./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/chl-word-subst.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/chl-word-subst.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 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:53:15,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:53:15,123 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:53:15,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:53:15,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:53:15,154 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:53:15,154 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:53:15,155 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:53:15,155 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:53:15,156 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:53:15,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:53:15,156 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:53:15,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:53:15,157 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:53:15,158 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:53:15,158 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:53:15,158 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:53:15,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:53:15,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:53:15,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:53:15,160 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:53:15,160 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:53:15,161 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:53:15,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:53:15,161 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:53:15,162 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:53:15,162 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:53:15,162 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:53:15,162 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:53:15,163 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:53:15,163 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:53:15,163 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:53:15,164 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:53:15,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:53:15,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:53:15,165 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:53:15,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:53:15,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:53:15,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:53:15,165 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:53:15,166 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:53:15,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:53:15,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2024-10-11 19:53:15,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:53:15,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:53:15,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:53:15,486 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:53:15,487 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:53:15,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-10-11 19:53:16,930 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:53:17,177 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:53:17,178 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-10-11 19:53:17,187 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b760e17f8/c18cb8aecaee4789b4da6781dca88d3c/FLAG3654a286b [2024-10-11 19:53:17,540 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b760e17f8/c18cb8aecaee4789b4da6781dca88d3c [2024-10-11 19:53:17,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:53:17,544 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:53:17,545 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:53:17,545 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:53:17,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:53:17,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:53:17" (1/1) ... [2024-10-11 19:53:17,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2649eabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:17, skipping insertion in model container [2024-10-11 19:53:17,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:53:17" (1/1) ... [2024-10-11 19:53:17,584 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:53:17,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:53:17,818 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 19:53:17,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@263db8b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:17, skipping insertion in model container [2024-10-11 19:53:17,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:53:17,819 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:53:17,820 INFO L158 Benchmark]: Toolchain (without parser) took 275.36ms. Allocated memory is still 142.6MB. Free memory was 108.9MB in the beginning and 97.5MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:53:17,820 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 104.9MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:53:17,821 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.32ms. Allocated memory is still 142.6MB. Free memory was 108.9MB in the beginning and 97.5MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:53:17,822 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 104.9MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.32ms. Allocated memory is still 142.6MB. Free memory was 108.9MB in the beginning and 97.5MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 138]: 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/chl-word-subst.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 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:53:20,049 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:53:20,121 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:53:20,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:53:20,126 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:53:20,150 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:53:20,151 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:53:20,152 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:53:20,152 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:53:20,153 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:53:20,153 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:53:20,153 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:53:20,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:53:20,154 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:53:20,155 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:53:20,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:53:20,155 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:53:20,156 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:53:20,156 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:53:20,156 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:53:20,157 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:53:20,157 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:53:20,157 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:53:20,158 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:53:20,158 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:53:20,158 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:53:20,159 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:53:20,159 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:53:20,159 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:53:20,160 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:53:20,160 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:53:20,160 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:53:20,161 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:53:20,161 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:53:20,161 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:53:20,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:53:20,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:53:20,162 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:53:20,162 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:53:20,163 