./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-complex/bounded_buffer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-complex/bounded_buffer.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 16:38:56,410 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 16:38:56,445 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-22 16:38:56,455 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 16:38:56,455 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 16:38:56,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 16:38:56,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 16:38:56,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 16:38:56,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 16:38:56,492 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 16:38:56,493 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 16:38:56,493 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 16:38:56,493 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 16:38:56,494 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 16:38:56,494 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 16:38:56,495 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 16:38:56,495 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 16:38:56,495 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 16:38:56,495 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-22 16:38:56,496 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-22 16:38:56,496 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-22 16:38:56,497 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 16:38:56,497 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-22 16:38:56,497 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-22 16:38:56,497 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 16:38:56,498 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 16:38:56,498 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 16:38:56,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 16:38:56,498 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 16:38:56,499 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 16:38:56,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 16:38:56,500 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 16:38:56,500 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 16:38:56,500 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 16:38:56,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 16:38:56,500 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 16:38:56,500 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 16:38:56,501 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 16:38:56,501 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 16:38:56,501 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 [2023-11-22 16:38:56,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 16:38:56,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 16:38:56,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 16:38:56,756 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 16:38:56,756 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 16:38:56,757 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-complex/bounded_buffer.i [2023-11-22 16:38:57,823 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 16:38:58,109 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 16:38:58,112 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/bounded_buffer.i [2023-11-22 16:38:58,136 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc03ee357/5c86e92e481f4c75820a8384deae9d24/FLAG714c81b92 [2023-11-22 16:38:58,147 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc03ee357/5c86e92e481f4c75820a8384deae9d24 [2023-11-22 16:38:58,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 16:38:58,151 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 16:38:58,153 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 16:38:58,153 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 16:38:58,157 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 16:38:58,157 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:38:58" (1/1) ... [2023-11-22 16:38:58,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@666f45c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:38:58, skipping insertion in model container [2023-11-22 16:38:58,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:38:58" (1/1) ... [2023-11-22 16:38:58,204 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 16:38:58,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 16:38:58,770 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) [2023-11-22 16:38:58,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c0ed41f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:38:58, skipping insertion in model container [2023-11-22 16:38:58,770 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 16:38:58,771 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-22 16:38:58,772 INFO L158 Benchmark]: Toolchain (without parser) took 620.39ms. Allocated memory is still 138.4MB. Free memory was 80.6MB in the beginning and 60.3MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-22 16:38:58,773 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-22 16:38:58,774 INFO L158 Benchmark]: CACSL2BoogieTranslator took 617.53ms. Allocated memory is still 138.4MB. Free memory was 80.3MB in the beginning and 60.3MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-22 16:38:58,775 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 617.53ms. Allocated memory is still 138.4MB. Free memory was 80.3MB in the beginning and 60.3MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1514]: 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: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-complex/bounded_buffer.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 16:39:00,663 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 16:39:00,720 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-22 16:39:00,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 16:39:00,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 16:39:00,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 16:39:00,770 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 16:39:00,770 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 16:39:00,771 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 16:39:00,771 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 16:39:00,771 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 16:39:00,772 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 16:39:00,772 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 16:39:00,772 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 16:39:00,772 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 16:39:00,773 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 16:39:00,773 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 16:39:00,773 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 16:39:00,774 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-22 16:39:00,774 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-22 16:39:00,778 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-22 16:39:00,779 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 16:39:00,779 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-22 16:39:00,779 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-22 16:39:00,779 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-22 16:39:00,780 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-22 16:39:00,780 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 16:39:00,780 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 16:39:00,780 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 16:39:00,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 16:39:00,781 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 16:39:00,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 16:39:00,781 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 16:39:00,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 16:39:00,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 16:39:00,782 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-22 16:39:00,782 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-22 16:39:00,783 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 16:39:00,784 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 16:39:00,784 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 16:39:00,784 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 16:39:00,785 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-22 16:39:00,785 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 [2023-11-22 16:39:01,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 16:39:01,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 16:39:01,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 16:39:01,072 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 16:39:01,072 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 16:39:01,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-complex/bounded_buffer.i [2023-11-22 16:39:02,239 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 16:39:02,538 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 16:39:02,539 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/bounded_buffer.i [2023-11-22 16:39:02,564 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b305a0c38/ef89f89df23e4b22bb4cbbe1d849abca/FLAGedb260aff [2023-11-22 16:39:02,578 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b305a0c38/ef89f89df23e4b22bb4cbbe1d849abca [2023-11-22 16:39:02,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 16:39:02,584 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 16:39:02,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 16:39:02,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 16:39:02,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 16:39:02,594 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:39:02" (1/1) ... [2023-11-22 16:39:02,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f13483f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:39:02, skipping insertion in model container [2023-11-22 16:39:02,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:39:02" (1/1) ... [2023-11-22 16:39:02,649 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 16:39:03,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 16:39:03,214 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-22 16:39:03,223 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 16:39:03,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 16:39:03,293 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 16:39:03,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 16:39:03,435 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-22 16:39:03,441 INFO L206 MainTranslator]: Completed translation [2023-11-22 16:39:03,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:39:03 WrapperNode [2023-11-22 16:39:03,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 16:39:03,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 16:39:03,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 16:39:03,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 16:39:03,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:39:03" (1/1) ... [2023-11-22 16:39:03,482 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:39:03" (1/1) ... [2023-11-22 16:39:03,531 INFO L138 Inliner]: procedures = 432, calls = 137, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 485 [2023-11-22 16:39:03,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 16:39:03,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 16:39:03,537 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 16:39:03,537 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 16:39:03,544 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:39:03" (1/1) ... [2023-11-22 16:39:03,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:39:03" (1/1) ... [2023-11-22 16:39:03,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:39:03" (1/1) ... [2023-11-22 16:39:03,561 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:39:03" (1/1) ... [2023-11-22 16:39:03,572 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:39:03" (1/1) ... [2023-11-22 16:39:03,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:39:03" (1/1) ... [2023-11-22 16:39:03,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:39:03" (1/1) ... [2023-11-22 16:39:03,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:39:03" (1/1) ... [2023-11-22 16:39:03,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 16:39:03,608 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 16:39:03,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 16:39:03,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 16:39:03,609 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:39:03" (1/1) ... [2023-11-22 16:39:03,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 16:39:03,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 16:39:03,639 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 16:39:03,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 16:39:03,678 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2023-11-22 16:39:03,678 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2023-11-22 16:39:03,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 16:39:03,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-22 16:39:03,678 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-22 16:39:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-22 16:39:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-22 16:39:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 16:39:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-22 16:39:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 16:39:03,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 16:39:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-22 16:39:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 16:39:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-22 16:39:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2023-11-22 16:39:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2023-11-22 16:39:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-22 16:39:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-22 16:39:03,681 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-22 16:39:03,815 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 16:39:03,816 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 16:39:05,173 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 16:39:05,451 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 16:39:05,451 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-22 16:39:05,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:39:05 BoogieIcfgContainer [2023-11-22 16:39:05,453 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 16:39:05,455 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 16:39:05,455 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 16:39:05,457 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 16:39:05,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:39:02" (1/3) ... [2023-11-22 16:39:05,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abc6445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:39:05, skipping insertion in model container [2023-11-22 16:39:05,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:39:03" (2/3) ... [2023-11-22 16:39:05,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abc6445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:39:05, skipping insertion in model container [2023-11-22 16:39:05,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:39:05" (3/3) ... [2023-11-22 16:39:05,462 INFO L112 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2023-11-22 16:39:05,477 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 16:39:05,477 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 164 error locations. [2023-11-22 16:39:05,478 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-22 16:39:05,624 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-22 16:39:05,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 374 transitions, 768 flow [2023-11-22 16:39:05,873 INFO L124 PetriNetUnfolderBase]: 90/859 cut-off events. [2023-11-22 16:39:05,873 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-22 16:39:05,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 876 conditions, 859 events. 90/859 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6244 event pairs, 0 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 449. Up to 16 conditions per place. [2023-11-22 16:39:05,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 338 places, 374 transitions, 768 flow [2023-11-22 16:39:05,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 338 places, 374 transitions, 768 flow [2023-11-22 16:39:05,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 16:39:05,914 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;@780e5827, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 16:39:05,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 247 error locations. [2023-11-22 16:39:05,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-22 16:39:05,916 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-22 16:39:05,916 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-22 16:39:05,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 16:39:05,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-22 16:39:05,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [consumer_routineErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, consumer_routineErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, consumer_routineErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 244 more)] === [2023-11-22 16:39:05,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 16:39:05,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1424561, now seen corresponding path program 1 times [2023-11-22 16:39:05,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-22 16:39:05,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671460257] [2023-11-22 16:39:05,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 16:39:05,930 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 [2023-11-22 16:39:05,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-22 16:39:05,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2023-11-22 16:39:05,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2023-11-22 16:39:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 16:39:06,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 16:39:06,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 16:39:06,085 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 7 [2023-11-22 16:39:06,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 16:39:06,106 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 [2023-11-22 16:39:06,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 16:39:06,125 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 [2023-11-22 16:39:06,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 16:39:06,134 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 [2023-11-22 16:39:06,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 16:39:06,153 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 [2023-11-22 16:39:06,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 16:39:06,165 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 [2023-11-22 16:39:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 16:39:06,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 16:39:06,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-22 16:39:06,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671460257] [2023-11-22 16:39:06,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671460257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 16:39:06,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 16:39:06,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-22 16:39:06,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799638395] [2023-11-22 16:39:06,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 16:39:06,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 16:39:06,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-22 16:39:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 16:39:06,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 16:39:06,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 374 [2023-11-22 16:39:06,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 374 transitions, 768 flow. Second operand has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 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) [2023-11-22 16:39:06,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 16:39:06,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 374 [2023-11-22 16:39:06,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 16:39:16,795 INFO L124 PetriNetUnfolderBase]: 56669/126981 cut-off events. [2023-11-22 16:39:16,795 INFO L125 PetriNetUnfolderBase]: For 314/318 co-relation queries the response was YES. [2023-11-22 16:39:17,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200719 conditions, 126981 events. 56669/126981 cut-off events. For 314/318 co-relation queries the response was YES. Maximal size of possible extension queue 3175. Compared 1565974 event pairs, 35591 based on Foata normal form. 5538/87290 useless extension candidates. Maximal degree in co-relation 193859. Up to 73561 conditions per place. [2023-11-22 16:39:17,709 INFO L140 encePairwiseOnDemand]: 354/374 looper letters, 122 selfloop transitions, 2 changer transitions 0/355 dead transitions. [2023-11-22 16:39:17,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 355 transitions, 978 flow [2023-11-22 16:39:17,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 16:39:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-22 16:39:17,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 835 transitions. [2023-11-22 16:39:17,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7442067736185384 [2023-11-22 16:39:17,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 835 transitions. [2023-11-22 16:39:17,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 835 transitions. [2023-11-22 16:39:17,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 16:39:17,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 835 transitions. [2023-11-22 16:39:17,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 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) [2023-11-22 16:39:17,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2023-11-22 16:39:17,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2023-11-22 16:39:17,746 INFO L175 Difference]: Start difference. First operand has 338 places, 374 transitions, 768 flow. Second operand 3 states and 835 transitions. [2023-11-22 16:39:17,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 355 transitions, 978 flow [2023-11-22 16:39:17,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 355 transitions, 978 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-22 16:39:17,760 INFO L231 Difference]: Finished difference. Result has 328 places, 355 transitions, 734 flow [2023-11-22 16:39:17,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=734, PETRI_PLACES=328, PETRI_TRANSITIONS=355} [2023-11-22 16:39:17,765 INFO L281 CegarLoopForPetriNet]: 338 programPoint places, -10 predicate places. [2023-11-22 16:39:17,765 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 355 transitions, 734 flow [2023-11-22 16:39:17,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 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) [2023-11-22 16:39:17,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 16:39:17,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-22 16:39:17,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-22 16:39:17,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-22 16:39:17,969 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [consumer_routineErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, consumer_routineErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, consumer_routineErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 244 more)] === [2023-11-22 16:39:17,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 16:39:17,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1424562, now seen corresponding path program 1 times [2023-11-22 16:39:17,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-22 16:39:17,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921352728] [2023-11-22 16:39:17,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 16:39:17,973 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 [2023-11-22 16:39:17,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-22 16:39:17,975 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2023-11-22 16:39:17,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2023-11-22 16:39:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 16:39:18,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 16:39:18,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 16:39:18,143 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 [2023-11-22 16:39:18,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 16:39:18,155 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 [2023-11-22 16:39:18,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 16:39:18,176 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 [2023-11-22 16:39:18,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 16:39:18,183 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 [2023-11-22 16:39:18,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 16:39:18,202 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 [2023-11-22 16:39:18,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 16:39:18,208 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 [2023-11-22 16:39:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 16:39:18,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 16:39:18,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-22 16:39:18,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921352728] [2023-11-22 16:39:18,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921352728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 16:39:18,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 16:39:18,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-22 16:39:18,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920832286] [2023-11-22 16:39:18,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 16:39:18,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 16:39:18,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-22 16:39:18,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 16:39:18,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 16:39:18,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 374 [2023-11-22 16:39:18,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 355 transitions, 734 flow. Second operand has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 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) [2023-11-22 16:39:18,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 16:39:18,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 374 [2023-11-22 16:39:18,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-22 16:39:28,720 INFO L124 PetriNetUnfolderBase]: 56669/126970 cut-off events. [2023-11-22 16:39:28,720 INFO L125 PetriNetUnfolderBase]: For 310/314 co-relation queries the response was YES. [2023-11-22 16:39:29,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200703 conditions, 126970 events. 56669/126970 cut-off events. For 310/314 co-relation queries the response was YES. Maximal size of possible extension queue 3168. Compared 1565809 event pairs, 35591 based on Foata normal form. 8/81749 useless extension candidates. Maximal degree in co-relation 200660. Up to 73561 conditions per place. [2023-11-22 16:39:29,529 INFO L140 encePairwiseOnDemand]: 361/374 looper letters, 114 selfloop transitions, 2 changer transitions 0/344 dead transitions. [2023-11-22 16:39:29,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 344 transitions, 944 flow [2023-11-22 16:39:29,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 16:39:29,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-22 16:39:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 844 transitions. [2023-11-22 16:39:29,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7522281639928698 [2023-11-22 16:39:29,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 844 transitions. [2023-11-22 16:39:29,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 844 transitions. [2023-11-22 16:39:29,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-22 16:39:29,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 844 transitions. [2023-11-22 16:39:29,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 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) [2023-11-22 16:39:29,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2023-11-22 16:39:29,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 374.0) internal successors, (1496), 4 states have internal predecessors, (1496), 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) [2023-11-22 16:39:29,537 INFO L175 Difference]: Start difference. First operand has 328 places, 355 transitions, 734 flow. Second operand 3 states and 844 transitions. [2023-11-22 16:39:29,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 344 transitions, 944 flow [2023-11-22 16:39:29,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 344 transitions, 940 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-22 16:39:29,543 INFO L231 Difference]: Finished difference. Result has 317 places, 344 transitions, 712 flow [2023-11-22 16:39:29,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=374, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=712, PETRI_PLACES=317, PETRI_TRANSITIONS=344} [2023-11-22 16:39:29,552 INFO L281 CegarLoopForPetriNet]: 338 programPoint places, -21 predicate places. [2023-11-22 16:39:29,553 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 344 transitions, 712 flow [2023-11-22 16:39:29,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 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) [2023-11-22 16:39:29,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-22 16:39:29,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-22 16:39:29,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2023-11-22 16:39:29,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-22 16:39:29,917 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [consumer_routineErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, consumer_routineErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, consumer_routineErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 244 more)] === [2023-11-22 16:39:29,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 16:39:29,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1369099069, now seen corresponding path program 1 times [2023-11-22 16:39:29,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-22 16:39:29,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555899125] [2023-11-22 16:39:29,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 16:39:29,918 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 [2023-11-22 16:39:29,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-22 16:39:29,919 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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) [2023-11-22 16:39:29,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 [2023-11-22 16:39:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 16:39:29,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-22 16:39:29,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 16:39:29,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 16:39:29,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 16:39:29,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-22 16:39:29,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555899125] [2023-11-22 16:39:29,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555899125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 16:39:29,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 16:39:29,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 16:39:29,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856224141] [2023-11-22 16:39:29,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 16:39:29,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 16:39:29,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-22 16:39:29,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 16:39:29,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 16:39:30,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 374 [2023-11-22 16:39:30,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 344 transitions, 712 flow. Second operand has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 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) [2023-11-22 16:39:30,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-22 16:39:30,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 374 [2023-11-22 16:39:30,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand