./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-memsafety/fillarray1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/fillarray1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:21:23,836 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:21:23,952 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:21:23,959 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:21:23,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:21:24,010 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:21:24,012 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:21:24,013 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:21:24,014 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:21:24,019 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:21:24,020 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:21:24,021 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:21:24,022 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:21:24,024 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:21:24,024 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:21:24,025 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:21:24,025 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:21:24,026 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:21:24,026 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:21:24,027 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:21:24,027 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:21:24,028 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:21:24,028 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:21:24,029 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:21:24,029 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:21:24,030 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:21:24,031 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:21:24,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:21:24,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:21:24,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:21:24,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:21:24,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:21:24,035 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:21:24,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:21:24,036 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:21:24,036 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:21:24,037 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:21:24,037 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:21:24,046 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_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 [2023-11-12 02:21:24,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:21:24,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:21:24,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:21:24,425 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:21:24,426 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:21:24,428 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-memsafety/fillarray1.i [2023-11-12 02:21:27,569 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:21:27,880 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:21:27,883 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/sv-benchmarks/c/pthread-memsafety/fillarray1.i [2023-11-12 02:21:27,909 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/data/af6d58475/4f4c498abc914218b2754e02bde6dbc0/FLAG19b4308c0 [2023-11-12 02:21:27,927 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/data/af6d58475/4f4c498abc914218b2754e02bde6dbc0 [2023-11-12 02:21:27,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:21:27,936 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:21:27,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:21:27,939 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:21:27,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:21:27,946 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:21:27" (1/1) ... [2023-11-12 02:21:27,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4031f351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:27, skipping insertion in model container [2023-11-12 02:21:27,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:21:27" (1/1) ... [2023-11-12 02:21:28,019 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:21:28,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:21:28,679 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-12 02:21:28,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3c1c015c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:28, skipping insertion in model container [2023-11-12 02:21:28,680 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:21:28,681 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 02:21:28,684 INFO L158 Benchmark]: Toolchain (without parser) took 746.33ms. Allocated memory is still 123.7MB. Free memory was 78.2MB in the beginning and 64.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 02:21:28,685 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 123.7MB. Free memory was 92.9MB in the beginning and 92.8MB in the end (delta: 19.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:21:28,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 743.25ms. Allocated memory is still 123.7MB. Free memory was 78.2MB in the beginning and 64.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 02:21:28,688 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 123.7MB. Free memory was 92.9MB in the beginning and 92.8MB in the end (delta: 19.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 743.25ms. Allocated memory is still 123.7MB. Free memory was 78.2MB in the beginning and 64.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1044]: 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_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/fillarray1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:21:31,325 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:21:31,459 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-12 02:21:31,467 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:21:31,468 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:21:31,535 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:21:31,536 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:21:31,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:21:31,538 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:21:31,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:21:31,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:21:31,545 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:21:31,545 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:21:31,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:21:31,548 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:21:31,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:21:31,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:21:31,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:21:31,550 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:21:31,551 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:21:31,552 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:21:31,553 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:21:31,553 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:21:31,554 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 02:21:31,554 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 02:21:31,555 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:21:31,555 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:21:31,556 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:21:31,557 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:21:31,557 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:21:31,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:21:31,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:21:31,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:21:31,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:21:31,561 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-12 02:21:31,561 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 02:21:31,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:21:31,562 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:21:31,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:21:31,563 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-12 02:21:31,564 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:21:31,564 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_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d955c319d131d508b8618ef571ba23da865842e29989ccda626762130a6dda2 [2023-11-12 02:21:31,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:21:32,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:21:32,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:21:32,016 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:21:32,016 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:21:32,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-memsafety/fillarray1.i [2023-11-12 02:21:35,140 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:21:35,525 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:21:35,526 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/sv-benchmarks/c/pthread-memsafety/fillarray1.i [2023-11-12 02:21:35,557 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/data/8b62a7ee9/5322804a1e9d41d7baf8bb84e1e09186/FLAGd6b688089 [2023-11-12 02:21:35,575 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/data/8b62a7ee9/5322804a1e9d41d7baf8bb84e1e09186 [2023-11-12 02:21:35,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:21:35,583 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:21:35,586 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:21:35,586 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:21:35,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:21:35,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:21:35" (1/1) ... [2023-11-12 02:21:35,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bcca8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:35, skipping insertion in model container [2023-11-12 02:21:35,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:21:35" (1/1) ... [2023-11-12 02:21:35,666 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:21:36,337 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:21:36,366 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 02:21:36,385 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:21:36,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:21:36,444 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:21:36,490 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:21:36,582 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:21:36,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:36 WrapperNode [2023-11-12 02:21:36,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:21:36,584 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:21:36,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:21:36,585 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:21:36,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:36" (1/1) ... [2023-11-12 02:21:36,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:36" (1/1) ... [2023-11-12 02:21:36,676 INFO L138 Inliner]: procedures = 263, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2023-11-12 02:21:36,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:21:36,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:21:36,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:21:36,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:21:36,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:36" (1/1) ... [2023-11-12 02:21:36,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:36" (1/1) ... [2023-11-12 02:21:36,702 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:36" (1/1) ... [2023-11-12 02:21:36,703 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:36" (1/1) ... [2023-11-12 02:21:36,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:36" (1/1) ... [2023-11-12 02:21:36,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:36" (1/1) ... [2023-11-12 02:21:36,733 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:36" (1/1) ... [2023-11-12 02:21:36,735 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:36" (1/1) ... [2023-11-12 02:21:36,739 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:21:36,740 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:21:36,740 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:21:36,740 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:21:36,741 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:36" (1/1) ... [2023-11-12 02:21:36,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:21:36,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:21:36,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:21:36,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:21:36,840 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-12 02:21:36,840 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-12 02:21:36,840 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-12 02:21:36,841 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-12 02:21:36,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:21:36,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:21:36,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 02:21:36,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:21:36,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:21:36,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:21:36,844 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:21:37,068 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:21:37,070 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:21:37,484 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:21:37,494 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:21:37,496 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 02:21:37,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:21:37 BoogieIcfgContainer [2023-11-12 02:21:37,499 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:21:37,502 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:21:37,502 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:21:37,506 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:21:37,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:21:35" (1/3) ... [2023-11-12 02:21:37,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bfc3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:21:37, skipping insertion in model container [2023-11-12 02:21:37,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:36" (2/3) ... [2023-11-12 02:21:37,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bfc3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:21:37, skipping insertion in model container [2023-11-12 02:21:37,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:21:37" (3/3) ... [2023-11-12 02:21:37,511 INFO L112 eAbstractionObserver]: Analyzing ICFG fillarray1.i [2023-11-12 02:21:37,532 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:21:37,532 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-12 02:21:37,532 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:21:37,632 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:21:37,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 103 transitions, 214 flow [2023-11-12 02:21:37,766 INFO L124 PetriNetUnfolderBase]: 8/108 cut-off events. [2023-11-12 02:21:37,766 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:21:37,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 108 events. 8/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 152 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2023-11-12 02:21:37,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 103 transitions, 214 flow [2023-11-12 02:21:37,784 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 101 transitions, 208 flow [2023-11-12 02:21:37,793 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:21:37,807 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 101 transitions, 208 flow [2023-11-12 02:21:37,812 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 101 transitions, 208 flow [2023-11-12 02:21:37,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 101 transitions, 208 flow [2023-11-12 02:21:37,855 INFO L124 PetriNetUnfolderBase]: 8/108 cut-off events. [2023-11-12 02:21:37,855 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:21:37,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 108 events. 8/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 150 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2023-11-12 02:21:37,862 INFO L119 LiptonReduction]: Number of co-enabled transitions 2622 [2023-11-12 02:21:48,384 INFO L134 LiptonReduction]: Checked pairs total: 6999 [2023-11-12 02:21:48,385 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-11-12 02:21:48,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:21:48,435 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;@551ea56e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:21:48,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-12 02:21:48,439 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:21:48,439 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-12 02:21:48,439 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:21:48,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:48,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:21:48,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:21:48,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash 398, now seen corresponding path program 1 times [2023-11-12 02:21:48,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:21:48,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552354470] [2023-11-12 02:21:48,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:48,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:21:48,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:21:48,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:21:48,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-12 02:21:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:48,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:21:48,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:21:48,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:21:48,594 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:21:48,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:21:48,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552354470] [2023-11-12 02:21:48,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552354470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:48,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:48,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:21:48,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670377190] [2023-11-12 02:21:48,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:48,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:21:48,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:21:48,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:21:48,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:21:48,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 189 [2023-11-12 02:21:48,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 97.5) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:48,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:48,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 189 [2023-11-12 02:21:48,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:48,990 INFO L124 PetriNetUnfolderBase]: 629/1284 cut-off events. [2023-11-12 02:21:48,990 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:21:48,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2155 conditions, 1284 events. 629/1284 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7855 event pairs, 480 based on Foata normal form. 95/955 useless extension candidates. Maximal degree in co-relation 2140. Up to 852 conditions per place. [2023-11-12 02:21:49,010 INFO L140 encePairwiseOnDemand]: 185/189 looper letters, 25 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2023-11-12 02:21:49,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 134 flow [2023-11-12 02:21:49,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:21:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:21:49,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 223 transitions. [2023-11-12 02:21:49,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58994708994709 [2023-11-12 02:21:49,031 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 223 transitions. [2023-11-12 02:21:49,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 223 transitions. [2023-11-12 02:21:49,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:49,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 223 transitions. [2023-11-12 02:21:49,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:49,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:49,051 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:49,053 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 92 flow. Second operand 2 states and 223 transitions. [2023-11-12 02:21:49,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 134 flow [2023-11-12 02:21:49,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:21:49,059 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 82 flow [2023-11-12 02:21:49,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2023-11-12 02:21:49,068 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-11-12 02:21:49,069 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 82 flow [2023-11-12 02:21:49,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 97.5) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:49,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:49,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:21:49,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:21:49,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:21:49,286 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:21:49,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:49,287 INFO L85 PathProgramCache]: Analyzing trace with hash 12506, now seen corresponding path program 1 times [2023-11-12 02:21:49,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:21:49,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883399101] [2023-11-12 02:21:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:49,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:21:49,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:21:49,290 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:21:49,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-12 02:21:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:49,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:21:49,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:21:49,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:21:49,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:21:49,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:21:49,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883399101] [2023-11-12 02:21:49,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883399101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:49,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:49,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:21:49,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824456395] [2023-11-12 02:21:49,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:49,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:21:49,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:21:49,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:21:49,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:21:49,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 189 [2023-11-12 02:21:49,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:49,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:49,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 189 [2023-11-12 02:21:49,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:49,825 INFO L124 PetriNetUnfolderBase]: 762/1437 cut-off events. [2023-11-12 02:21:49,825 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:21:49,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2545 conditions, 1437 events. 762/1437 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8672 event pairs, 551 based on Foata normal form. 0/951 useless extension candidates. Maximal degree in co-relation 2542. Up to 969 conditions per place. [2023-11-12 02:21:49,840 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 37 selfloop transitions, 1 changer transitions 2/52 dead transitions. [2023-11-12 02:21:49,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 188 flow [2023-11-12 02:21:49,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:21:49,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:21:49,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-11-12 02:21:49,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5326278659611993 [2023-11-12 02:21:49,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-11-12 02:21:49,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-11-12 02:21:49,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:49,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-11-12 02:21:49,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:49,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:49,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:49,851 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 82 flow. Second operand 3 states and 302 transitions. [2023-11-12 02:21:49,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 188 flow [2023-11-12 02:21:49,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:21:49,853 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 85 flow [2023-11-12 02:21:49,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-11-12 02:21:49,854 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2023-11-12 02:21:49,855 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 85 flow [2023-11-12 02:21:49,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:49,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:49,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:21:49,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:21:50,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:21:50,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:21:50,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash 390543, now seen corresponding path program 1 times [2023-11-12 02:21:50,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:21:50,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464573422] [2023-11-12 02:21:50,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:50,072 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:21:50,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:21:50,077 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:21:50,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-12 02:21:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:50,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:21:50,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:21:50,260 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2023-11-12 02:21:50,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:21:50,281 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:21:50,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:21:50,290 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-12 02:21:50,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:21:50,299 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:21:50,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:21:50,310 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-12 02:21:50,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:21:50,321 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:21:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:21:50,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:21:50,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:21:50,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464573422] [2023-11-12 02:21:50,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464573422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:50,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:50,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:21:50,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798411558] [2023-11-12 02:21:50,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:50,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:21:50,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:21:50,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:21:50,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:21:50,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 189 [2023-11-12 02:21:50,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:50,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:50,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 189 [2023-11-12 02:21:50,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:50,711 INFO L124 PetriNetUnfolderBase]: 656/1240 cut-off events. [2023-11-12 02:21:50,711 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-12 02:21:50,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 1240 events. 656/1240 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7477 event pairs, 261 based on Foata normal form. 0/884 useless extension candidates. Maximal degree in co-relation 2294. Up to 478 conditions per place. [2023-11-12 02:21:50,725 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 34 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-11-12 02:21:50,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 179 flow [2023-11-12 02:21:50,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:21:50,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:21:50,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-11-12 02:21:50,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2023-11-12 02:21:50,730 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-11-12 02:21:50,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-11-12 02:21:50,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:50,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-11-12 02:21:50,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:50,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:50,736 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:50,736 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 85 flow. Second operand 3 states and 301 transitions. [2023-11-12 02:21:50,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 179 flow [2023-11-12 02:21:50,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 175 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-12 02:21:50,745 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 83 flow [2023-11-12 02:21:50,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-11-12 02:21:50,747 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-11-12 02:21:50,748 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 83 flow [2023-11-12 02:21:50,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:50,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:50,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:21:50,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:21:50,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:21:50,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:21:50,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:50,961 INFO L85 PathProgramCache]: Analyzing trace with hash 390544, now seen corresponding path program 1 times [2023-11-12 02:21:50,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:21:50,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690705879] [2023-11-12 02:21:50,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:50,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:21:50,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:21:50,963 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:21:50,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-12 02:21:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:51,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:21:51,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:21:51,066 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-12 02:21:51,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:21:51,080 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-12 02:21:51,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:21:51,090 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-12 02:21:51,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:21:51,101 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:21:51,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:21:51,134 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-12 02:21:51,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:21:51,152 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-12 02:21:51,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:21:51,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:21:51,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:21:51,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690705879] [2023-11-12 02:21:51,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690705879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:51,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:51,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:21:51,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829228800] [2023-11-12 02:21:51,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:51,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:21:51,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:21:51,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:21:51,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:21:51,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 189 [2023-11-12 02:21:51,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:51,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:51,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 189 [2023-11-12 02:21:51,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:51,526 INFO L124 PetriNetUnfolderBase]: 585/1165 cut-off events. [2023-11-12 02:21:51,526 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-12 02:21:51,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2091 conditions, 1165 events. 585/1165 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7075 event pairs, 326 based on Foata normal form. 0/853 useless extension candidates. Maximal degree in co-relation 2087. Up to 583 conditions per place. [2023-11-12 02:21:51,538 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 32 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-12 02:21:51,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 173 flow [2023-11-12 02:21:51,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:21:51,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:21:51,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-11-12 02:21:51,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2023-11-12 02:21:51,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-11-12 02:21:51,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-11-12 02:21:51,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:51,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-11-12 02:21:51,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:51,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:51,546 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:51,547 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 83 flow. Second operand 3 states and 308 transitions. [2023-11-12 02:21:51,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 173 flow [2023-11-12 02:21:51,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 169 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:21:51,549 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 81 flow [2023-11-12 02:21:51,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-11-12 02:21:51,550 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2023-11-12 02:21:51,551 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 81 flow [2023-11-12 02:21:51,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:51,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:51,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:21:51,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:21:51,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:21:51,764 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:21:51,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:51,764 INFO L85 PathProgramCache]: Analyzing trace with hash 375319958, now seen corresponding path program 1 times [2023-11-12 02:21:51,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:21:51,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22241628] [2023-11-12 02:21:51,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:51,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:21:51,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:21:51,767 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:21:51,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-12 02:21:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:51,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:21:51,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:21:51,917 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-12 02:21:51,917 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-12 02:21:51,944 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:21:51,945 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-12 02:21:52,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:21:52,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:21:52,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:21:52,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22241628] [2023-11-12 02:21:52,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22241628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:52,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:52,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:21:52,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293340860] [2023-11-12 02:21:52,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:52,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:21:52,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:21:52,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:21:52,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:21:52,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 189 [2023-11-12 02:21:52,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:52,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:52,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 189 [2023-11-12 02:21:52,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:52,501 INFO L124 PetriNetUnfolderBase]: 557/1045 cut-off events. [2023-11-12 02:21:52,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:21:52,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1971 conditions, 1045 events. 557/1045 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6087 event pairs, 184 based on Foata normal form. 0/779 useless extension candidates. Maximal degree in co-relation 1967. Up to 477 conditions per place. [2023-11-12 02:21:52,512 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 32 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-12 02:21:52,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 171 flow [2023-11-12 02:21:52,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:21:52,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:21:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-11-12 02:21:52,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379188712522046 [2023-11-12 02:21:52,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-11-12 02:21:52,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-11-12 02:21:52,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:52,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-11-12 02:21:52,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:52,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:52,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:52,520 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 81 flow. Second operand 3 states and 305 transitions. [2023-11-12 02:21:52,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 171 flow [2023-11-12 02:21:52,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 167 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:21:52,534 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 79 flow [2023-11-12 02:21:52,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-11-12 02:21:52,537 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-11-12 02:21:52,537 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 79 flow [2023-11-12 02:21:52,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:52,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:52,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:21:52,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:21:52,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:21:52,759 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:21:52,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:52,759 INFO L85 PathProgramCache]: Analyzing trace with hash 375319938, now seen corresponding path program 1 times [2023-11-12 02:21:52,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:21:52,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623267462] [2023-11-12 02:21:52,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:52,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:21:52,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:21:52,761 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:21:52,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-12 02:21:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:52,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:21:52,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:21:52,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:21:52,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:21:52,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:21:52,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623267462] [2023-11-12 02:21:52,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623267462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:52,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:52,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:21:52,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271814894] [2023-11-12 02:21:52,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:52,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:21:52,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:21:52,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:21:52,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:21:52,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 189 [2023-11-12 02:21:52,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:52,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:52,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 189 [2023-11-12 02:21:52,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:53,067 INFO L124 PetriNetUnfolderBase]: 417/834 cut-off events. [2023-11-12 02:21:53,067 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-12 02:21:53,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1522 conditions, 834 events. 417/834 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4685 event pairs, 255 based on Foata normal form. 0/657 useless extension candidates. Maximal degree in co-relation 1518. Up to 464 conditions per place. [2023-11-12 02:21:53,076 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 30 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-12 02:21:53,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 165 flow [2023-11-12 02:21:53,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:21:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:21:53,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-11-12 02:21:53,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.544973544973545 [2023-11-12 02:21:53,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-11-12 02:21:53,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-11-12 02:21:53,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:53,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-11-12 02:21:53,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:53,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:53,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:53,086 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 79 flow. Second operand 3 states and 309 transitions. [2023-11-12 02:21:53,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 165 flow [2023-11-12 02:21:53,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:21:53,089 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 77 flow [2023-11-12 02:21:53,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-11-12 02:21:53,092 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2023-11-12 02:21:53,093 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 77 flow [2023-11-12 02:21:53,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:53,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:53,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:21:53,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:21:53,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:21:53,305 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:21:53,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:53,306 INFO L85 PathProgramCache]: Analyzing trace with hash 375319939, now seen corresponding path program 1 times [2023-11-12 02:21:53,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:21:53,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342991539] [2023-11-12 02:21:53,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:53,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:21:53,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:21:53,307 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:21:53,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-12 02:21:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:53,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:21:53,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:21:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:21:53,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:21:53,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:21:53,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342991539] [2023-11-12 02:21:53,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342991539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:53,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:53,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:21:53,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011110051] [2023-11-12 02:21:53,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:53,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:21:53,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:21:53,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:21:53,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:21:53,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 189 [2023-11-12 02:21:53,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:53,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:53,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 189 [2023-11-12 02:21:53,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:53,630 INFO L124 PetriNetUnfolderBase]: 326/658 cut-off events. [2023-11-12 02:21:53,630 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-12 02:21:53,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1227 conditions, 658 events. 326/658 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3544 event pairs, 184 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 1223. Up to 345 conditions per place. [2023-11-12 02:21:53,636 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 29 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-12 02:21:53,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 161 flow [2023-11-12 02:21:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:21:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:21:53,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-11-12 02:21:53,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2023-11-12 02:21:53,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-11-12 02:21:53,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-11-12 02:21:53,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:21:53,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-11-12 02:21:53,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:53,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:53,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:53,644 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 77 flow. Second operand 3 states and 308 transitions. [2023-11-12 02:21:53,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 161 flow [2023-11-12 02:21:53,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 157 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:21:53,646 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 75 flow [2023-11-12 02:21:53,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-11-12 02:21:53,647 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2023-11-12 02:21:53,647 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 75 flow [2023-11-12 02:21:53,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:53,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:21:53,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:21:53,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:21:53,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:21:53,860 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:21:53,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:53,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1357131099, now seen corresponding path program 1 times [2023-11-12 02:21:53,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:21:53,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270594111] [2023-11-12 02:21:53,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:53,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:21:53,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:21:53,865 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:21:53,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-12 02:21:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:53,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 02:21:53,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:21:54,389 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~a~2#1.base| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_83| (_ BitVec 32)) (|ULTIMATE.start_main_~#id1~0#1.base| (_ BitVec 32))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~a~2#1.base| (_ bv1 1)))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~a~2#1.base|) (_ bv0 1)) (= (_ bv0 1) (select .cse0 |ULTIMATE.start_main_~#id1~0#1.base|)) (= (select (store .cse0 |ULTIMATE.start_main_~#id1~0#1.base| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_83|) (_ bv0 1)) (= (store (store (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~a~2#1.base| (_ bv0 1)) |ULTIMATE.start_main_~#id1~0#1.base| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_83| (_ bv0 1)) |c_#valid|)))) is different from true [2023-11-12 02:21:54,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:21:54,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:21:54,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:21:54,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270594111] [2023-11-12 02:21:54,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270594111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:54,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:54,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:21:54,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544634287] [2023-11-12 02:21:54,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:54,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:21:54,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:21:54,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:21:54,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2023-11-12 02:21:54,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 189 [2023-11-12 02:21:54,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 75 flow. Second operand has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:54,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:21:54,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 189 [2023-11-12 02:21:54,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:21:57,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:21:59,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:22:00,405 INFO L124 PetriNetUnfolderBase]: 663/1097 cut-off events. [2023-11-12 02:22:00,406 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-12 02:22:00,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2316 conditions, 1097 events. 663/1097 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5537 event pairs, 48 based on Foata normal form. 49/966 useless extension candidates. Maximal degree in co-relation 2312. Up to 534 conditions per place. [2023-11-12 02:22:00,418 INFO L140 encePairwiseOnDemand]: 169/189 looper letters, 61 selfloop transitions, 19 changer transitions 0/90 dead transitions. [2023-11-12 02:22:00,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 90 transitions, 352 flow [2023-11-12 02:22:00,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:22:00,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:22:00,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 483 transitions. [2023-11-12 02:22:00,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2023-11-12 02:22:00,437 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 483 transitions. [2023-11-12 02:22:00,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 483 transitions. [2023-11-12 02:22:00,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:00,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 483 transitions. [2023-11-12 02:22:00,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.5) internal successors, (483), 6 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:00,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:00,448 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:00,448 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 75 flow. Second operand 6 states and 483 transitions. [2023-11-12 02:22:00,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 90 transitions, 352 flow [2023-11-12 02:22:00,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 90 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:22:00,456 INFO L231 Difference]: Finished difference. Result has 42 places, 48 transitions, 188 flow [2023-11-12 02:22:00,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=42, PETRI_TRANSITIONS=48} [2023-11-12 02:22:00,458 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-11-12 02:22:00,458 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 48 transitions, 188 flow [2023-11-12 02:22:00,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:00,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:00,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:00,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-12 02:22:00,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:22:00,671 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:22:00,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:00,672 INFO L85 PathProgramCache]: Analyzing trace with hash -878605995, now seen corresponding path program 1 times [2023-11-12 02:22:00,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:22:00,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713805347] [2023-11-12 02:22:00,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:00,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:22:00,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:22:00,673 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:22:00,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-12 02:22:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:00,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 02:22:00,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:01,184 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~a~2#1.base| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_84| (_ BitVec 32)) (|ULTIMATE.start_main_~#id1~0#1.base| (_ BitVec 32))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~a~2#1.base| (_ bv1 1)))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~a~2#1.base|) (_ bv0 1)) (= (_ bv0 1) (select .cse0 |ULTIMATE.start_main_~#id1~0#1.base|)) (= (select (store .cse0 |ULTIMATE.start_main_~#id1~0#1.base| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_84|) (_ bv0 1)) (= (store (store (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~a~2#1.base| (_ bv0 1)) |ULTIMATE.start_main_~#id1~0#1.base| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_84| (_ bv0 1)) |c_#valid|)))) is different from true [2023-11-12 02:22:01,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:01,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:01,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:22:01,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713805347] [2023-11-12 02:22:01,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713805347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:01,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:01,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:22:01,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335806108] [2023-11-12 02:22:01,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:01,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:22:01,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:22:01,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:22:01,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=13, Unknown=2, NotChecked=6, Total=30 [2023-11-12 02:22:03,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:22:04,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 189 [2023-11-12 02:22:04,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 48 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:04,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:04,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 189 [2023-11-12 02:22:04,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:07,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:22:09,594 INFO L124 PetriNetUnfolderBase]: 674/1120 cut-off events. [2023-11-12 02:22:09,595 INFO L125 PetriNetUnfolderBase]: For 245/291 co-relation queries the response was YES. [2023-11-12 02:22:09,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3414 conditions, 1120 events. 674/1120 cut-off events. For 245/291 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5680 event pairs, 48 based on Foata normal form. 8/899 useless extension candidates. Maximal degree in co-relation 3409. Up to 857 conditions per place. [2023-11-12 02:22:09,610 INFO L140 encePairwiseOnDemand]: 170/189 looper letters, 62 selfloop transitions, 27 changer transitions 0/99 dead transitions. [2023-11-12 02:22:09,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 99 transitions, 571 flow [2023-11-12 02:22:09,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:22:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:22:09,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 483 transitions. [2023-11-12 02:22:09,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2023-11-12 02:22:09,616 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 483 transitions. [2023-11-12 02:22:09,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 483 transitions. [2023-11-12 02:22:09,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:09,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 483 transitions. [2023-11-12 02:22:09,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.5) internal successors, (483), 6 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:09,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:09,625 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:09,625 INFO L175 Difference]: Start difference. First operand has 42 places, 48 transitions, 188 flow. Second operand 6 states and 483 transitions. [2023-11-12 02:22:09,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 99 transitions, 571 flow [2023-11-12 02:22:09,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 99 transitions, 549 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:22:09,631 INFO L231 Difference]: Finished difference. Result has 44 places, 57 transitions, 301 flow [2023-11-12 02:22:09,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=44, PETRI_TRANSITIONS=57} [2023-11-12 02:22:09,632 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-11-12 02:22:09,632 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 57 transitions, 301 flow [2023-11-12 02:22:09,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:09,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:09,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:09,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:09,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:22:09,845 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:22:09,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:09,845 INFO L85 PathProgramCache]: Analyzing trace with hash -878606088, now seen corresponding path program 1 times [2023-11-12 02:22:09,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:22:09,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192562189] [2023-11-12 02:22:09,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:09,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:22:09,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:22:09,847 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:22:09,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-12 02:22:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:09,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 02:22:09,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:10,317 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~a~2#1.base| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id2~0#1.base_85| (_ BitVec 32)) (|ULTIMATE.start_main_~#id1~0#1.base| (_ BitVec 32))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~a~2#1.base| (_ bv1 1)))) (and (= (select (store .cse0 |ULTIMATE.start_main_~#id1~0#1.base| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_85|) (_ bv0 1)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~a~2#1.base|) (_ bv0 1)) (= (_ bv0 1) (select .cse0 |ULTIMATE.start_main_~#id1~0#1.base|)) (= (store (store (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~a~2#1.base| (_ bv0 1)) |ULTIMATE.start_main_~#id1~0#1.base| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_85| (_ bv0 1)) |c_#valid|)))) is different from true [2023-11-12 02:22:10,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:10,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:10,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:22:10,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192562189] [2023-11-12 02:22:10,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192562189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:10,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:10,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:22:10,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057831743] [2023-11-12 02:22:10,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:10,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:22:10,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:22:10,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:22:10,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2023-11-12 02:22:11,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 189 [2023-11-12 02:22:11,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 57 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:11,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:11,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 189 [2023-11-12 02:22:11,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:14,175 INFO L124 PetriNetUnfolderBase]: 684/1128 cut-off events. [2023-11-12 02:22:14,176 INFO L125 PetriNetUnfolderBase]: For 533/608 co-relation queries the response was YES. [2023-11-12 02:22:14,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4132 conditions, 1128 events. 684/1128 cut-off events. For 533/608 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5745 event pairs, 48 based on Foata normal form. 16/915 useless extension candidates. Maximal degree in co-relation 4126. Up to 872 conditions per place. [2023-11-12 02:22:14,190 INFO L140 encePairwiseOnDemand]: 170/189 looper letters, 71 selfloop transitions, 27 changer transitions 0/108 dead transitions. [2023-11-12 02:22:14,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 108 transitions, 756 flow [2023-11-12 02:22:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:22:14,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:22:14,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 483 transitions. [2023-11-12 02:22:14,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2023-11-12 02:22:14,194 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 483 transitions. [2023-11-12 02:22:14,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 483 transitions. [2023-11-12 02:22:14,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:14,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 483 transitions. [2023-11-12 02:22:14,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.5) internal successors, (483), 6 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:14,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:14,200 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:14,200 INFO L175 Difference]: Start difference. First operand has 44 places, 57 transitions, 301 flow. Second operand 6 states and 483 transitions. [2023-11-12 02:22:14,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 108 transitions, 756 flow [2023-11-12 02:22:14,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 108 transitions, 726 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:22:14,205 INFO L231 Difference]: Finished difference. Result has 46 places, 66 transitions, 412 flow [2023-11-12 02:22:14,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=412, PETRI_PLACES=46, PETRI_TRANSITIONS=66} [2023-11-12 02:22:14,206 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2023-11-12 02:22:14,207 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 66 transitions, 412 flow [2023-11-12 02:22:14,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.5) internal successors, (411), 6 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:14,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:14,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:14,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:14,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:22:14,420 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:22:14,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:14,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1303935035, now seen corresponding path program 1 times [2023-11-12 02:22:14,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:22:14,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538670331] [2023-11-12 02:22:14,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:14,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:22:14,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:22:14,422 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:22:14,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-12 02:22:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:14,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:22:14,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:14,555 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-12 02:22:14,556 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-12 02:22:14,586 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-12 02:22:14,586 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-12 02:22:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:22:14,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:14,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:22:14,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538670331] [2023-11-12 02:22:14,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538670331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:14,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:14,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:22:14,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023538522] [2023-11-12 02:22:14,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:14,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:22:14,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:22:14,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:22:14,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:22:15,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 189 [2023-11-12 02:22:15,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 66 transitions, 412 flow. Second operand has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:15,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:22:15,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 189 [2023-11-12 02:22:15,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:22:16,910 INFO L124 PetriNetUnfolderBase]: 842/1471 cut-off events. [2023-11-12 02:22:16,910 INFO L125 PetriNetUnfolderBase]: For 1468/1578 co-relation queries the response was YES. [2023-11-12 02:22:16,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5798 conditions, 1471 events. 842/1471 cut-off events. For 1468/1578 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 8282 event pairs, 66 based on Foata normal form. 18/1225 useless extension candidates. Maximal degree in co-relation 5791. Up to 1096 conditions per place. [2023-11-12 02:22:16,931 INFO L140 encePairwiseOnDemand]: 180/189 looper letters, 75 selfloop transitions, 12 changer transitions 0/104 dead transitions. [2023-11-12 02:22:16,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 104 transitions, 812 flow [2023-11-12 02:22:16,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:22:16,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:22:16,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 662 transitions. [2023-11-12 02:22:16,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5003779289493575 [2023-11-12 02:22:16,936 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 662 transitions. [2023-11-12 02:22:16,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 662 transitions. [2023-11-12 02:22:16,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:22:16,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 662 transitions. [2023-11-12 02:22:16,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.57142857142857) internal successors, (662), 7 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:16,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:16,943 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:16,943 INFO L175 Difference]: Start difference. First operand has 46 places, 66 transitions, 412 flow. Second operand 7 states and 662 transitions. [2023-11-12 02:22:16,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 104 transitions, 812 flow [2023-11-12 02:22:16,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 104 transitions, 775 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:22:16,949 INFO L231 Difference]: Finished difference. Result has 53 places, 73 transitions, 476 flow [2023-11-12 02:22:16,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=476, PETRI_PLACES=53, PETRI_TRANSITIONS=73} [2023-11-12 02:22:16,950 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2023-11-12 02:22:16,951 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 73 transitions, 476 flow [2023-11-12 02:22:16,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.0) internal successors, (522), 6 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:22:16,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:22:16,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:16,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:17,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:22:17,164 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-12 02:22:17,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:17,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1303935036, now seen corresponding path program 1 times [2023-11-12 02:22:17,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:22:17,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48336708] [2023-11-12 02:22:17,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:17,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:22:17,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:22:17,166 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 02:22:17,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-12 02:22:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:22:17,263 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:22:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:22:17,354 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-12 02:22:17,354 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:22:17,356 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2023-11-12 02:22:17,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2023-11-12 02:22:17,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2023-11-12 02:22:17,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2023-11-12 02:22:17,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2023-11-12 02:22:17,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2023-11-12 02:22:17,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (11 of 18 remaining) [2023-11-12 02:22:17,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (10 of 18 remaining) [2023-11-12 02:22:17,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (9 of 18 remaining) [2023-11-12 02:22:17,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-11-12 02:22:17,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-11-12 02:22:17,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2023-11-12 02:22:17,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2023-11-12 02:22:17,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2023-11-12 02:22:17,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2023-11-12 02:22:17,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2023-11-12 02:22:17,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2023-11-12 02:22:17,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2023-11-12 02:22:17,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:17,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 02:22:17,563 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:17,568 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-12 02:22:17,568 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:22:17,589 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated [2023-11-12 02:22:17,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:22:17 BasicIcfg [2023-11-12 02:22:17,598 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:22:17,598 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:22:17,598 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:22:17,599 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:22:17,599 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:21:37" (3/4) ... [2023-11-12 02:22:17,600 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-12 02:22:17,620 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated [2023-11-12 02:22:17,681 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:22:17,681 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:22:17,682 INFO L158 Benchmark]: Toolchain (without parser) took 42099.38ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 58.5MB in the beginning and 29.5MB in the end (delta: 29.0MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. [2023-11-12 02:22:17,682 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 62.9MB. Free memory was 39.1MB in the beginning and 39.0MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:22:17,683 INFO L158 Benchmark]: CACSL2BoogieTranslator took 997.48ms. Allocated memory is still 83.9MB. Free memory was 58.3MB in the beginning and 42.8MB in the end (delta: 15.4MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2023-11-12 02:22:17,683 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.00ms. Allocated memory is still 83.9MB. Free memory was 42.8MB in the beginning and 40.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:22:17,685 INFO L158 Benchmark]: Boogie Preprocessor took 61.35ms. Allocated memory is still 83.9MB. Free memory was 40.4MB in the beginning and 38.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:22:17,686 INFO L158 Benchmark]: RCFGBuilder took 759.36ms. Allocated memory is still 83.9MB. Free memory was 38.4MB in the beginning and 45.9MB in the end (delta: -7.5MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2023-11-12 02:22:17,686 INFO L158 Benchmark]: TraceAbstraction took 40095.75ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 45.0MB in the beginning and 33.7MB in the end (delta: 11.4MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. [2023-11-12 02:22:17,687 INFO L158 Benchmark]: Witness Printer took 83.02ms. Allocated memory is still 121.6MB. Free memory was 33.7MB in the beginning and 29.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:22:17,694 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 62.9MB. Free memory was 39.1MB in the beginning and 39.0MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 997.48ms. Allocated memory is still 83.9MB. Free memory was 58.3MB in the beginning and 42.8MB in the end (delta: 15.4MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.00ms. Allocated memory is still 83.9MB. Free memory was 42.8MB in the beginning and 40.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.35ms. Allocated memory is still 83.9MB. Free memory was 40.4MB in the beginning and 38.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 759.36ms. Allocated memory is still 83.9MB. Free memory was 38.4MB in the beginning and 45.9MB in the end (delta: -7.5MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * TraceAbstraction took 40095.75ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 45.0MB in the beginning and 33.7MB in the end (delta: 11.4MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. * Witness Printer took 83.02ms. Allocated memory is still 121.6MB. Free memory was 33.7MB in the beginning and 29.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.6s, 99 PlacesBefore, 43 PlacesAfterwards, 101 TransitionsBefore, 43 TransitionsAfterwards, 2622 CoEnabledTransitionPairs, 6 FixpointIterations, 41 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 86 TotalNumberOfCompositions, 6999 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3298, independent: 3087, independent conditional: 0, independent unconditional: 3087, dependent: 211, dependent conditional: 0, dependent unconditional: 211, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1186, independent: 1153, independent conditional: 0, independent unconditional: 1153, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3298, independent: 1934, independent conditional: 0, independent unconditional: 1934, dependent: 178, dependent conditional: 0, dependent unconditional: 178, unknown: 1186, unknown conditional: 0, unknown unconditional: 1186] , Statistics on independence cache: Total cache size (in pairs): 212, Positive cache size: 191, Positive conditional cache size: 0, Positive unconditional cache size: 191, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1037] 0 int size; [L1038] 0 int ind; [L1039] 0 int j = 2, i = 1; [L1040] 0 int x, y, z; [L1068] 0 size = __VERIFIER_nondet_int() [L1069] COND FALSE 0 !(size < 1 || size > 20) [L1072] 0 int *a = (int *)malloc(size); [L1073] 0 pthread_t id1, id2; [L1074] 0 ind = 0 [L1075] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, a) VAL [\old(argc)=5, a={1:0}, arg={1:0}, argc=5, argv={9:6}, argv={9:6}, i=1, id1={3:0}, id2={7:0}, ind=0, j=2, size=2, x=0, y=0, z=0] [L1042] 1 x = 1 VAL [arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=0, z=0] [L1043] 1 y = 1 [L1044] 1 int *a = (int *)arg; VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1045] COND FALSE 1 !(y == 1 && z) VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1047] COND TRUE 1 ind < size - 1 VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2, x=1, y=1, z=0] [L1048] 1 ++ind [L1049] 1 a[ind] = i - UnprovableResult [Line: 1067]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1077]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1075]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1076]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 129 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 39.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 22.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.7s, HoareTripleCheckerStatistics: 19 mSolverCounterUnknown, 690 SdHoareTripleChecker+Valid, 20.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 450 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 20.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 475 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1381 IncrementalHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 6 mSDtfsCounter, 1381 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=476occurred in iteration=11, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 48 ConstructedInterpolants, 23 QuantifiedInterpolants, 1413 SizeOfPredicates, 17 NumberOfNonLiveVariables, 624 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-12 02:22:17,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94174222-0579-4343-8de1-bbbc3e4d08b3/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)