./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d 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_24-evilcollapse_nr.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 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:40:17,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:40:18,003 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:40:18,007 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:40:18,008 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:40:18,027 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:40:18,028 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:40:18,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:40:18,029 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:40:18,029 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:40:18,030 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:40:18,030 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:40:18,031 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:40:18,031 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:40:18,031 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:40:18,032 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:40:18,032 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:40:18,033 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:40:18,033 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:40:18,033 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:40:18,034 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:40:18,034 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:40:18,035 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:40:18,035 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:40:18,035 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:40:18,035 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:40:18,036 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:40:18,036 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:40:18,036 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:40:18,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:40:18,047 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:40:18,047 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:40:18,048 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:40:18,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:40:18,048 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:40:18,049 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:40:18,049 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:40:18,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:40:18,049 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:40:18,050 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:40:18,050 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:40:18,050 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:40:18,051 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2024-11-09 10:40:18,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:40:18,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:40:18,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:40:18,337 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:40:18,337 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:40:18,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2024-11-09 10:40:19,835 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:40:20,097 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:40:20,098 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2024-11-09 10:40:20,119 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c4842a3b/66c4c735e25a41f3acf76d255a8ba69a/FLAGaea26a46d [2024-11-09 10:40:20,138 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c4842a3b/66c4c735e25a41f3acf76d255a8ba69a [2024-11-09 10:40:20,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:40:20,144 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:40:20,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:40:20,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:40:20,154 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:40:20,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:40:20" (1/1) ... [2024-11-09 10:40:20,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52f9878a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:20, skipping insertion in model container [2024-11-09 10:40:20,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:40:20" (1/1) ... [2024-11-09 10:40:20,213 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:40:20,669 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 10:40:20,669 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 10:40:20,670 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 10:40:20,671 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 10:40:20,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:40:20,772 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) [2024-11-09 10:40:20,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d0c9711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:20, skipping insertion in model container [2024-11-09 10:40:20,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:40:20,773 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-09 10:40:20,775 INFO L158 Benchmark]: Toolchain (without parser) took 630.12ms. Allocated memory is still 169.9MB. Free memory was 111.9MB in the beginning and 91.4MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 10:40:20,776 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 169.9MB. Free memory is still 135.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 10:40:20,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 626.36ms. Allocated memory is still 169.9MB. Free memory was 111.5MB in the beginning and 91.4MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 10:40:20,778 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 169.9MB. Free memory is still 135.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 626.36ms. Allocated memory is still 169.9MB. Free memory was 111.5MB in the beginning and 91.4MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1045]: 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_24-evilcollapse_nr.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 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:40:22,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:40:22,965 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-09 10:40:22,971 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:40:22,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:40:23,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:40:23,014 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:40:23,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:40:23,016 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:40:23,017 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:40:23,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:40:23,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:40:23,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:40:23,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:40:23,021 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:40:23,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:40:23,021 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:40:23,022 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:40:23,022 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:40:23,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:40:23,022 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:40:23,025 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:40:23,025 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:40:23,026 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:40:23,026 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:40:23,026 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 10:40:23,026 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:40:23,027 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 10:40:23,027 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:40:23,027 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:40:23,027 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:40:23,028 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:40:23,028 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:40:23,030 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:40:23,031 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:40:23,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:40:23,031 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:40:23,032 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:40:23,032 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-09 10:40:23,033 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 10:40:23,033 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:40:23,033 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:40:23,034 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:40:23,034 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:40:23,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2024-11-09 10:40:23,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:40:23,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:40:23,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:40:23,441 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:40:23,442 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:40:23,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2024-11-09 10:40:24,982 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:40:25,265 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:40:25,267 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2024-11-09 10:40:25,293 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08c28b8d7/9d583262875b44d88e6d5c3138fd5cbb/FLAG75a631e8f [2024-11-09 10:40:25,313 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08c28b8d7/9d583262875b44d88e6d5c3138fd5cbb [2024-11-09 10:40:25,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:40:25,318 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:40:25,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:40:25,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:40:25,327 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:40:25,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:40:25" (1/1) ... [2024-11-09 10:40:25,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77f1fec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:25, skipping insertion in model container [2024-11-09 10:40:25,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:40:25" (1/1) ... [2024-11-09 10:40:25,385 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:40:25,910 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 10:40:25,911 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 10:40:25,911 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 10:40:25,912 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 10:40:25,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:40:26,010 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-09 10:40:26,021 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:40:26,074 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 10:40:26,075 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 10:40:26,075 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 10:40:26,083 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 10:40:26,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:40:26,121 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:40:26,155 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 10:40:26,155 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 10:40:26,155 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 10:40:26,156 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-09 10:40:26,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:40:26,241 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:40:26,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26 WrapperNode [2024-11-09 10:40:26,242 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:40:26,243 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:40:26,243 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:40:26,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:40:26,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 10:40:26,285 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 10:40:26,336 INFO L138 Inliner]: procedures = 276, calls = 101, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 218 [2024-11-09 10:40:26,337 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:40:26,338 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:40:26,339 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:40:26,339 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:40:26,350 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 10:40:26,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 10:40:26,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 10:40:26,397 INFO L175 MemorySlicer]: Split 86 memory accesses to 1 slices as follows [86]. 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]. [2024-11-09 10:40:26,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 10:40:26,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 10:40:26,422 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 10:40:26,427 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 10:40:26,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 10:40:26,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 10:40:26,444 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:40:26,447 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:40:26,448 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:40:26,448 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:40:26,449 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (1/1) ... [2024-11-09 10:40:26,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:40:26,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:40:26,485 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) [2024-11-09 10:40:26,489 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 [2024-11-09 10:40:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-09 10:40:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-09 10:40:26,537 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-09 10:40:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 10:40:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-09 10:40:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-09 10:40:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-09 10:40:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 10:40:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 10:40:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 10:40:26,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:40:26,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 10:40:26,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:40:26,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:40:26,543 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:40:26,757 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:40:26,760 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:40:27,635 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:40:27,635 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:40:29,235 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:40:29,235 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 10:40:29,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:40:29 BoogieIcfgContainer [2024-11-09 10:40:29,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:40:29,239 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:40:29,239 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:40:29,242 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:40:29,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:40:25" (1/3) ... [2024-11-09 10:40:29,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24372498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:40:29, skipping insertion in model container [2024-11-09 10:40:29,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:40:26" (2/3) ... [2024-11-09 10:40:29,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24372498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:40:29, skipping insertion in model container [2024-11-09 10:40:29,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:40:29" (3/3) ... [2024-11-09 10:40:29,246 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2024-11-09 10:40:29,265 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:40:29,266 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2024-11-09 10:40:29,266 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:40:29,370 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:40:29,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 94 transitions, 196 flow [2024-11-09 10:40:29,458 INFO L124 PetriNetUnfolderBase]: 7/92 cut-off events. [2024-11-09 10:40:29,458 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:40:29,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 92 events. 7/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 319 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-11-09 10:40:29,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 94 transitions, 196 flow [2024-11-09 10:40:29,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 92 transitions, 190 flow [2024-11-09 10:40:29,480 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:40:29,490 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;@a142473, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:40:29,490 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2024-11-09 10:40:29,502 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:40:29,502 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:40:29,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:40:29,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:40:29,504 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:40:29,505 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:40:29,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:40:29,512 INFO L85 PathProgramCache]: Analyzing trace with hash 622953, now seen corresponding path program 1 times [2024-11-09 10:40:29,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:40:29,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566480997] [2024-11-09 10:40:29,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:40:29,527 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 [2024-11-09 10:40:29,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:40:29,531 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) [2024-11-09 10:40:29,532 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 [2024-11-09 10:40:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:40:29,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 10:40:29,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:40:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:40:29,783 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:40:29,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:40:29,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566480997] [2024-11-09 10:40:29,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566480997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:40:29,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:40:29,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:40:29,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160287451] [2024-11-09 10:40:29,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:40:29,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:40:29,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:40:29,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:40:29,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:40:29,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 94 [2024-11-09 10:40:29,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2024-11-09 10:40:29,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:40:29,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 94 [2024-11-09 10:40:29,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:40:30,446 INFO L124 PetriNetUnfolderBase]: 483/961 cut-off events. [2024-11-09 10:40:30,447 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 10:40:30,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1743 conditions, 961 events. 483/961 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5088 event pairs, 368 based on Foata normal form. 1/862 useless extension candidates. Maximal degree in co-relation 1678. Up to 757 conditions per place. [2024-11-09 10:40:30,458 INFO L140 encePairwiseOnDemand]: 85/94 looper letters, 39 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2024-11-09 10:40:30,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 262 flow [2024-11-09 10:40:30,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:40:30,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:40:30,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-11-09 10:40:30,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-11-09 10:40:30,516 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 190 flow. Second operand 4 states and 232 transitions. [2024-11-09 10:40:30,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 262 flow [2024-11-09 10:40:30,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 86 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:40:30,531 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 182 flow [2024-11-09 10:40:30,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2024-11-09 10:40:30,546 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -5 predicate places. [2024-11-09 10:40:30,547 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 182 flow [2024-11-09 10:40:30,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2024-11-09 10:40:30,547 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:40:30,548 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:40:30,560 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 [2024-11-09 10:40:30,748 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 [2024-11-09 10:40:30,749 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:40:30,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:40:30,750 INFO L85 PathProgramCache]: Analyzing trace with hash 622954, now seen corresponding path program 1 times [2024-11-09 10:40:30,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:40:30,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872785081] [2024-11-09 10:40:30,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:40:30,751 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 [2024-11-09 10:40:30,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:40:30,754 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) [2024-11-09 10:40:30,756 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 [2024-11-09 10:40:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:40:30,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 10:40:30,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:40:30,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:40:30,942 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:40:30,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:40:30,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872785081] [2024-11-09 10:40:30,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872785081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:40:30,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:40:30,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:40:30,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064379273] [2024-11-09 10:40:30,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:40:30,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:40:30,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:40:30,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:40:30,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:40:31,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 94 [2024-11-09 10:40:31,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2024-11-09 10:40:31,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:40:31,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 94 [2024-11-09 10:40:31,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:40:31,618 INFO L124 PetriNetUnfolderBase]: 484/966 cut-off events. [2024-11-09 10:40:31,618 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:40:31,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1758 conditions, 966 events. 484/966 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5050 event pairs, 368 based on Foata normal form. 3/870 useless extension candidates. Maximal degree in co-relation 1730. Up to 762 conditions per place. [2024-11-09 10:40:31,628 INFO L140 encePairwiseOnDemand]: 86/94 looper letters, 43 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2024-11-09 10:40:31,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 90 transitions, 290 flow [2024-11-09 10:40:31,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:40:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:40:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-11-09 10:40:31,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6675531914893617 [2024-11-09 10:40:31,632 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 182 flow. Second operand 4 states and 251 transitions. [2024-11-09 10:40:31,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 90 transitions, 290 flow [2024-11-09 10:40:31,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 90 transitions, 280 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:40:31,638 INFO L231 Difference]: Finished difference. Result has 89 places, 90 transitions, 215 flow [2024-11-09 10:40:31,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=215, PETRI_PLACES=89, PETRI_TRANSITIONS=90} [2024-11-09 10:40:31,642 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -3 predicate places. [2024-11-09 10:40:31,643 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 90 transitions, 215 flow [2024-11-09 10:40:31,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 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) [2024-11-09 10:40:31,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:40:31,643 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 10:40:31,649 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 [2024-11-09 10:40:31,844 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 [2024-11-09 10:40:31,844 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:40:31,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:40:31,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1379100049, now seen corresponding path program 1 times [2024-11-09 10:40:31,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:40:31,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901767697] [2024-11-09 10:40:31,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:40:31,846 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 [2024-11-09 10:40:31,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:40:31,848 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) [2024-11-09 10:40:31,849 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 [2024-11-09 10:40:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:40:32,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 10:40:32,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:40:32,049 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 [2024-11-09 10:40:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:40:32,060 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:40:32,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:40:32,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901767697] [2024-11-09 10:40:32,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901767697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:40:32,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:40:32,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:40:32,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056074375] [2024-11-09 10:40:32,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:40:32,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:40:32,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:40:32,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:40:32,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:40:32,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 94 [2024-11-09 10:40:32,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 90 transitions, 215 flow. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2024-11-09 10:40:32,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:40:32,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 94 [2024-11-09 10:40:32,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:40:32,480 INFO L124 PetriNetUnfolderBase]: 484/965 cut-off events. [2024-11-09 10:40:32,480 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 10:40:32,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 965 events. 484/965 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5044 event pairs, 368 based on Foata normal form. 0/865 useless extension candidates. Maximal degree in co-relation 1736. Up to 758 conditions per place. [2024-11-09 10:40:32,489 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 41 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2024-11-09 10:40:32,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 89 transitions, 301 flow [2024-11-09 10:40:32,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:40:32,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:40:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 200 transitions. [2024-11-09 10:40:32,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7092198581560284 [2024-11-09 10:40:32,517 INFO L175 Difference]: Start difference. First operand has 89 places, 90 transitions, 215 flow. Second operand 3 states and 200 transitions. [2024-11-09 10:40:32,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 89 transitions, 301 flow [2024-11-09 10:40:32,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:40:32,520 INFO L231 Difference]: Finished difference. Result has 89 places, 89 transitions, 216 flow [2024-11-09 10:40:32,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=87, 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=3, PETRI_FLOW=216, PETRI_PLACES=89, PETRI_TRANSITIONS=89} [2024-11-09 10:40:32,523 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -3 predicate places. [2024-11-09 10:40:32,524 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 89 transitions, 216 flow [2024-11-09 10:40:32,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2024-11-09 10:40:32,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:40:32,524 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 10:40:32,531 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 (4)] Ended with exit code 0 [2024-11-09 10:40:32,728 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 [2024-11-09 10:40:32,729 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:40:32,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:40:32,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1379100050, now seen corresponding path program 1 times [2024-11-09 10:40:32,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:40:32,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838273570] [2024-11-09 10:40:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:40:32,732 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 [2024-11-09 10:40:32,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:40:32,735 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) [2024-11-09 10:40:32,736 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 [2024-11-09 10:40:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:40:32,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 10:40:32,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:40:32,886 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 [2024-11-09 10:40:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:40:32,897 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:40:32,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:40:32,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838273570] [2024-11-09 10:40:32,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838273570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:40:32,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:40:32,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:40:32,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684935998] [2024-11-09 10:40:32,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:40:32,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:40:32,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:40:32,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:40:32,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:40:33,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 94 [2024-11-09 10:40:33,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 89 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2024-11-09 10:40:33,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:40:33,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 94 [2024-11-09 10:40:33,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:40:33,314 INFO L124 PetriNetUnfolderBase]: 484/964 cut-off events. [2024-11-09 10:40:33,314 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 10:40:33,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 964 events. 484/964 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5035 event pairs, 368 based on Foata normal form. 0/866 useless extension candidates. Maximal degree in co-relation 1735. Up to 758 conditions per place. [2024-11-09 10:40:33,323 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 41 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2024-11-09 10:40:33,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 88 transitions, 302 flow [2024-11-09 10:40:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:40:33,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:40:33,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 200 transitions. [2024-11-09 10:40:33,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7092198581560284 [2024-11-09 10:40:33,325 INFO L175 Difference]: Start difference. First operand has 89 places, 89 transitions, 216 flow. Second operand 3 states and 200 transitions. [2024-11-09 10:40:33,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 88 transitions, 302 flow [2024-11-09 10:40:33,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:40:33,327 INFO L231 Difference]: Finished difference. Result has 88 places, 88 transitions, 214 flow [2024-11-09 10:40:33,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=88, PETRI_TRANSITIONS=88} [2024-11-09 10:40:33,328 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -4 predicate places. [2024-11-09 10:40:33,329 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 88 transitions, 214 flow [2024-11-09 10:40:33,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2024-11-09 10:40:33,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:40:33,329 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:40:33,335 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 [2024-11-09 10:40:33,531 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 [2024-11-09 10:40:33,531 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:40:33,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:40:33,533 INFO L85 PathProgramCache]: Analyzing trace with hash -197570811, now seen corresponding path program 1 times [2024-11-09 10:40:33,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:40:33,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539143969] [2024-11-09 10:40:33,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:40:33,535 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 [2024-11-09 10:40:33,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:40:33,539 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) [2024-11-09 10:40:33,541 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 [2024-11-09 10:40:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:40:33,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 10:40:33,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:40:33,705 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 [2024-11-09 10:40:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:40:33,736 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:40:33,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:40:33,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539143969] [2024-11-09 10:40:33,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539143969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:40:33,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:40:33,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:40:33,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295637780] [2024-11-09 10:40:33,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:40:33,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:40:33,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:40:33,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:40:33,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:40:33,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2024-11-09 10:40:33,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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) [2024-11-09 10:40:33,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:40:33,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2024-11-09 10:40:33,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:40:34,293 INFO L124 PetriNetUnfolderBase]: 484/962 cut-off events. [2024-11-09 10:40:34,293 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 10:40:34,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 962 events. 484/962 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5032 event pairs, 368 based on Foata normal form. 2/867 useless extension candidates. Maximal degree in co-relation 1733. Up to 760 conditions per place. [2024-11-09 10:40:34,302 INFO L140 encePairwiseOnDemand]: 89/94 looper letters, 42 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2024-11-09 10:40:34,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 302 flow [2024-11-09 10:40:34,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:40:34,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:40:34,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2024-11-09 10:40:34,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-11-09 10:40:34,304 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 214 flow. Second operand 4 states and 240 transitions. [2024-11-09 10:40:34,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 302 flow [2024-11-09 10:40:34,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 86 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:40:34,307 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 212 flow [2024-11-09 10:40:34,307 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2024-11-09 10:40:34,308 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -5 predicate places. [2024-11-09 10:40:34,308 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 212 flow [2024-11-09 10:40:34,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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) [2024-11-09 10:40:34,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:40:34,308 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:40:34,315 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 (6)] Ended with exit code 0 [2024-11-09 10:40:34,509 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 [2024-11-09 10:40:34,509 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:40:34,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:40:34,510 INFO L85 PathProgramCache]: Analyzing trace with hash -197570812, now seen corresponding path program 1 times [2024-11-09 10:40:34,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:40:34,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481833524] [2024-11-09 10:40:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:40:34,511 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 [2024-11-09 10:40:34,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:40:34,513 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) [2024-11-09 10:40:34,514 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 [2024-11-09 10:40:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:40:34,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 10:40:34,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:40:34,687 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 [2024-11-09 10:40:34,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:40:34,710 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:40:34,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:40:34,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481833524] [2024-11-09 10:40:34,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481833524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:40:34,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:40:34,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:40:34,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412593308] [2024-11-09 10:40:34,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:40:34,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:40:34,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:40:34,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:40:34,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:40:34,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 94 [2024-11-09 10:40:34,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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) [2024-11-09 10:40:34,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:40:34,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 94 [2024-11-09 10:40:34,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:40:35,128 INFO L124 PetriNetUnfolderBase]: 484/960 cut-off events. [2024-11-09 10:40:35,128 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:40:35,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 960 events. 484/960 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5017 event pairs, 368 based on Foata normal form. 1/866 useless extension candidates. Maximal degree in co-relation 1734. Up to 758 conditions per place. [2024-11-09 10:40:35,135 INFO L140 encePairwiseOnDemand]: 87/94 looper letters, 39 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2024-11-09 10:40:35,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 300 flow [2024-11-09 10:40:35,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:40:35,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:40:35,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 279 transitions. [2024-11-09 10:40:35,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5936170212765958 [2024-11-09 10:40:35,137 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 212 flow. Second operand 5 states and 279 transitions. [2024-11-09 10:40:35,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 300 flow [2024-11-09 10:40:35,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 84 transitions, 292 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:40:35,139 INFO L231 Difference]: Finished difference. Result has 86 places, 84 transitions, 214 flow [2024-11-09 10:40:35,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=86, PETRI_TRANSITIONS=84} [2024-11-09 10:40:35,140 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -6 predicate places. [2024-11-09 10:40:35,140 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 84 transitions, 214 flow [2024-11-09 10:40:35,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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) [2024-11-09 10:40:35,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:40:35,141 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 10:40:35,150 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 (7)] Ended with exit code 0 [2024-11-09 10:40:35,341 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 [2024-11-09 10:40:35,342 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:40:35,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:40:35,343 INFO L85 PathProgramCache]: Analyzing trace with hash -197569169, now seen corresponding path program 1 times [2024-11-09 10:40:35,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:40:35,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169746609] [2024-11-09 10:40:35,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:40:35,343 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 [2024-11-09 10:40:35,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:40:35,344 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) [2024-11-09 10:40:35,346 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 [2024-11-09 10:40:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:40:35,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 10:40:35,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:40:35,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:40:35,469 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:40:35,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:40:35,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169746609] [2024-11-09 10:40:35,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169746609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:40:35,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:40:35,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:40:35,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227429733] [2024-11-09 10:40:35,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:40:35,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:40:35,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:40:35,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:40:35,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:40:35,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 94 [2024-11-09 10:40:35,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2024-11-09 10:40:35,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:40:35,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 94 [2024-11-09 10:40:35,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:40:35,763 INFO L124 PetriNetUnfolderBase]: 483/978 cut-off events. [2024-11-09 10:40:35,763 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 10:40:35,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1792 conditions, 978 events. 483/978 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5034 event pairs, 368 based on Foata normal form. 2/877 useless extension candidates. Maximal degree in co-relation 1761. Up to 758 conditions per place. [2024-11-09 10:40:35,770 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 45 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2024-11-09 10:40:35,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 88 transitions, 324 flow [2024-11-09 10:40:35,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:40:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:40:35,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2024-11-09 10:40:35,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7375886524822695 [2024-11-09 10:40:35,772 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 214 flow. Second operand 3 states and 208 transitions. [2024-11-09 10:40:35,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 88 transitions, 324 flow [2024-11-09 10:40:35,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 88 transitions, 304 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:40:35,775 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 211 flow [2024-11-09 10:40:35,775 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2024-11-09 10:40:35,776 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -7 predicate places. [2024-11-09 10:40:35,776 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 211 flow [2024-11-09 10:40:35,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2024-11-09 10:40:35,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:40:35,776 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:40:35,783 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 (8)] Forceful destruction successful, exit code 0 [2024-11-09 10:40:35,977 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 [2024-11-09 10:40:35,977 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:40:35,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:40:35,978 INFO L85 PathProgramCache]: Analyzing trace with hash -886971985, now seen corresponding path program 1 times [2024-11-09 10:40:35,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:40:35,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075763576] [2024-11-09 10:40:35,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:40:35,979 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 [2024-11-09 10:40:35,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:40:35,982 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) [2024-11-09 10:40:35,983 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 [2024-11-09 10:40:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:40:36,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 10:40:36,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:40:36,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 10:40:36,548 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 [2024-11-09 10:40:36,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:40:36,648 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:40:36,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:40:36,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075763576] [2024-11-09 10:40:36,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075763576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:40:36,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:40:36,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:40:36,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557565847] [2024-11-09 10:40:36,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:40:36,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:40:36,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:40:36,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:40:36,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:40:36,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2024-11-09 10:40:36,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 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) [2024-11-09 10:40:36,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:40:36,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2024-11-09 10:40:36,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:40:37,346 INFO L124 PetriNetUnfolderBase]: 484/1012 cut-off events. [2024-11-09 10:40:37,346 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-09 10:40:37,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1842 conditions, 1012 events. 484/1012 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5395 event pairs, 368 based on Foata normal form. 2/901 useless extension candidates. Maximal degree in co-relation 1754. Up to 766 conditions per place. [2024-11-09 10:40:37,355 INFO L140 encePairwiseOnDemand]: 88/94 looper letters, 48 selfloop transitions, 5 changer transitions 0/91 dead transitions. [2024-11-09 10:40:37,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 91 transitions, 342 flow [2024-11-09 10:40:37,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:40:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:40:37,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2024-11-09 10:40:37,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.648936170212766 [2024-11-09 10:40:37,358 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 211 flow. Second operand 4 states and 244 transitions. [2024-11-09 10:40:37,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 91 transitions, 342 flow [2024-11-09 10:40:37,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 338 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:40:37,360 INFO L231 Difference]: Finished difference. Result has 89 places, 88 transitions, 254 flow [2024-11-09 10:40:37,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=89, PETRI_TRANSITIONS=88} [2024-11-09 10:40:37,361 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -3 predicate places. [2024-11-09 10:40:37,361 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 88 transitions, 254 flow [2024-11-09 10:40:37,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.4) internal successors, (247), 5 states have internal predecessors, (247), 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) [2024-11-09 10:40:37,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:40:37,362 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:40:37,370 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 (9)] Ended with exit code 0 [2024-11-09 10:40:37,562 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 [2024-11-09 10:40:37,563 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:40:37,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:40:37,564 INFO L85 PathProgramCache]: Analyzing trace with hash -886971986, now seen corresponding path program 1 times [2024-11-09 10:40:37,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:40:37,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648615585] [2024-11-09 10:40:37,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:40:37,565 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 [2024-11-09 10:40:37,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:40:37,568 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) [2024-11-09 10:40:37,570 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 [2024-11-09 10:40:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:40:38,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:40:38,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:40:38,098 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-09 10:40:38,099 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 [2024-11-09 10:40:38,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:40:38,167 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:40:38,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:40:38,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648615585] [2024-11-09 10:40:38,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648615585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:40:38,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:40:38,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:40:38,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812507739] [2024-11-09 10:40:38,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:40:38,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:40:38,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:40:38,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:40:38,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:40:38,300 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 94 [2024-11-09 10:40:38,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 88 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-11-09 10:40:38,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:40:38,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 94 [2024-11-09 10:40:38,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:40:38,698 INFO L124 PetriNetUnfolderBase]: 484/1004 cut-off events. [2024-11-09 10:40:38,699 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-11-09 10:40:38,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1850 conditions, 1004 events. 484/1004 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5338 event pairs, 368 based on Foata normal form. 4/897 useless extension candidates. Maximal degree in co-relation 1770. Up to 766 conditions per place. [2024-11-09 10:40:38,707 INFO L140 encePairwiseOnDemand]: 89/94 looper letters, 41 selfloop transitions, 7 changer transitions 0/86 dead transitions. [2024-11-09 10:40:38,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 346 flow [2024-11-09 10:40:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:40:38,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:40:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 234 transitions. [2024-11-09 10:40:38,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6223404255319149 [2024-11-09 10:40:38,710 INFO L175 Difference]: Start difference. First operand has 89 places, 88 transitions, 254 flow. Second operand 4 states and 234 transitions. [2024-11-09 10:40:38,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 86 transitions, 346 flow [2024-11-09 10:40:38,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 344 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:40:38,716 INFO L231 Difference]: Finished difference. Result has 89 places, 86 transitions, 262 flow [2024-11-09 10:40:38,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=89, PETRI_TRANSITIONS=86} [2024-11-09 10:40:38,717 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -3 predicate places. [2024-11-09 10:40:38,717 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 86 transitions, 262 flow [2024-11-09 10:40:38,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2024-11-09 10:40:38,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:40:38,718 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:40:38,727 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 (10)] Forceful destruction successful, exit code 0 [2024-11-09 10:40:38,919 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 [2024-11-09 10:40:38,919 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:40:38,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:40:38,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1726327097, now seen corresponding path program 1 times [2024-11-09 10:40:38,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:40:38,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867112501] [2024-11-09 10:40:38,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:40:38,921 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 [2024-11-09 10:40:38,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:40:38,924 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) [2024-11-09 10:40:38,925 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 [2024-11-09 10:40:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:40:39,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 10:40:39,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:40:39,559 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 [2024-11-09 10:40:39,621 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 [2024-11-09 10:40:39,703 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 10:40:39,703 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 [2024-11-09 10:40:39,767 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 [2024-11-09 10:40:39,830 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 [2024-11-09 10:40:39,866 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 [2024-11-09 10:40:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:40:39,942 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:40:39,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:40:39,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867112501] [2024-11-09 10:40:39,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867112501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:40:39,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:40:39,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 10:40:39,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500094392] [2024-11-09 10:40:39,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:40:39,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 10:40:39,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:40:39,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 10:40:39,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-09 10:40:41,047 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 94 [2024-11-09 10:40:41,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 86 transitions, 262 flow. Second operand has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 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) [2024-11-09 10:40:41,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:40:41,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 94 [2024-11-09 10:40:41,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:40:42,000 INFO L124 PetriNetUnfolderBase]: 484/1002 cut-off events. [2024-11-09 10:40:42,001 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-09 10:40:42,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 1002 events. 484/1002 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5296 event pairs, 368 based on Foata normal form. 0/905 useless extension candidates. Maximal degree in co-relation 1771. Up to 772 conditions per place. [2024-11-09 10:40:42,006 INFO L140 encePairwiseOnDemand]: 83/94 looper letters, 48 selfloop transitions, 15 changer transitions 0/95 dead transitions. [2024-11-09 10:40:42,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 95 transitions, 418 flow [2024-11-09 10:40:42,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:40:42,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:40:42,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 485 transitions. [2024-11-09 10:40:42,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4690522243713733 [2024-11-09 10:40:42,009 INFO L175 Difference]: Start difference. First operand has 89 places, 86 transitions, 262 flow. Second operand 11 states and 485 transitions. [2024-11-09 10:40:42,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 95 transitions, 418 flow [2024-11-09 10:40:42,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 95 transitions, 400 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:40:42,012 INFO L231 Difference]: Finished difference. Result has 101 places, 92 transitions, 327 flow [2024-11-09 10:40:42,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=327, PETRI_PLACES=101, PETRI_TRANSITIONS=92} [2024-11-09 10:40:42,012 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 9 predicate places. [2024-11-09 10:40:42,013 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 92 transitions, 327 flow [2024-11-09 10:40:42,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 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) [2024-11-09 10:40:42,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:40:42,013 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:40:42,019 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 (11)] Forceful destruction successful, exit code 0 [2024-11-09 10:40:42,213 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 [2024-11-09 10:40:42,214 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:40:42,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:40:42,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1726327096, now seen corresponding path program 1 times [2024-11-09 10:40:42,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:40:42,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219173951] [2024-11-09 10:40:42,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:40:42,215 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 [2024-11-09 10:40:42,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:40:42,216 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) [2024-11-09 10:40:42,217 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 [2024-11-09 10:40:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:40:42,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 10:40:42,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:40:42,900 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 [2024-11-09 10:40:42,917 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 [2024-11-09 10:40:42,967 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 [2024-11-09 10:40:42,981 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 [2024-11-09 10:40:43,046 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 10:40:43,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-09 10:40:43,069 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 10:40:43,069 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 [2024-11-09 10:40:43,135 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 [2024-11-09 10:40:43,148 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 [2024-11-09 10:40:43,210 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 [2024-11-09 10:40:43,219 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 [2024-11-09 10:40:43,263 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 [2024-11-09 10:40:43,270 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 [2024-11-09 10:40:43,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:40:43,348 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:40:43,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:40:43,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219173951] [2024-11-09 10:40:43,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219173951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:40:43,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:40:43,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 10:40:43,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906918677] [2024-11-09 10:40:43,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:40:43,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 10:40:43,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:40:43,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 10:40:43,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-09 10:40:44,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 94 [2024-11-09 10:40:44,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 327 flow. Second operand has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 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) [2024-11-09 10:40:44,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:40:44,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 94 [2024-11-09 10:40:44,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:40:45,173 INFO L124 PetriNetUnfolderBase]: 484/1001 cut-off events. [2024-11-09 10:40:45,173 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-11-09 10:40:45,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 1001 events. 484/1001 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5344 event pairs, 368 based on Foata normal form. 1/908 useless extension candidates. Maximal degree in co-relation 1785. Up to 779 conditions per place. [2024-11-09 10:40:45,182 INFO L140 encePairwiseOnDemand]: 82/94 looper letters, 68 selfloop transitions, 11 changer transitions 0/107 dead transitions. [2024-11-09 10:40:45,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 107 transitions, 538 flow [2024-11-09 10:40:45,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:40:45,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:40:45,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 437 transitions. [2024-11-09 10:40:45,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42263056092843326 [2024-11-09 10:40:45,186 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 327 flow. Second operand 11 states and 437 transitions. [2024-11-09 10:40:45,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 107 transitions, 538 flow [2024-11-09 10:40:45,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 107 transitions, 520 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 10:40:45,191 INFO L231 Difference]: Finished difference. Result has 110 places, 96 transitions, 370 flow [2024-11-09 10:40:45,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=370, PETRI_PLACES=110, PETRI_TRANSITIONS=96} [2024-11-09 10:40:45,195 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 18 predicate places. [2024-11-09 10:40:45,195 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 96 transitions, 370 flow [2024-11-09 10:40:45,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 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) [2024-11-09 10:40:45,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:40:45,196 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:40:45,206 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 [2024-11-09 10:40:45,396 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 [2024-11-09 10:40:45,397 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:40:45,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:40:45,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1976531860, now seen corresponding path program 1 times [2024-11-09 10:40:45,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:40:45,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93913141] [2024-11-09 10:40:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:40:45,398 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 [2024-11-09 10:40:45,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:40:45,401 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) [2024-11-09 10:40:45,402 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 [2024-11-09 10:40:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:40:45,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 10:40:45,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:40:45,567 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 [2024-11-09 10:40:45,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:40:45,606 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:40:45,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:40:45,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93913141] [2024-11-09 10:40:45,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93913141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:40:45,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:40:45,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:40:45,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381437584] [2024-11-09 10:40:45,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:40:45,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:40:45,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:40:45,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:40:45,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:40:45,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 94 [2024-11-09 10:40:45,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 96 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2024-11-09 10:40:45,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:40:45,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 94 [2024-11-09 10:40:45,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:40:46,075 INFO L124 PetriNetUnfolderBase]: 484/993 cut-off events. [2024-11-09 10:40:46,075 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2024-11-09 10:40:46,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1901 conditions, 993 events. 484/993 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5248 event pairs, 368 based on Foata normal form. 8/904 useless extension candidates. Maximal degree in co-relation 1787. Up to 759 conditions per place. [2024-11-09 10:40:46,084 INFO L140 encePairwiseOnDemand]: 89/94 looper letters, 44 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2024-11-09 10:40:46,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 94 transitions, 476 flow [2024-11-09 10:40:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:40:46,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:40:46,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 246 transitions. [2024-11-09 10:40:46,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6542553191489362 [2024-11-09 10:40:46,088 INFO L175 Difference]: Start difference. First operand has 110 places, 96 transitions, 370 flow. Second operand 4 states and 246 transitions. [2024-11-09 10:40:46,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 94 transitions, 476 flow [2024-11-09 10:40:46,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 94 transitions, 472 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:40:46,092 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 384 flow [2024-11-09 10:40:46,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=384, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2024-11-09 10:40:46,093 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 17 predicate places. [2024-11-09 10:40:46,095 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 384 flow [2024-11-09 10:40:46,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2024-11-09 10:40:46,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:40:46,096 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:40:46,101 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 [2024-11-09 10:40:46,296 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 [2024-11-09 10:40:46,296 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:40:46,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:40:46,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1976531861, now seen corresponding path program 1 times [2024-11-09 10:40:46,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:40:46,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582246485] [2024-11-09 10:40:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:40:46,297 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 [2024-11-09 10:40:46,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:40:46,299 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) [2024-11-09 10:40:46,300 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 [2024-11-09 10:40:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:40:46,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 10:40:46,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:40:46,464 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 [2024-11-09 10:40:46,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:40:46,487 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 10:40:46,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:40:46,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582246485] [2024-11-09 10:40:46,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582246485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:40:46,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:40:46,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:40:46,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786252887] [2024-11-09 10:40:46,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:40:46,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:40:46,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:40:46,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:40:46,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:40:46,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2024-11-09 10:40:46,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 94 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2024-11-09 10:40:46,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:40:46,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2024-11-09 10:40:46,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:40:46,844 INFO L124 PetriNetUnfolderBase]: 484/985 cut-off events. [2024-11-09 10:40:46,844 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-11-09 10:40:46,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 985 events. 484/985 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5183 event pairs, 368 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 1791. Up to 759 conditions per place. [2024-11-09 10:40:46,850 INFO L140 encePairwiseOnDemand]: 89/94 looper letters, 46 selfloop transitions, 11 changer transitions 0/92 dead transitions. [2024-11-09 10:40:46,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 92 transitions, 494 flow [2024-11-09 10:40:46,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:40:46,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:40:46,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2024-11-09 10:40:46,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-11-09 10:40:46,852 INFO L175 Difference]: Start difference. First operand has 109 places, 94 transitions, 384 flow. Second operand 4 states and 240 transitions. [2024-11-09 10:40:46,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 92 transitions, 494 flow [2024-11-09 10:40:46,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 92 transitions, 472 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:40:46,856 INFO L231 Difference]: Finished difference. Result has 107 places, 92 transitions, 380 flow [2024-11-09 10:40:46,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=380, PETRI_PLACES=107, PETRI_TRANSITIONS=92} [2024-11-09 10:40:46,856 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 15 predicate places. [2024-11-09 10:40:46,857 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 92 transitions, 380 flow [2024-11-09 10:40:46,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2024-11-09 10:40:46,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:40:46,857 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:40:46,864 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 [2024-11-09 10:40:47,057 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 [2024-11-09 10:40:47,058 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:40:47,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:40:47,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1797855862, now seen corresponding path program 1 times [2024-11-09 10:40:47,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:40:47,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242569975] [2024-11-09 10:40:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:40:47,059 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 [2024-11-09 10:40:47,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:40:47,060 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) [2024-11-09 10:40:47,061 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 [2024-11-09 10:40:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:40:47,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 10:40:47,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:40:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:40:47,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:40:47,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:40:47,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:40:47,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242569975] [2024-11-09 10:40:47,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242569975] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:40:47,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:40:47,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-09 10:40:47,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646666206] [2024-11-09 10:40:47,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:40:47,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:40:47,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:40:47,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:40:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:40:47,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 94 [2024-11-09 10:40:47,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 92 transitions, 380 flow. Second operand has 6 states, 6 states have (on average 56.833333333333336) internal successors, (341), 6 states have internal predecessors, (341), 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) [2024-11-09 10:40:47,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:40:47,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 94 [2024-11-09 10:40:47,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:40:47,729 INFO L124 PetriNetUnfolderBase]: 484/1035 cut-off events. [2024-11-09 10:40:47,729 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-11-09 10:40:47,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2045 conditions, 1035 events. 484/1035 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5246 event pairs, 368 based on Foata normal form. 6/948 useless extension candidates. Maximal degree in co-relation 1856. Up to 755 conditions per place. [2024-11-09 10:40:47,743 INFO L140 encePairwiseOnDemand]: 90/94 looper letters, 59 selfloop transitions, 11 changer transitions 0/107 dead transitions. [2024-11-09 10:40:47,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 107 transitions, 632 flow [2024-11-09 10:40:47,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:40:47,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:40:47,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 383 transitions. [2024-11-09 10:40:47,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6790780141843972 [2024-11-09 10:40:47,745 INFO L175 Difference]: Start difference. First operand has 107 places, 92 transitions, 380 flow. Second operand 6 states and 383 transitions. [2024-11-09 10:40:47,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 107 transitions, 632 flow [2024-11-09 10:40:47,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 107 transitions, 588 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:40:47,749 INFO L231 Difference]: Finished difference. Result has 113 places, 97 transitions, 446 flow [2024-11-09 10:40:47,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=446, PETRI_PLACES=113, PETRI_TRANSITIONS=97} [2024-11-09 10:40:47,751 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 21 predicate places. [2024-11-09 10:40:47,751 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 97 transitions, 446 flow [2024-11-09 10:40:47,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.833333333333336) internal successors, (341), 6 states have internal predecessors, (341), 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) [2024-11-09 10:40:47,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:40:47,751 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:40:47,759 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 (15)] Forceful destruction successful, exit code 0 [2024-11-09 10:40:47,952 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 [2024-11-09 10:40:47,952 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:40:47,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:40:47,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1633394784, now seen corresponding path program 1 times [2024-11-09 10:40:47,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:40:47,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332367968] [2024-11-09 10:40:47,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:40:47,953 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 [2024-11-09 10:40:47,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:40:47,955 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) [2024-11-09 10:40:47,955 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 [2024-11-09 10:40:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:40:48,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 10:40:48,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:40:48,691 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 [2024-11-09 10:40:48,799 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 [2024-11-09 10:40:48,860 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2024-11-09 10:40:48,861 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 36 treesize of output 52 [2024-11-09 10:40:48,910 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 [2024-11-09 10:40:48,960 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 [2024-11-09 10:40:48,992 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 [2024-11-09 10:40:49,029 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 19 treesize of output 11 [2024-11-09 10:40:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:40:49,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:40:49,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 10:40:49,295 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 [2024-11-09 10:40:49,314 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 10:40:49,314 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 [2024-11-09 10:40:49,326 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 [2024-11-09 10:40:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:40:50,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:40:50,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332367968] [2024-11-09 10:40:50,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332367968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:40:50,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:40:50,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-11-09 10:40:50,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034093764] [2024-11-09 10:40:50,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:40:50,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 10:40:50,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:40:50,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 10:40:50,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=213, Unknown=12, NotChecked=0, Total=272 [2024-11-09 10:40:55,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 10:41:00,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 10:41:01,992 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 94 [2024-11-09 10:41:01,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 97 transitions, 446 flow. Second operand has 17 states, 17 states have (on average 14.235294117647058) internal successors, (242), 17 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:41:01,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:41:01,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 94 [2024-11-09 10:41:01,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:41:03,938 INFO L124 PetriNetUnfolderBase]: 1519/2691 cut-off events. [2024-11-09 10:41:03,938 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-09 10:41:03,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5355 conditions, 2691 events. 1519/2691 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15309 event pairs, 1287 based on Foata normal form. 0/1905 useless extension candidates. Maximal degree in co-relation 5134. Up to 2346 conditions per place. [2024-11-09 10:41:03,964 INFO L140 encePairwiseOnDemand]: 85/94 looper letters, 69 selfloop transitions, 23 changer transitions 0/102 dead transitions. [2024-11-09 10:41:03,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 102 transitions, 644 flow [2024-11-09 10:41:03,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 10:41:03,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 10:41:03,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-11-09 10:41:03,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2011605415860735 [2024-11-09 10:41:03,968 INFO L175 Difference]: Start difference. First operand has 113 places, 97 transitions, 446 flow. Second operand 11 states and 208 transitions. [2024-11-09 10:41:03,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 102 transitions, 644 flow [2024-11-09 10:41:03,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 102 transitions, 626 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-09 10:41:03,973 INFO L231 Difference]: Finished difference. Result has 121 places, 96 transitions, 470 flow [2024-11-09 10:41:03,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=470, PETRI_PLACES=121, PETRI_TRANSITIONS=96} [2024-11-09 10:41:03,975 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 29 predicate places. [2024-11-09 10:41:03,975 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 96 transitions, 470 flow [2024-11-09 10:41:03,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.235294117647058) internal successors, (242), 17 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:41:03,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:41:03,975 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:41:03,987 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 (16)] Ended with exit code 0 [2024-11-09 10:41:04,176 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 [2024-11-09 10:41:04,176 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:41:04,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:41:04,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1633394785, now seen corresponding path program 1 times [2024-11-09 10:41:04,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:41:04,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930993363] [2024-11-09 10:41:04,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:41:04,177 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 [2024-11-09 10:41:04,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:41:04,179 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) [2024-11-09 10:41:04,180 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 [2024-11-09 10:41:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:41:04,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-09 10:41:04,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:41:05,007 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 [2024-11-09 10:41:05,015 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 [2024-11-09 10:41:05,279 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 [2024-11-09 10:41:05,295 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 [2024-11-09 10:41:05,349 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2024-11-09 10:41:05,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 29 [2024-11-09 10:41:05,390 INFO L349 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2024-11-09 10:41:05,391 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 [2024-11-09 10:41:05,440 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 [2024-11-09 10:41:05,459 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 [2024-11-09 10:41:05,512 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 [2024-11-09 10:41:05,522 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 [2024-11-09 10:41:05,557 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 [2024-11-09 10:41:05,563 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 [2024-11-09 10:41:05,602 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 [2024-11-09 10:41:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:41:05,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:41:05,743 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_680 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_681 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_681) |c_~#c~0.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_680) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_681 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_681) |c_~#c~0.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-09 10:41:05,782 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_680 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_681 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_681) |c_~#c~0.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_680) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_681 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_681) |c_~#c~0.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-09 10:41:06,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 10:41:06,009 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 [2024-11-09 10:41:06,029 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 10:41:06,029 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 [2024-11-09 10:41:06,039 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 [2024-11-09 10:41:06,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 10:41:06,103 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 [2024-11-09 10:41:06,113 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 10:41:06,113 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 [2024-11-09 10:41:06,117 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 10:41:06,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 10:41:06,133 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 [2024-11-09 10:41:06,137 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 10:41:06,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 10:41:06,157 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 [2024-11-09 10:41:07,355 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 10:41:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-09 10:41:07,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:41:07,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930993363] [2024-11-09 10:41:07,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930993363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:41:07,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:41:07,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-11-09 10:41:07,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791088354] [2024-11-09 10:41:07,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:41:07,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 10:41:07,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:41:07,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 10:41:07,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=172, Unknown=5, NotChecked=54, Total=272 [2024-11-09 10:41:09,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 94 [2024-11-09 10:41:09,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 96 transitions, 470 flow. Second operand has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 17 states have internal predecessors, (140), 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) [2024-11-09 10:41:09,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:41:09,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 94 [2024-11-09 10:41:09,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:41:12,267 INFO L124 PetriNetUnfolderBase]: 2200/3502 cut-off events. [2024-11-09 10:41:12,267 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-09 10:41:12,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7253 conditions, 3502 events. 2200/3502 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 18258 event pairs, 1920 based on Foata normal form. 6/2095 useless extension candidates. Maximal degree in co-relation 7023. Up to 3405 conditions per place. [2024-11-09 10:41:12,301 INFO L140 encePairwiseOnDemand]: 83/94 looper letters, 72 selfloop transitions, 25 changer transitions 0/101 dead transitions. [2024-11-09 10:41:12,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 101 transitions, 678 flow [2024-11-09 10:41:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:41:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 10:41:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 159 transitions. [2024-11-09 10:41:12,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.13011456628477905 [2024-11-09 10:41:12,304 INFO L175 Difference]: Start difference. First operand has 121 places, 96 transitions, 470 flow. Second operand 13 states and 159 transitions. [2024-11-09 10:41:12,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 101 transitions, 678 flow [2024-11-09 10:41:12,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 101 transitions, 595 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-11-09 10:41:12,309 INFO L231 Difference]: Finished difference. Result has 123 places, 98 transitions, 451 flow [2024-11-09 10:41:12,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=451, PETRI_PLACES=123, PETRI_TRANSITIONS=98} [2024-11-09 10:41:12,311 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 31 predicate places. [2024-11-09 10:41:12,311 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 98 transitions, 451 flow [2024-11-09 10:41:12,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 17 states have internal predecessors, (140), 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) [2024-11-09 10:41:12,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:41:12,311 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1] [2024-11-09 10:41:12,324 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 [2024-11-09 10:41:12,512 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 [2024-11-09 10:41:12,512 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:41:12,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:41:12,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1790014161, now seen corresponding path program 2 times [2024-11-09 10:41:12,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:41:12,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084065083] [2024-11-09 10:41:12,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:41:12,514 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 [2024-11-09 10:41:12,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:41:12,517 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) [2024-11-09 10:41:12,518 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 [2024-11-09 10:41:13,220 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:41:13,221 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:41:13,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:41:13,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:41:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:41:13,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:41:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:41:13,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:41:13,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084065083] [2024-11-09 10:41:13,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084065083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:41:13,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:41:13,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-09 10:41:13,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502470774] [2024-11-09 10:41:13,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:41:13,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:41:13,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:41:13,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:41:13,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:41:13,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 94 [2024-11-09 10:41:13,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 98 transitions, 451 flow. Second operand has 12 states, 12 states have (on average 57.916666666666664) internal successors, (695), 12 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:41:13,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:41:13,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 94 [2024-11-09 10:41:13,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:41:14,472 INFO L124 PetriNetUnfolderBase]: 484/1143 cut-off events. [2024-11-09 10:41:14,473 INFO L125 PetriNetUnfolderBase]: For 500/500 co-relation queries the response was YES. [2024-11-09 10:41:14,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2492 conditions, 1143 events. 484/1143 cut-off events. For 500/500 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5216 event pairs, 368 based on Foata normal form. 12/1068 useless extension candidates. Maximal degree in co-relation 2072. Up to 755 conditions per place. [2024-11-09 10:41:14,480 INFO L140 encePairwiseOnDemand]: 90/94 looper letters, 89 selfloop transitions, 23 changer transitions 0/150 dead transitions. [2024-11-09 10:41:14,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 150 transitions, 1119 flow [2024-11-09 10:41:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:41:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:41:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 740 transitions. [2024-11-09 10:41:14,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6560283687943262 [2024-11-09 10:41:14,484 INFO L175 Difference]: Start difference. First operand has 123 places, 98 transitions, 451 flow. Second operand 12 states and 740 transitions. [2024-11-09 10:41:14,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 150 transitions, 1119 flow [2024-11-09 10:41:14,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 150 transitions, 969 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-09 10:41:14,490 INFO L231 Difference]: Finished difference. Result has 131 places, 111 transitions, 633 flow [2024-11-09 10:41:14,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=633, PETRI_PLACES=131, PETRI_TRANSITIONS=111} [2024-11-09 10:41:14,491 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 39 predicate places. [2024-11-09 10:41:14,491 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 111 transitions, 633 flow [2024-11-09 10:41:14,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 57.916666666666664) internal successors, (695), 12 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:41:14,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:41:14,491 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1] [2024-11-09 10:41:14,508 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 [2024-11-09 10:41:14,692 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 [2024-11-09 10:41:14,692 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:41:14,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:41:14,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1062355761, now seen corresponding path program 3 times [2024-11-09 10:41:14,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:41:14,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100470623] [2024-11-09 10:41:14,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:41:14,694 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 [2024-11-09 10:41:14,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:41:14,695 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) [2024-11-09 10:41:14,697 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 [2024-11-09 10:41:34,004 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-09 10:41:34,005 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:41:34,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 10:41:34,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:41:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 2 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:41:34,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:41:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 2 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:41:34,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-09 10:41:34,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100470623] [2024-11-09 10:41:34,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100470623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:41:34,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:41:34,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-09 10:41:34,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002667898] [2024-11-09 10:41:34,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 10:41:34,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 10:41:34,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-09 10:41:34,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 10:41:34,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2024-11-09 10:41:34,792 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 94 [2024-11-09 10:41:34,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 111 transitions, 633 flow. Second operand has 24 states, 24 states have (on average 58.458333333333336) internal successors, (1403), 24 states have internal predecessors, (1403), 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) [2024-11-09 10:41:34,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:41:34,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 94 [2024-11-09 10:41:34,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:41:38,120 INFO L124 PetriNetUnfolderBase]: 484/1383 cut-off events. [2024-11-09 10:41:38,120 INFO L125 PetriNetUnfolderBase]: For 1758/1758 co-relation queries the response was YES. [2024-11-09 10:41:38,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3299 conditions, 1383 events. 484/1383 cut-off events. For 1758/1758 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5256 event pairs, 368 based on Foata normal form. 24/1320 useless extension candidates. Maximal degree in co-relation 2461. Up to 755 conditions per place. [2024-11-09 10:41:38,130 INFO L140 encePairwiseOnDemand]: 90/94 looper letters, 149 selfloop transitions, 47 changer transitions 0/234 dead transitions. [2024-11-09 10:41:38,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 234 transitions, 1969 flow [2024-11-09 10:41:38,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 10:41:38,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 10:41:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1454 transitions. [2024-11-09 10:41:38,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6445035460992907 [2024-11-09 10:41:38,135 INFO L175 Difference]: Start difference. First operand has 131 places, 111 transitions, 633 flow. Second operand 24 states and 1454 transitions. [2024-11-09 10:41:38,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 234 transitions, 1969 flow [2024-11-09 10:41:38,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 234 transitions, 1957 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:41:38,145 INFO L231 Difference]: Finished difference. Result has 164 places, 136 transitions, 1165 flow [2024-11-09 10:41:38,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1165, PETRI_PLACES=164, PETRI_TRANSITIONS=136} [2024-11-09 10:41:38,146 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 72 predicate places. [2024-11-09 10:41:38,146 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 136 transitions, 1165 flow [2024-11-09 10:41:38,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 58.458333333333336) internal successors, (1403), 24 states have internal predecessors, (1403), 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) [2024-11-09 10:41:38,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:41:38,147 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 2, 1, 1, 1, 1, 1] [2024-11-09 10:41:38,194 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 (19)] Forceful destruction successful, exit code 0 [2024-11-09 10:41:38,348 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 [2024-11-09 10:41:38,348 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-09 10:41:38,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:41:38,349 INFO L85 PathProgramCache]: Analyzing trace with hash -429247473, now seen corresponding path program 4 times [2024-11-09 10:41:38,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-09 10:41:38,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563777518] [2024-11-09 10:41:38,350 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:41:38,350 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 [2024-11-09 10:41:38,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-09 10:41:38,351 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) [2024-11-09 10:41:38,353 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