./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:26:02,810 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:26:02,894 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:26:02,899 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:26:02,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:26:02,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:26:02,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:26:02,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:26:02,926 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:26:02,927 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:26:02,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:26:02,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:26:02,929 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:26:02,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:26:02,930 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:26:02,931 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:26:02,931 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:26:02,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:26:02,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:26:02,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:26:02,935 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:26:02,937 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:26:02,937 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:26:02,937 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:26:02,937 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:26:02,938 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:26:02,938 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:26:02,938 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:26:02,939 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:26:02,939 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:26:02,939 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:26:02,940 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:26:02,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:26:02,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:26:02,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:26:02,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:26:02,941 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:26:02,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:26:02,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:26:02,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:26:02,942 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:26:02,943 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:26:02,943 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2024-11-17 03:26:03,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:26:03,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:26:03,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:26:03,245 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:26:03,246 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:26:03,247 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2024-11-17 03:26:04,734 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:26:05,047 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:26:05,049 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2024-11-17 03:26:05,073 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656c906c4/56052675502644dcb69e5d6986427db2/FLAG9113b9eef [2024-11-17 03:26:05,309 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/656c906c4/56052675502644dcb69e5d6986427db2 [2024-11-17 03:26:05,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:26:05,313 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:26:05,314 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:26:05,314 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:26:05,319 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:26:05,320 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:26:05" (1/1) ... [2024-11-17 03:26:05,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f39d296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:05, skipping insertion in model container [2024-11-17 03:26:05,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:26:05" (1/1) ... [2024-11-17 03:26:05,372 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:26:05,811 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:05,812 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:05,812 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:05,812 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:05,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:26:05,907 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) [2024-11-17 03:26:05,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@19f7a248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:05, skipping insertion in model container [2024-11-17 03:26:05,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:26:05,908 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-17 03:26:05,910 INFO L158 Benchmark]: Toolchain (without parser) took 596.44ms. Allocated memory is still 146.8MB. Free memory was 95.1MB in the beginning and 75.8MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-17 03:26:05,911 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 146.8MB. Free memory is still 106.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 03:26:05,911 INFO L158 Benchmark]: CACSL2BoogieTranslator took 594.31ms. Allocated memory is still 146.8MB. Free memory was 95.1MB in the beginning and 76.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-17 03:26:05,913 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 146.8MB. Free memory is still 106.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 594.31ms. Allocated memory is still 146.8MB. Free memory was 95.1MB in the beginning and 76.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1038]: 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/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:26:08,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:26:08,110 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-17 03:26:08,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:26:08,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:26:08,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:26:08,166 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:26:08,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:26:08,167 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:26:08,171 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:26:08,171 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:26:08,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:26:08,172 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:26:08,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:26:08,173 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:26:08,173 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:26:08,174 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:26:08,176 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:26:08,177 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:26:08,177 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:26:08,180 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:26:08,180 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:26:08,181 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:26:08,181 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:26:08,181 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:26:08,181 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-17 03:26:08,182 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:26:08,182 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-17 03:26:08,182 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:26:08,182 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:26:08,182 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:26:08,183 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:26:08,183 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:26:08,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:26:08,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:26:08,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:26:08,184 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:26:08,184 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:26:08,186 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-17 03:26:08,186 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-17 03:26:08,187 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:26:08,187 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:26:08,187 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:26:08,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:26:08,188 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2024-11-17 03:26:08,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:26:08,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:26:08,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:26:08,531 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:26:08,531 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:26:08,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2024-11-17 03:26:10,252 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:26:10,526 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:26:10,527 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2024-11-17 03:26:10,557 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde5df240/3f0c1a4962c94877bea71d243b80f1c6/FLAGb315553d8 [2024-11-17 03:26:10,832 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde5df240/3f0c1a4962c94877bea71d243b80f1c6 [2024-11-17 03:26:10,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:26:10,835 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:26:10,841 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:26:10,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:26:10,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:26:10,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:26:10" (1/1) ... [2024-11-17 03:26:10,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee8eee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:10, skipping insertion in model container [2024-11-17 03:26:10,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:26:10" (1/1) ... [2024-11-17 03:26:10,899 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:26:11,404 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:11,405 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:11,405 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:11,408 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:11,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:26:11,516 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-17 03:26:11,525 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:26:11,565 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:11,569 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:11,569 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:11,570 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:11,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:26:11,597 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:26:11,650 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:11,654 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:11,655 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:11,655 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:11,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:26:11,743 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:26:11,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:11 WrapperNode [2024-11-17 03:26:11,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:26:11,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:26:11,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:26:11,745 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:26:11,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:11" (1/1) ... [2024-11-17 03:26:11,778 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:11" (1/1) ... [2024-11-17 03:26:11,814 INFO L138 Inliner]: procedures = 275, calls = 98, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 187 [2024-11-17 03:26:11,815 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:26:11,815 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:26:11,816 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:26:11,816 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:26:11,831 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:11" (1/1) ... [2024-11-17 03:26:11,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:11" (1/1) ... [2024-11-17 03:26:11,842 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:11" (1/1) ... [2024-11-17 03:26:11,867 INFO L175 MemorySlicer]: Split 84 memory accesses to 1 slices as follows [84]. 100 percent of accesses are in the largest equivalence class. The 70 initializations are split as follows [70]. The 10 writes are split as follows [10]. [2024-11-17 03:26:11,867 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:11" (1/1) ... [2024-11-17 03:26:11,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:11" (1/1) ... [2024-11-17 03:26:11,884 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:11" (1/1) ... [2024-11-17 03:26:11,887 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:11" (1/1) ... [2024-11-17 03:26:11,890 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:11" (1/1) ... [2024-11-17 03:26:11,892 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:11" (1/1) ... [2024-11-17 03:26:11,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:26:11,897 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:26:11,898 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:26:11,898 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:26:11,899 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:11" (1/1) ... [2024-11-17 03:26:11,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:26:11,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:26:11,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 03:26:11,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 03:26:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-17 03:26:11,977 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-17 03:26:11,977 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-17 03:26:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 03:26:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-17 03:26:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-17 03:26:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-17 03:26:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:26:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:26:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 03:26:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:26:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 03:26:11,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:26:11,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:26:11,980 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:26:12,151 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:26:12,153 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:26:12,932 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:26:12,932 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:26:14,936 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:26:14,937 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:26:14,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:26:14 BoogieIcfgContainer [2024-11-17 03:26:14,939 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:26:14,942 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:26:14,942 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:26:14,946 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:26:14,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:26:10" (1/3) ... [2024-11-17 03:26:14,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5546d441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:26:14, skipping insertion in model container [2024-11-17 03:26:14,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:11" (2/3) ... [2024-11-17 03:26:14,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5546d441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:26:14, skipping insertion in model container [2024-11-17 03:26:14,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:26:14" (3/3) ... [2024-11-17 03:26:14,951 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2024-11-17 03:26:14,968 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:26:14,969 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2024-11-17 03:26:14,969 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:26:15,067 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:26:15,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 101 transitions, 210 flow [2024-11-17 03:26:15,160 INFO L124 PetriNetUnfolderBase]: 12/99 cut-off events. [2024-11-17 03:26:15,161 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:26:15,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 99 events. 12/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 360 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2024-11-17 03:26:15,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 101 transitions, 210 flow [2024-11-17 03:26:15,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 99 transitions, 204 flow [2024-11-17 03:26:15,184 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:26:15,192 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;@2c4fea44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:26:15,193 INFO L334 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-11-17 03:26:15,204 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:26:15,204 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:26:15,205 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:26:15,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:15,206 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:26:15,206 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:15,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:15,212 INFO L85 PathProgramCache]: Analyzing trace with hash 15992083, now seen corresponding path program 1 times [2024-11-17 03:26:15,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:15,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254198698] [2024-11-17 03:26:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:15,229 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 [2024-11-17 03:26:15,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:15,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:15,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-17 03:26:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:15,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 03:26:15,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:15,510 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:15,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:15,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254198698] [2024-11-17 03:26:15,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254198698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:15,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:15,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:26:15,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407490374] [2024-11-17 03:26:15,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:15,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:26:15,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:15,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:26:15,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:26:15,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 101 [2024-11-17 03:26:15,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 99 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2024-11-17 03:26:15,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:15,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 101 [2024-11-17 03:26:15,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:16,093 INFO L124 PetriNetUnfolderBase]: 389/883 cut-off events. [2024-11-17 03:26:16,093 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-17 03:26:16,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1512 conditions, 883 events. 389/883 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5411 event pairs, 287 based on Foata normal form. 103/807 useless extension candidates. Maximal degree in co-relation 1455. Up to 606 conditions per place. [2024-11-17 03:26:16,106 INFO L140 encePairwiseOnDemand]: 88/101 looper letters, 32 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2024-11-17 03:26:16,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 254 flow [2024-11-17 03:26:16,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:26:16,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:26:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2024-11-17 03:26:16,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6658415841584159 [2024-11-17 03:26:16,171 INFO L175 Difference]: Start difference. First operand has 94 places, 99 transitions, 204 flow. Second operand 4 states and 269 transitions. [2024-11-17 03:26:16,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 254 flow [2024-11-17 03:26:16,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 89 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:26:16,182 INFO L231 Difference]: Finished difference. Result has 91 places, 89 transitions, 188 flow [2024-11-17 03:26:16,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=91, PETRI_TRANSITIONS=89} [2024-11-17 03:26:16,196 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -3 predicate places. [2024-11-17 03:26:16,199 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 89 transitions, 188 flow [2024-11-17 03:26:16,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2024-11-17 03:26:16,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:16,200 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:26:16,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-17 03:26:16,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:16,402 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:16,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:16,403 INFO L85 PathProgramCache]: Analyzing trace with hash 15992084, now seen corresponding path program 1 times [2024-11-17 03:26:16,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:16,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750412775] [2024-11-17 03:26:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:16,405 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 [2024-11-17 03:26:16,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:16,406 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:16,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-17 03:26:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:16,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 03:26:16,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:16,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:16,642 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:16,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:16,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750412775] [2024-11-17 03:26:16,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750412775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:16,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:16,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:26:16,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793769482] [2024-11-17 03:26:16,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:16,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:26:16,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:16,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:26:16,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:26:16,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 101 [2024-11-17 03:26:16,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 89 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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) [2024-11-17 03:26:16,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:16,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 101 [2024-11-17 03:26:16,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:17,336 INFO L124 PetriNetUnfolderBase]: 390/891 cut-off events. [2024-11-17 03:26:17,336 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-17 03:26:17,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 891 events. 390/891 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5316 event pairs, 287 based on Foata normal form. 3/716 useless extension candidates. Maximal degree in co-relation 1500. Up to 612 conditions per place. [2024-11-17 03:26:17,346 INFO L140 encePairwiseOnDemand]: 93/101 looper letters, 37 selfloop transitions, 5 changer transitions 0/93 dead transitions. [2024-11-17 03:26:17,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 93 transitions, 284 flow [2024-11-17 03:26:17,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:26:17,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:26:17,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 273 transitions. [2024-11-17 03:26:17,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6757425742574258 [2024-11-17 03:26:17,350 INFO L175 Difference]: Start difference. First operand has 91 places, 89 transitions, 188 flow. Second operand 4 states and 273 transitions. [2024-11-17 03:26:17,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 93 transitions, 284 flow [2024-11-17 03:26:17,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 274 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:26:17,358 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 221 flow [2024-11-17 03:26:17,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2024-11-17 03:26:17,359 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -1 predicate places. [2024-11-17 03:26:17,360 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 221 flow [2024-11-17 03:26:17,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 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) [2024-11-17 03:26:17,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:17,361 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:17,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-17 03:26:17,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:17,563 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:17,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:17,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1355039385, now seen corresponding path program 1 times [2024-11-17 03:26:17,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:17,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231409094] [2024-11-17 03:26:17,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:17,565 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 [2024-11-17 03:26:17,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:17,567 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:17,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-17 03:26:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:17,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 03:26:17,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:17,749 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 [2024-11-17 03:26:17,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:17,756 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:17,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:17,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231409094] [2024-11-17 03:26:17,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231409094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:17,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:17,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:26:17,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888446160] [2024-11-17 03:26:17,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:17,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:26:17,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:17,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:26:17,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:26:17,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 101 [2024-11-17 03:26:17,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2024-11-17 03:26:17,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:17,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 101 [2024-11-17 03:26:17,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:18,128 INFO L124 PetriNetUnfolderBase]: 390/890 cut-off events. [2024-11-17 03:26:18,128 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-17 03:26:18,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1538 conditions, 890 events. 390/890 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5312 event pairs, 287 based on Foata normal form. 0/712 useless extension candidates. Maximal degree in co-relation 1505. Up to 607 conditions per place. [2024-11-17 03:26:18,136 INFO L140 encePairwiseOnDemand]: 98/101 looper letters, 34 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-11-17 03:26:18,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 293 flow [2024-11-17 03:26:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:26:18,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:26:18,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2024-11-17 03:26:18,142 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7161716171617162 [2024-11-17 03:26:18,142 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 221 flow. Second operand 3 states and 217 transitions. [2024-11-17 03:26:18,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 293 flow [2024-11-17 03:26:18,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:26:18,146 INFO L231 Difference]: Finished difference. Result has 93 places, 92 transitions, 222 flow [2024-11-17 03:26:18,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=93, PETRI_TRANSITIONS=92} [2024-11-17 03:26:18,147 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -1 predicate places. [2024-11-17 03:26:18,147 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 92 transitions, 222 flow [2024-11-17 03:26:18,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2024-11-17 03:26:18,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:18,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:18,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-17 03:26:18,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:18,353 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:18,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:18,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1355039384, now seen corresponding path program 1 times [2024-11-17 03:26:18,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:18,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316979872] [2024-11-17 03:26:18,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:18,355 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 [2024-11-17 03:26:18,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:18,359 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:18,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-17 03:26:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:18,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 03:26:18,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:18,558 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 5 [2024-11-17 03:26:18,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:18,569 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:18,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:18,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316979872] [2024-11-17 03:26:18,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316979872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:18,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:18,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:26:18,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840246607] [2024-11-17 03:26:18,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:18,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:26:18,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:18,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:26:18,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:26:18,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 101 [2024-11-17 03:26:18,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2024-11-17 03:26:18,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:18,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 101 [2024-11-17 03:26:18,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:18,937 INFO L124 PetriNetUnfolderBase]: 390/889 cut-off events. [2024-11-17 03:26:18,937 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-17 03:26:18,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1538 conditions, 889 events. 390/889 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5309 event pairs, 287 based on Foata normal form. 0/711 useless extension candidates. Maximal degree in co-relation 1504. Up to 607 conditions per place. [2024-11-17 03:26:18,944 INFO L140 encePairwiseOnDemand]: 98/101 looper letters, 34 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2024-11-17 03:26:18,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 91 transitions, 294 flow [2024-11-17 03:26:18,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:26:18,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:26:18,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2024-11-17 03:26:18,946 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7161716171617162 [2024-11-17 03:26:18,946 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 222 flow. Second operand 3 states and 217 transitions. [2024-11-17 03:26:18,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 91 transitions, 294 flow [2024-11-17 03:26:18,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 91 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:26:18,950 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 220 flow [2024-11-17 03:26:18,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2024-11-17 03:26:18,951 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2024-11-17 03:26:18,952 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 220 flow [2024-11-17 03:26:18,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2024-11-17 03:26:18,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:18,953 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:18,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-17 03:26:19,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:19,158 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:19,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:19,158 INFO L85 PathProgramCache]: Analyzing trace with hash 943452582, now seen corresponding path program 1 times [2024-11-17 03:26:19,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:19,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23030104] [2024-11-17 03:26:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:19,160 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 [2024-11-17 03:26:19,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:19,163 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:19,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-17 03:26:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:19,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 03:26:19,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:19,308 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 [2024-11-17 03:26:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:19,321 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:19,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:19,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23030104] [2024-11-17 03:26:19,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23030104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:19,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:19,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:26:19,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975226992] [2024-11-17 03:26:19,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:19,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:26:19,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:19,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:26:19,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:26:19,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 101 [2024-11-17 03:26:19,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2024-11-17 03:26:19,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:19,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 101 [2024-11-17 03:26:19,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:19,771 INFO L124 PetriNetUnfolderBase]: 390/887 cut-off events. [2024-11-17 03:26:19,771 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-17 03:26:19,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1539 conditions, 887 events. 390/887 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5286 event pairs, 287 based on Foata normal form. 1/713 useless extension candidates. Maximal degree in co-relation 1504. Up to 607 conditions per place. [2024-11-17 03:26:19,778 INFO L140 encePairwiseOnDemand]: 94/101 looper letters, 32 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2024-11-17 03:26:19,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 294 flow [2024-11-17 03:26:19,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:26:19,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:26:19,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 312 transitions. [2024-11-17 03:26:19,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6178217821782178 [2024-11-17 03:26:19,780 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 220 flow. Second operand 5 states and 312 transitions. [2024-11-17 03:26:19,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 294 flow [2024-11-17 03:26:19,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:26:19,784 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 224 flow [2024-11-17 03:26:19,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2024-11-17 03:26:19,786 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2024-11-17 03:26:19,787 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 224 flow [2024-11-17 03:26:19,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 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) [2024-11-17 03:26:19,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:19,787 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:19,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-11-17 03:26:19,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:19,988 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:19,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:19,989 INFO L85 PathProgramCache]: Analyzing trace with hash 943452583, now seen corresponding path program 1 times [2024-11-17 03:26:19,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:19,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552156590] [2024-11-17 03:26:19,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:19,990 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 [2024-11-17 03:26:19,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:19,991 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:19,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-17 03:26:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:20,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 03:26:20,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:20,175 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 5 [2024-11-17 03:26:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:20,201 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:20,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:20,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552156590] [2024-11-17 03:26:20,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552156590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:20,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:20,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:26:20,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314109148] [2024-11-17 03:26:20,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:20,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:26:20,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:20,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:26:20,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:26:20,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 101 [2024-11-17 03:26:20,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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) [2024-11-17 03:26:20,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:20,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 101 [2024-11-17 03:26:20,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:20,679 INFO L124 PetriNetUnfolderBase]: 390/885 cut-off events. [2024-11-17 03:26:20,679 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-17 03:26:20,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541 conditions, 885 events. 390/885 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5275 event pairs, 287 based on Foata normal form. 2/712 useless extension candidates. Maximal degree in co-relation 1502. Up to 609 conditions per place. [2024-11-17 03:26:20,687 INFO L140 encePairwiseOnDemand]: 96/101 looper letters, 35 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2024-11-17 03:26:20,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 87 transitions, 298 flow [2024-11-17 03:26:20,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:26:20,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:26:20,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 265 transitions. [2024-11-17 03:26:20,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.655940594059406 [2024-11-17 03:26:20,690 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 224 flow. Second operand 4 states and 265 transitions. [2024-11-17 03:26:20,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 87 transitions, 298 flow [2024-11-17 03:26:20,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 87 transitions, 284 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:26:20,694 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 214 flow [2024-11-17 03:26:20,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2024-11-17 03:26:20,696 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -5 predicate places. [2024-11-17 03:26:20,696 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 214 flow [2024-11-17 03:26:20,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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) [2024-11-17 03:26:20,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:20,697 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:20,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-17 03:26:20,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:20,898 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:20,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:20,898 INFO L85 PathProgramCache]: Analyzing trace with hash 419201513, now seen corresponding path program 1 times [2024-11-17 03:26:20,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:20,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046707153] [2024-11-17 03:26:20,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:20,899 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 [2024-11-17 03:26:20,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:20,901 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:20,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-17 03:26:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:21,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-17 03:26:21,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:21,029 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:21,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:21,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046707153] [2024-11-17 03:26:21,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046707153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:21,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:21,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:26:21,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292349297] [2024-11-17 03:26:21,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:21,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:26:21,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:21,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:26:21,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:26:21,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 101 [2024-11-17 03:26:21,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2024-11-17 03:26:21,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:21,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 101 [2024-11-17 03:26:21,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:21,327 INFO L124 PetriNetUnfolderBase]: 389/903 cut-off events. [2024-11-17 03:26:21,330 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-17 03:26:21,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1561 conditions, 903 events. 389/903 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5320 event pairs, 287 based on Foata normal form. 2/722 useless extension candidates. Maximal degree in co-relation 1531. Up to 608 conditions per place. [2024-11-17 03:26:21,338 INFO L140 encePairwiseOnDemand]: 98/101 looper letters, 39 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2024-11-17 03:26:21,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 312 flow [2024-11-17 03:26:21,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:26:21,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:26:21,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2024-11-17 03:26:21,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.735973597359736 [2024-11-17 03:26:21,341 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 214 flow. Second operand 3 states and 223 transitions. [2024-11-17 03:26:21,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 312 flow [2024-11-17 03:26:21,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 91 transitions, 296 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-17 03:26:21,345 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 215 flow [2024-11-17 03:26:21,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2024-11-17 03:26:21,347 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -5 predicate places. [2024-11-17 03:26:21,347 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 215 flow [2024-11-17 03:26:21,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2024-11-17 03:26:21,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:21,348 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:21,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-17 03:26:21,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:21,549 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:21,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:21,549 INFO L85 PathProgramCache]: Analyzing trace with hash 419844911, now seen corresponding path program 1 times [2024-11-17 03:26:21,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:21,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241523807] [2024-11-17 03:26:21,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:21,550 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 [2024-11-17 03:26:21,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:21,551 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:21,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-17 03:26:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:22,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-17 03:26:22,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:22,114 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-17 03:26:22,115 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 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-17 03:26:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:22,183 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:22,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:22,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241523807] [2024-11-17 03:26:22,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241523807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:22,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:22,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:26:22,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953865534] [2024-11-17 03:26:22,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:22,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:26:22,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:22,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:26:22,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:26:22,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 101 [2024-11-17 03:26:22,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 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) [2024-11-17 03:26:22,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:22,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 101 [2024-11-17 03:26:22,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:22,753 INFO L124 PetriNetUnfolderBase]: 389/899 cut-off events. [2024-11-17 03:26:22,754 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-17 03:26:22,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 899 events. 389/899 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5264 event pairs, 287 based on Foata normal form. 2/722 useless extension candidates. Maximal degree in co-relation 1523. Up to 604 conditions per place. [2024-11-17 03:26:22,760 INFO L140 encePairwiseOnDemand]: 95/101 looper letters, 31 selfloop transitions, 6 changer transitions 0/85 dead transitions. [2024-11-17 03:26:22,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 285 flow [2024-11-17 03:26:22,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:26:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:26:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 320 transitions. [2024-11-17 03:26:22,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6336633663366337 [2024-11-17 03:26:22,762 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 215 flow. Second operand 5 states and 320 transitions. [2024-11-17 03:26:22,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 285 flow [2024-11-17 03:26:22,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:26:22,765 INFO L231 Difference]: Finished difference. Result has 90 places, 85 transitions, 220 flow [2024-11-17 03:26:22,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=90, PETRI_TRANSITIONS=85} [2024-11-17 03:26:22,767 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -4 predicate places. [2024-11-17 03:26:22,767 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 85 transitions, 220 flow [2024-11-17 03:26:22,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 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) [2024-11-17 03:26:22,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:22,769 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:22,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-11-17 03:26:22,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:22,970 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:22,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:22,970 INFO L85 PathProgramCache]: Analyzing trace with hash 419844912, now seen corresponding path program 1 times [2024-11-17 03:26:22,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:22,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872079323] [2024-11-17 03:26:22,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:22,971 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 [2024-11-17 03:26:22,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:22,973 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:22,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-17 03:26:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:23,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 03:26:23,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:23,551 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-17 03:26:23,551 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 [2024-11-17 03:26:23,564 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 14 treesize of output 9 [2024-11-17 03:26:23,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:23,643 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:23,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:23,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872079323] [2024-11-17 03:26:23,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872079323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:23,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:23,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:26:23,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842725913] [2024-11-17 03:26:23,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:23,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:26:23,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:23,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:26:23,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:26:24,049 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 101 [2024-11-17 03:26:24,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 85 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 57.166666666666664) internal successors, (343), 6 states have internal predecessors, (343), 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) [2024-11-17 03:26:24,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:24,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 101 [2024-11-17 03:26:24,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:24,413 INFO L124 PetriNetUnfolderBase]: 390/931 cut-off events. [2024-11-17 03:26:24,413 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-11-17 03:26:24,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1618 conditions, 931 events. 390/931 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5638 event pairs, 287 based on Foata normal form. 2/739 useless extension candidates. Maximal degree in co-relation 1525. Up to 616 conditions per place. [2024-11-17 03:26:24,420 INFO L140 encePairwiseOnDemand]: 94/101 looper letters, 40 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-11-17 03:26:24,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 342 flow [2024-11-17 03:26:24,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:26:24,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:26:24,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 326 transitions. [2024-11-17 03:26:24,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6455445544554456 [2024-11-17 03:26:24,423 INFO L175 Difference]: Start difference. First operand has 90 places, 85 transitions, 220 flow. Second operand 5 states and 326 transitions. [2024-11-17 03:26:24,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 342 flow [2024-11-17 03:26:24,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 92 transitions, 322 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:26:24,426 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 264 flow [2024-11-17 03:26:24,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2024-11-17 03:26:24,427 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -1 predicate places. [2024-11-17 03:26:24,427 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 264 flow [2024-11-17 03:26:24,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.166666666666664) internal successors, (343), 6 states have internal predecessors, (343), 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) [2024-11-17 03:26:24,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:24,428 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:24,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-17 03:26:24,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:24,628 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:24,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:24,629 INFO L85 PathProgramCache]: Analyzing trace with hash 130290913, now seen corresponding path program 1 times [2024-11-17 03:26:24,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:24,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026064897] [2024-11-17 03:26:24,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:24,630 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 [2024-11-17 03:26:24,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:24,633 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:24,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-17 03:26:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:25,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 03:26:25,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:25,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2024-11-17 03:26:25,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-17 03:26:25,394 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-17 03:26:25,395 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 [2024-11-17 03:26:25,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 25 [2024-11-17 03:26:25,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 32 treesize of output 25 [2024-11-17 03:26:25,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 18 [2024-11-17 03:26:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:25,624 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:25,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:25,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026064897] [2024-11-17 03:26:25,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026064897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:25,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:25,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 03:26:25,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022746409] [2024-11-17 03:26:25,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:25,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 03:26:25,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:25,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 03:26:25,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-17 03:26:26,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 101 [2024-11-17 03:26:26,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 264 flow. Second operand has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 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) [2024-11-17 03:26:26,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:26,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 101 [2024-11-17 03:26:26,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:27,416 INFO L124 PetriNetUnfolderBase]: 390/929 cut-off events. [2024-11-17 03:26:27,417 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-17 03:26:27,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1647 conditions, 929 events. 390/929 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5612 event pairs, 287 based on Foata normal form. 0/752 useless extension candidates. Maximal degree in co-relation 1550. Up to 621 conditions per place. [2024-11-17 03:26:27,423 INFO L140 encePairwiseOnDemand]: 90/101 looper letters, 42 selfloop transitions, 15 changer transitions 0/99 dead transitions. [2024-11-17 03:26:27,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 99 transitions, 406 flow [2024-11-17 03:26:27,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 03:26:27,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 03:26:27,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 588 transitions. [2024-11-17 03:26:27,426 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5292529252925292 [2024-11-17 03:26:27,427 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 264 flow. Second operand 11 states and 588 transitions. [2024-11-17 03:26:27,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 99 transitions, 406 flow [2024-11-17 03:26:27,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 404 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:26:27,432 INFO L231 Difference]: Finished difference. Result has 107 places, 96 transitions, 343 flow [2024-11-17 03:26:27,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=343, PETRI_PLACES=107, PETRI_TRANSITIONS=96} [2024-11-17 03:26:27,434 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 13 predicate places. [2024-11-17 03:26:27,434 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 96 transitions, 343 flow [2024-11-17 03:26:27,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 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) [2024-11-17 03:26:27,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:27,434 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:27,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-11-17 03:26:27,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:27,635 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:27,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:27,636 INFO L85 PathProgramCache]: Analyzing trace with hash 130290914, now seen corresponding path program 1 times [2024-11-17 03:26:27,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:27,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569190451] [2024-11-17 03:26:27,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:27,637 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 [2024-11-17 03:26:27,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:27,638 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:27,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-17 03:26:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:28,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-17 03:26:28,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:28,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2024-11-17 03:26:28,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2024-11-17 03:26:28,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 18 [2024-11-17 03:26:28,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 18 [2024-11-17 03:26:28,463 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-17 03:26:28,463 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 [2024-11-17 03:26:28,493 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 14 treesize of output 9 [2024-11-17 03:26:28,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-17 03:26:28,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-17 03:26:28,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-17 03:26:28,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-17 03:26:28,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-17 03:26:28,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2024-11-17 03:26:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:28,801 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:28,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:28,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569190451] [2024-11-17 03:26:28,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569190451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:28,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:28,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 03:26:28,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462856188] [2024-11-17 03:26:28,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:28,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 03:26:28,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:28,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 03:26:28,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-17 03:26:29,860 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 101 [2024-11-17 03:26:29,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 96 transitions, 343 flow. Second operand has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 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) [2024-11-17 03:26:29,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:29,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 101 [2024-11-17 03:26:29,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:30,625 INFO L124 PetriNetUnfolderBase]: 390/928 cut-off events. [2024-11-17 03:26:30,625 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-11-17 03:26:30,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 928 events. 390/928 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5604 event pairs, 287 based on Foata normal form. 1/754 useless extension candidates. Maximal degree in co-relation 1558. Up to 629 conditions per place. [2024-11-17 03:26:30,635 INFO L140 encePairwiseOnDemand]: 89/101 looper letters, 62 selfloop transitions, 11 changer transitions 0/110 dead transitions. [2024-11-17 03:26:30,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 110 transitions, 536 flow [2024-11-17 03:26:30,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 03:26:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 03:26:30,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 530 transitions. [2024-11-17 03:26:30,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47704770477047703 [2024-11-17 03:26:30,638 INFO L175 Difference]: Start difference. First operand has 107 places, 96 transitions, 343 flow. Second operand 11 states and 530 transitions. [2024-11-17 03:26:30,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 110 transitions, 536 flow [2024-11-17 03:26:30,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 110 transitions, 518 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 03:26:30,644 INFO L231 Difference]: Finished difference. Result has 116 places, 100 transitions, 386 flow [2024-11-17 03:26:30,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=386, PETRI_PLACES=116, PETRI_TRANSITIONS=100} [2024-11-17 03:26:30,645 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 22 predicate places. [2024-11-17 03:26:30,645 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 100 transitions, 386 flow [2024-11-17 03:26:30,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 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) [2024-11-17 03:26:30,646 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:30,646 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:30,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-17 03:26:30,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:30,847 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:30,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash -255948536, now seen corresponding path program 1 times [2024-11-17 03:26:30,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:30,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938749449] [2024-11-17 03:26:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:30,848 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 [2024-11-17 03:26:30,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:30,850 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:30,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-17 03:26:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:31,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 03:26:31,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:31,058 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 [2024-11-17 03:26:31,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:31,077 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:31,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:31,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938749449] [2024-11-17 03:26:31,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938749449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:31,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:31,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:26:31,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912156516] [2024-11-17 03:26:31,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:31,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:26:31,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:31,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:26:31,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:26:31,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 101 [2024-11-17 03:26:31,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 100 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2024-11-17 03:26:31,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:31,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 101 [2024-11-17 03:26:31,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:31,483 INFO L124 PetriNetUnfolderBase]: 390/920 cut-off events. [2024-11-17 03:26:31,483 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-11-17 03:26:31,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1687 conditions, 920 events. 390/920 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5541 event pairs, 287 based on Foata normal form. 0/751 useless extension candidates. Maximal degree in co-relation 1562. Up to 608 conditions per place. [2024-11-17 03:26:31,491 INFO L140 encePairwiseOnDemand]: 96/101 looper letters, 39 selfloop transitions, 12 changer transitions 0/98 dead transitions. [2024-11-17 03:26:31,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 98 transitions, 484 flow [2024-11-17 03:26:31,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:26:31,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:26:31,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 265 transitions. [2024-11-17 03:26:31,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.655940594059406 [2024-11-17 03:26:31,494 INFO L175 Difference]: Start difference. First operand has 116 places, 100 transitions, 386 flow. Second operand 4 states and 265 transitions. [2024-11-17 03:26:31,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 98 transitions, 484 flow [2024-11-17 03:26:31,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 98 transitions, 480 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:26:31,498 INFO L231 Difference]: Finished difference. Result has 115 places, 98 transitions, 402 flow [2024-11-17 03:26:31,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=402, PETRI_PLACES=115, PETRI_TRANSITIONS=98} [2024-11-17 03:26:31,499 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 21 predicate places. [2024-11-17 03:26:31,499 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 98 transitions, 402 flow [2024-11-17 03:26:31,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2024-11-17 03:26:31,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:31,500 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:31,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-11-17 03:26:31,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:31,701 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:31,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:31,701 INFO L85 PathProgramCache]: Analyzing trace with hash -255948535, now seen corresponding path program 1 times [2024-11-17 03:26:31,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:31,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043372031] [2024-11-17 03:26:31,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:31,702 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 [2024-11-17 03:26:31,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:31,703 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:31,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-17 03:26:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:31,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:26:31,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:31,886 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 5 [2024-11-17 03:26:31,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:31,928 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:31,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:31,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043372031] [2024-11-17 03:26:31,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043372031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:31,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:31,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:26:31,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091064710] [2024-11-17 03:26:31,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:31,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:26:31,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:31,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:26:31,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:26:32,079 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 101 [2024-11-17 03:26:32,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 98 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2024-11-17 03:26:32,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:32,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 101 [2024-11-17 03:26:32,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:32,356 INFO L124 PetriNetUnfolderBase]: 390/912 cut-off events. [2024-11-17 03:26:32,356 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-11-17 03:26:32,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1681 conditions, 912 events. 390/912 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5512 event pairs, 287 based on Foata normal form. 8/751 useless extension candidates. Maximal degree in co-relation 1559. Up to 608 conditions per place. [2024-11-17 03:26:32,363 INFO L140 encePairwiseOnDemand]: 96/101 looper letters, 37 selfloop transitions, 12 changer transitions 0/96 dead transitions. [2024-11-17 03:26:32,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 96 transitions, 496 flow [2024-11-17 03:26:32,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:26:32,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:26:32,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 271 transitions. [2024-11-17 03:26:32,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707920792079208 [2024-11-17 03:26:32,365 INFO L175 Difference]: Start difference. First operand has 115 places, 98 transitions, 402 flow. Second operand 4 states and 271 transitions. [2024-11-17 03:26:32,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 96 transitions, 496 flow [2024-11-17 03:26:32,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 96 transitions, 472 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:26:32,369 INFO L231 Difference]: Finished difference. Result has 113 places, 96 transitions, 398 flow [2024-11-17 03:26:32,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=398, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2024-11-17 03:26:32,370 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 19 predicate places. [2024-11-17 03:26:32,370 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 398 flow [2024-11-17 03:26:32,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2024-11-17 03:26:32,371 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:32,371 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:32,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-11-17 03:26:32,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:32,572 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:32,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:32,572 INFO L85 PathProgramCache]: Analyzing trace with hash -994736796, now seen corresponding path program 1 times [2024-11-17 03:26:32,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:32,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815413749] [2024-11-17 03:26:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:32,573 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 [2024-11-17 03:26:32,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:32,575 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:32,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-17 03:26:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:32,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 03:26:32,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:32,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:26:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:32,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:32,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815413749] [2024-11-17 03:26:32,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815413749] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:26:32,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:26:32,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-17 03:26:32,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255752218] [2024-11-17 03:26:32,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:26:32,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:26:32,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:32,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:26:32,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:26:32,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 101 [2024-11-17 03:26:32,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 398 flow. Second operand has 6 states, 6 states have (on average 64.0) internal successors, (384), 6 states have internal predecessors, (384), 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) [2024-11-17 03:26:32,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:32,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 101 [2024-11-17 03:26:32,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:33,125 INFO L124 PetriNetUnfolderBase]: 390/968 cut-off events. [2024-11-17 03:26:33,126 INFO L125 PetriNetUnfolderBase]: For 321/321 co-relation queries the response was YES. [2024-11-17 03:26:33,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1837 conditions, 968 events. 390/968 cut-off events. For 321/321 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5525 event pairs, 287 based on Foata normal form. 6/801 useless extension candidates. Maximal degree in co-relation 1635. Up to 606 conditions per place. [2024-11-17 03:26:33,134 INFO L140 encePairwiseOnDemand]: 97/101 looper letters, 56 selfloop transitions, 12 changer transitions 0/114 dead transitions. [2024-11-17 03:26:33,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 114 transitions, 682 flow [2024-11-17 03:26:33,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:26:33,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:26:33,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 419 transitions. [2024-11-17 03:26:33,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6914191419141914 [2024-11-17 03:26:33,138 INFO L175 Difference]: Start difference. First operand has 113 places, 96 transitions, 398 flow. Second operand 6 states and 419 transitions. [2024-11-17 03:26:33,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 114 transitions, 682 flow [2024-11-17 03:26:33,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 114 transitions, 630 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:26:33,142 INFO L231 Difference]: Finished difference. Result has 119 places, 102 transitions, 472 flow [2024-11-17 03:26:33,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=472, PETRI_PLACES=119, PETRI_TRANSITIONS=102} [2024-11-17 03:26:33,142 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 25 predicate places. [2024-11-17 03:26:33,143 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 102 transitions, 472 flow [2024-11-17 03:26:33,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.0) internal successors, (384), 6 states have internal predecessors, (384), 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) [2024-11-17 03:26:33,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:33,143 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:33,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-11-17 03:26:33,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:33,344 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:33,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:33,344 INFO L85 PathProgramCache]: Analyzing trace with hash -752123705, now seen corresponding path program 1 times [2024-11-17 03:26:33,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:33,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488886750] [2024-11-17 03:26:33,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:33,345 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 [2024-11-17 03:26:33,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:33,346 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:33,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-11-17 03:26:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:34,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-17 03:26:34,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:34,130 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 5 [2024-11-17 03:26:34,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-17 03:26:34,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 1 [2024-11-17 03:26:34,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 11 [2024-11-17 03:26:34,379 INFO L349 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2024-11-17 03:26:34,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2024-11-17 03:26:34,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-17 03:26:34,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 34 treesize of output 27 [2024-11-17 03:26:34,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-17 03:26:34,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20 treesize of output 15 [2024-11-17 03:26:34,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 34 treesize of output 27 [2024-11-17 03:26:34,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 26 treesize of output 19 [2024-11-17 03:26:34,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2024-11-17 03:26:34,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-17 03:26:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:34,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:26:34,738 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_580 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_580) |c_~#c~0.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_580 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_580) |c_~#c~0.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_579) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-17 03:26:34,787 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_580 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_580) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_580 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_580) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_579) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-17 03:26:34,998 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:26:35,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 45 treesize of output 38 [2024-11-17 03:26:35,025 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:26:35,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 60 treesize of output 55 [2024-11-17 03:26:35,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-17 03:26:35,127 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:26:35,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 48 treesize of output 49 [2024-11-17 03:26:35,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:26:35,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 40 treesize of output 41 [2024-11-17 03:26:35,144 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 03:26:35,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:26:35,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 38 treesize of output 41 [2024-11-17 03:26:35,173 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 03:26:35,195 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:26:35,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 30 [2024-11-17 03:26:36,563 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 03:26:36,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-17 03:26:36,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:36,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488886750] [2024-11-17 03:26:36,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488886750] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:26:36,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:26:36,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-11-17 03:26:36,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851280596] [2024-11-17 03:26:36,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:26:36,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 03:26:36,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:36,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 03:26:36,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=175, Unknown=2, NotChecked=54, Total=272 [2024-11-17 03:26:37,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 101 [2024-11-17 03:26:37,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 102 transitions, 472 flow. Second operand has 17 states, 17 states have (on average 17.235294117647058) internal successors, (293), 17 states have internal predecessors, (293), 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) [2024-11-17 03:26:37,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:37,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 101 [2024-11-17 03:26:37,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:40,369 INFO L124 PetriNetUnfolderBase]: 2199/3552 cut-off events. [2024-11-17 03:26:40,369 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2024-11-17 03:26:40,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7285 conditions, 3552 events. 2199/3552 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 20167 event pairs, 1920 based on Foata normal form. 6/2060 useless extension candidates. Maximal degree in co-relation 7052. Up to 3399 conditions per place. [2024-11-17 03:26:40,409 INFO L140 encePairwiseOnDemand]: 90/101 looper letters, 67 selfloop transitions, 27 changer transitions 0/107 dead transitions. [2024-11-17 03:26:40,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 107 transitions, 674 flow [2024-11-17 03:26:40,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 03:26:40,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-17 03:26:40,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 271 transitions. [2024-11-17 03:26:40,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2063975628332064 [2024-11-17 03:26:40,412 INFO L175 Difference]: Start difference. First operand has 119 places, 102 transitions, 472 flow. Second operand 13 states and 271 transitions. [2024-11-17 03:26:40,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 107 transitions, 674 flow [2024-11-17 03:26:40,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 107 transitions, 656 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-17 03:26:40,416 INFO L231 Difference]: Finished difference. Result has 132 places, 104 transitions, 522 flow [2024-11-17 03:26:40,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=522, PETRI_PLACES=132, PETRI_TRANSITIONS=104} [2024-11-17 03:26:40,417 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 38 predicate places. [2024-11-17 03:26:40,417 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 104 transitions, 522 flow [2024-11-17 03:26:40,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.235294117647058) internal successors, (293), 17 states have internal predecessors, (293), 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) [2024-11-17 03:26:40,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:40,418 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:40,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2024-11-17 03:26:40,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:40,618 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:40,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:40,619 INFO L85 PathProgramCache]: Analyzing trace with hash -752123706, now seen corresponding path program 1 times [2024-11-17 03:26:40,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:40,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737151680] [2024-11-17 03:26:40,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:40,620 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 [2024-11-17 03:26:40,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:40,621 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:40,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-17 03:26:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:41,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-17 03:26:41,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:41,412 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 [2024-11-17 03:26:41,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 1 [2024-11-17 03:26:41,632 INFO L349 Elim1Store]: treesize reduction 86, result has 31.2 percent of original size [2024-11-17 03:26:41,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 34 treesize of output 59 [2024-11-17 03:26:41,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 29 [2024-11-17 03:26:41,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 29 [2024-11-17 03:26:41,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 21 [2024-11-17 03:26:41,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-17 03:26:41,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:41,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:26:41,949 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_683 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_683) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-17 03:26:41,965 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_683 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_683) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-17 03:26:42,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:26:42,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 29 treesize of output 30 [2024-11-17 03:26:42,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:26:42,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 55 [2024-11-17 03:26:42,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2024-11-17 03:26:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-17 03:26:43,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:43,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737151680] [2024-11-17 03:26:43,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737151680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:26:43,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:26:43,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-11-17 03:26:43,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395790728] [2024-11-17 03:26:43,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:26:43,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 03:26:43,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:43,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 03:26:43,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=168, Unknown=3, NotChecked=54, Total=272 [2024-11-17 03:26:43,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 101 [2024-11-17 03:26:43,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 104 transitions, 522 flow. Second operand has 17 states, 17 states have (on average 23.235294117647058) internal successors, (395), 17 states have internal predecessors, (395), 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) [2024-11-17 03:26:43,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:43,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 101 [2024-11-17 03:26:43,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:45,160 INFO L124 PetriNetUnfolderBase]: 1518/2673 cut-off events. [2024-11-17 03:26:45,160 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2024-11-17 03:26:45,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5395 conditions, 2673 events. 1518/2673 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 15973 event pairs, 1287 based on Foata normal form. 0/1812 useless extension candidates. Maximal degree in co-relation 5136. Up to 2340 conditions per place. [2024-11-17 03:26:45,183 INFO L140 encePairwiseOnDemand]: 92/101 looper letters, 61 selfloop transitions, 26 changer transitions 0/106 dead transitions. [2024-11-17 03:26:45,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 106 transitions, 702 flow [2024-11-17 03:26:45,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 03:26:45,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 03:26:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 321 transitions. [2024-11-17 03:26:45,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26485148514851486 [2024-11-17 03:26:45,186 INFO L175 Difference]: Start difference. First operand has 132 places, 104 transitions, 522 flow. Second operand 12 states and 321 transitions. [2024-11-17 03:26:45,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 106 transitions, 702 flow [2024-11-17 03:26:45,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 106 transitions, 641 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-11-17 03:26:45,191 INFO L231 Difference]: Finished difference. Result has 132 places, 103 transitions, 509 flow [2024-11-17 03:26:45,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=509, PETRI_PLACES=132, PETRI_TRANSITIONS=103} [2024-11-17 03:26:45,192 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 38 predicate places. [2024-11-17 03:26:45,192 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 103 transitions, 509 flow [2024-11-17 03:26:45,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 23.235294117647058) internal successors, (395), 17 states have internal predecessors, (395), 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) [2024-11-17 03:26:45,193 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:45,193 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:45,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-11-17 03:26:45,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:45,393 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:45,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:45,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1793727829, now seen corresponding path program 2 times [2024-11-17 03:26:45,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:45,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626823578] [2024-11-17 03:26:45,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:26:45,395 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 [2024-11-17 03:26:45,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:45,396 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:45,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-17 03:26:46,124 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:26:46,124 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:26:46,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:26:46,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:46,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:26:46,317 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:46,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:46,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626823578] [2024-11-17 03:26:46,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626823578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:26:46,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:26:46,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-17 03:26:46,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660272784] [2024-11-17 03:26:46,318 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:26:46,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 03:26:46,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:46,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 03:26:46,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-17 03:26:46,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 101 [2024-11-17 03:26:46,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 103 transitions, 509 flow. Second operand has 12 states, 12 states have (on average 65.0) internal successors, (780), 12 states have internal predecessors, (780), 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) [2024-11-17 03:26:46,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:46,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 101 [2024-11-17 03:26:46,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:47,194 INFO L124 PetriNetUnfolderBase]: 390/1088 cut-off events. [2024-11-17 03:26:47,194 INFO L125 PetriNetUnfolderBase]: For 986/986 co-relation queries the response was YES. [2024-11-17 03:26:47,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2365 conditions, 1088 events. 390/1088 cut-off events. For 986/986 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5498 event pairs, 287 based on Foata normal form. 12/933 useless extension candidates. Maximal degree in co-relation 1896. Up to 606 conditions per place. [2024-11-17 03:26:47,201 INFO L140 encePairwiseOnDemand]: 97/101 looper letters, 92 selfloop transitions, 24 changer transitions 0/163 dead transitions. [2024-11-17 03:26:47,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 163 transitions, 1321 flow [2024-11-17 03:26:47,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 03:26:47,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 03:26:47,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 818 transitions. [2024-11-17 03:26:47,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6749174917491749 [2024-11-17 03:26:47,204 INFO L175 Difference]: Start difference. First operand has 132 places, 103 transitions, 509 flow. Second operand 12 states and 818 transitions. [2024-11-17 03:26:47,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 163 transitions, 1321 flow [2024-11-17 03:26:47,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 163 transitions, 1153 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-17 03:26:47,210 INFO L231 Difference]: Finished difference. Result has 139 places, 117 transitions, 701 flow [2024-11-17 03:26:47,211 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=701, PETRI_PLACES=139, PETRI_TRANSITIONS=117} [2024-11-17 03:26:47,211 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 45 predicate places. [2024-11-17 03:26:47,212 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 117 transitions, 701 flow [2024-11-17 03:26:47,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 65.0) internal successors, (780), 12 states have internal predecessors, (780), 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) [2024-11-17 03:26:47,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:47,212 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:47,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2024-11-17 03:26:47,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:47,413 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:26:47,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:47,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1711090167, now seen corresponding path program 3 times [2024-11-17 03:26:47,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:47,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767867188] [2024-11-17 03:26:47,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:26:47,415 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 [2024-11-17 03:26:47,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:47,418 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:47,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-17 03:27:04,459 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-17 03:27:04,459 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:27:04,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:27:04,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:27:04,733 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 3 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:27:04,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:27:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 3 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:27:05,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:27:05,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767867188] [2024-11-17 03:27:05,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767867188] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:27:05,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:27:05,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-17 03:27:05,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60743121] [2024-11-17 03:27:05,208 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:27:05,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 03:27:05,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:27:05,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 03:27:05,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2024-11-17 03:27:05,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 101 [2024-11-17 03:27:05,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 117 transitions, 701 flow. Second operand has 24 states, 24 states have (on average 65.5) internal successors, (1572), 24 states have internal predecessors, (1572), 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) [2024-11-17 03:27:05,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:27:05,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 101 [2024-11-17 03:27:05,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:27:07,944 INFO L124 PetriNetUnfolderBase]: 390/1352 cut-off events. [2024-11-17 03:27:07,944 INFO L125 PetriNetUnfolderBase]: For 3408/3408 co-relation queries the response was YES. [2024-11-17 03:27:07,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3235 conditions, 1352 events. 390/1352 cut-off events. For 3408/3408 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5536 event pairs, 287 based on Foata normal form. 24/1209 useless extension candidates. Maximal degree in co-relation 2323. Up to 606 conditions per place. [2024-11-17 03:27:07,954 INFO L140 encePairwiseOnDemand]: 97/101 looper letters, 164 selfloop transitions, 48 changer transitions 0/259 dead transitions. [2024-11-17 03:27:07,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 259 transitions, 2433 flow [2024-11-17 03:27:07,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 03:27:07,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 03:27:07,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1616 transitions. [2024-11-17 03:27:07,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-17 03:27:07,960 INFO L175 Difference]: Start difference. First operand has 139 places, 117 transitions, 701 flow. Second operand 24 states and 1616 transitions. [2024-11-17 03:27:07,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 259 transitions, 2433 flow [2024-11-17 03:27:07,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 259 transitions, 2421 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:27:07,972 INFO L231 Difference]: Finished difference. Result has 172 places, 143 transitions, 1257 flow [2024-11-17 03:27:07,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1257, PETRI_PLACES=172, PETRI_TRANSITIONS=143} [2024-11-17 03:27:07,973 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 78 predicate places. [2024-11-17 03:27:07,973 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 143 transitions, 1257 flow [2024-11-17 03:27:07,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 65.5) internal successors, (1572), 24 states have internal predecessors, (1572), 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) [2024-11-17 03:27:07,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:27:07,974 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:27:08,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2024-11-17 03:27:08,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:27:08,175 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-17 03:27:08,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:27:08,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1729333701, now seen corresponding path program 4 times [2024-11-17 03:27:08,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:27:08,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873936744] [2024-11-17 03:27:08,176 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 03:27:08,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:27:08,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:27:08,178 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:27:08,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process