07:57:53,453 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49abc78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:53, skipping insertion in model container [2023-11-19 07:57:53,454 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:53" (1/1) ... [2023-11-19 07:57:53,511 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:54,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:54,031 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) [2023-11-19 07:57:54,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5a82cfc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:54, skipping insertion in model container [2023-11-19 07:57:54,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:54,032 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:57:54,034 INFO L158 Benchmark]: Toolchain (without parser) took 594.71ms. Allocated memory is still 153.1MB. Free memory was 104.4MB in the beginning and 89.3MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:57:54,034 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 153.1MB. Free memory is still 99.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:57:54,035 INFO L158 Benchmark]: CACSL2BoogieTranslator took 591.48ms. Allocated memory is still 153.1MB. Free memory was 104.0MB in the beginning and 89.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:57:54,037 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 153.1MB. Free memory is still 99.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 591.48ms. Allocated memory is still 153.1MB. Free memory was 104.0MB in the beginning and 89.3MB in the end (delta: 14.7MB). 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_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu --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 b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:56,583 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:56,698 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:57:56,709 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:56,710 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:56,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:56,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:56,763 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:56,765 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:56,770 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:56,771 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:56,772 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:56,772 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:56,774 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:56,775 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:56,775 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:56,776 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:56,776 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:56,777 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:57:56,777 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:57:56,778 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:57:56,778 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:56,779 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:57:56,779 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:57:56,780 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:57:56,780 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:57:56,781 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:56,781 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:56,782 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:56,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:56,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:56,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:56,785 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:56,785 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:56,786 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:57:56,786 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:57:56,786 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:56,787 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:56,787 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:56,788 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:57:56,788 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:56,789 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_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b04cfdc033f25419ae30b8c067b1e8de34cd963e91f12bceeafd05a3d125e0b7 [2023-11-19 07:57:57,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:57,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:57,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:57,270 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:57,271 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:57,272 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2023-11-19 07:58:00,389 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:58:00,806 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:58:00,810 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/sv-benchmarks/c/ldv-memsafety/memleaks_test23_3.i [2023-11-19 07:58:00,843 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/data/a075d5d2e/d207a1eea0174dd0877a94d018dcf910/FLAGe3028f6c0 [2023-11-19 07:58:00,864 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/data/a075d5d2e/d207a1eea0174dd0877a94d018dcf910 [2023-11-19 07:58:00,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:58:00,872 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:58:00,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:00,876 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:58:00,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:58:00,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:00" (1/1) ... [2023-11-19 07:58:00,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9816353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:00, skipping insertion in model container [2023-11-19 07:58:00,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:00" (1/1) ... [2023-11-19 07:58:00,956 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:58:01,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:01,674 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:58:01,690 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:58:01,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:01,835 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:58:01,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:01,996 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:02,006 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:58:02,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:02 WrapperNode [2023-11-19 07:58:02,007 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:02,008 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:02,008 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:58:02,008 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:58:02,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:02" (1/1) ... [2023-11-19 07:58:02,066 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:02" (1/1) ... [2023-11-19 07:58:02,120 INFO L138 Inliner]: procedures = 174, calls = 117, calls flagged for inlining = 29, calls inlined = 14, statements flattened = 191 [2023-11-19 07:58:02,121 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:02,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:58:02,123 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:58:02,123 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:58:02,134 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:02" (1/1) ... [2023-11-19 07:58:02,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:02" (1/1) ... [2023-11-19 07:58:02,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:02" (1/1) ... [2023-11-19 07:58:02,160 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:02" (1/1) ... [2023-11-19 07:58:02,187 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:02" (1/1) ... [2023-11-19 07:58:02,191 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:02" (1/1) ... [2023-11-19 07:58:02,194 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:02" (1/1) ... [2023-11-19 07:58:02,197 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:02" (1/1) ... [2023-11-19 07:58:02,213 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:58:02,214 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:58:02,215 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:58:02,215 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:58:02,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:02" (1/1) ... [2023-11-19 07:58:02,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:02,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:02,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:02,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:58:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:58:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-11-19 07:58:02,299 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-11-19 07:58:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-11-19 07:58:02,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-11-19 07:58:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 07:58:02,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 07:58:02,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:58:02,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:58:02,300 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2023-11-19 07:58:02,300 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2023-11-19 07:58:02,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:58:02,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:58:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:58:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:58:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:58:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:58:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-11-19 07:58:02,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-11-19 07:58:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 07:58:02,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 07:58:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:58:02,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:58:02,496 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:58:02,498 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:58:03,323 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:58:03,339 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:58:03,339 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:58:03,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:03 BoogieIcfgContainer [2023-11-19 07:58:03,349 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:58:03,353 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:58:03,354 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:58:03,357 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:58:03,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:58:00" (1/3) ... [2023-11-19 07:58:03,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f13ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:03, skipping insertion in model container [2023-11-19 07:58:03,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:02" (2/3) ... [2023-11-19 07:58:03,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f13ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:03, skipping insertion in model container [2023-11-19 07:58:03,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:03" (3/3) ... [2023-11-19 07:58:03,363 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test23_3.i [2023-11-19 07:58:03,384 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:58:03,384 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2023-11-19 07:58:03,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:03,464 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;@6dcfa803, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:03,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2023-11-19 07:58:03,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 200 states, 109 states have (on average 1.834862385321101) internal successors, (200), 185 states have internal predecessors, (200), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 07:58:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 07:58:03,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:03,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:03,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:03,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:03,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1449281016, now seen corresponding path program 1 times [2023-11-19 07:58:03,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:03,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344842968] [2023-11-19 07:58:03,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:03,529 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 [2023-11-19 07:58:03,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:03,533 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:03,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:03,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:58:03,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:03,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:58:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:03,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:03,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:03,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344842968] [2023-11-19 07:58:03,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344842968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:03,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:03,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:58:03,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445938272] [2023-11-19 07:58:03,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:03,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:58:03,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:03,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:58:03,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:58:03,894 INFO L87 Difference]: Start difference. First operand has 200 states, 109 states have (on average 1.834862385321101) internal successors, (200), 185 states have internal predecessors, (200), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:58:04,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:04,995 INFO L93 Difference]: Finished difference Result 217 states and 233 transitions. [2023-11-19 07:58:04,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:58:04,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-19 07:58:04,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:05,011 INFO L225 Difference]: With dead ends: 217 [2023-11-19 07:58:05,011 INFO L226 Difference]: Without dead ends: 215 [2023-11-19 07:58:05,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:58:05,017 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 18 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:05,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 826 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 07:58:05,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-19 07:58:05,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 207. [2023-11-19 07:58:05,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 115 states have (on average 1.7826086956521738) internal successors, (205), 190 states have internal predecessors, (205), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-19 07:58:05,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 224 transitions. [2023-11-19 07:58:05,082 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 224 transitions. Word has length 12 [2023-11-19 07:58:05,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:05,083 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 224 transitions. [2023-11-19 07:58:05,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:58:05,083 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 224 transitions. [2023-11-19 07:58:05,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 07:58:05,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:05,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:05,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:05,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:05,290 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:05,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:05,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1449281017, now seen corresponding path program 1 times [2023-11-19 07:58:05,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:05,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973215730] [2023-11-19 07:58:05,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:05,292 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 [2023-11-19 07:58:05,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:05,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:05,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:05,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:58:05,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:05,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:58:05,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:05,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:05,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:05,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973215730] [2023-11-19 07:58:05,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973215730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:05,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:05,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:58:05,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596335418] [2023-11-19 07:58:05,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:05,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:58:05,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:05,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:58:05,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:58:05,625 INFO L87 Difference]: Start difference. First operand 207 states and 224 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:58:06,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:06,747 INFO L93 Difference]: Finished difference Result 212 states and 227 transitions. [2023-11-19 07:58:06,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:58:06,749 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-19 07:58:06,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:06,752 INFO L225 Difference]: With dead ends: 212 [2023-11-19 07:58:06,752 INFO L226 Difference]: Without dead ends: 212 [2023-11-19 07:58:06,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:58:06,754 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 15 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:06,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1081 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 07:58:06,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-19 07:58:06,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 207. [2023-11-19 07:58:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 115 states have (on average 1.7652173913043478) internal successors, (203), 190 states have internal predecessors, (203), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-11-19 07:58:06,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 222 transitions. [2023-11-19 07:58:06,793 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 222 transitions. Word has length 12 [2023-11-19 07:58:06,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:06,794 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 222 transitions. [2023-11-19 07:58:06,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:58:06,794 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 222 transitions. [2023-11-19 07:58:06,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 07:58:06,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:06,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:06,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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)] Ended with exit code 0 [2023-11-19 07:58:07,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:07,001 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:07,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:07,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1102875945, now seen corresponding path program 1 times [2023-11-19 07:58:07,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:07,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590848254] [2023-11-19 07:58:07,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:07,010 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 [2023-11-19 07:58:07,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:07,011 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:07,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:07,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:58:07,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:07,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:07,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:07,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590848254] [2023-11-19 07:58:07,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590848254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:07,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:07,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:07,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855295200] [2023-11-19 07:58:07,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:07,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:58:07,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:07,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:58:07,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:07,200 INFO L87 Difference]: Start difference. First operand 207 states and 222 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:58:07,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:07,248 INFO L93 Difference]: Finished difference Result 199 states and 213 transitions. [2023-11-19 07:58:07,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:07,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-19 07:58:07,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:07,255 INFO L225 Difference]: With dead ends: 199 [2023-11-19 07:58:07,256 INFO L226 Difference]: Without dead ends: 199 [2023-11-19 07:58:07,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:07,263 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 0 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:07,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 821 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:58:07,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-19 07:58:07,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2023-11-19 07:58:07,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 111 states have (on average 1.7567567567567568) internal successors, (195), 182 states have internal predecessors, (195), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-19 07:58:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 212 transitions. [2023-11-19 07:58:07,280 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 212 transitions. Word has length 12 [2023-11-19 07:58:07,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:07,280 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 212 transitions. [2023-11-19 07:58:07,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:58:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 212 transitions. [2023-11-19 07:58:07,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 07:58:07,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:07,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:07,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:07,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:07,484 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:07,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:07,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1449195576, now seen corresponding path program 1 times [2023-11-19 07:58:07,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:07,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134264749] [2023-11-19 07:58:07,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:07,486 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 [2023-11-19 07:58:07,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:07,487 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:07,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:07,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:58:07,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:07,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:07,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:07,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134264749] [2023-11-19 07:58:07,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134264749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:07,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:07,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:07,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930224427] [2023-11-19 07:58:07,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:07,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:58:07,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:07,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:58:07,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:07,615 INFO L87 Difference]: Start difference. First operand 198 states and 212 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:58:07,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:07,670 INFO L93 Difference]: Finished difference Result 199 states and 212 transitions. [2023-11-19 07:58:07,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:07,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-19 07:58:07,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:07,672 INFO L225 Difference]: With dead ends: 199 [2023-11-19 07:58:07,672 INFO L226 Difference]: Without dead ends: 199 [2023-11-19 07:58:07,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:07,676 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 104 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:07,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 696 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:58:07,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-19 07:58:07,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2023-11-19 07:58:07,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 111 states have (on average 1.7477477477477477) internal successors, (194), 182 states have internal predecessors, (194), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-19 07:58:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 211 transitions. [2023-11-19 07:58:07,697 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 211 transitions. Word has length 12 [2023-11-19 07:58:07,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:07,697 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 211 transitions. [2023-11-19 07:58:07,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:58:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 211 transitions. [2023-11-19 07:58:07,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 07:58:07,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:07,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:07,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:07,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:07,911 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:07,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:07,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1102961385, now seen corresponding path program 1 times [2023-11-19 07:58:07,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:07,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359683339] [2023-11-19 07:58:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:07,913 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 [2023-11-19 07:58:07,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:07,914 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:07,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:07,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:58:07,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:08,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:08,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:08,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359683339] [2023-11-19 07:58:08,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359683339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:08,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:08,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:08,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711404801] [2023-11-19 07:58:08,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:08,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:58:08,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:08,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:58:08,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:08,047 INFO L87 Difference]: Start difference. First operand 198 states and 211 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:58:08,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:08,099 INFO L93 Difference]: Finished difference Result 203 states and 215 transitions. [2023-11-19 07:58:08,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:58:08,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-19 07:58:08,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:08,114 INFO L225 Difference]: With dead ends: 203 [2023-11-19 07:58:08,115 INFO L226 Difference]: Without dead ends: 203 [2023-11-19 07:58:08,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:58:08,116 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 101 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:08,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 708 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:58:08,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-11-19 07:58:08,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 200. [2023-11-19 07:58:08,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 113 states have (on average 1.7345132743362832) internal successors, (196), 184 states have internal predecessors, (196), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-19 07:58:08,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 213 transitions. [2023-11-19 07:58:08,137 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 213 transitions. Word has length 12 [2023-11-19 07:58:08,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:08,138 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 213 transitions. [2023-11-19 07:58:08,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:58:08,139 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 213 transitions. [2023-11-19 07:58:08,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 07:58:08,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:08,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:08,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:08,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:08,343 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:08,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:08,344 INFO L85 PathProgramCache]: Analyzing trace with hash 167955544, now seen corresponding path program 1 times [2023-11-19 07:58:08,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:08,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472301039] [2023-11-19 07:58:08,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:08,344 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 [2023-11-19 07:58:08,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:08,346 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:08,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-19 07:58:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:08,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:58:08,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:08,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:08,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:08,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472301039] [2023-11-19 07:58:08,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1472301039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:08,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:08,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:08,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943184354] [2023-11-19 07:58:08,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:08,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:08,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:08,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:08,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:08,463 INFO L87 Difference]: Start difference. First operand 200 states and 213 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:58:08,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:08,973 INFO L93 Difference]: Finished difference Result 212 states and 227 transitions. [2023-11-19 07:58:08,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:08,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-19 07:58:08,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:08,975 INFO L225 Difference]: With dead ends: 212 [2023-11-19 07:58:08,975 INFO L226 Difference]: Without dead ends: 204 [2023-11-19 07:58:08,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:08,976 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 51 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:08,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 374 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:58:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-19 07:58:08,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 194. [2023-11-19 07:58:08,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 108 states have (on average 1.7592592592592593) internal successors, (190), 179 states have internal predecessors, (190), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 07:58:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 206 transitions. [2023-11-19 07:58:08,985 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 206 transitions. Word has length 13 [2023-11-19 07:58:08,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:08,985 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 206 transitions. [2023-11-19 07:58:08,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:58:08,985 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 206 transitions. [2023-11-19 07:58:08,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 07:58:08,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:08,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:08,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:09,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:09,187 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:09,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:09,188 INFO L85 PathProgramCache]: Analyzing trace with hash 794981539, now seen corresponding path program 1 times [2023-11-19 07:58:09,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:09,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117064135] [2023-11-19 07:58:09,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:09,188 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 [2023-11-19 07:58:09,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:09,189 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:09,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:09,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:58:09,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:09,424 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 [2023-11-19 07:58:09,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:58:09,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-19 07:58:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:09,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:09,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:09,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117064135] [2023-11-19 07:58:09,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117064135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:09,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:09,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:58:09,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351529300] [2023-11-19 07:58:09,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:09,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:58:09,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:09,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:58:09,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2023-11-19 07:58:09,557 INFO L87 Difference]: Start difference. First operand 194 states and 206 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:58:10,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:10,688 INFO L93 Difference]: Finished difference Result 245 states and 260 transitions. [2023-11-19 07:58:10,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:58:10,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-11-19 07:58:10,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:10,691 INFO L225 Difference]: With dead ends: 245 [2023-11-19 07:58:10,691 INFO L226 Difference]: Without dead ends: 245 [2023-11-19 07:58:10,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=76, Unknown=1, NotChecked=18, Total=132 [2023-11-19 07:58:10,692 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 467 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 258 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:10,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 209 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 416 Invalid, 0 Unknown, 258 Unchecked, 1.0s Time] [2023-11-19 07:58:10,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-11-19 07:58:10,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 203. [2023-11-19 07:58:10,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 117 states have (on average 1.735042735042735) internal successors, (203), 187 states have internal predecessors, (203), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-19 07:58:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 221 transitions. [2023-11-19 07:58:10,702 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 221 transitions. Word has length 16 [2023-11-19 07:58:10,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:10,703 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 221 transitions. [2023-11-19 07:58:10,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:58:10,703 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 221 transitions. [2023-11-19 07:58:10,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 07:58:10,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:10,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:10,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:10,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:10,909 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:10,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:10,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1764693148, now seen corresponding path program 1 times [2023-11-19 07:58:10,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:10,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059405806] [2023-11-19 07:58:10,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:10,910 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 [2023-11-19 07:58:10,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:10,911 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:10,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:11,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:58:11,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:11,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:58:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:11,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:11,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:11,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059405806] [2023-11-19 07:58:11,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059405806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:11,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:11,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:11,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492670293] [2023-11-19 07:58:11,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:11,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:11,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:11,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:11,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:11,090 INFO L87 Difference]: Start difference. First operand 203 states and 221 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:58:11,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:11,903 INFO L93 Difference]: Finished difference Result 254 states and 280 transitions. [2023-11-19 07:58:11,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:58:11,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-11-19 07:58:11,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:11,906 INFO L225 Difference]: With dead ends: 254 [2023-11-19 07:58:11,907 INFO L226 Difference]: Without dead ends: 254 [2023-11-19 07:58:11,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:58:11,908 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 66 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:11,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 630 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:58:11,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-19 07:58:11,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 229. [2023-11-19 07:58:11,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 145 states have (on average 1.7517241379310344) internal successors, (254), 213 states have internal predecessors, (254), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-19 07:58:11,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 272 transitions. [2023-11-19 07:58:11,918 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 272 transitions. Word has length 25 [2023-11-19 07:58:11,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:11,919 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 272 transitions. [2023-11-19 07:58:11,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:58:11,920 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 272 transitions. [2023-11-19 07:58:11,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 07:58:11,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:11,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:11,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-19 07:58:12,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:12,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:12,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:12,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1764693147, now seen corresponding path program 1 times [2023-11-19 07:58:12,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:12,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771432462] [2023-11-19 07:58:12,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:12,128 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 [2023-11-19 07:58:12,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:12,129 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:12,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:12,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:58:12,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:12,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:58:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:12,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:12,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:12,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771432462] [2023-11-19 07:58:12,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771432462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:12,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:12,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:12,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19691869] [2023-11-19 07:58:12,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:12,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:12,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:12,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:12,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:12,386 INFO L87 Difference]: Start difference. First operand 229 states and 272 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:58:13,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:13,437 INFO L93 Difference]: Finished difference Result 258 states and 284 transitions. [2023-11-19 07:58:13,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:58:13,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-11-19 07:58:13,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:13,440 INFO L225 Difference]: With dead ends: 258 [2023-11-19 07:58:13,440 INFO L226 Difference]: Without dead ends: 258 [2023-11-19 07:58:13,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:58:13,441 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 71 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:13,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 637 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 07:58:13,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-11-19 07:58:13,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 231. [2023-11-19 07:58:13,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 148 states have (on average 1.7297297297297298) internal successors, (256), 214 states have internal predecessors, (256), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 07:58:13,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 277 transitions. [2023-11-19 07:58:13,452 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 277 transitions. Word has length 25 [2023-11-19 07:58:13,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:13,452 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 277 transitions. [2023-11-19 07:58:13,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:58:13,453 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 277 transitions. [2023-11-19 07:58:13,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:58:13,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:13,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:13,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:13,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:13,657 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:13,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:13,658 INFO L85 PathProgramCache]: Analyzing trace with hash 642033734, now seen corresponding path program 1 times [2023-11-19 07:58:13,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:13,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730049431] [2023-11-19 07:58:13,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:13,659 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 [2023-11-19 07:58:13,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:13,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:13,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-19 07:58:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:13,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:58:13,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:13,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:13,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:13,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730049431] [2023-11-19 07:58:13,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730049431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:13,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:13,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:58:13,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618719465] [2023-11-19 07:58:13,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:13,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:58:13,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:13,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:58:13,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:58:13,842 INFO L87 Difference]: Start difference. First operand 231 states and 277 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:58:13,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:13,979 INFO L93 Difference]: Finished difference Result 231 states and 276 transitions. [2023-11-19 07:58:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:58:13,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-11-19 07:58:13,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:13,982 INFO L225 Difference]: With dead ends: 231 [2023-11-19 07:58:13,982 INFO L226 Difference]: Without dead ends: 231 [2023-11-19 07:58:13,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:58:13,983 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 86 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:13,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 842 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:58:13,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-11-19 07:58:13,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2023-11-19 07:58:13,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 148 states have (on average 1.722972972972973) internal successors, (255), 214 states have internal predecessors, (255), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 07:58:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 276 transitions. [2023-11-19 07:58:13,998 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 276 transitions. Word has length 27 [2023-11-19 07:58:13,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:13,998 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 276 transitions. [2023-11-19 07:58:13,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:58:13,999 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 276 transitions. [2023-11-19 07:58:14,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 07:58:14,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:14,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:14,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:14,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:14,210 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:14,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:14,210 INFO L85 PathProgramCache]: Analyzing trace with hash -425468464, now seen corresponding path program 1 times [2023-11-19 07:58:14,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:14,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015503889] [2023-11-19 07:58:14,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:14,212 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 [2023-11-19 07:58:14,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:14,214 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:14,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:14,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:58:14,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:14,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:58:14,481 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 07:58:14,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-19 07:58:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:14,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:14,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:14,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015503889] [2023-11-19 07:58:14,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015503889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:14,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:14,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:58:14,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966899688] [2023-11-19 07:58:14,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:14,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:58:14,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:14,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:58:14,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:58:14,561 INFO L87 Difference]: Start difference. First operand 231 states and 276 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:58:15,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:15,742 INFO L93 Difference]: Finished difference Result 243 states and 285 transitions. [2023-11-19 07:58:15,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:58:15,743 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-11-19 07:58:15,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:15,745 INFO L225 Difference]: With dead ends: 243 [2023-11-19 07:58:15,745 INFO L226 Difference]: Without dead ends: 243 [2023-11-19 07:58:15,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:58:15,746 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 138 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:15,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 554 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 07:58:15,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-11-19 07:58:15,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 227. [2023-11-19 07:58:15,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 148 states have (on average 1.6689189189189189) internal successors, (247), 210 states have internal predecessors, (247), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 07:58:15,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 268 transitions. [2023-11-19 07:58:15,763 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 268 transitions. Word has length 33 [2023-11-19 07:58:15,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:15,766 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 268 transitions. [2023-11-19 07:58:15,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:58:15,766 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 268 transitions. [2023-11-19 07:58:15,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 07:58:15,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:15,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:15,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:15,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:15,973 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:15,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:15,973 INFO L85 PathProgramCache]: Analyzing trace with hash -425468463, now seen corresponding path program 1 times [2023-11-19 07:58:15,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:15,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155128987] [2023-11-19 07:58:15,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:15,974 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 [2023-11-19 07:58:15,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:15,975 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:15,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:16,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:58:16,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:16,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:58:16,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:58:16,293 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|) (_ bv0 1)) (= |c_#length| (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| (select |c_#length| |ldv_zalloc_#t~malloc13#1.base|))))) is different from true [2023-11-19 07:58:16,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:58:16,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-19 07:58:16,362 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 07:58:16,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-19 07:58:16,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:16,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:16,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:16,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155128987] [2023-11-19 07:58:16,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155128987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:16,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:16,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:58:16,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334246082] [2023-11-19 07:58:16,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:16,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:58:16,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:16,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:58:16,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2023-11-19 07:58:16,467 INFO L87 Difference]: Start difference. First operand 227 states and 268 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:58:17,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:17,585 INFO L93 Difference]: Finished difference Result 252 states and 278 transitions. [2023-11-19 07:58:17,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:58:17,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-11-19 07:58:17,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:17,588 INFO L225 Difference]: With dead ends: 252 [2023-11-19 07:58:17,588 INFO L226 Difference]: Without dead ends: 252 [2023-11-19 07:58:17,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=29, Unknown=1, NotChecked=10, Total=56 [2023-11-19 07:58:17,589 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 113 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 284 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:17,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 416 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 479 Invalid, 0 Unknown, 284 Unchecked, 1.1s Time] [2023-11-19 07:58:17,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-19 07:58:17,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 227. [2023-11-19 07:58:17,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 148 states have (on average 1.6418918918918919) internal successors, (243), 210 states have internal predecessors, (243), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 07:58:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 264 transitions. [2023-11-19 07:58:17,598 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 264 transitions. Word has length 33 [2023-11-19 07:58:17,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:17,598 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 264 transitions. [2023-11-19 07:58:17,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:58:17,598 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 264 transitions. [2023-11-19 07:58:17,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 07:58:17,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:17,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:17,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:17,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:17,804 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:17,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:17,805 INFO L85 PathProgramCache]: Analyzing trace with hash -853340124, now seen corresponding path program 1 times [2023-11-19 07:58:17,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:17,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130718864] [2023-11-19 07:58:17,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:17,806 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 [2023-11-19 07:58:17,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:17,807 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:17,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-19 07:58:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:17,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:17,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:18,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:18,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:18,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130718864] [2023-11-19 07:58:18,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130718864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:18,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:18,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:18,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37929321] [2023-11-19 07:58:18,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:18,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:18,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:18,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:18,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:18,006 INFO L87 Difference]: Start difference. First operand 227 states and 264 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:58:18,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:18,035 INFO L93 Difference]: Finished difference Result 269 states and 310 transitions. [2023-11-19 07:58:18,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:18,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2023-11-19 07:58:18,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:18,039 INFO L225 Difference]: With dead ends: 269 [2023-11-19 07:58:18,039 INFO L226 Difference]: Without dead ends: 269 [2023-11-19 07:58:18,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:18,042 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 37 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:18,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 574 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:58:18,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-19 07:58:18,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 231. [2023-11-19 07:58:18,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 152 states have (on average 1.625) internal successors, (247), 214 states have internal predecessors, (247), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 07:58:18,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 268 transitions. [2023-11-19 07:58:18,058 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 268 transitions. Word has length 35 [2023-11-19 07:58:18,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:18,058 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 268 transitions. [2023-11-19 07:58:18,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:58:18,058 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 268 transitions. [2023-11-19 07:58:18,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 07:58:18,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:18,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:18,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-19 07:58:18,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:18,264 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:18,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:18,265 INFO L85 PathProgramCache]: Analyzing trace with hash -683739979, now seen corresponding path program 1 times [2023-11-19 07:58:18,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:18,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929309788] [2023-11-19 07:58:18,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:18,266 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 [2023-11-19 07:58:18,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:18,267 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:18,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:18,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:58:18,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:18,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:18,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:18,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929309788] [2023-11-19 07:58:18,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929309788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:18,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:18,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:58:18,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093024752] [2023-11-19 07:58:18,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:18,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:58:18,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:18,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:58:18,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:58:18,912 INFO L87 Difference]: Start difference. First operand 231 states and 268 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:58:19,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:19,513 INFO L93 Difference]: Finished difference Result 229 states and 265 transitions. [2023-11-19 07:58:19,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:58:19,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2023-11-19 07:58:19,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:19,516 INFO L225 Difference]: With dead ends: 229 [2023-11-19 07:58:19,516 INFO L226 Difference]: Without dead ends: 229 [2023-11-19 07:58:19,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:58:19,517 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 302 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:19,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 717 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:58:19,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-19 07:58:19,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2023-11-19 07:58:19,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 152 states have (on average 1.605263157894737) internal successors, (244), 212 states have internal predecessors, (244), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 07:58:19,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 265 transitions. [2023-11-19 07:58:19,526 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 265 transitions. Word has length 36 [2023-11-19 07:58:19,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:19,526 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 265 transitions. [2023-11-19 07:58:19,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:58:19,526 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 265 transitions. [2023-11-19 07:58:19,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 07:58:19,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:19,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:19,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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)] Ended with exit code 0 [2023-11-19 07:58:19,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:19,731 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:19,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:19,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2129701272, now seen corresponding path program 1 times [2023-11-19 07:58:19,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:19,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36716914] [2023-11-19 07:58:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:19,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:19,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:19,734 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:19,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:19,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:19,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:19,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:19,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:19,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:19,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36716914] [2023-11-19 07:58:19,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36716914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:19,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:19,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:19,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307006270] [2023-11-19 07:58:19,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:19,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:19,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:19,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:19,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:19,925 INFO L87 Difference]: Start difference. First operand 229 states and 265 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:58:19,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:19,955 INFO L93 Difference]: Finished difference Result 252 states and 290 transitions. [2023-11-19 07:58:19,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:19,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2023-11-19 07:58:19,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:19,958 INFO L225 Difference]: With dead ends: 252 [2023-11-19 07:58:19,958 INFO L226 Difference]: Without dead ends: 252 [2023-11-19 07:58:19,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:19,959 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 23 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:19,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 567 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:58:19,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-19 07:58:19,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 231. [2023-11-19 07:58:19,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 154 states have (on average 1.5974025974025974) internal successors, (246), 214 states have internal predecessors, (246), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 07:58:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 267 transitions. [2023-11-19 07:58:19,981 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 267 transitions. Word has length 40 [2023-11-19 07:58:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:19,981 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 267 transitions. [2023-11-19 07:58:19,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:58:19,982 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 267 transitions. [2023-11-19 07:58:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 07:58:19,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:19,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:19,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:20,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:20,187 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:20,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:20,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2056552015, now seen corresponding path program 1 times [2023-11-19 07:58:20,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:20,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141802815] [2023-11-19 07:58:20,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:20,188 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 [2023-11-19 07:58:20,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:20,189 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:20,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:20,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:58:20,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:20,611 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-19 07:58:20,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-19 07:58:21,043 INFO L349 Elim1Store]: treesize reduction 28, result has 45.1 percent of original size [2023-11-19 07:58:21,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 33 [2023-11-19 07:58:21,316 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2023-11-19 07:58:21,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2023-11-19 07:58:22,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2023-11-19 07:58:22,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:58:22,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:58:22,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 25 [2023-11-19 07:58:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:22,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:22,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:22,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141802815] [2023-11-19 07:58:22,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141802815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:22,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:22,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-19 07:58:22,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680732396] [2023-11-19 07:58:22,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:22,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:58:22,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:22,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:58:22,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:58:22,371 INFO L87 Difference]: Start difference. First operand 231 states and 267 transitions. Second operand has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:58:26,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:26,121 INFO L93 Difference]: Finished difference Result 300 states and 339 transitions. [2023-11-19 07:58:26,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:58:26,123 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2023-11-19 07:58:26,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:26,125 INFO L225 Difference]: With dead ends: 300 [2023-11-19 07:58:26,125 INFO L226 Difference]: Without dead ends: 300 [2023-11-19 07:58:26,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2023-11-19 07:58:26,126 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 818 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:26,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 645 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-19 07:58:26,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-19 07:58:26,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 253. [2023-11-19 07:58:26,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 174 states have (on average 1.5919540229885059) internal successors, (277), 232 states have internal predecessors, (277), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-19 07:58:26,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 301 transitions. [2023-11-19 07:58:26,136 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 301 transitions. Word has length 42 [2023-11-19 07:58:26,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:26,136 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 301 transitions. [2023-11-19 07:58:26,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:58:26,136 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 301 transitions. [2023-11-19 07:58:26,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 07:58:26,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:26,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:26,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:26,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:26,342 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:26,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:26,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2056552016, now seen corresponding path program 1 times [2023-11-19 07:58:26,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:26,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073595913] [2023-11-19 07:58:26,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:26,343 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 [2023-11-19 07:58:26,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:26,345 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:26,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:26,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-19 07:58:26,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:26,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:58:26,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-19 07:58:26,825 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-11-19 07:58:26,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-11-19 07:58:27,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:58:27,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-19 07:58:27,399 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-19 07:58:27,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-19 07:58:27,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:27,694 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:27,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:27,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073595913] [2023-11-19 07:58:27,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073595913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:27,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:27,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:58:27,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338489918] [2023-11-19 07:58:27,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:27,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:58:27,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:27,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:58:27,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:58:27,696 INFO L87 Difference]: Start difference. First operand 253 states and 301 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:58:32,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:32,812 INFO L93 Difference]: Finished difference Result 288 states and 329 transitions. [2023-11-19 07:58:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:58:32,813 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2023-11-19 07:58:32,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:32,815 INFO L225 Difference]: With dead ends: 288 [2023-11-19 07:58:32,815 INFO L226 Difference]: Without dead ends: 288 [2023-11-19 07:58:32,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2023-11-19 07:58:32,816 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 395 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:32,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 495 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-19 07:58:32,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-19 07:58:32,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 251. [2023-11-19 07:58:32,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 174 states have (on average 1.5689655172413792) internal successors, (273), 230 states have internal predecessors, (273), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-19 07:58:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 297 transitions. [2023-11-19 07:58:32,825 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 297 transitions. Word has length 42 [2023-11-19 07:58:32,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:32,826 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 297 transitions. [2023-11-19 07:58:32,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:58:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 297 transitions. [2023-11-19 07:58:32,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 07:58:32,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:32,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:32,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:33,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:33,033 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:33,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:33,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1536722730, now seen corresponding path program 1 times [2023-11-19 07:58:33,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:33,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783755131] [2023-11-19 07:58:33,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:33,034 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 [2023-11-19 07:58:33,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:33,035 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:33,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:33,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:58:33,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:33,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:58:33,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:33,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:33,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:33,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783755131] [2023-11-19 07:58:33,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783755131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:33,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:33,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:58:33,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889916017] [2023-11-19 07:58:33,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:33,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:58:33,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:33,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:58:33,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:58:33,378 INFO L87 Difference]: Start difference. First operand 251 states and 297 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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) [2023-11-19 07:58:34,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:34,345 INFO L93 Difference]: Finished difference Result 263 states and 298 transitions. [2023-11-19 07:58:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:58:34,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 43 [2023-11-19 07:58:34,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:34,348 INFO L225 Difference]: With dead ends: 263 [2023-11-19 07:58:34,348 INFO L226 Difference]: Without dead ends: 263 [2023-11-19 07:58:34,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:58:34,349 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 75 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:34,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 712 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:58:34,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-19 07:58:34,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 250. [2023-11-19 07:58:34,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 174 states have (on average 1.5517241379310345) internal successors, (270), 229 states have internal predecessors, (270), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-19 07:58:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 294 transitions. [2023-11-19 07:58:34,358 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 294 transitions. Word has length 43 [2023-11-19 07:58:34,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:34,359 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 294 transitions. [2023-11-19 07:58:34,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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) [2023-11-19 07:58:34,359 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 294 transitions. [2023-11-19 07:58:34,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 07:58:34,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:34,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:34,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:34,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:34,573 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:34,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:34,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1536722729, now seen corresponding path program 1 times [2023-11-19 07:58:34,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:34,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143156166] [2023-11-19 07:58:34,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:34,574 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 [2023-11-19 07:58:34,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:34,575 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:34,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-19 07:58:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:34,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:58:34,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:34,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-19 07:58:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:35,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:35,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:35,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143156166] [2023-11-19 07:58:35,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143156166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:35,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:35,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:58:35,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898819747] [2023-11-19 07:58:35,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:35,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:58:35,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:35,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:58:35,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:58:35,071 INFO L87 Difference]: Start difference. First operand 250 states and 294 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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) [2023-11-19 07:58:36,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:36,354 INFO L93 Difference]: Finished difference Result 267 states and 303 transitions. [2023-11-19 07:58:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:58:36,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 43 [2023-11-19 07:58:36,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:36,357 INFO L225 Difference]: With dead ends: 267 [2023-11-19 07:58:36,357 INFO L226 Difference]: Without dead ends: 267 [2023-11-19 07:58:36,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:58:36,357 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 58 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:36,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 731 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:58:36,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-11-19 07:58:36,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 250. [2023-11-19 07:58:36,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 174 states have (on average 1.5402298850574712) internal successors, (268), 229 states have internal predecessors, (268), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-19 07:58:36,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 292 transitions. [2023-11-19 07:58:36,367 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 292 transitions. Word has length 43 [2023-11-19 07:58:36,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:36,367 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 292 transitions. [2023-11-19 07:58:36,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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) [2023-11-19 07:58:36,368 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 292 transitions. [2023-11-19 07:58:36,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 07:58:36,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:36,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:36,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:36,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:36,574 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:36,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:36,574 INFO L85 PathProgramCache]: Analyzing trace with hash -671376864, now seen corresponding path program 1 times [2023-11-19 07:58:36,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:36,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582635812] [2023-11-19 07:58:36,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:36,575 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 [2023-11-19 07:58:36,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:36,576 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:36,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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 [2023-11-19 07:58:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:36,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:36,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:36,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:36,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:36,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582635812] [2023-11-19 07:58:36,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582635812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:36,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:36,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:36,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246595848] [2023-11-19 07:58:36,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:36,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:36,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:36,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:36,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:36,754 INFO L87 Difference]: Start difference. First operand 250 states and 292 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:58:36,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:36,820 INFO L93 Difference]: Finished difference Result 270 states and 312 transitions. [2023-11-19 07:58:36,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:36,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2023-11-19 07:58:36,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:36,832 INFO L225 Difference]: With dead ends: 270 [2023-11-19 07:58:36,832 INFO L226 Difference]: Without dead ends: 270 [2023-11-19 07:58:36,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:36,834 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 43 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:36,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 547 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:58:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-19 07:58:36,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 252. [2023-11-19 07:58:36,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 176 states have (on average 1.5284090909090908) internal successors, (269), 231 states have internal predecessors, (269), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-19 07:58:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 293 transitions. [2023-11-19 07:58:36,857 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 293 transitions. Word has length 43 [2023-11-19 07:58:36,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:36,857 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 293 transitions. [2023-11-19 07:58:36,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:58:36,858 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 293 transitions. [2023-11-19 07:58:36,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 07:58:36,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:36,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:36,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:37,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:58:37,064 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2023-11-19 07:58:37,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:37,064 INFO L85 PathProgramCache]: Analyzing trace with hash -967151596, now seen corresponding path program 1 times [2023-11-19 07:58:37,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:58:37,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790843777] [2023-11-19 07:58:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:37,065 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 [2023-11-19 07:58:37,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:58:37,066 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -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) [2023-11-19 07:58:37,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b9603b1-b7ae-44d1-a86a-4ed5dfa604d1/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-19 07:58:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:37,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-19 07:58:37,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:37,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-19 07:58:37,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:58:37,735 INFO L349 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2023-11-19 07:58:37,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 44 [2023-11-19 07:58:37,845 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-11-19 07:58:37,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2023-11-19 07:58:38,262 INFO L349 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2023-11-19 07:58:38,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 44 [2023-11-19 07:58:38,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 33 [2023-11-19 07:58:39,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 33 [2023-11-19 07:58:39,881 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-11-19 07:58:39,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 29 [2023-11-19 07:58:39,987 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-19 07:58:40,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-19 07:58:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:40,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:40,250 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:58:40,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790843777] [2023-11-19 07:58:40,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790843777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:40,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:40,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-19 07:58:40,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107211267] [2023-11-19 07:58:40,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:40,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 07:58:40,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:58:40,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 07:58:40,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:58:40,252 INFO L87 Difference]: Start difference. First operand 252 states and 293 transitions. Second operand has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)