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:53:20,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:53:20,163 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:53:20,164 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:53:20,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:53:20,164 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:53:20,164 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c6ecf58df9dd6f4f380af0d7ef563f293bde5430d47e04b9ba5ac44168fc198 [2024-10-11 19:53:20,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:53:20,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:53:20,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:53:20,526 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:53:20,527 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:53:20,530 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-10-11 19:53:22,067 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:53:22,281 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:53:22,281 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-subst.wvr.c [2024-10-11 19:53:22,288 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3ee91a19c/a8fca6b2e2a3470e9d7d834eaa16f06a/FLAGc608effa9 [2024-10-11 19:53:22,637 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3ee91a19c/a8fca6b2e2a3470e9d7d834eaa16f06a [2024-10-11 19:53:22,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:53:22,641 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:53:22,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:53:22,642 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:53:22,648 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:53:22,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:53:22" (1/1) ... [2024-10-11 19:53:22,650 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557be39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:22, skipping insertion in model container [2024-10-11 19:53:22,650 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:53:22" (1/1) ... [2024-10-11 19:53:22,673 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:53:22,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:53:22,960 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:53:22,966 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:53:23,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:53:23,006 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:53:23,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:53:23,058 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:53:23,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23 WrapperNode [2024-10-11 19:53:23,058 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:53:23,059 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:53:23,059 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:53:23,060 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:53:23,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,078 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,100 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 162 [2024-10-11 19:53:23,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:53:23,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:53:23,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:53:23,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:53:23,116 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,123 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,151 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-11 19:53:23,152 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,165 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,172 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,180 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,183 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:53:23,184 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:53:23,187 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:53:23,187 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:53:23,188 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (1/1) ... [2024-10-11 19:53:23,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:53:23,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:23,222 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 19:53:23,224 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 19:53:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:53:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:53:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:53:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:53:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:53:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:53:23,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:53:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:53:23,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:53:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 19:53:23,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 19:53:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:53:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:53:23,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:53:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:53:23,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:53:23,265 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 19:53:23,414 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:53:23,417 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:53:24,164 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:53:24,164 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:53:24,526 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:53:24,527 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-11 19:53:24,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:53:24 BoogieIcfgContainer [2024-10-11 19:53:24,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:53:24,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:53:24,529 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:53:24,533 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:53:24,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:53:22" (1/3) ... [2024-10-11 19:53:24,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ebdcb9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:53:24, skipping insertion in model container [2024-10-11 19:53:24,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:23" (2/3) ... [2024-10-11 19:53:24,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ebdcb9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:53:24, skipping insertion in model container [2024-10-11 19:53:24,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:53:24" (3/3) ... [2024-10-11 19:53:24,536 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2024-10-11 19:53:24,554 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:53:24,554 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-11 19:53:24,554 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:53:24,652 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 19:53:24,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 96 transitions, 213 flow [2024-10-11 19:53:24,748 INFO L124 PetriNetUnfolderBase]: 12/93 cut-off events. [2024-10-11 19:53:24,749 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 19:53:24,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 93 events. 12/93 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 309 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2024-10-11 19:53:24,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 96 transitions, 213 flow [2024-10-11 19:53:24,760 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 92 transitions, 202 flow [2024-10-11 19:53:24,771 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:53:24,777 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;@51ca50d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:53:24,777 INFO L334 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2024-10-11 19:53:24,780 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:53:24,780 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:53:24,780 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:53:24,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:24,781 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:53:24,781 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:24,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:24,787 INFO L85 PathProgramCache]: Analyzing trace with hash 773405, now seen corresponding path program 1 times [2024-10-11 19:53:24,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:24,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337297382] [2024-10-11 19:53:24,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:24,800 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 19:53:24,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:24,803 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 19:53:24,804 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 19:53:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:24,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:53:24,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:24,956 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 19:53:24,968 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 19:53:24,968 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:53:24,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:24,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337297382] [2024-10-11 19:53:24,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337297382] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:24,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:24,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:53:24,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184260264] [2024-10-11 19:53:24,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:24,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:53:24,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:25,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:53:25,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:53:25,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-10-11 19:53:25,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 92 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 19:53:25,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:25,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-10-11 19:53:25,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:25,886 INFO L124 PetriNetUnfolderBase]: 2712/5043 cut-off events. [2024-10-11 19:53:25,886 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-10-11 19:53:25,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8794 conditions, 5043 events. 2712/5043 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 36080 event pairs, 1692 based on Foata normal form. 1/3400 useless extension candidates. Maximal degree in co-relation 8318. Up to 3567 conditions per place. [2024-10-11 19:53:25,925 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 45 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2024-10-11 19:53:25,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 87 transitions, 286 flow [2024-10-11 19:53:25,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:53:25,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:53:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2024-10-11 19:53:25,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-10-11 19:53:25,939 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 202 flow. Second operand 3 states and 183 transitions. [2024-10-11 19:53:25,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 87 transitions, 286 flow [2024-10-11 19:53:25,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 274 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 19:53:25,951 INFO L231 Difference]: Finished difference. Result has 81 places, 87 transitions, 184 flow [2024-10-11 19:53:25,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=81, PETRI_TRANSITIONS=87} [2024-10-11 19:53:25,958 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, -9 predicate places. [2024-10-11 19:53:25,958 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 87 transitions, 184 flow [2024-10-11 19:53:25,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 19:53:25,959 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:25,962 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:53:25,966 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 (2)] Ended with exit code 0 [2024-10-11 19:53:26,164 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 19:53:26,165 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:26,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:26,166 INFO L85 PathProgramCache]: Analyzing trace with hash 773406, now seen corresponding path program 1 times [2024-10-11 19:53:26,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:26,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594913631] [2024-10-11 19:53:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:26,166 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 19:53:26,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:26,170 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 19:53:26,171 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 19:53:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:26,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:53:26,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:26,263 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 19:53:26,425 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 19:53:26,425 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:53:26,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:26,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594913631] [2024-10-11 19:53:26,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594913631] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:26,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:26,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:53:26,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944131521] [2024-10-11 19:53:26,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:26,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:53:26,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:26,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:53:26,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:53:26,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-10-11 19:53:26,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 87 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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 19:53:26,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:26,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-10-11 19:53:26,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:27,495 INFO L124 PetriNetUnfolderBase]: 2715/5052 cut-off events. [2024-10-11 19:53:27,496 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-11 19:53:27,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8702 conditions, 5052 events. 2715/5052 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 36131 event pairs, 1692 based on Foata normal form. 0/3404 useless extension candidates. Maximal degree in co-relation 8652. Up to 3580 conditions per place. [2024-10-11 19:53:27,544 INFO L140 encePairwiseOnDemand]: 83/96 looper letters, 49 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-10-11 19:53:27,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 96 transitions, 322 flow [2024-10-11 19:53:27,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:53:27,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:53:27,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2024-10-11 19:53:27,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-10-11 19:53:27,547 INFO L175 Difference]: Start difference. First operand has 81 places, 87 transitions, 184 flow. Second operand 4 states and 238 transitions. [2024-10-11 19:53:27,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 96 transitions, 322 flow [2024-10-11 19:53:27,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 96 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:53:27,552 INFO L231 Difference]: Finished difference. Result has 85 places, 96 transitions, 262 flow [2024-10-11 19:53:27,553 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=85, PETRI_TRANSITIONS=96} [2024-10-11 19:53:27,554 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, -5 predicate places. [2024-10-11 19:53:27,554 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 96 transitions, 262 flow [2024-10-11 19:53:27,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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 19:53:27,557 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:27,557 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:53:27,562 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 (3)] Ended with exit code 0 [2024-10-11 19:53:27,757 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 19:53:27,758 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:27,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:27,759 INFO L85 PathProgramCache]: Analyzing trace with hash 743267953, now seen corresponding path program 1 times [2024-10-11 19:53:27,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:27,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756405346] [2024-10-11 19:53:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:27,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:27,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:27,763 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 19:53:27,764 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 19:53:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:27,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:53:27,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:27,841 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 19:53:28,030 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 19:53:28,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:28,324 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 19:53:28,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:28,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756405346] [2024-10-11 19:53:28,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756405346] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:28,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:53:28,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:53:28,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26068409] [2024-10-11 19:53:28,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:28,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:53:28,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:28,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:53:28,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:53:29,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-10-11 19:53:29,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 262 flow. Second operand has 10 states, 10 states have (on average 45.0) internal successors, (450), 10 states have internal predecessors, (450), 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 19:53:29,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:29,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-10-11 19:53:29,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:30,901 INFO L124 PetriNetUnfolderBase]: 2724/5079 cut-off events. [2024-10-11 19:53:30,901 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-10-11 19:53:30,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8820 conditions, 5079 events. 2724/5079 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 36335 event pairs, 1692 based on Foata normal form. 0/3431 useless extension candidates. Maximal degree in co-relation 8666. Up to 3583 conditions per place. [2024-10-11 19:53:30,935 INFO L140 encePairwiseOnDemand]: 83/96 looper letters, 49 selfloop transitions, 37 changer transitions 0/123 dead transitions. [2024-10-11 19:53:30,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 123 transitions, 554 flow [2024-10-11 19:53:30,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:53:30,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:53:30,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 535 transitions. [2024-10-11 19:53:30,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5572916666666666 [2024-10-11 19:53:30,944 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 262 flow. Second operand 10 states and 535 transitions. [2024-10-11 19:53:30,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 123 transitions, 554 flow [2024-10-11 19:53:30,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 554 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:53:30,949 INFO L231 Difference]: Finished difference. Result has 97 places, 123 transitions, 506 flow [2024-10-11 19:53:30,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=506, PETRI_PLACES=97, PETRI_TRANSITIONS=123} [2024-10-11 19:53:30,950 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 7 predicate places. [2024-10-11 19:53:30,950 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 123 transitions, 506 flow [2024-10-11 19:53:30,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 45.0) internal successors, (450), 10 states have internal predecessors, (450), 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 19:53:30,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:30,951 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:30,954 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 (4)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:31,151 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 19:53:31,152 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:31,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:31,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2112306173, now seen corresponding path program 1 times [2024-10-11 19:53:31,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:31,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517411601] [2024-10-11 19:53:31,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:31,153 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 19:53:31,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:31,156 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 19:53:31,157 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 19:53:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:31,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:53:31,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:31,297 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 19:53:31,297 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:53:31,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:31,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517411601] [2024-10-11 19:53:31,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517411601] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:31,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:31,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:53:31,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47646008] [2024-10-11 19:53:31,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:31,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:53:31,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:31,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:53:31,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:53:31,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 96 [2024-10-11 19:53:31,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 123 transitions, 506 flow. Second operand has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 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 19:53:31,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:31,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 96 [2024-10-11 19:53:31,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:32,550 INFO L124 PetriNetUnfolderBase]: 5214/9499 cut-off events. [2024-10-11 19:53:32,551 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-10-11 19:53:32,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16809 conditions, 9499 events. 5214/9499 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 72717 event pairs, 2894 based on Foata normal form. 0/6499 useless extension candidates. Maximal degree in co-relation 16667. Up to 4058 conditions per place. [2024-10-11 19:53:32,653 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 166 selfloop transitions, 5 changer transitions 0/210 dead transitions. [2024-10-11 19:53:32,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 210 transitions, 1178 flow [2024-10-11 19:53:32,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:53:32,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:53:32,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 345 transitions. [2024-10-11 19:53:32,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-10-11 19:53:32,656 INFO L175 Difference]: Start difference. First operand has 97 places, 123 transitions, 506 flow. Second operand 5 states and 345 transitions. [2024-10-11 19:53:32,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 210 transitions, 1178 flow [2024-10-11 19:53:32,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 210 transitions, 1022 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-10-11 19:53:32,668 INFO L231 Difference]: Finished difference. Result has 99 places, 125 transitions, 436 flow [2024-10-11 19:53:32,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=436, PETRI_PLACES=99, PETRI_TRANSITIONS=125} [2024-10-11 19:53:32,670 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2024-10-11 19:53:32,671 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 125 transitions, 436 flow [2024-10-11 19:53:32,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 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 19:53:32,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:32,671 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:32,675 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 (5)] Ended with exit code 0 [2024-10-11 19:53:32,874 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 19:53:32,875 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:32,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:32,875 INFO L85 PathProgramCache]: Analyzing trace with hash 251969944, now seen corresponding path program 1 times [2024-10-11 19:53:32,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:32,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282325742] [2024-10-11 19:53:32,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:32,876 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 19:53:32,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:32,879 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 19:53:32,880 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 19:53:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:32,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:53:32,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:33,025 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 19:53:33,025 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:53:33,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:33,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282325742] [2024-10-11 19:53:33,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282325742] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:33,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:33,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:53:33,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468153949] [2024-10-11 19:53:33,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:33,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:53:33,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:33,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:53:33,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:53:33,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 96 [2024-10-11 19:53:33,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 125 transitions, 436 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 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 19:53:33,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:33,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 96 [2024-10-11 19:53:33,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:33,930 INFO L124 PetriNetUnfolderBase]: 4748/8839 cut-off events. [2024-10-11 19:53:33,931 INFO L125 PetriNetUnfolderBase]: For 949/949 co-relation queries the response was YES. [2024-10-11 19:53:33,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16162 conditions, 8839 events. 4748/8839 cut-off events. For 949/949 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 68096 event pairs, 2738 based on Foata normal form. 0/6271 useless extension candidates. Maximal degree in co-relation 16039. Up to 4077 conditions per place. [2024-10-11 19:53:34,016 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 159 selfloop transitions, 5 changer transitions 0/203 dead transitions. [2024-10-11 19:53:34,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 203 transitions, 1023 flow [2024-10-11 19:53:34,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:53:34,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:53:34,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2024-10-11 19:53:34,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7041666666666667 [2024-10-11 19:53:34,020 INFO L175 Difference]: Start difference. First operand has 99 places, 125 transitions, 436 flow. Second operand 5 states and 338 transitions. [2024-10-11 19:53:34,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 203 transitions, 1023 flow [2024-10-11 19:53:34,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 203 transitions, 1019 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 19:53:34,027 INFO L231 Difference]: Finished difference. Result has 104 places, 127 transitions, 457 flow [2024-10-11 19:53:34,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=457, PETRI_PLACES=104, PETRI_TRANSITIONS=127} [2024-10-11 19:53:34,028 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 14 predicate places. [2024-10-11 19:53:34,029 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 127 transitions, 457 flow [2024-10-11 19:53:34,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 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 19:53:34,029 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:34,029 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:34,034 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 (6)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:34,230 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 19:53:34,230 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:34,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:34,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1204734742, now seen corresponding path program 1 times [2024-10-11 19:53:34,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:34,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330747608] [2024-10-11 19:53:34,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:34,233 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 19:53:34,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:34,236 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 19:53:34,237 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 19:53:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:34,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:53:34,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:34,385 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 19:53:34,386 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:53:34,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:34,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330747608] [2024-10-11 19:53:34,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330747608] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:34,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:34,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:53:34,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592318167] [2024-10-11 19:53:34,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:34,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:53:34,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:34,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:53:34,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:53:34,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 96 [2024-10-11 19:53:34,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 127 transitions, 457 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 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 19:53:34,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:34,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 96 [2024-10-11 19:53:34,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:35,525 INFO L124 PetriNetUnfolderBase]: 8554/16070 cut-off events. [2024-10-11 19:53:35,525 INFO L125 PetriNetUnfolderBase]: For 3097/3097 co-relation queries the response was YES. [2024-10-11 19:53:35,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30812 conditions, 16070 events. 8554/16070 cut-off events. For 3097/3097 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 137416 event pairs, 4934 based on Foata normal form. 114/12205 useless extension candidates. Maximal degree in co-relation 30643. Up to 6387 conditions per place. [2024-10-11 19:53:35,664 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 155 selfloop transitions, 11 changer transitions 0/205 dead transitions. [2024-10-11 19:53:35,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 205 transitions, 1031 flow [2024-10-11 19:53:35,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:53:35,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:53:35,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 342 transitions. [2024-10-11 19:53:35,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7125 [2024-10-11 19:53:35,667 INFO L175 Difference]: Start difference. First operand has 104 places, 127 transitions, 457 flow. Second operand 5 states and 342 transitions. [2024-10-11 19:53:35,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 205 transitions, 1031 flow [2024-10-11 19:53:35,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 205 transitions, 1026 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:53:35,680 INFO L231 Difference]: Finished difference. Result has 108 places, 131 transitions, 513 flow [2024-10-11 19:53:35,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=513, PETRI_PLACES=108, PETRI_TRANSITIONS=131} [2024-10-11 19:53:35,681 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 18 predicate places. [2024-10-11 19:53:35,681 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 131 transitions, 513 flow [2024-10-11 19:53:35,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 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 19:53:35,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:35,682 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 19:53:35,686 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 19:53:35,882 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 19:53:35,883 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:35,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:35,883 INFO L85 PathProgramCache]: Analyzing trace with hash 935894506, now seen corresponding path program 2 times [2024-10-11 19:53:35,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:35,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836132369] [2024-10-11 19:53:35,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:53:35,884 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 19:53:35,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:35,886 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 19:53:35,887 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 19:53:36,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:53:36,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:36,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:53:36,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:36,069 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 19:53:36,326 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 19:53:36,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:36,842 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 19:53:36,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:36,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836132369] [2024-10-11 19:53:36,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836132369] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:36,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:53:36,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:53:36,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028564115] [2024-10-11 19:53:36,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:36,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:53:36,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:36,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:53:36,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:53:39,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-10-11 19:53:39,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 131 transitions, 513 flow. Second operand has 14 states, 14 states have (on average 45.57142857142857) internal successors, (638), 14 states have internal predecessors, (638), 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 19:53:39,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:39,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-10-11 19:53:39,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:44,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:53:47,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:53:55,523 INFO L124 PetriNetUnfolderBase]: 8261/16466 cut-off events. [2024-10-11 19:53:55,523 INFO L125 PetriNetUnfolderBase]: For 6968/6968 co-relation queries the response was YES. [2024-10-11 19:53:55,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32269 conditions, 16466 events. 8261/16466 cut-off events. For 6968/6968 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 150704 event pairs, 5595 based on Foata normal form. 42/12102 useless extension candidates. Maximal degree in co-relation 31646. Up to 11136 conditions per place. [2024-10-11 19:53:55,607 INFO L140 encePairwiseOnDemand]: 83/96 looper letters, 57 selfloop transitions, 91 changer transitions 0/185 dead transitions. [2024-10-11 19:53:55,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 185 transitions, 1085 flow [2024-10-11 19:53:55,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:53:55,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:53:55,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1126 transitions. [2024-10-11 19:53:55,613 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5331439393939394 [2024-10-11 19:53:55,613 INFO L175 Difference]: Start difference. First operand has 108 places, 131 transitions, 513 flow. Second operand 22 states and 1126 transitions. [2024-10-11 19:53:55,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 185 transitions, 1085 flow [2024-10-11 19:53:55,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 185 transitions, 1071 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 19:53:55,628 INFO L231 Difference]: Finished difference. Result has 134 places, 185 transitions, 1043 flow [2024-10-11 19:53:55,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1043, PETRI_PLACES=134, PETRI_TRANSITIONS=185} [2024-10-11 19:53:55,630 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 44 predicate places. [2024-10-11 19:53:55,630 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 185 transitions, 1043 flow [2024-10-11 19:53:55,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.57142857142857) internal successors, (638), 14 states have internal predecessors, (638), 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 19:53:55,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:55,631 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:55,636 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 19:53:55,834 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 19:53:55,834 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:55,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:55,835 INFO L85 PathProgramCache]: Analyzing trace with hash 665546031, now seen corresponding path program 1 times [2024-10-11 19:53:55,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:55,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256454097] [2024-10-11 19:53:55,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:55,964 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 19:53:55,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:55,969 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 19:53:55,970 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 19:53:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:56,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:53:56,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:56,073 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 19:53:56,109 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 19:53:56,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-11 19:53:56,145 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-11 19:53:56,146 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 19:53:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:53:56,172 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:53:56,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:56,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256454097] [2024-10-11 19:53:56,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256454097] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:56,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:56,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:53:56,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556839867] [2024-10-11 19:53:56,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:56,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:53:56,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:56,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:53:56,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:53:56,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 96 [2024-10-11 19:53:56,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 185 transitions, 1043 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 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 19:53:56,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:56,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 96 [2024-10-11 19:53:56,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:58,064 INFO L124 PetriNetUnfolderBase]: 10349/19974 cut-off events. [2024-10-11 19:53:58,064 INFO L125 PetriNetUnfolderBase]: For 7636/7636 co-relation queries the response was YES. [2024-10-11 19:53:58,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39369 conditions, 19974 events. 10349/19974 cut-off events. For 7636/7636 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 179457 event pairs, 7183 based on Foata normal form. 0/15183 useless extension candidates. Maximal degree in co-relation 39107. Up to 13931 conditions per place. [2024-10-11 19:53:58,156 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 126 selfloop transitions, 23 changer transitions 0/181 dead transitions. [2024-10-11 19:53:58,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 181 transitions, 1333 flow [2024-10-11 19:53:58,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:53:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:53:58,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 235 transitions. [2024-10-11 19:53:58,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-10-11 19:53:58,158 INFO L175 Difference]: Start difference. First operand has 134 places, 185 transitions, 1043 flow. Second operand 5 states and 235 transitions. [2024-10-11 19:53:58,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 181 transitions, 1333 flow [2024-10-11 19:53:58,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 181 transitions, 1076 flow, removed 67 selfloop flow, removed 10 redundant places. [2024-10-11 19:53:58,181 INFO L231 Difference]: Finished difference. Result has 124 places, 181 transitions, 824 flow [2024-10-11 19:53:58,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=824, PETRI_PLACES=124, PETRI_TRANSITIONS=181} [2024-10-11 19:53:58,184 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 34 predicate places. [2024-10-11 19:53:58,185 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 181 transitions, 824 flow [2024-10-11 19:53:58,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 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 19:53:58,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:58,185 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:58,190 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 (9)] Ended with exit code 0 [2024-10-11 19:53:58,385 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 19:53:58,386 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:58,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:58,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1062555628, now seen corresponding path program 1 times [2024-10-11 19:53:58,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:58,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55627774] [2024-10-11 19:53:58,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:58,388 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 19:53:58,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:58,389 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 19:53:58,391 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 19:53:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:58,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:53:58,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:58,538 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 19:53:58,538 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:53:58,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:58,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55627774] [2024-10-11 19:53:58,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55627774] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:58,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:58,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:53:58,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653074981] [2024-10-11 19:53:58,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:58,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:53:58,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:58,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:53:58,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:53:58,612 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 96 [2024-10-11 19:53:58,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 181 transitions, 824 flow. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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 19:53:58,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:58,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 96 [2024-10-11 19:53:58,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:00,765 INFO L124 PetriNetUnfolderBase]: 16000/29841 cut-off events. [2024-10-11 19:54:00,765 INFO L125 PetriNetUnfolderBase]: For 13158/13158 co-relation queries the response was YES. [2024-10-11 19:54:00,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60637 conditions, 29841 events. 16000/29841 cut-off events. For 13158/13158 co-relation queries the response was YES. Maximal size of possible extension queue 1471. Compared 274180 event pairs, 9364 based on Foata normal form. 222/23295 useless extension candidates. Maximal degree in co-relation 60415. Up to 12111 conditions per place. [2024-10-11 19:54:00,909 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 199 selfloop transitions, 17 changer transitions 0/251 dead transitions. [2024-10-11 19:54:00,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 251 transitions, 1512 flow [2024-10-11 19:54:00,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:54:00,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:54:00,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2024-10-11 19:54:00,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7041666666666667 [2024-10-11 19:54:00,911 INFO L175 Difference]: Start difference. First operand has 124 places, 181 transitions, 824 flow. Second operand 5 states and 338 transitions. [2024-10-11 19:54:00,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 251 transitions, 1512 flow [2024-10-11 19:54:00,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 251 transitions, 1477 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:54:00,955 INFO L231 Difference]: Finished difference. Result has 127 places, 185 transitions, 862 flow [2024-10-11 19:54:00,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=862, PETRI_PLACES=127, PETRI_TRANSITIONS=185} [2024-10-11 19:54:00,955 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 37 predicate places. [2024-10-11 19:54:00,956 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 185 transitions, 862 flow [2024-10-11 19:54:00,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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 19:54:00,956 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:00,956 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:00,959 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 19:54:01,156 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 19:54:01,157 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:54:01,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:01,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1399006002, now seen corresponding path program 1 times [2024-10-11 19:54:01,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:01,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984566701] [2024-10-11 19:54:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:01,158 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 19:54:01,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:01,159 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 19:54:01,161 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 19:54:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:01,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:54:01,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:01,287 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 19:54:01,287 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:54:01,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:01,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984566701] [2024-10-11 19:54:01,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984566701] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:01,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:01,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:54:01,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436059017] [2024-10-11 19:54:01,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:01,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:54:01,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:01,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:54:01,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:54:01,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 96 [2024-10-11 19:54:01,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 185 transitions, 862 flow. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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 19:54:01,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:01,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 96 [2024-10-11 19:54:01,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:03,436 INFO L124 PetriNetUnfolderBase]: 14840/25777 cut-off events. [2024-10-11 19:54:03,436 INFO L125 PetriNetUnfolderBase]: For 19583/19583 co-relation queries the response was YES. [2024-10-11 19:54:03,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57498 conditions, 25777 events. 14840/25777 cut-off events. For 19583/19583 co-relation queries the response was YES. Maximal size of possible extension queue 1098. Compared 208508 event pairs, 9372 based on Foata normal form. 0/20638 useless extension candidates. Maximal degree in co-relation 57273. Up to 12492 conditions per place. [2024-10-11 19:54:03,563 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 229 selfloop transitions, 15 changer transitions 0/279 dead transitions. [2024-10-11 19:54:03,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 279 transitions, 1774 flow [2024-10-11 19:54:03,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:54:03,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:54:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 334 transitions. [2024-10-11 19:54:03,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6958333333333333 [2024-10-11 19:54:03,565 INFO L175 Difference]: Start difference. First operand has 127 places, 185 transitions, 862 flow. Second operand 5 states and 334 transitions. [2024-10-11 19:54:03,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 279 transitions, 1774 flow [2024-10-11 19:54:03,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 279 transitions, 1761 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:54:03,611 INFO L231 Difference]: Finished difference. Result has 132 places, 187 transitions, 895 flow [2024-10-11 19:54:03,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=895, PETRI_PLACES=132, PETRI_TRANSITIONS=187} [2024-10-11 19:54:03,613 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 42 predicate places. [2024-10-11 19:54:03,613 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 187 transitions, 895 flow [2024-10-11 19:54:03,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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 19:54:03,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:03,613 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:03,618 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 19:54:03,814 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 19:54:03,814 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:54:03,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:03,815 INFO L85 PathProgramCache]: Analyzing trace with hash 665546032, now seen corresponding path program 1 times [2024-10-11 19:54:03,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:03,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135489101] [2024-10-11 19:54:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:03,815 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 19:54:03,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:03,816 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 19:54:03,817 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 19:54:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:03,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 19:54:03,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:03,923 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 19:54:03,931 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 19:54:04,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:54:04,057 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 19:54:04,091 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 19:54:04,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-11 19:54:04,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:54:04,169 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 19:54:04,189 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:54:04,190 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 19:54:04,313 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 19:54:04,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:05,228 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 19:54:05,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:05,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135489101] [2024-10-11 19:54:05,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135489101] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:05,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:54:05,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:54:05,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261408336] [2024-10-11 19:54:05,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:05,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:54:05,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:05,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:54:05,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:54:10,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-11 19:54:15,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:54:20,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:54:24,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:54:28,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:54:31,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 96 [2024-10-11 19:54:31,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 187 transitions, 895 flow. Second operand has 14 states, 14 states have (on average 20.714285714285715) internal successors, (290), 14 states have internal predecessors, (290), 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 19:54:31,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:31,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 96 [2024-10-11 19:54:31,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand