./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:57:42,509 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:57:42,579 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:57:42,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:57:42,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:57:42,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:57:42,631 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:57:42,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:57:42,632 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:57:42,633 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:57:42,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:57:42,633 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:57:42,634 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:57:42,634 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:57:42,635 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:57:42,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:57:42,635 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:57:42,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:57:42,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:57:42,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:57:42,637 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:57:42,641 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:57:42,642 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:57:42,642 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:57:42,642 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:57:42,642 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:57:42,642 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:57:42,643 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:57:42,643 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:57:42,643 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:57:42,643 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:57:42,643 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:57:42,644 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:57:42,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:57:42,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:57:42,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:57:42,645 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:57:42,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:57:42,645 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:57:42,647 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:57:42,647 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:57:42,647 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:57:42,648 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d [2024-10-11 19:57:42,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:57:42,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:57:42,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:57:42,939 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:57:42,939 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:57:42,941 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2024-10-11 19:57:44,362 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:57:44,553 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:57:44,554 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2024-10-11 19:57:44,561 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f31b790f1/502d443ea98f4bafae9c694df9465bb7/FLAGbf89983d4 [2024-10-11 19:57:44,573 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f31b790f1/502d443ea98f4bafae9c694df9465bb7 [2024-10-11 19:57:44,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:57:44,576 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:57:44,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:57:44,577 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:57:44,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:57:44,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:57:44" (1/1) ... [2024-10-11 19:57:44,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@125153d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:44, skipping insertion in model container [2024-10-11 19:57:44,584 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:57:44" (1/1) ... [2024-10-11 19:57:44,609 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:57:44,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:57:44,833 ERROR L321 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) [2024-10-11 19:57:44,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@27790e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:44, skipping insertion in model container [2024-10-11 19:57:44,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:57:44,834 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:57:44,836 INFO L158 Benchmark]: Toolchain (without parser) took 259.09ms. Allocated memory is still 159.4MB. Free memory was 110.5MB in the beginning and 98.7MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:57:44,836 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 100.7MB. Free memory is still 65.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:57:44,837 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.22ms. Allocated memory is still 159.4MB. Free memory was 110.5MB in the beginning and 98.7MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:57:44,838 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 100.7MB. Free memory is still 65.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.22ms. Allocated memory is still 159.4MB. Free memory was 110.5MB in the beginning and 98.7MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 136]: 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-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:57:46,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:57:46,915 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:57:46,919 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:57:46,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:57:46,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:57:46,964 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:57:46,964 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:57:46,965 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:57:46,965 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:57:46,965 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:57:46,966 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:57:46,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:57:46,966 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:57:46,967 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:57:46,967 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:57:46,967 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:57:46,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:57:46,971 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:57:46,971 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:57:46,974 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:57:46,974 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:57:46,974 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:57:46,975 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:57:46,975 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:57:46,975 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:57:46,977 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:57:46,977 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:57:46,977 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:57:46,977 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:57:46,978 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:57:46,978 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:57:46,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:57:46,978 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:57:46,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:57:46,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:57:46,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:57:46,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:57:46,989 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:57:46,990 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:57:46,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:57:46,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:57:46,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:57:46,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:57:46,992 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:57:46,992 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb2af5016fd0ad74653237fbc44a2b3541e4ff971325e3807dab6f19c05af6d [2024-10-11 19:57:47,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:57:47,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:57:47,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:57:47,331 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:57:47,333 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:57:47,335 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2024-10-11 19:57:48,905 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:57:49,084 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:57:49,084 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-horseshoe.wvr.c [2024-10-11 19:57:49,091 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/54a39d6d5/f2071e11f4c94309942ffa9e14a2e2fb/FLAGc1a950cbc [2024-10-11 19:57:49,467 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/54a39d6d5/f2071e11f4c94309942ffa9e14a2e2fb [2024-10-11 19:57:49,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:57:49,470 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:57:49,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:57:49,471 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:57:49,477 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:57:49,478 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:57:49" (1/1) ... [2024-10-11 19:57:49,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56650595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:49, skipping insertion in model container [2024-10-11 19:57:49,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:57:49" (1/1) ... [2024-10-11 19:57:49,503 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:57:49,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:57:49,788 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:57:49,793 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:57:49,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:57:49,835 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:57:49,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:57:49,895 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:57:49,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:49 WrapperNode [2024-10-11 19:57:49,897 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:57:49,898 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:57:49,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:57:49,898 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:57:49,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:49" (1/1) ... [2024-10-11 19:57:49,922 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:49" (1/1) ... [2024-10-11 19:57:49,958 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 234 [2024-10-11 19:57:49,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:57:49,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:57:49,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:57:49,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:57:49,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:49" (1/1) ... [2024-10-11 19:57:49,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:49" (1/1) ... [2024-10-11 19:57:49,977 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:49" (1/1) ... [2024-10-11 19:57:50,005 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-11 19:57:50,005 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:49" (1/1) ... [2024-10-11 19:57:50,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:49" (1/1) ... [2024-10-11 19:57:50,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:49" (1/1) ... [2024-10-11 19:57:50,026 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:49" (1/1) ... [2024-10-11 19:57:50,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:49" (1/1) ... [2024-10-11 19:57:50,034 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:49" (1/1) ... [2024-10-11 19:57:50,037 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:57:50,037 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:57:50,038 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:57:50,038 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:57:50,038 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:49" (1/1) ... [2024-10-11 19:57:50,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:57:50,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:57:50,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:57:50,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:57:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:57:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:57:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:57:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:57:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:57:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:57:50,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:57:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:57:50,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:57:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 19:57:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 19:57:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:57:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:57:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:57:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:57:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:57:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:57:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:57:50,150 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:57:50,267 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:57:50,269 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:57:50,756 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:57:50,756 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:57:51,132 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:57:51,132 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-11 19:57:51,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:57:51 BoogieIcfgContainer [2024-10-11 19:57:51,133 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:57:51,135 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:57:51,135 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:57:51,138 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:57:51,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:57:49" (1/3) ... [2024-10-11 19:57:51,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679364c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:57:51, skipping insertion in model container [2024-10-11 19:57:51,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:57:49" (2/3) ... [2024-10-11 19:57:51,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679364c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:57:51, skipping insertion in model container [2024-10-11 19:57:51,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:57:51" (3/3) ... [2024-10-11 19:57:51,143 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-horseshoe.wvr.c [2024-10-11 19:57:51,161 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:57:51,161 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-11 19:57:51,161 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:57:51,221 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 19:57:51,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 62 transitions, 145 flow [2024-10-11 19:57:51,291 INFO L124 PetriNetUnfolderBase]: 7/59 cut-off events. [2024-10-11 19:57:51,292 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 19:57:51,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 7/59 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 145 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-10-11 19:57:51,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 62 transitions, 145 flow [2024-10-11 19:57:51,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 58 transitions, 134 flow [2024-10-11 19:57:51,314 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:57:51,321 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@11c5b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:57:51,322 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-11 19:57:51,344 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:57:51,344 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:57:51,344 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:57:51,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:51,345 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:57:51,346 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-10-11 19:57:51,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:51,351 INFO L85 PathProgramCache]: Analyzing trace with hash 725080, now seen corresponding path program 1 times [2024-10-11 19:57:51,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:57:51,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796162125] [2024-10-11 19:57:51,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:51,364 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 [2024-10-11 19:57:51,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:57:51,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/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) [2024-10-11 19:57:51,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 19:57:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:51,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:57:51,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:51,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:57:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:51,531 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:57:51,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:57:51,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796162125] [2024-10-11 19:57:51,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796162125] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:51,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:51,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:57:51,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146188669] [2024-10-11 19:57:51,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:51,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:57:51,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:57:51,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:57:51,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:57:51,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-10-11 19:57:51,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-11 19:57:51,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:51,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-10-11 19:57:51,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:52,392 INFO L124 PetriNetUnfolderBase]: 3051/4841 cut-off events. [2024-10-11 19:57:52,392 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-10-11 19:57:52,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9317 conditions, 4841 events. 3051/4841 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 30924 event pairs, 2731 based on Foata normal form. 337/3298 useless extension candidates. Maximal degree in co-relation 8910. Up to 4203 conditions per place. [2024-10-11 19:57:52,459 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 38 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-10-11 19:57:52,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 202 flow [2024-10-11 19:57:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:57:52,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:57:52,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-10-11 19:57:52,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 19:57:52,475 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 134 flow. Second operand 3 states and 93 transitions. [2024-10-11 19:57:52,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 202 flow [2024-10-11 19:57:52,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 190 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 19:57:52,490 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 114 flow [2024-10-11 19:57:52,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2024-10-11 19:57:52,496 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -8 predicate places. [2024-10-11 19:57:52,496 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 114 flow [2024-10-11 19:57:52,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-11 19:57:52,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:52,497 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:57:52,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 19:57:52,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/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 [2024-10-11 19:57:52,698 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-10-11 19:57:52,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:52,699 INFO L85 PathProgramCache]: Analyzing trace with hash 725081, now seen corresponding path program 1 times [2024-10-11 19:57:52,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:57:52,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732026896] [2024-10-11 19:57:52,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:52,700 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 [2024-10-11 19:57:52,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:57:52,703 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/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) [2024-10-11 19:57:52,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 19:57:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:52,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:57:52,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:52,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:57:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:52,865 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:57:52,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:57:52,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732026896] [2024-10-11 19:57:52,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732026896] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:52,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:52,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:57:52,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227664224] [2024-10-11 19:57:52,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:52,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:57:52,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:57:52,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:57:52,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:57:52,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-10-11 19:57:52,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-10-11 19:57:52,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:52,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-10-11 19:57:52,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:53,790 INFO L124 PetriNetUnfolderBase]: 3053/4847 cut-off events. [2024-10-11 19:57:53,791 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-11 19:57:53,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9170 conditions, 4847 events. 3053/4847 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 30989 event pairs, 2731 based on Foata normal form. 0/2965 useless extension candidates. Maximal degree in co-relation 9134. Up to 4212 conditions per place. [2024-10-11 19:57:53,831 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 41 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-10-11 19:57:53,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 224 flow [2024-10-11 19:57:53,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:57:53,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:57:53,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-10-11 19:57:53,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4596774193548387 [2024-10-11 19:57:53,861 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 114 flow. Second operand 4 states and 114 transitions. [2024-10-11 19:57:53,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 224 flow [2024-10-11 19:57:53,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:57:53,865 INFO L231 Difference]: Finished difference. Result has 57 places, 58 transitions, 166 flow [2024-10-11 19:57:53,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=57, PETRI_TRANSITIONS=58} [2024-10-11 19:57:53,867 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-10-11 19:57:53,868 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 58 transitions, 166 flow [2024-10-11 19:57:53,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-10-11 19:57:53,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:53,869 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:57:53,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 19:57:54,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/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 [2024-10-11 19:57:54,070 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-10-11 19:57:54,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash 696825431, now seen corresponding path program 1 times [2024-10-11 19:57:54,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:57:54,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187017655] [2024-10-11 19:57:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:54,072 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:57:54,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:57:54,074 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/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) [2024-10-11 19:57:54,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 [2024-10-11 19:57:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:54,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:57:54,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:54,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:57:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:54,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:54,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:57:54,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187017655] [2024-10-11 19:57:54,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187017655] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:54,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:57:54,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:57:54,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143612383] [2024-10-11 19:57:54,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:54,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:57:54,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:57:54,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:57:54,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:57:54,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-10-11 19:57:54,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 58 transitions, 166 flow. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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) [2024-10-11 19:57:54,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:54,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-10-11 19:57:54,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:56,184 INFO L124 PetriNetUnfolderBase]: 3059/4865 cut-off events. [2024-10-11 19:57:56,185 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-10-11 19:57:56,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9248 conditions, 4865 events. 3059/4865 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 31149 event pairs, 2731 based on Foata normal form. 0/2981 useless extension candidates. Maximal degree in co-relation 9145. Up to 4215 conditions per place. [2024-10-11 19:57:56,232 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 41 selfloop transitions, 25 changer transitions 0/76 dead transitions. [2024-10-11 19:57:56,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 76 transitions, 376 flow [2024-10-11 19:57:56,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:57:56,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:57:56,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 232 transitions. [2024-10-11 19:57:56,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-10-11 19:57:56,238 INFO L175 Difference]: Start difference. First operand has 57 places, 58 transitions, 166 flow. Second operand 10 states and 232 transitions. [2024-10-11 19:57:56,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 76 transitions, 376 flow [2024-10-11 19:57:56,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:57:56,242 INFO L231 Difference]: Finished difference. Result has 69 places, 76 transitions, 328 flow [2024-10-11 19:57:56,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=328, PETRI_PLACES=69, PETRI_TRANSITIONS=76} [2024-10-11 19:57:56,243 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 8 predicate places. [2024-10-11 19:57:56,244 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 76 transitions, 328 flow [2024-10-11 19:57:56,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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) [2024-10-11 19:57:56,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:56,245 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:56,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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)] Ended with exit code 0 [2024-10-11 19:57:56,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/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 [2024-10-11 19:57:56,446 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-10-11 19:57:56,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:56,448 INFO L85 PathProgramCache]: Analyzing trace with hash -352649533, now seen corresponding path program 1 times [2024-10-11 19:57:56,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:57:56,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549242345] [2024-10-11 19:57:56,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:56,450 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 [2024-10-11 19:57:56,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:57:56,454 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/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) [2024-10-11 19:57:56,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (5)] Waiting until timeout for monitored process [2024-10-11 19:57:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:56,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:57:56,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:56,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:56,586 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:57:56,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:57:56,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549242345] [2024-10-11 19:57:56,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549242345] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:56,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:56,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:57:56,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008747630] [2024-10-11 19:57:56,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:56,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:57:56,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:57:56,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:57:56,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:57:56,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-10-11 19:57:56,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 76 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2024-10-11 19:57:56,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:56,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-10-11 19:57:56,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:57,340 INFO L124 PetriNetUnfolderBase]: 3196/5126 cut-off events. [2024-10-11 19:57:57,340 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-10-11 19:57:57,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9835 conditions, 5126 events. 3196/5126 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 32800 event pairs, 2858 based on Foata normal form. 98/3393 useless extension candidates. Maximal degree in co-relation 9747. Up to 4230 conditions per place. [2024-10-11 19:57:57,377 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 89 selfloop transitions, 3 changer transitions 1/105 dead transitions. [2024-10-11 19:57:57,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 105 transitions, 647 flow [2024-10-11 19:57:57,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:57:57,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:57:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-10-11 19:57:57,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5685483870967742 [2024-10-11 19:57:57,380 INFO L175 Difference]: Start difference. First operand has 69 places, 76 transitions, 328 flow. Second operand 4 states and 141 transitions. [2024-10-11 19:57:57,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 105 transitions, 647 flow [2024-10-11 19:57:57,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 105 transitions, 553 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-10-11 19:57:57,385 INFO L231 Difference]: Finished difference. Result has 69 places, 76 transitions, 289 flow [2024-10-11 19:57:57,385 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=69, PETRI_TRANSITIONS=76} [2024-10-11 19:57:57,386 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 8 predicate places. [2024-10-11 19:57:57,386 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 76 transitions, 289 flow [2024-10-11 19:57:57,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2024-10-11 19:57:57,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:57,386 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:57,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (5)] Forceful destruction successful, exit code 0 [2024-10-11 19:57:57,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/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 [2024-10-11 19:57:57,592 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-10-11 19:57:57,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:57,592 INFO L85 PathProgramCache]: Analyzing trace with hash 823752129, now seen corresponding path program 1 times [2024-10-11 19:57:57,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:57:57,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824664238] [2024-10-11 19:57:57,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:57,593 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 [2024-10-11 19:57:57,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:57:57,596 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/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) [2024-10-11 19:57:57,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (6)] Waiting until timeout for monitored process [2024-10-11 19:57:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:57,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 19:57:57,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:57,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:57:57,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:57:57,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:57:57,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:57:57,874 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:57:57,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:57:57,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:57,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:58,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:57:58,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824664238] [2024-10-11 19:57:58,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824664238] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:58,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:57:58,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:57:58,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960187156] [2024-10-11 19:57:58,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:58,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:57:58,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:57:58,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:57:58,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:57:59,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-10-11 19:57:59,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 76 transitions, 289 flow. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2024-10-11 19:57:59,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:59,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-10-11 19:57:59,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:04,466 INFO L124 PetriNetUnfolderBase]: 7560/12070 cut-off events. [2024-10-11 19:58:04,467 INFO L125 PetriNetUnfolderBase]: For 1150/1150 co-relation queries the response was YES. [2024-10-11 19:58:04,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25570 conditions, 12070 events. 7560/12070 cut-off events. For 1150/1150 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 85494 event pairs, 6710 based on Foata normal form. 0/8085 useless extension candidates. Maximal degree in co-relation 25016. Up to 4215 conditions per place. [2024-10-11 19:58:04,540 INFO L140 encePairwiseOnDemand]: 52/62 looper letters, 117 selfloop transitions, 46 changer transitions 0/173 dead transitions. [2024-10-11 19:58:04,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 173 transitions, 960 flow [2024-10-11 19:58:04,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 19:58:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 19:58:04,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 333 transitions. [2024-10-11 19:58:04,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3836405529953917 [2024-10-11 19:58:04,544 INFO L175 Difference]: Start difference. First operand has 69 places, 76 transitions, 289 flow. Second operand 14 states and 333 transitions. [2024-10-11 19:58:04,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 173 transitions, 960 flow [2024-10-11 19:58:04,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 173 transitions, 956 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 19:58:04,552 INFO L231 Difference]: Finished difference. Result has 88 places, 102 transitions, 598 flow [2024-10-11 19:58:04,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=598, PETRI_PLACES=88, PETRI_TRANSITIONS=102} [2024-10-11 19:58:04,553 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 27 predicate places. [2024-10-11 19:58:04,553 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 102 transitions, 598 flow [2024-10-11 19:58:04,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2024-10-11 19:58:04,554 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:04,554 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:04,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (6)] Ended with exit code 0 [2024-10-11 19:58:04,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/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 [2024-10-11 19:58:04,755 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-10-11 19:58:04,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:04,755 INFO L85 PathProgramCache]: Analyzing trace with hash 823752128, now seen corresponding path program 1 times [2024-10-11 19:58:04,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:04,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343729278] [2024-10-11 19:58:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:04,756 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 [2024-10-11 19:58:04,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:04,757 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/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) [2024-10-11 19:58:04,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (7)] Waiting until timeout for monitored process [2024-10-11 19:58:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:04,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:58:04,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:04,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:58:04,861 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-11 19:58:04,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-11 19:58:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:58:04,899 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:04,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:04,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343729278] [2024-10-11 19:58:04,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343729278] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:04,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:04,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:58:04,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200794869] [2024-10-11 19:58:04,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:04,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:58:04,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:04,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:58:04,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:58:04,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-10-11 19:58:04,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 102 transitions, 598 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-10-11 19:58:04,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:04,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-10-11 19:58:04,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:05,798 INFO L124 PetriNetUnfolderBase]: 5213/8365 cut-off events. [2024-10-11 19:58:05,798 INFO L125 PetriNetUnfolderBase]: For 2971/2971 co-relation queries the response was YES. [2024-10-11 19:58:05,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18054 conditions, 8365 events. 5213/8365 cut-off events. For 2971/2971 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 55647 event pairs, 4551 based on Foata normal form. 0/6457 useless extension candidates. Maximal degree in co-relation 17961. Up to 7243 conditions per place. [2024-10-11 19:58:05,862 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 72 selfloop transitions, 15 changer transitions 0/99 dead transitions. [2024-10-11 19:58:05,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 99 transitions, 760 flow [2024-10-11 19:58:05,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:58:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:58:05,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-10-11 19:58:05,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-10-11 19:58:05,864 INFO L175 Difference]: Start difference. First operand has 88 places, 102 transitions, 598 flow. Second operand 5 states and 120 transitions. [2024-10-11 19:58:05,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 99 transitions, 760 flow [2024-10-11 19:58:05,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 99 transitions, 744 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:58:05,873 INFO L231 Difference]: Finished difference. Result has 87 places, 99 transitions, 600 flow [2024-10-11 19:58:05,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=600, PETRI_PLACES=87, PETRI_TRANSITIONS=99} [2024-10-11 19:58:05,876 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 26 predicate places. [2024-10-11 19:58:05,876 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 99 transitions, 600 flow [2024-10-11 19:58:05,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-10-11 19:58:05,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:05,878 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 19:58:05,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (7)] Ended with exit code 0 [2024-10-11 19:58:06,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/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 [2024-10-11 19:58:06,079 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-10-11 19:58:06,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:06,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1756363601, now seen corresponding path program 2 times [2024-10-11 19:58:06,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:06,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344909278] [2024-10-11 19:58:06,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:58:06,080 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 [2024-10-11 19:58:06,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:06,081 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/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) [2024-10-11 19:58:06,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (8)] Waiting until timeout for monitored process [2024-10-11 19:58:06,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:58:06,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:58:06,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:58:06,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:06,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:06,387 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:06,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:06,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:06,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344909278] [2024-10-11 19:58:06,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344909278] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:06,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:58:06,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:58:06,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927021951] [2024-10-11 19:58:06,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:06,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:58:06,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:06,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:58:06,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:58:07,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-10-11 19:58:07,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 99 transitions, 600 flow. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 14 states have internal predecessors, (246), 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) [2024-10-11 19:58:07,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:07,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-10-11 19:58:07,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:10,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:58:15,542 INFO L124 PetriNetUnfolderBase]: 5243/8455 cut-off events. [2024-10-11 19:58:15,542 INFO L125 PetriNetUnfolderBase]: For 3154/3154 co-relation queries the response was YES. [2024-10-11 19:58:15,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18518 conditions, 8455 events. 5243/8455 cut-off events. For 3154/3154 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 57284 event pairs, 4551 based on Foata normal form. 30/6577 useless extension candidates. Maximal degree in co-relation 18327. Up to 7288 conditions per place. [2024-10-11 19:58:15,586 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 42 selfloop transitions, 107 changer transitions 0/159 dead transitions. [2024-10-11 19:58:15,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 159 transitions, 1378 flow [2024-10-11 19:58:15,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:58:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:58:15,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 463 transitions. [2024-10-11 19:58:15,589 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33944281524926684 [2024-10-11 19:58:15,589 INFO L175 Difference]: Start difference. First operand has 87 places, 99 transitions, 600 flow. Second operand 22 states and 463 transitions. [2024-10-11 19:58:15,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 159 transitions, 1378 flow [2024-10-11 19:58:15,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 159 transitions, 1339 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:58:15,601 INFO L231 Difference]: Finished difference. Result has 111 places, 159 transitions, 1345 flow [2024-10-11 19:58:15,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1345, PETRI_PLACES=111, PETRI_TRANSITIONS=159} [2024-10-11 19:58:15,603 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 50 predicate places. [2024-10-11 19:58:15,603 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 159 transitions, 1345 flow [2024-10-11 19:58:15,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 14 states have internal predecessors, (246), 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) [2024-10-11 19:58:15,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:15,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:15,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (8)] Ended with exit code 0 [2024-10-11 19:58:15,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/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 [2024-10-11 19:58:15,806 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-10-11 19:58:15,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:15,807 INFO L85 PathProgramCache]: Analyzing trace with hash 817809022, now seen corresponding path program 1 times [2024-10-11 19:58:15,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:15,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036865762] [2024-10-11 19:58:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:15,808 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 [2024-10-11 19:58:15,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:15,812 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/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) [2024-10-11 19:58:15,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (9)] Waiting until timeout for monitored process [2024-10-11 19:58:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:15,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 19:58:15,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:15,902 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:15,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:15,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036865762] [2024-10-11 19:58:15,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036865762] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:15,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:15,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:58:15,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025338450] [2024-10-11 19:58:15,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:15,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:58:15,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:15,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:58:15,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:58:15,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-10-11 19:58:15,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 159 transitions, 1345 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-10-11 19:58:15,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:15,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-10-11 19:58:15,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:16,617 INFO L124 PetriNetUnfolderBase]: 5279/8661 cut-off events. [2024-10-11 19:58:16,618 INFO L125 PetriNetUnfolderBase]: For 3641/3641 co-relation queries the response was YES. [2024-10-11 19:58:16,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19606 conditions, 8661 events. 5279/8661 cut-off events. For 3641/3641 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 57407 event pairs, 1974 based on Foata normal form. 184/6835 useless extension candidates. Maximal degree in co-relation 19374. Up to 5406 conditions per place. [2024-10-11 19:58:16,659 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 161 selfloop transitions, 2 changer transitions 2/177 dead transitions. [2024-10-11 19:58:16,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 177 transitions, 1737 flow [2024-10-11 19:58:16,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:58:16,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:58:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-10-11 19:58:16,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2024-10-11 19:58:16,661 INFO L175 Difference]: Start difference. First operand has 111 places, 159 transitions, 1345 flow. Second operand 3 states and 112 transitions. [2024-10-11 19:58:16,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 177 transitions, 1737 flow [2024-10-11 19:58:16,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 177 transitions, 1457 flow, removed 87 selfloop flow, removed 9 redundant places. [2024-10-11 19:58:16,673 INFO L231 Difference]: Finished difference. Result has 105 places, 158 transitions, 1063 flow [2024-10-11 19:58:16,673 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1063, PETRI_PLACES=105, PETRI_TRANSITIONS=158} [2024-10-11 19:58:16,673 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 44 predicate places. [2024-10-11 19:58:16,674 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 158 transitions, 1063 flow [2024-10-11 19:58:16,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-10-11 19:58:16,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:16,674 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:16,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (9)] Forceful destruction successful, exit code 0 [2024-10-11 19:58:16,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/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 [2024-10-11 19:58:16,875 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-10-11 19:58:16,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:16,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1770209245, now seen corresponding path program 1 times [2024-10-11 19:58:16,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:16,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536055377] [2024-10-11 19:58:16,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:16,876 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 [2024-10-11 19:58:16,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:16,877 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/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) [2024-10-11 19:58:16,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (10)] Waiting until timeout for monitored process [2024-10-11 19:58:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:16,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 19:58:16,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:16,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:58:16,977 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:16,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:16,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536055377] [2024-10-11 19:58:16,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536055377] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:16,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:16,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:58:16,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137523616] [2024-10-11 19:58:16,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:16,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:58:16,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:16,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:58:16,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:58:16,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-10-11 19:58:16,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 158 transitions, 1063 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-10-11 19:58:16,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:16,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-10-11 19:58:16,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:17,783 INFO L124 PetriNetUnfolderBase]: 4883/8096 cut-off events. [2024-10-11 19:58:17,783 INFO L125 PetriNetUnfolderBase]: For 3866/3950 co-relation queries the response was YES. [2024-10-11 19:58:17,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19345 conditions, 8096 events. 4883/8096 cut-off events. For 3866/3950 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 51139 event pairs, 2076 based on Foata normal form. 82/6845 useless extension candidates. Maximal degree in co-relation 19142. Up to 6432 conditions per place. [2024-10-11 19:58:17,820 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 155 selfloop transitions, 3 changer transitions 0/170 dead transitions. [2024-10-11 19:58:17,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 170 transitions, 1421 flow [2024-10-11 19:58:17,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:58:17,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:58:17,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-10-11 19:58:17,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2024-10-11 19:58:17,822 INFO L175 Difference]: Start difference. First operand has 105 places, 158 transitions, 1063 flow. Second operand 3 states and 105 transitions. [2024-10-11 19:58:17,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 170 transitions, 1421 flow [2024-10-11 19:58:17,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 170 transitions, 1419 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:58:17,834 INFO L231 Difference]: Finished difference. Result has 107 places, 160 transitions, 1086 flow [2024-10-11 19:58:17,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1086, PETRI_PLACES=107, PETRI_TRANSITIONS=160} [2024-10-11 19:58:17,836 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 46 predicate places. [2024-10-11 19:58:17,836 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 160 transitions, 1086 flow [2024-10-11 19:58:17,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-10-11 19:58:17,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:17,837 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:17,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (10)] Ended with exit code 0 [2024-10-11 19:58:18,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/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 [2024-10-11 19:58:18,038 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-10-11 19:58:18,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:18,039 INFO L85 PathProgramCache]: Analyzing trace with hash -997240423, now seen corresponding path program 1 times [2024-10-11 19:58:18,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:18,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059988189] [2024-10-11 19:58:18,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:18,039 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 [2024-10-11 19:58:18,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:18,042 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/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) [2024-10-11 19:58:18,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (11)] Waiting until timeout for monitored process [2024-10-11 19:58:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:18,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:58:18,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:18,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:58:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:58:18,163 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:18,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:18,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059988189] [2024-10-11 19:58:18,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059988189] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:18,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:18,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:58:18,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907276890] [2024-10-11 19:58:18,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:18,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:58:18,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:18,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:58:18,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:58:18,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-10-11 19:58:18,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 160 transitions, 1086 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-10-11 19:58:18,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:18,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-10-11 19:58:18,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:18,705 INFO L124 PetriNetUnfolderBase]: 3652/6305 cut-off events. [2024-10-11 19:58:18,705 INFO L125 PetriNetUnfolderBase]: For 5440/5504 co-relation queries the response was YES. [2024-10-11 19:58:18,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16050 conditions, 6305 events. 3652/6305 cut-off events. For 5440/5504 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 40237 event pairs, 2740 based on Foata normal form. 0/5673 useless extension candidates. Maximal degree in co-relation 15846. Up to 5173 conditions per place. [2024-10-11 19:58:18,742 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 132 selfloop transitions, 14 changer transitions 0/158 dead transitions. [2024-10-11 19:58:18,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 158 transitions, 1372 flow [2024-10-11 19:58:18,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:58:18,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:58:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-10-11 19:58:18,743 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-10-11 19:58:18,743 INFO L175 Difference]: Start difference. First operand has 107 places, 160 transitions, 1086 flow. Second operand 4 states and 101 transitions. [2024-10-11 19:58:18,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 158 transitions, 1372 flow [2024-10-11 19:58:18,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 158 transitions, 1369 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:58:18,752 INFO L231 Difference]: Finished difference. Result has 107 places, 158 transitions, 1105 flow [2024-10-11 19:58:18,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1105, PETRI_PLACES=107, PETRI_TRANSITIONS=158} [2024-10-11 19:58:18,753 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 46 predicate places. [2024-10-11 19:58:18,753 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 158 transitions, 1105 flow [2024-10-11 19:58:18,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-10-11 19:58:18,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:18,754 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:18,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (11)] Forceful destruction successful, exit code 0 [2024-10-11 19:58:18,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/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 [2024-10-11 19:58:18,954 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-10-11 19:58:18,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:18,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1012857250, now seen corresponding path program 1 times [2024-10-11 19:58:18,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:18,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592420343] [2024-10-11 19:58:18,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:18,956 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 [2024-10-11 19:58:18,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:18,958 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/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) [2024-10-11 19:58:18,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (12)] Waiting until timeout for monitored process [2024-10-11 19:58:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:19,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:58:19,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:58:19,082 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:19,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:19,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592420343] [2024-10-11 19:58:19,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592420343] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:19,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:19,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:58:19,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760171690] [2024-10-11 19:58:19,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:19,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:58:19,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:19,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:58:19,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:58:19,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-10-11 19:58:19,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 158 transitions, 1105 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-10-11 19:58:19,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:19,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-10-11 19:58:19,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:19,789 INFO L124 PetriNetUnfolderBase]: 4566/7896 cut-off events. [2024-10-11 19:58:19,789 INFO L125 PetriNetUnfolderBase]: For 7155/7219 co-relation queries the response was YES. [2024-10-11 19:58:19,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20248 conditions, 7896 events. 4566/7896 cut-off events. For 7155/7219 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 51879 event pairs, 3525 based on Foata normal form. 216/7480 useless extension candidates. Maximal degree in co-relation 20040. Up to 5255 conditions per place. [2024-10-11 19:58:19,836 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 149 selfloop transitions, 17 changer transitions 1/179 dead transitions. [2024-10-11 19:58:19,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 179 transitions, 1525 flow [2024-10-11 19:58:19,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:58:19,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:58:19,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-10-11 19:58:19,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5282258064516129 [2024-10-11 19:58:19,838 INFO L175 Difference]: Start difference. First operand has 107 places, 158 transitions, 1105 flow. Second operand 4 states and 131 transitions. [2024-10-11 19:58:19,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 179 transitions, 1525 flow [2024-10-11 19:58:19,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 179 transitions, 1510 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:58:19,850 INFO L231 Difference]: Finished difference. Result has 109 places, 157 transitions, 1131 flow [2024-10-11 19:58:19,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1131, PETRI_PLACES=109, PETRI_TRANSITIONS=157} [2024-10-11 19:58:19,851 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 48 predicate places. [2024-10-11 19:58:19,851 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 157 transitions, 1131 flow [2024-10-11 19:58:19,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-10-11 19:58:19,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:19,851 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:19,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (12)] Forceful destruction successful, exit code 0 [2024-10-11 19:58:20,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/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 [2024-10-11 19:58:20,052 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-10-11 19:58:20,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:20,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1354870203, now seen corresponding path program 2 times [2024-10-11 19:58:20,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:20,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410111854] [2024-10-11 19:58:20,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:58:20,053 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 [2024-10-11 19:58:20,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:20,054 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/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) [2024-10-11 19:58:20,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (13)] Waiting until timeout for monitored process [2024-10-11 19:58:20,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 19:58:20,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:58:20,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 19:58:20,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:20,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:58:20,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:20,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:58:20,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:58:20,266 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:58:20,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:58:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 19:58:20,303 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:58:20,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:20,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410111854] [2024-10-11 19:58:20,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410111854] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:58:20,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:58:20,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:58:20,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337113026] [2024-10-11 19:58:20,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:58:20,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:58:20,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:20,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:58:20,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:58:20,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-10-11 19:58:20,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 157 transitions, 1131 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-10-11 19:58:20,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:20,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-10-11 19:58:20,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:20,899 INFO L124 PetriNetUnfolderBase]: 3461/6073 cut-off events. [2024-10-11 19:58:20,899 INFO L125 PetriNetUnfolderBase]: For 6442/6442 co-relation queries the response was YES. [2024-10-11 19:58:20,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15029 conditions, 6073 events. 3461/6073 cut-off events. For 6442/6442 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 38871 event pairs, 2563 based on Foata normal form. 341/5897 useless extension candidates. Maximal degree in co-relation 14818. Up to 5101 conditions per place. [2024-10-11 19:58:20,931 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 129 selfloop transitions, 12 changer transitions 1/154 dead transitions. [2024-10-11 19:58:20,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 154 transitions, 1389 flow [2024-10-11 19:58:20,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:58:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:58:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-10-11 19:58:20,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-10-11 19:58:20,933 INFO L175 Difference]: Start difference. First operand has 109 places, 157 transitions, 1131 flow. Second operand 4 states and 99 transitions. [2024-10-11 19:58:20,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 154 transitions, 1389 flow [2024-10-11 19:58:20,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 154 transitions, 1345 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-11 19:58:20,941 INFO L231 Difference]: Finished difference. Result has 106 places, 153 transitions, 1073 flow [2024-10-11 19:58:20,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1073, PETRI_PLACES=106, PETRI_TRANSITIONS=153} [2024-10-11 19:58:20,942 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 45 predicate places. [2024-10-11 19:58:20,942 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 153 transitions, 1073 flow [2024-10-11 19:58:20,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-10-11 19:58:20,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:20,942 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:58:20,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (13)] Forceful destruction successful, exit code 0 [2024-10-11 19:58:21,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/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 [2024-10-11 19:58:21,143 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-10-11 19:58:21,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:21,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1076824768, now seen corresponding path program 1 times [2024-10-11 19:58:21,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:21,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319177966] [2024-10-11 19:58:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:58:21,144 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 [2024-10-11 19:58:21,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:21,145 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/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) [2024-10-11 19:58:21,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (14)] Waiting until timeout for monitored process [2024-10-11 19:58:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:58:21,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 19:58:21,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:21,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:58:21,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:58:22,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:22,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319177966] [2024-10-11 19:58:22,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1319177966] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:22,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:58:22,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-10-11 19:58:22,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249675371] [2024-10-11 19:58:22,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:22,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 19:58:22,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:22,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 19:58:22,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 19:58:22,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-10-11 19:58:22,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 153 transitions, 1073 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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) [2024-10-11 19:58:22,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:22,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-10-11 19:58:22,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:25,239 INFO L124 PetriNetUnfolderBase]: 6983/12520 cut-off events. [2024-10-11 19:58:25,240 INFO L125 PetriNetUnfolderBase]: For 4229/4229 co-relation queries the response was YES. [2024-10-11 19:58:25,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27886 conditions, 12520 events. 6983/12520 cut-off events. For 4229/4229 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 92976 event pairs, 5050 based on Foata normal form. 516/11995 useless extension candidates. Maximal degree in co-relation 27672. Up to 4242 conditions per place. [2024-10-11 19:58:25,301 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 104 selfloop transitions, 91 changer transitions 0/205 dead transitions. [2024-10-11 19:58:25,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 205 transitions, 1623 flow [2024-10-11 19:58:25,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:58:25,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:58:25,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-10-11 19:58:25,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41774193548387095 [2024-10-11 19:58:25,304 INFO L175 Difference]: Start difference. First operand has 106 places, 153 transitions, 1073 flow. Second operand 10 states and 259 transitions. [2024-10-11 19:58:25,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 205 transitions, 1623 flow [2024-10-11 19:58:25,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 205 transitions, 1586 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-10-11 19:58:25,315 INFO L231 Difference]: Finished difference. Result has 112 places, 153 transitions, 1262 flow [2024-10-11 19:58:25,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1262, PETRI_PLACES=112, PETRI_TRANSITIONS=153} [2024-10-11 19:58:25,316 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 51 predicate places. [2024-10-11 19:58:25,316 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 153 transitions, 1262 flow [2024-10-11 19:58:25,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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) [2024-10-11 19:58:25,317 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:58:25,317 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-11 19:58:25,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (14)] Ended with exit code 0 [2024-10-11 19:58:25,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/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 [2024-10-11 19:58:25,518 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-10-11 19:58:25,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:58:25,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1249920315, now seen corresponding path program 3 times [2024-10-11 19:58:25,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:58:25,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765191291] [2024-10-11 19:58:25,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:58:25,519 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 [2024-10-11 19:58:25,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:58:25,522 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/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) [2024-10-11 19:58:25,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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 (15)] Waiting until timeout for monitored process [2024-10-11 19:58:25,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-11 19:58:25,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:58:25,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 19:58:25,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:58:25,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:58:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:26,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:58:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:58:27,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:58:27,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765191291] [2024-10-11 19:58:27,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765191291] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:58:27,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:58:27,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-11 19:58:27,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772986973] [2024-10-11 19:58:27,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:58:27,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 19:58:27,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:58:27,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 19:58:27,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-11 19:58:28,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-10-11 19:58:28,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 153 transitions, 1262 flow. Second operand has 26 states, 26 states have (on average 17.76923076923077) internal successors, (462), 26 states have internal predecessors, (462), 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) [2024-10-11 19:58:28,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:58:28,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-10-11 19:58:28,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:58:36,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:58:38,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:58:39,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:58:41,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:58:42,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:58:43,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:58:44,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:58:45,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:58:46,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:58:52,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:58:53,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:58:54,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:58:56,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:58:58,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:01,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:03,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:04,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:05,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:06,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:08,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:12,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:13,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:14,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:16,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:59:17,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []