./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:34:36,454 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:34:36,545 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:34:36,550 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:34:36,551 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:34:36,588 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:34:36,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:34:36,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:34:36,610 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:34:36,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:34:36,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:34:36,612 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:34:36,613 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:34:36,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:34:36,614 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:34:36,615 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:34:36,615 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:34:36,616 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:34:36,616 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:34:36,617 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:34:36,617 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:34:36,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:34:36,618 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:34:36,619 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:34:36,619 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:34:36,620 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:34:36,620 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:34:36,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:34:36,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:34:36,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:36,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:34:36,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:34:36,623 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:34:36,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:34:36,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:34:36,624 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:34:36,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:34:36,625 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:34:36,625 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_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2023-11-19 07:34:36,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:34:36,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:34:36,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:34:36,889 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:34:36,889 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:34:36,891 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-19 07:34:40,079 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:34:40,279 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:34:40,280 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-19 07:34:40,290 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/data/963856219/92e921ce9fe54ab6b5e890033e6f8bcd/FLAGc8f9ecde5 [2023-11-19 07:34:40,306 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/data/963856219/92e921ce9fe54ab6b5e890033e6f8bcd [2023-11-19 07:34:40,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:34:40,310 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:34:40,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:40,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:34:40,318 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:34:40,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:40" (1/1) ... [2023-11-19 07:34:40,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7828c1b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:40, skipping insertion in model container [2023-11-19 07:34:40,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:40" (1/1) ... [2023-11-19 07:34:40,347 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:34:40,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:40,578 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-19 07:34:40,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c406148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:40, skipping insertion in model container [2023-11-19 07:34:40,580 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:40,580 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 07:34:40,582 INFO L158 Benchmark]: Toolchain (without parser) took 271.26ms. Allocated memory is still 157.3MB. Free memory was 110.3MB in the beginning and 100.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:34:40,583 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 157.3MB. Free memory is still 123.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:34:40,584 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.21ms. Allocated memory is still 157.3MB. Free memory was 110.3MB in the beginning and 100.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:34:40,585 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 157.3MB. Free memory is still 123.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 268.21ms. Allocated memory is still 157.3MB. Free memory was 110.3MB in the beginning and 100.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 102]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:34:43,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:34:43,343 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-19 07:34:43,353 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:34:43,353 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:34:43,401 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:34:43,402 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:34:43,403 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:34:43,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:34:43,408 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:34:43,409 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:34:43,410 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:34:43,410 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:34:43,412 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:34:43,412 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:34:43,413 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:34:43,413 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:34:43,414 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:34:43,414 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:34:43,415 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:34:43,416 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:34:43,416 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:34:43,417 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:34:43,417 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:34:43,417 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:34:43,418 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:34:43,418 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:34:43,419 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:34:43,420 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:34:43,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:34:43,421 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:34:43,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:43,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:34:43,422 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:34:43,423 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:34:43,423 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:34:43,423 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:34:43,423 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:34:43,424 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:34:43,425 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:34:43,425 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:34:43,425 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_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2023-11-19 07:34:43,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:34:43,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:34:43,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:34:43,966 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:34:43,966 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:34:43,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-19 07:34:47,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:34:47,646 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:34:47,646 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-19 07:34:47,654 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/data/036ee40a0/9b4f49339b53459ebfabc9d2ba0d560f/FLAG3f7a85c87 [2023-11-19 07:34:47,675 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/data/036ee40a0/9b4f49339b53459ebfabc9d2ba0d560f [2023-11-19 07:34:47,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:34:47,688 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:34:47,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:47,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:34:47,697 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:34:47,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:47" (1/1) ... [2023-11-19 07:34:47,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@101c9ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:47, skipping insertion in model container [2023-11-19 07:34:47,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:47" (1/1) ... [2023-11-19 07:34:47,727 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:34:48,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:48,045 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 07:34:48,061 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:34:48,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:48,105 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:34:48,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:48,175 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:34:48,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48 WrapperNode [2023-11-19 07:34:48,184 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:48,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:48,185 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:34:48,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:34:48,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,207 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,238 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 179 [2023-11-19 07:34:48,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:48,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:34:48,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:34:48,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:34:48,250 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,256 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,267 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,276 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:34:48,282 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:34:48,282 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:34:48,282 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:34:48,283 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (1/1) ... [2023-11-19 07:34:48,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:48,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:48,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:34:48,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:34:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:34:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:34:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:34:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 07:34:48,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:34:48,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:34:48,385 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:34:48,385 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:34:48,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:34:48,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:34:48,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:34:48,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:34:48,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 07:34:48,389 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:34:48,564 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:34:48,567 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:34:49,208 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:34:49,225 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:34:49,225 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 07:34:49,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:49 BoogieIcfgContainer [2023-11-19 07:34:49,231 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:34:49,238 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:34:49,239 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:34:49,242 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:34:49,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:34:47" (1/3) ... [2023-11-19 07:34:49,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c567f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:49, skipping insertion in model container [2023-11-19 07:34:49,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:48" (2/3) ... [2023-11-19 07:34:49,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c567f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:49, skipping insertion in model container [2023-11-19 07:34:49,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:49" (3/3) ... [2023-11-19 07:34:49,247 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2023-11-19 07:34:49,267 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:34:49,268 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-19 07:34:49,269 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:34:49,467 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:34:49,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 247 transitions, 508 flow [2023-11-19 07:34:49,668 INFO L124 PetriNetUnfolderBase]: 19/245 cut-off events. [2023-11-19 07:34:49,669 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:34:49,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 245 events. 19/245 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 379 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 166. Up to 3 conditions per place. [2023-11-19 07:34:49,676 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 247 transitions, 508 flow [2023-11-19 07:34:49,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 240 transitions, 492 flow [2023-11-19 07:34:49,696 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:34:49,710 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 240 transitions, 492 flow [2023-11-19 07:34:49,713 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 240 transitions, 492 flow [2023-11-19 07:34:49,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 240 transitions, 492 flow [2023-11-19 07:34:49,770 INFO L124 PetriNetUnfolderBase]: 19/240 cut-off events. [2023-11-19 07:34:49,770 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:34:49,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 240 events. 19/240 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 372 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 166. Up to 3 conditions per place. [2023-11-19 07:34:49,778 INFO L119 LiptonReduction]: Number of co-enabled transitions 5896 [2023-11-19 07:35:20,309 INFO L134 LiptonReduction]: Checked pairs total: 9025 [2023-11-19 07:35:20,309 INFO L136 LiptonReduction]: Total number of compositions: 274 [2023-11-19 07:35:20,326 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:20,333 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;@7daa1cd0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:20,333 INFO L358 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2023-11-19 07:35:20,336 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:35:20,337 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:35:20,337 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:35:20,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:20,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:35:20,338 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-19 07:35:20,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:20,344 INFO L85 PathProgramCache]: Analyzing trace with hash 30809, now seen corresponding path program 1 times [2023-11-19 07:35:20,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:35:20,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778736546] [2023-11-19 07:35:20,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:20,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:35:20,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:35:20,364 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:35:20,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 07:35:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:20,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:35:20,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:20,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-19 07:35:20,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:20,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:35:20,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:20,612 INFO L378 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 [2023-11-19 07:35:20,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:20,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:35:20,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:20,636 INFO L378 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 [2023-11-19 07:35:20,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:20,656 INFO L378 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 [2023-11-19 07:35:20,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:20,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:20,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:35:20,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778736546] [2023-11-19 07:35:20,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778736546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:20,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:20,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:35:20,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171286901] [2023-11-19 07:35:20,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:20,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:20,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:35:20,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:20,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:21,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 521 [2023-11-19 07:35:21,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 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) [2023-11-19 07:35:21,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:21,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 521 [2023-11-19 07:35:21,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:21,704 INFO L124 PetriNetUnfolderBase]: 841/1344 cut-off events. [2023-11-19 07:35:21,705 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-19 07:35:21,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2718 conditions, 1344 events. 841/1344 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 6464 event pairs, 679 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 2548. Up to 1328 conditions per place. [2023-11-19 07:35:21,724 INFO L140 encePairwiseOnDemand]: 507/521 looper letters, 49 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2023-11-19 07:35:21,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 238 flow [2023-11-19 07:35:21,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:21,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:21,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 708 transitions. [2023-11-19 07:35:21,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45297504798464494 [2023-11-19 07:35:21,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 708 transitions. [2023-11-19 07:35:21,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 708 transitions. [2023-11-19 07:35:21,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:21,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 708 transitions. [2023-11-19 07:35:21,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 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) [2023-11-19 07:35:21,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 521.0) internal successors, (2084), 4 states have internal predecessors, (2084), 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) [2023-11-19 07:35:21,787 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 521.0) internal successors, (2084), 4 states have internal predecessors, (2084), 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) [2023-11-19 07:35:21,789 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 120 flow. Second operand 3 states and 708 transitions. [2023-11-19 07:35:21,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 238 flow [2023-11-19 07:35:21,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 230 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:35:21,796 INFO L231 Difference]: Finished difference. Result has 50 places, 55 transitions, 158 flow [2023-11-19 07:35:21,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=50, PETRI_TRANSITIONS=55} [2023-11-19 07:35:21,802 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -5 predicate places. [2023-11-19 07:35:21,803 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 55 transitions, 158 flow [2023-11-19 07:35:21,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 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) [2023-11-19 07:35:21,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:21,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:35:21,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-19 07:35:22,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:35:22,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-19 07:35:22,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:22,008 INFO L85 PathProgramCache]: Analyzing trace with hash 30810, now seen corresponding path program 1 times [2023-11-19 07:35:22,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:35:22,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172523933] [2023-11-19 07:35:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:22,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:35:22,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:35:22,016 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:35:22,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 07:35:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:22,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:35:22,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:22,106 INFO L378 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 [2023-11-19 07:35:22,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:22,120 INFO L378 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 [2023-11-19 07:35:22,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:22,130 INFO L378 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 [2023-11-19 07:35:22,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:22,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:35:22,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:22,146 INFO L378 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 [2023-11-19 07:35:22,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:22,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:35:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:22,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:22,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:35:22,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172523933] [2023-11-19 07:35:22,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172523933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:22,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:22,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:35:22,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658254825] [2023-11-19 07:35:22,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:22,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:22,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:35:22,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:22,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:22,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 521 [2023-11-19 07:35:22,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 55 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 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) [2023-11-19 07:35:22,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:22,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 521 [2023-11-19 07:35:22,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:22,921 INFO L124 PetriNetUnfolderBase]: 841/1340 cut-off events. [2023-11-19 07:35:22,921 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:35:22,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2709 conditions, 1340 events. 841/1340 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 6428 event pairs, 679 based on Foata normal form. 4/458 useless extension candidates. Maximal degree in co-relation 2653. Up to 1320 conditions per place. [2023-11-19 07:35:22,932 INFO L140 encePairwiseOnDemand]: 515/521 looper letters, 45 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2023-11-19 07:35:22,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 53 transitions, 258 flow [2023-11-19 07:35:22,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2023-11-19 07:35:22,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4510556621880998 [2023-11-19 07:35:22,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2023-11-19 07:35:22,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2023-11-19 07:35:22,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:22,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2023-11-19 07:35:22,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2023-11-19 07:35:22,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 521.0) internal successors, (2084), 4 states have internal predecessors, (2084), 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) [2023-11-19 07:35:22,966 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 521.0) internal successors, (2084), 4 states have internal predecessors, (2084), 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) [2023-11-19 07:35:22,966 INFO L175 Difference]: Start difference. First operand has 50 places, 55 transitions, 158 flow. Second operand 3 states and 705 transitions. [2023-11-19 07:35:22,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 53 transitions, 258 flow [2023-11-19 07:35:22,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 244 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:35:22,969 INFO L231 Difference]: Finished difference. Result has 48 places, 53 transitions, 154 flow [2023-11-19 07:35:22,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=48, PETRI_TRANSITIONS=53} [2023-11-19 07:35:22,970 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -7 predicate places. [2023-11-19 07:35:22,970 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 53 transitions, 154 flow [2023-11-19 07:35:22,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 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) [2023-11-19 07:35:22,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:22,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:35:22,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:23,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:35:23,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-19 07:35:23,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:23,174 INFO L85 PathProgramCache]: Analyzing trace with hash 959197, now seen corresponding path program 1 times [2023-11-19 07:35:23,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:35:23,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800279140] [2023-11-19 07:35:23,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:23,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:35:23,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:35:23,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:35:23,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 07:35:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:23,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:35:23,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:23,275 INFO L378 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 5 [2023-11-19 07:35:23,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:23,290 INFO L378 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 [2023-11-19 07:35:23,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:23,302 INFO L378 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 [2023-11-19 07:35:23,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:23,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:35:23,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:23,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:35:23,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:23,340 INFO L378 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 [2023-11-19 07:35:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:23,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:35:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:23,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:35:23,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800279140] [2023-11-19 07:35:23,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800279140] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:35:23,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:35:23,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-19 07:35:23,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970443709] [2023-11-19 07:35:23,500 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:35:23,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:35:23,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:35:23,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:35:23,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:35:25,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 521 [2023-11-19 07:35:25,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 53 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 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) [2023-11-19 07:35:25,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:25,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 521 [2023-11-19 07:35:25,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:26,783 INFO L124 PetriNetUnfolderBase]: 853/1358 cut-off events. [2023-11-19 07:35:26,783 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:35:26,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2772 conditions, 1358 events. 853/1358 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 6492 event pairs, 679 based on Foata normal form. 0/463 useless extension candidates. Maximal degree in co-relation 2653. Up to 1335 conditions per place. [2023-11-19 07:35:26,794 INFO L140 encePairwiseOnDemand]: 512/521 looper letters, 45 selfloop transitions, 25 changer transitions 0/71 dead transitions. [2023-11-19 07:35:26,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 71 transitions, 384 flow [2023-11-19 07:35:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:35:26,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:35:26,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1342 transitions. [2023-11-19 07:35:26,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4293026231605886 [2023-11-19 07:35:26,801 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1342 transitions. [2023-11-19 07:35:26,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1342 transitions. [2023-11-19 07:35:26,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:26,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1342 transitions. [2023-11-19 07:35:26,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 223.66666666666666) internal successors, (1342), 6 states have internal predecessors, (1342), 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) [2023-11-19 07:35:26,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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) [2023-11-19 07:35:26,818 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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) [2023-11-19 07:35:26,818 INFO L175 Difference]: Start difference. First operand has 48 places, 53 transitions, 154 flow. Second operand 6 states and 1342 transitions. [2023-11-19 07:35:26,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 71 transitions, 384 flow [2023-11-19 07:35:26,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 352 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:35:26,822 INFO L231 Difference]: Finished difference. Result has 54 places, 71 transitions, 308 flow [2023-11-19 07:35:26,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=308, PETRI_PLACES=54, PETRI_TRANSITIONS=71} [2023-11-19 07:35:26,823 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2023-11-19 07:35:26,823 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 71 transitions, 308 flow [2023-11-19 07:35:26,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 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) [2023-11-19 07:35:26,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:26,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:35:26,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:27,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:35:27,036 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-19 07:35:27,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash 960171, now seen corresponding path program 1 times [2023-11-19 07:35:27,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:35:27,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570417093] [2023-11-19 07:35:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:27,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:35:27,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:35:27,042 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:35:27,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 07:35:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:27,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:35:27,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:27,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:27,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:35:27,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570417093] [2023-11-19 07:35:27,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570417093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:27,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:27,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:35:27,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418965205] [2023-11-19 07:35:27,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:27,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:27,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:35:27,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:27,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 521 [2023-11-19 07:35:27,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 71 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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) [2023-11-19 07:35:27,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:27,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 521 [2023-11-19 07:35:27,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:27,819 INFO L124 PetriNetUnfolderBase]: 849/1354 cut-off events. [2023-11-19 07:35:27,819 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:35:27,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2798 conditions, 1354 events. 849/1354 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 6459 event pairs, 679 based on Foata normal form. 2/466 useless extension candidates. Maximal degree in co-relation 2715. Up to 1338 conditions per place. [2023-11-19 07:35:27,828 INFO L140 encePairwiseOnDemand]: 514/521 looper letters, 59 selfloop transitions, 7 changer transitions 0/67 dead transitions. [2023-11-19 07:35:27,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 67 transitions, 418 flow [2023-11-19 07:35:27,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:27,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:27,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 709 transitions. [2023-11-19 07:35:27,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45361484325015994 [2023-11-19 07:35:27,833 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 709 transitions. [2023-11-19 07:35:27,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 709 transitions. [2023-11-19 07:35:27,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:27,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 709 transitions. [2023-11-19 07:35:27,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 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) [2023-11-19 07:35:27,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 521.0) internal successors, (2084), 4 states have internal predecessors, (2084), 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) [2023-11-19 07:35:27,842 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 521.0) internal successors, (2084), 4 states have internal predecessors, (2084), 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) [2023-11-19 07:35:27,842 INFO L175 Difference]: Start difference. First operand has 54 places, 71 transitions, 308 flow. Second operand 3 states and 709 transitions. [2023-11-19 07:35:27,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 67 transitions, 418 flow [2023-11-19 07:35:27,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 381 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:27,847 INFO L231 Difference]: Finished difference. Result has 55 places, 67 transitions, 263 flow [2023-11-19 07:35:27,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=55, PETRI_TRANSITIONS=67} [2023-11-19 07:35:27,848 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2023-11-19 07:35:27,848 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 67 transitions, 263 flow [2023-11-19 07:35:27,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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) [2023-11-19 07:35:27,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:27,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:35:27,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-19 07:35:28,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:35:28,052 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-19 07:35:28,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash 921946394, now seen corresponding path program 1 times [2023-11-19 07:35:28,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:35:28,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992431723] [2023-11-19 07:35:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:28,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:35:28,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:35:28,054 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:35:28,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 07:35:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:28,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:35:28,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:35:28,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:35:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:35:28,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:35:28,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992431723] [2023-11-19 07:35:28,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992431723] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:35:28,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:35:28,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-19 07:35:28,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319215980] [2023-11-19 07:35:28,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:35:28,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:35:28,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:35:28,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:35:28,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:35:28,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 521 [2023-11-19 07:35:28,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 67 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 216.33333333333334) internal successors, (1298), 6 states have internal predecessors, (1298), 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) [2023-11-19 07:35:28,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:28,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 521 [2023-11-19 07:35:28,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:29,253 INFO L124 PetriNetUnfolderBase]: 837/1342 cut-off events. [2023-11-19 07:35:29,253 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-19 07:35:29,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2735 conditions, 1342 events. 837/1342 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 6386 event pairs, 679 based on Foata normal form. 5/466 useless extension candidates. Maximal degree in co-relation 2687. Up to 1321 conditions per place. [2023-11-19 07:35:29,264 INFO L140 encePairwiseOnDemand]: 512/521 looper letters, 42 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2023-11-19 07:35:29,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 55 transitions, 302 flow [2023-11-19 07:35:29,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:35:29,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:35:29,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1356 transitions. [2023-11-19 07:35:29,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43378119001919385 [2023-11-19 07:35:29,270 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1356 transitions. [2023-11-19 07:35:29,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1356 transitions. [2023-11-19 07:35:29,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:29,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1356 transitions. [2023-11-19 07:35:29,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 226.0) internal successors, (1356), 6 states have internal predecessors, (1356), 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) [2023-11-19 07:35:29,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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) [2023-11-19 07:35:29,285 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 521.0) internal successors, (3647), 7 states have internal predecessors, (3647), 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) [2023-11-19 07:35:29,285 INFO L175 Difference]: Start difference. First operand has 55 places, 67 transitions, 263 flow. Second operand 6 states and 1356 transitions. [2023-11-19 07:35:29,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 55 transitions, 302 flow [2023-11-19 07:35:29,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:35:29,289 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 210 flow [2023-11-19 07:35:29,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2023-11-19 07:35:29,290 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-11-19 07:35:29,291 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 210 flow [2023-11-19 07:35:29,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 216.33333333333334) internal successors, (1298), 6 states have internal predecessors, (1298), 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) [2023-11-19 07:35:29,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:29,292 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 07:35:29,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:29,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:35:29,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-19 07:35:29,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:29,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1485244071, now seen corresponding path program 2 times [2023-11-19 07:35:29,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:35:29,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199749154] [2023-11-19 07:35:29,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:35:29,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:35:29,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:35:29,498 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:35:29,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f24feb3e-ab75-4da0-b247-b0484315ab9a/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-19 07:35:29,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:35:29,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:35:29,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:35:29,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:29,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-19 07:35:29,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:29,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:35:29,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:29,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 07:35:29,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:29,675 INFO L378 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 [2023-11-19 07:35:29,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:29,689 INFO L378 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 [2023-11-19 07:35:29,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:35:29,710 INFO L378 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 [2023-11-19 07:35:29,910 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:29,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:35:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:30,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:35:30,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199749154] [2023-11-19 07:35:30,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199749154] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:35:30,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:35:30,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-19 07:35:30,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704390840] [2023-11-19 07:35:30,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:35:30,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:35:30,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:35:30,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:35:30,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132