./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 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/09-regions_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-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:26:15,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:26:15,867 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:26:15,873 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:26:15,874 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:26:15,899 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:26:15,900 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:26:15,901 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:26:15,901 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:26:15,903 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:26:15,903 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:26:15,903 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:26:15,904 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:26:15,905 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:26:15,906 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:26:15,906 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:26:15,906 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:26:15,906 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:26:15,907 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:26:15,907 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:26:15,907 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:26:15,910 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:26:15,911 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:26:15,911 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:26:15,911 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:26:15,911 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:26:15,911 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:26:15,912 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:26:15,912 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:26:15,912 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:26:15,912 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:26:15,913 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:26:15,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:26:15,913 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:26:15,913 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:26:15,913 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:26:15,914 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:26:15,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:26:15,914 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:26:15,915 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:26:15,915 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:26:15,915 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:26:15,916 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2024-11-17 03:26:16,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:26:16,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:26:16,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:26:16,146 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:26:16,147 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:26:16,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2024-11-17 03:26:17,471 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:26:17,723 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:26:17,725 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2024-11-17 03:26:17,744 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ead2353b1/26ed37adcc0f48b895c6cf74966f3ee6/FLAG6aba14591 [2024-11-17 03:26:18,052 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ead2353b1/26ed37adcc0f48b895c6cf74966f3ee6 [2024-11-17 03:26:18,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:26:18,055 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:26:18,056 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:26:18,056 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:26:18,061 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:26:18,061 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:26:18" (1/1) ... [2024-11-17 03:26:18,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ccbea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:18, skipping insertion in model container [2024-11-17 03:26:18,062 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:26:18" (1/1) ... [2024-11-17 03:26:18,111 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:26:18,487 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:18,487 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:18,488 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:18,489 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:18,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:26:18,563 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-11-17 03:26:18,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31848ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:18, skipping insertion in model container [2024-11-17 03:26:18,564 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:26:18,564 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-17 03:26:18,567 INFO L158 Benchmark]: Toolchain (without parser) took 509.43ms. Allocated memory is still 155.2MB. Free memory was 79.6MB in the beginning and 60.4MB in the end (delta: 19.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-17 03:26:18,567 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 105.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 03:26:18,568 INFO L158 Benchmark]: CACSL2BoogieTranslator took 507.75ms. Allocated memory is still 155.2MB. Free memory was 79.6MB in the beginning and 60.4MB in the end (delta: 19.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-17 03:26:18,569 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 105.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 507.75ms. Allocated memory is still 155.2MB. Free memory was 79.6MB in the beginning and 60.4MB in the end (delta: 19.2MB). 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-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:26:20,609 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:26:20,728 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-17 03:26:20,731 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:26:20,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:26:20,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:26:20,767 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:26:20,771 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:26:20,772 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:26:20,772 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:26:20,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:26:20,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:26:20,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:26:20,781 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:26:20,782 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:26:20,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:26:20,782 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:26:20,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:26:20,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:26:20,783 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:26:20,783 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:26:20,787 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:26:20,787 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:26:20,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:26:20,791 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:26:20,791 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-17 03:26:20,791 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:26:20,795 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-17 03:26:20,795 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:26:20,796 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:26:20,796 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:26:20,796 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:26:20,796 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:26:20,796 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:26:20,798 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:26:20,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:26:20,799 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:26:20,799 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:26:20,800 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-17 03:26:20,800 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-17 03:26:20,800 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:26:20,800 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:26:20,800 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:26:20,800 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:26:20,801 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 085e9170c725dbfce47ad23ff96af1e2e4188372955794675158fde45968fe8a [2024-11-17 03:26:21,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:26:21,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:26:21,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:26:21,192 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:26:21,192 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:26:21,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2024-11-17 03:26:22,830 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:26:23,066 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:26:23,067 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_24-evilcollapse_nr.i [2024-11-17 03:26:23,087 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2df2d81b0/0ef732243c8c4faba5b5fa2375f44ecb/FLAG48de28dd1 [2024-11-17 03:26:23,099 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2df2d81b0/0ef732243c8c4faba5b5fa2375f44ecb [2024-11-17 03:26:23,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:26:23,102 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:26:23,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:26:23,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:26:23,107 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:26:23,109 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:26:23" (1/1) ... [2024-11-17 03:26:23,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4b545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:23, skipping insertion in model container [2024-11-17 03:26:23,110 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:26:23" (1/1) ... [2024-11-17 03:26:23,187 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:26:23,532 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:23,533 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:23,534 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:23,534 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:23,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:26:23,602 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-17 03:26:23,607 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:26:23,629 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:23,629 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:23,630 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:23,630 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:23,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:26:23,650 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:26:23,689 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:23,689 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:23,690 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:23,690 WARN L1684 CHandler]: Possible shadowing of function new [2024-11-17 03:26:23,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:26:23,778 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:26:23,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:23 WrapperNode [2024-11-17 03:26:23,779 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:26:23,780 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:26:23,780 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:26:23,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:26:23,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:23" (1/1) ... [2024-11-17 03:26:23,810 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:23" (1/1) ... [2024-11-17 03:26:23,838 INFO L138 Inliner]: procedures = 276, calls = 101, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 214 [2024-11-17 03:26:23,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:26:23,839 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:26:23,840 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:26:23,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:26:23,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:23" (1/1) ... [2024-11-17 03:26:23,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:23" (1/1) ... [2024-11-17 03:26:23,853 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:23" (1/1) ... [2024-11-17 03:26:23,884 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]. [2024-11-17 03:26:23,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:23" (1/1) ... [2024-11-17 03:26:23,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:23" (1/1) ... [2024-11-17 03:26:23,905 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:23" (1/1) ... [2024-11-17 03:26:23,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:23" (1/1) ... [2024-11-17 03:26:23,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:23" (1/1) ... [2024-11-17 03:26:23,918 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:23" (1/1) ... [2024-11-17 03:26:23,921 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:26:23,922 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:26:23,922 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:26:23,923 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:26:23,923 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:23" (1/1) ... [2024-11-17 03:26:23,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:26:23,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:26:23,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 03:26:23,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 03:26:23,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-17 03:26:23,992 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-17 03:26:23,993 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-17 03:26:23,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 03:26:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-17 03:26:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-17 03:26:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-17 03:26:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:26:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:26:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 03:26:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:26:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 03:26:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:26:23,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:26:23,996 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:26:24,143 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:26:24,148 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:26:24,624 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:26:24,624 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:26:25,953 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:26:25,953 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:26:25,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:26:25 BoogieIcfgContainer [2024-11-17 03:26:25,954 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:26:25,956 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:26:25,956 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:26:25,959 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:26:25,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:26:23" (1/3) ... [2024-11-17 03:26:25,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8e266b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:26:25, skipping insertion in model container [2024-11-17 03:26:25,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:26:23" (2/3) ... [2024-11-17 03:26:25,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8e266b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:26:25, skipping insertion in model container [2024-11-17 03:26:25,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:26:25" (3/3) ... [2024-11-17 03:26:25,963 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2024-11-17 03:26:25,977 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:26:25,977 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2024-11-17 03:26:25,977 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:26:26,055 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:26:26,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 110 transitions, 228 flow [2024-11-17 03:26:26,135 INFO L124 PetriNetUnfolderBase]: 13/108 cut-off events. [2024-11-17 03:26:26,139 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:26:26,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 108 events. 13/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 351 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2024-11-17 03:26:26,143 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 110 transitions, 228 flow [2024-11-17 03:26:26,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 108 transitions, 222 flow [2024-11-17 03:26:26,171 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:26:26,182 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;@701b814c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:26:26,186 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2024-11-17 03:26:26,196 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:26:26,204 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:26:26,204 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:26:26,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:26,206 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:26:26,207 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:26:26,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:26,211 INFO L85 PathProgramCache]: Analyzing trace with hash 18368558, now seen corresponding path program 1 times [2024-11-17 03:26:26,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:26,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058488549] [2024-11-17 03:26:26,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:26,225 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:26,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:26,228 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:26,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-17 03:26:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:26,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 03:26:26,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:26,504 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:26,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:26,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058488549] [2024-11-17 03:26:26,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058488549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:26,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:26,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:26:26,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162060336] [2024-11-17 03:26:26,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:26,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:26:26,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:26,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:26:26,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:26:26,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 110 [2024-11-17 03:26:26,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 108 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:26,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:26,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 110 [2024-11-17 03:26:26,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:27,095 INFO L124 PetriNetUnfolderBase]: 390/890 cut-off events. [2024-11-17 03:26:27,095 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-17 03:26:27,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1523 conditions, 890 events. 390/890 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5349 event pairs, 287 based on Foata normal form. 103/813 useless extension candidates. Maximal degree in co-relation 1455. Up to 610 conditions per place. [2024-11-17 03:26:27,103 INFO L140 encePairwiseOnDemand]: 95/110 looper letters, 36 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-11-17 03:26:27,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 96 transitions, 276 flow [2024-11-17 03:26:27,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:26:27,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:26:27,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 287 transitions. [2024-11-17 03:26:27,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6522727272727272 [2024-11-17 03:26:27,114 INFO L175 Difference]: Start difference. First operand has 102 places, 108 transitions, 222 flow. Second operand 4 states and 287 transitions. [2024-11-17 03:26:27,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 96 transitions, 276 flow [2024-11-17 03:26:27,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 96 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:26:27,119 INFO L231 Difference]: Finished difference. Result has 97 places, 96 transitions, 202 flow [2024-11-17 03:26:27,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=97, PETRI_TRANSITIONS=96} [2024-11-17 03:26:27,123 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -5 predicate places. [2024-11-17 03:26:27,124 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 96 transitions, 202 flow [2024-11-17 03:26:27,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:27,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:27,124 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:26:27,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-17 03:26:27,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:27,326 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:26:27,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:27,326 INFO L85 PathProgramCache]: Analyzing trace with hash 18368559, now seen corresponding path program 1 times [2024-11-17 03:26:27,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:27,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943317507] [2024-11-17 03:26:27,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:27,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:27,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:27,332 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:27,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-17 03:26:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:27,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 03:26:27,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:27,516 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:27,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:27,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943317507] [2024-11-17 03:26:27,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943317507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:27,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:27,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:26:27,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689135538] [2024-11-17 03:26:27,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:27,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:26:27,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:27,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:26:27,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:26:27,730 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 110 [2024-11-17 03:26:27,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 96 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 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) [2024-11-17 03:26:27,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:27,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 110 [2024-11-17 03:26:27,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:28,035 INFO L124 PetriNetUnfolderBase]: 391/898 cut-off events. [2024-11-17 03:26:28,035 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-17 03:26:28,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 898 events. 391/898 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5302 event pairs, 287 based on Foata normal form. 3/722 useless extension candidates. Maximal degree in co-relation 1512. Up to 617 conditions per place. [2024-11-17 03:26:28,042 INFO L140 encePairwiseOnDemand]: 102/110 looper letters, 42 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2024-11-17 03:26:28,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 100 transitions, 308 flow [2024-11-17 03:26:28,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:26:28,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:26:28,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2024-11-17 03:26:28,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6681818181818182 [2024-11-17 03:26:28,046 INFO L175 Difference]: Start difference. First operand has 97 places, 96 transitions, 202 flow. Second operand 4 states and 294 transitions. [2024-11-17 03:26:28,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 100 transitions, 308 flow [2024-11-17 03:26:28,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 100 transitions, 298 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:26:28,051 INFO L231 Difference]: Finished difference. Result has 99 places, 100 transitions, 235 flow [2024-11-17 03:26:28,051 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=99, PETRI_TRANSITIONS=100} [2024-11-17 03:26:28,052 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -3 predicate places. [2024-11-17 03:26:28,053 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 100 transitions, 235 flow [2024-11-17 03:26:28,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 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) [2024-11-17 03:26:28,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:28,053 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:28,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-17 03:26:28,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:28,255 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:26:28,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:28,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1356149011, now seen corresponding path program 1 times [2024-11-17 03:26:28,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:28,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992955503] [2024-11-17 03:26:28,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:28,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:28,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:28,259 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:28,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-17 03:26:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:28,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 03:26:28,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:28,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-17 03:26:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:28,382 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:28,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:28,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992955503] [2024-11-17 03:26:28,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992955503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:28,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:28,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:26:28,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641498151] [2024-11-17 03:26:28,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:28,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:26:28,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:28,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:26:28,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:26:28,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 110 [2024-11-17 03:26:28,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 100 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 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) [2024-11-17 03:26:28,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:28,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 110 [2024-11-17 03:26:28,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:28,645 INFO L124 PetriNetUnfolderBase]: 391/897 cut-off events. [2024-11-17 03:26:28,645 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-17 03:26:28,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 897 events. 391/897 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5311 event pairs, 287 based on Foata normal form. 0/718 useless extension candidates. Maximal degree in co-relation 1516. Up to 611 conditions per place. [2024-11-17 03:26:28,649 INFO L140 encePairwiseOnDemand]: 107/110 looper letters, 38 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-11-17 03:26:28,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 99 transitions, 315 flow [2024-11-17 03:26:28,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:26:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:26:28,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2024-11-17 03:26:28,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7151515151515152 [2024-11-17 03:26:28,652 INFO L175 Difference]: Start difference. First operand has 99 places, 100 transitions, 235 flow. Second operand 3 states and 236 transitions. [2024-11-17 03:26:28,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 99 transitions, 315 flow [2024-11-17 03:26:28,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 99 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:26:28,654 INFO L231 Difference]: Finished difference. Result has 99 places, 99 transitions, 236 flow [2024-11-17 03:26:28,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=99, PETRI_TRANSITIONS=99} [2024-11-17 03:26:28,655 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -3 predicate places. [2024-11-17 03:26:28,655 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 99 transitions, 236 flow [2024-11-17 03:26:28,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 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) [2024-11-17 03:26:28,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:28,655 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:28,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-17 03:26:28,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:28,860 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:26:28,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:28,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1356149010, now seen corresponding path program 1 times [2024-11-17 03:26:28,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:28,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918979492] [2024-11-17 03:26:28,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:28,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:28,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:28,866 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:28,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-17 03:26:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:28,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 03:26:28,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:28,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 03:26:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:28,993 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:28,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:28,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918979492] [2024-11-17 03:26:28,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918979492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:28,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:28,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:26:28,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58444759] [2024-11-17 03:26:28,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:28,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:26:28,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:28,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:26:28,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:26:29,101 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 110 [2024-11-17 03:26:29,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 99 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 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) [2024-11-17 03:26:29,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:29,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 110 [2024-11-17 03:26:29,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:29,358 INFO L124 PetriNetUnfolderBase]: 391/896 cut-off events. [2024-11-17 03:26:29,359 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-17 03:26:29,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 896 events. 391/896 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5317 event pairs, 287 based on Foata normal form. 0/717 useless extension candidates. Maximal degree in co-relation 1515. Up to 611 conditions per place. [2024-11-17 03:26:29,363 INFO L140 encePairwiseOnDemand]: 107/110 looper letters, 38 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-11-17 03:26:29,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 98 transitions, 316 flow [2024-11-17 03:26:29,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:26:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:26:29,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2024-11-17 03:26:29,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7151515151515152 [2024-11-17 03:26:29,366 INFO L175 Difference]: Start difference. First operand has 99 places, 99 transitions, 236 flow. Second operand 3 states and 236 transitions. [2024-11-17 03:26:29,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 98 transitions, 316 flow [2024-11-17 03:26:29,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 98 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:26:29,369 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 234 flow [2024-11-17 03:26:29,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2024-11-17 03:26:29,370 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -4 predicate places. [2024-11-17 03:26:29,370 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 234 flow [2024-11-17 03:26:29,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 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) [2024-11-17 03:26:29,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:29,371 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:29,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-17 03:26:29,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:29,571 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:26:29,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:29,572 INFO L85 PathProgramCache]: Analyzing trace with hash 909054263, now seen corresponding path program 1 times [2024-11-17 03:26:29,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:29,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769482646] [2024-11-17 03:26:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:29,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:29,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:29,575 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:29,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-17 03:26:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:29,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 03:26:29,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:29,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-17 03:26:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:29,708 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:29,708 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:29,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769482646] [2024-11-17 03:26:29,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769482646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:29,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:29,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:26:29,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391261925] [2024-11-17 03:26:29,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:29,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:26:29,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:29,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:26:29,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:26:29,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 110 [2024-11-17 03:26:29,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 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) [2024-11-17 03:26:29,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:29,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 110 [2024-11-17 03:26:29,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:30,087 INFO L124 PetriNetUnfolderBase]: 391/894 cut-off events. [2024-11-17 03:26:30,087 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-17 03:26:30,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 894 events. 391/894 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5280 event pairs, 287 based on Foata normal form. 1/719 useless extension candidates. Maximal degree in co-relation 1515. Up to 611 conditions per place. [2024-11-17 03:26:30,091 INFO L140 encePairwiseOnDemand]: 103/110 looper letters, 36 selfloop transitions, 7 changer transitions 0/96 dead transitions. [2024-11-17 03:26:30,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 96 transitions, 316 flow [2024-11-17 03:26:30,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:26:30,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:26:30,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 341 transitions. [2024-11-17 03:26:30,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-11-17 03:26:30,093 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 234 flow. Second operand 5 states and 341 transitions. [2024-11-17 03:26:30,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 96 transitions, 316 flow [2024-11-17 03:26:30,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:26:30,096 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 238 flow [2024-11-17 03:26:30,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2024-11-17 03:26:30,098 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -4 predicate places. [2024-11-17 03:26:30,098 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 238 flow [2024-11-17 03:26:30,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 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) [2024-11-17 03:26:30,098 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:30,098 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:30,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-11-17 03:26:30,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:30,299 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:26:30,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:30,300 INFO L85 PathProgramCache]: Analyzing trace with hash 909054264, now seen corresponding path program 1 times [2024-11-17 03:26:30,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:30,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221528785] [2024-11-17 03:26:30,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:30,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:30,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:30,302 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:30,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-17 03:26:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:30,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 03:26:30,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:30,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 03:26:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:30,450 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:30,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:30,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221528785] [2024-11-17 03:26:30,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221528785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:30,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:30,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:26:30,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133018524] [2024-11-17 03:26:30,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:30,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:26:30,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:30,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:26:30,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:26:30,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 110 [2024-11-17 03:26:30,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:30,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:30,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 110 [2024-11-17 03:26:30,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:30,883 INFO L124 PetriNetUnfolderBase]: 391/892 cut-off events. [2024-11-17 03:26:30,883 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-17 03:26:30,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 892 events. 391/892 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5256 event pairs, 287 based on Foata normal form. 2/718 useless extension candidates. Maximal degree in co-relation 1513. Up to 613 conditions per place. [2024-11-17 03:26:30,887 INFO L140 encePairwiseOnDemand]: 105/110 looper letters, 39 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2024-11-17 03:26:30,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 94 transitions, 320 flow [2024-11-17 03:26:30,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:26:30,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:26:30,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2024-11-17 03:26:30,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6568181818181819 [2024-11-17 03:26:30,889 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 238 flow. Second operand 4 states and 289 transitions. [2024-11-17 03:26:30,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 94 transitions, 320 flow [2024-11-17 03:26:30,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 94 transitions, 306 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:26:30,893 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 228 flow [2024-11-17 03:26:30,893 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=95, PETRI_TRANSITIONS=94} [2024-11-17 03:26:30,895 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -7 predicate places. [2024-11-17 03:26:30,895 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 228 flow [2024-11-17 03:26:30,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:30,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:30,896 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:30,905 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 [2024-11-17 03:26:31,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:31,097 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:26:31,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:31,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1721379717, now seen corresponding path program 1 times [2024-11-17 03:26:31,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:31,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948357653] [2024-11-17 03:26:31,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:31,098 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:31,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:31,101 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:31,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-17 03:26:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:31,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-17 03:26:31,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:31,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:31,192 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:31,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:31,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948357653] [2024-11-17 03:26:31,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948357653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:31,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:31,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:26:31,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273955692] [2024-11-17 03:26:31,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:31,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:26:31,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:31,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:26:31,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:26:31,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 110 [2024-11-17 03:26:31,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 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) [2024-11-17 03:26:31,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:31,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 110 [2024-11-17 03:26:31,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:31,412 INFO L124 PetriNetUnfolderBase]: 390/910 cut-off events. [2024-11-17 03:26:31,413 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-17 03:26:31,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1572 conditions, 910 events. 390/910 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5257 event pairs, 287 based on Foata normal form. 2/728 useless extension candidates. Maximal degree in co-relation 1542. Up to 612 conditions per place. [2024-11-17 03:26:31,416 INFO L140 encePairwiseOnDemand]: 107/110 looper letters, 43 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-11-17 03:26:31,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 98 transitions, 334 flow [2024-11-17 03:26:31,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:26:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:26:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-11-17 03:26:31,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-11-17 03:26:31,418 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 228 flow. Second operand 3 states and 242 transitions. [2024-11-17 03:26:31,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 98 transitions, 334 flow [2024-11-17 03:26:31,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 98 transitions, 318 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-17 03:26:31,420 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 229 flow [2024-11-17 03:26:31,420 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=95, PETRI_TRANSITIONS=94} [2024-11-17 03:26:31,420 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -7 predicate places. [2024-11-17 03:26:31,420 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 229 flow [2024-11-17 03:26:31,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 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) [2024-11-17 03:26:31,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:31,421 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:31,426 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 [2024-11-17 03:26:31,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:31,622 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:26:31,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:31,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1722801366, now seen corresponding path program 1 times [2024-11-17 03:26:31,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:31,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953838185] [2024-11-17 03:26:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:31,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:31,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:31,626 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:31,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-17 03:26:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:32,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 03:26:32,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:32,074 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-17 03:26:32,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-17 03:26:32,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:32,152 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:32,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:32,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953838185] [2024-11-17 03:26:32,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953838185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:32,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:32,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:26:32,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992614369] [2024-11-17 03:26:32,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:32,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:26:32,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:32,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:26:32,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:26:32,445 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 110 [2024-11-17 03:26:32,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:32,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:32,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 110 [2024-11-17 03:26:32,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:32,771 INFO L124 PetriNetUnfolderBase]: 390/906 cut-off events. [2024-11-17 03:26:32,771 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-17 03:26:32,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 906 events. 390/906 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5257 event pairs, 287 based on Foata normal form. 2/728 useless extension candidates. Maximal degree in co-relation 1534. Up to 608 conditions per place. [2024-11-17 03:26:32,775 INFO L140 encePairwiseOnDemand]: 104/110 looper letters, 35 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2024-11-17 03:26:32,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 307 flow [2024-11-17 03:26:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:26:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:26:32,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 339 transitions. [2024-11-17 03:26:32,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6163636363636363 [2024-11-17 03:26:32,777 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 229 flow. Second operand 5 states and 339 transitions. [2024-11-17 03:26:32,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 307 flow [2024-11-17 03:26:32,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 92 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:26:32,779 INFO L231 Difference]: Finished difference. Result has 96 places, 92 transitions, 234 flow [2024-11-17 03:26:32,779 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=234, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2024-11-17 03:26:32,780 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -6 predicate places. [2024-11-17 03:26:32,780 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 234 flow [2024-11-17 03:26:32,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:32,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:32,781 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:32,792 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 [2024-11-17 03:26:32,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:32,985 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:26:32,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:32,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1722801367, now seen corresponding path program 1 times [2024-11-17 03:26:32,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:32,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032734491] [2024-11-17 03:26:32,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:32,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:32,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:32,988 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:32,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-17 03:26:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:33,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-17 03:26:33,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:33,516 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-17 03:26:33,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-17 03:26:33,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-17 03:26:33,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:33,626 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:33,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:33,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032734491] [2024-11-17 03:26:33,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032734491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:33,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:33,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:26:33,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305512846] [2024-11-17 03:26:33,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:33,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:26:33,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:33,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:26:33,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:26:33,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 110 [2024-11-17 03:26:33,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 59.166666666666664) internal successors, (355), 6 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:33,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:33,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 110 [2024-11-17 03:26:33,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:34,335 INFO L124 PetriNetUnfolderBase]: 391/938 cut-off events. [2024-11-17 03:26:34,335 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-11-17 03:26:34,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 938 events. 391/938 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5584 event pairs, 287 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 1537. Up to 621 conditions per place. [2024-11-17 03:26:34,340 INFO L140 encePairwiseOnDemand]: 103/110 looper letters, 45 selfloop transitions, 7 changer transitions 0/99 dead transitions. [2024-11-17 03:26:34,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 99 transitions, 366 flow [2024-11-17 03:26:34,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:26:34,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:26:34,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 341 transitions. [2024-11-17 03:26:34,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-11-17 03:26:34,342 INFO L175 Difference]: Start difference. First operand has 96 places, 92 transitions, 234 flow. Second operand 5 states and 341 transitions. [2024-11-17 03:26:34,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 99 transitions, 366 flow [2024-11-17 03:26:34,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 99 transitions, 346 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:26:34,344 INFO L231 Difference]: Finished difference. Result has 99 places, 97 transitions, 278 flow [2024-11-17 03:26:34,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=99, PETRI_TRANSITIONS=97} [2024-11-17 03:26:34,346 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -3 predicate places. [2024-11-17 03:26:34,346 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 97 transitions, 278 flow [2024-11-17 03:26:34,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.166666666666664) internal successors, (355), 6 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:34,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:34,346 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:34,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-17 03:26:34,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:34,551 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:26:34,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:34,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1867235441, now seen corresponding path program 1 times [2024-11-17 03:26:34,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:34,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354977017] [2024-11-17 03:26:34,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:34,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:34,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:34,555 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:34,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-17 03:26:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:35,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-17 03:26:35,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:35,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 03:26:35,179 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 37 treesize of output 15 [2024-11-17 03:26:35,235 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-17 03:26:35,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-17 03:26:35,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-17 03:26:35,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-17 03:26:35,317 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 16 treesize of output 11 [2024-11-17 03:26:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:35,360 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:35,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:35,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354977017] [2024-11-17 03:26:35,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354977017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:35,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:35,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 03:26:35,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488184376] [2024-11-17 03:26:35,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:35,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 03:26:35,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:35,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 03:26:35,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-17 03:26:36,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 110 [2024-11-17 03:26:36,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 97 transitions, 278 flow. Second operand has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:36,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:36,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 110 [2024-11-17 03:26:36,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:37,111 INFO L124 PetriNetUnfolderBase]: 391/936 cut-off events. [2024-11-17 03:26:37,112 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-17 03:26:37,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 936 events. 391/936 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5559 event pairs, 287 based on Foata normal form. 0/758 useless extension candidates. Maximal degree in co-relation 1562. Up to 626 conditions per place. [2024-11-17 03:26:37,117 INFO L140 encePairwiseOnDemand]: 99/110 looper letters, 47 selfloop transitions, 15 changer transitions 0/106 dead transitions. [2024-11-17 03:26:37,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 106 transitions, 430 flow [2024-11-17 03:26:37,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 03:26:37,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 03:26:37,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 615 transitions. [2024-11-17 03:26:37,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5082644628099173 [2024-11-17 03:26:37,120 INFO L175 Difference]: Start difference. First operand has 99 places, 97 transitions, 278 flow. Second operand 11 states and 615 transitions. [2024-11-17 03:26:37,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 106 transitions, 430 flow [2024-11-17 03:26:37,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:26:37,125 INFO L231 Difference]: Finished difference. Result has 113 places, 103 transitions, 357 flow [2024-11-17 03:26:37,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=357, PETRI_PLACES=113, PETRI_TRANSITIONS=103} [2024-11-17 03:26:37,127 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 11 predicate places. [2024-11-17 03:26:37,127 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 103 transitions, 357 flow [2024-11-17 03:26:37,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:37,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:37,128 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:37,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-11-17 03:26:37,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:37,332 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:26:37,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:37,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1867235442, now seen corresponding path program 1 times [2024-11-17 03:26:37,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:37,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803212077] [2024-11-17 03:26:37,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:37,333 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:37,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:37,334 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:37,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-17 03:26:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:37,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-17 03:26:37,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:38,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 03:26:38,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 03:26:38,190 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 11 [2024-11-17 03:26:38,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-17 03:26:38,274 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-17 03:26:38,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-17 03:26:38,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-17 03:26:38,335 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 16 treesize of output 11 [2024-11-17 03:26:38,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-17 03:26:38,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-17 03:26:38,419 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 16 treesize of output 11 [2024-11-17 03:26:38,448 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 16 treesize of output 11 [2024-11-17 03:26:38,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-17 03:26:38,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:38,515 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:38,515 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:38,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803212077] [2024-11-17 03:26:38,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803212077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:38,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:38,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 03:26:38,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195899325] [2024-11-17 03:26:38,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:38,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 03:26:38,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:38,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 03:26:38,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-17 03:26:39,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 110 [2024-11-17 03:26:39,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 103 transitions, 357 flow. Second operand has 10 states, 10 states have (on average 45.0) internal successors, (450), 10 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:39,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:39,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 110 [2024-11-17 03:26:39,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:40,008 INFO L124 PetriNetUnfolderBase]: 391/935 cut-off events. [2024-11-17 03:26:40,008 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-11-17 03:26:40,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1710 conditions, 935 events. 391/935 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5557 event pairs, 287 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 1570. Up to 634 conditions per place. [2024-11-17 03:26:40,013 INFO L140 encePairwiseOnDemand]: 98/110 looper letters, 67 selfloop transitions, 11 changer transitions 0/117 dead transitions. [2024-11-17 03:26:40,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 117 transitions, 560 flow [2024-11-17 03:26:40,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 03:26:40,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 03:26:40,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 557 transitions. [2024-11-17 03:26:40,016 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46033057851239667 [2024-11-17 03:26:40,016 INFO L175 Difference]: Start difference. First operand has 113 places, 103 transitions, 357 flow. Second operand 11 states and 557 transitions. [2024-11-17 03:26:40,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 117 transitions, 560 flow [2024-11-17 03:26:40,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 117 transitions, 542 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 03:26:40,020 INFO L231 Difference]: Finished difference. Result has 122 places, 107 transitions, 400 flow [2024-11-17 03:26:40,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=400, PETRI_PLACES=122, PETRI_TRANSITIONS=107} [2024-11-17 03:26:40,020 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 20 predicate places. [2024-11-17 03:26:40,021 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 107 transitions, 400 flow [2024-11-17 03:26:40,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 45.0) internal successors, (450), 10 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:40,022 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:40,022 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:40,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-17 03:26:40,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:40,223 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:26:40,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:40,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2049724357, now seen corresponding path program 1 times [2024-11-17 03:26:40,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:40,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324855785] [2024-11-17 03:26:40,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:40,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:40,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:40,230 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:40,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-17 03:26:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:40,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 03:26:40,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:40,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-17 03:26:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:40,468 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:40,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:40,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324855785] [2024-11-17 03:26:40,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324855785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:40,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:40,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:26:40,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947470206] [2024-11-17 03:26:40,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:40,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:26:40,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:40,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:26:40,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:26:40,563 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 110 [2024-11-17 03:26:40,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 107 transitions, 400 flow. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:40,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:40,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 110 [2024-11-17 03:26:40,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:40,861 INFO L124 PetriNetUnfolderBase]: 391/927 cut-off events. [2024-11-17 03:26:40,861 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-11-17 03:26:40,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 927 events. 391/927 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5509 event pairs, 287 based on Foata normal form. 0/757 useless extension candidates. Maximal degree in co-relation 1573. Up to 612 conditions per place. [2024-11-17 03:26:40,866 INFO L140 encePairwiseOnDemand]: 105/110 looper letters, 43 selfloop transitions, 12 changer transitions 0/105 dead transitions. [2024-11-17 03:26:40,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 105 transitions, 506 flow [2024-11-17 03:26:40,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:26:40,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:26:40,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2024-11-17 03:26:40,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6568181818181819 [2024-11-17 03:26:40,868 INFO L175 Difference]: Start difference. First operand has 122 places, 107 transitions, 400 flow. Second operand 4 states and 289 transitions. [2024-11-17 03:26:40,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 105 transitions, 506 flow [2024-11-17 03:26:40,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 105 transitions, 502 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:26:40,871 INFO L231 Difference]: Finished difference. Result has 121 places, 105 transitions, 416 flow [2024-11-17 03:26:40,871 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=416, PETRI_PLACES=121, PETRI_TRANSITIONS=105} [2024-11-17 03:26:40,872 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 19 predicate places. [2024-11-17 03:26:40,873 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 105 transitions, 416 flow [2024-11-17 03:26:40,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:40,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:40,873 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:40,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-11-17 03:26:41,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:41,074 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:26:41,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:41,075 INFO L85 PathProgramCache]: Analyzing trace with hash 2049724358, now seen corresponding path program 1 times [2024-11-17 03:26:41,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:41,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164646252] [2024-11-17 03:26:41,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:41,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:41,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:41,076 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:41,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-17 03:26:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:41,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:26:41,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:41,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 03:26:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:41,264 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:26:41,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:41,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164646252] [2024-11-17 03:26:41,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164646252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:26:41,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:26:41,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:26:41,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797364327] [2024-11-17 03:26:41,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:26:41,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:26:41,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:41,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:26:41,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:26:41,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 110 [2024-11-17 03:26:41,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 105 transitions, 416 flow. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:41,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:41,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 110 [2024-11-17 03:26:41,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:41,676 INFO L124 PetriNetUnfolderBase]: 391/919 cut-off events. [2024-11-17 03:26:41,676 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-11-17 03:26:41,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1692 conditions, 919 events. 391/919 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5449 event pairs, 287 based on Foata normal form. 8/757 useless extension candidates. Maximal degree in co-relation 1570. Up to 612 conditions per place. [2024-11-17 03:26:41,682 INFO L140 encePairwiseOnDemand]: 105/110 looper letters, 41 selfloop transitions, 12 changer transitions 0/103 dead transitions. [2024-11-17 03:26:41,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 103 transitions, 518 flow [2024-11-17 03:26:41,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:26:41,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:26:41,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 295 transitions. [2024-11-17 03:26:41,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6704545454545454 [2024-11-17 03:26:41,684 INFO L175 Difference]: Start difference. First operand has 121 places, 105 transitions, 416 flow. Second operand 4 states and 295 transitions. [2024-11-17 03:26:41,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 103 transitions, 518 flow [2024-11-17 03:26:41,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 103 transitions, 494 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:26:41,686 INFO L231 Difference]: Finished difference. Result has 119 places, 103 transitions, 412 flow [2024-11-17 03:26:41,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=412, PETRI_PLACES=119, PETRI_TRANSITIONS=103} [2024-11-17 03:26:41,687 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 17 predicate places. [2024-11-17 03:26:41,687 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 103 transitions, 412 flow [2024-11-17 03:26:41,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:41,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:41,687 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:41,693 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 (14)] Forceful destruction successful, exit code 0 [2024-11-17 03:26:41,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:41,888 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:26:41,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:41,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1990057660, now seen corresponding path program 1 times [2024-11-17 03:26:41,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:41,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334481575] [2024-11-17 03:26:41,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:41,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:41,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:41,890 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:41,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-17 03:26:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:42,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 03:26:42,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:42,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:26:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:42,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:42,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334481575] [2024-11-17 03:26:42,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334481575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:26:42,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:26:42,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-17 03:26:42,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085854162] [2024-11-17 03:26:42,112 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:26:42,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:26:42,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:42,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:26:42,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:26:42,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 110 [2024-11-17 03:26:42,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 103 transitions, 412 flow. Second operand has 6 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:42,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:26:42,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 110 [2024-11-17 03:26:42,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:26:42,636 INFO L124 PetriNetUnfolderBase]: 391/975 cut-off events. [2024-11-17 03:26:42,636 INFO L125 PetriNetUnfolderBase]: For 321/321 co-relation queries the response was YES. [2024-11-17 03:26:42,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1848 conditions, 975 events. 391/975 cut-off events. For 321/321 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5545 event pairs, 287 based on Foata normal form. 6/807 useless extension candidates. Maximal degree in co-relation 1646. Up to 610 conditions per place. [2024-11-17 03:26:42,661 INFO L140 encePairwiseOnDemand]: 106/110 looper letters, 60 selfloop transitions, 12 changer transitions 0/121 dead transitions. [2024-11-17 03:26:42,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 121 transitions, 704 flow [2024-11-17 03:26:42,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:26:42,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:26:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 453 transitions. [2024-11-17 03:26:42,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6863636363636364 [2024-11-17 03:26:42,666 INFO L175 Difference]: Start difference. First operand has 119 places, 103 transitions, 412 flow. Second operand 6 states and 453 transitions. [2024-11-17 03:26:42,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 121 transitions, 704 flow [2024-11-17 03:26:42,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 121 transitions, 652 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:26:42,675 INFO L231 Difference]: Finished difference. Result has 125 places, 109 transitions, 486 flow [2024-11-17 03:26:42,675 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=486, PETRI_PLACES=125, PETRI_TRANSITIONS=109} [2024-11-17 03:26:42,675 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 23 predicate places. [2024-11-17 03:26:42,676 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 109 transitions, 486 flow [2024-11-17 03:26:42,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:26:42,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:26:42,676 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:26:42,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-11-17 03:26:42,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:42,877 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:26:42,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:26:42,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1518173550, now seen corresponding path program 1 times [2024-11-17 03:26:42,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:26:42,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624620583] [2024-11-17 03:26:42,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:26:42,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:26:42,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:26:42,880 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:26:42,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-11-17 03:26:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:26:43,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-17 03:26:43,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:26:43,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-17 03:26:43,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-17 03:26:43,813 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2024-11-17 03:26:43,813 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 [2024-11-17 03:26:43,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-17 03:26:43,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-17 03:26:43,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2024-11-17 03:26:43,957 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 [2024-11-17 03:26:43,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:43,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:26:44,165 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:26:44,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-17 03:26:44,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:26:44,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 55 [2024-11-17 03:26:44,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2024-11-17 03:26:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:26:45,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:26:45,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624620583] [2024-11-17 03:26:45,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624620583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:26:45,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:26:45,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2024-11-17 03:26:45,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832160748] [2024-11-17 03:26:45,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:26:45,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-17 03:26:45,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:26:45,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-17 03:26:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=271, Unknown=15, NotChecked=0, Total=342 [2024-11-17 03:26:46,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-17 03:26:51,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-17 03:26:53,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-17 03:27:00,095 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] [2024-11-17 03:27:01,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 110 [2024-11-17 03:27:01,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 109 transitions, 486 flow. Second operand has 19 states, 19 states have (on average 23.0) internal successors, (437), 19 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:27:01,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:27:01,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 110 [2024-11-17 03:27:01,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:27:03,077 INFO L124 PetriNetUnfolderBase]: 1519/2686 cut-off events. [2024-11-17 03:27:03,078 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2024-11-17 03:27:03,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5361 conditions, 2686 events. 1519/2686 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16041 event pairs, 1287 based on Foata normal form. 0/1822 useless extension candidates. Maximal degree in co-relation 5128. Up to 2347 conditions per place. [2024-11-17 03:27:03,095 INFO L140 encePairwiseOnDemand]: 101/110 looper letters, 68 selfloop transitions, 27 changer transitions 0/114 dead transitions. [2024-11-17 03:27:03,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 114 transitions, 690 flow [2024-11-17 03:27:03,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 03:27:03,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 03:27:03,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 329 transitions. [2024-11-17 03:27:03,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24924242424242424 [2024-11-17 03:27:03,100 INFO L175 Difference]: Start difference. First operand has 125 places, 109 transitions, 486 flow. Second operand 12 states and 329 transitions. [2024-11-17 03:27:03,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 114 transitions, 690 flow [2024-11-17 03:27:03,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 114 transitions, 672 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-17 03:27:03,103 INFO L231 Difference]: Finished difference. Result has 134 places, 108 transitions, 518 flow [2024-11-17 03:27:03,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=518, PETRI_PLACES=134, PETRI_TRANSITIONS=108} [2024-11-17 03:27:03,103 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 32 predicate places. [2024-11-17 03:27:03,103 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 108 transitions, 518 flow [2024-11-17 03:27:03,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 23.0) internal successors, (437), 19 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:27:03,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:27:03,104 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:27:03,114 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 [2024-11-17 03:27:03,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:27:03,309 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:27:03,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:27:03,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1518173549, now seen corresponding path program 1 times [2024-11-17 03:27:03,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:27:03,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871051591] [2024-11-17 03:27:03,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:27:03,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:27:03,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:27:03,314 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:27:03,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-17 03:27:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:27:03,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-17 03:27:03,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:27:03,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-17 03:27:04,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-17 03:27:04,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-17 03:27:04,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-17 03:27:04,318 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2024-11-17 03:27:04,318 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 [2024-11-17 03:27:04,352 INFO L349 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2024-11-17 03:27:04,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2024-11-17 03:27:04,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2024-11-17 03:27:04,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-17 03:27:04,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-17 03:27:04,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2024-11-17 03:27:04,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2024-11-17 03:27:04,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 03:27:04,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-17 03:27:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:27:04,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:27:04,620 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_683 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_684) |c_~#c~0.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_683) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_684 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_684) |c_~#c~0.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-17 03:27:04,671 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_684 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_684) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_683 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_684) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_683) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-17 03:27:04,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:27:04,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 38 [2024-11-17 03:27:04,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:27:04,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 55 [2024-11-17 03:27:04,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-17 03:27:05,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:27:05,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2024-11-17 03:27:05,043 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:27:05,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2024-11-17 03:27:05,055 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 03:27:05,076 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:27:05,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 41 [2024-11-17 03:27:05,082 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 03:27:05,099 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:27:05,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 30 [2024-11-17 03:27:06,554 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 03:27:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-17 03:27:06,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:27:06,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871051591] [2024-11-17 03:27:06,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871051591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:27:06,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:27:06,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-11-17 03:27:06,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242704786] [2024-11-17 03:27:06,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:27:06,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 03:27:06,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:27:06,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 03:27:06,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=175, Unknown=2, NotChecked=54, Total=272 [2024-11-17 03:27:07,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 110 [2024-11-17 03:27:07,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 108 transitions, 518 flow. Second operand has 17 states, 17 states have (on average 17.235294117647058) internal successors, (293), 17 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:27:07,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:27:07,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 110 [2024-11-17 03:27:07,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:27:09,736 INFO L124 PetriNetUnfolderBase]: 2200/3553 cut-off events. [2024-11-17 03:27:09,736 INFO L125 PetriNetUnfolderBase]: For 347/347 co-relation queries the response was YES. [2024-11-17 03:27:09,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7318 conditions, 3553 events. 2200/3553 cut-off events. For 347/347 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 20180 event pairs, 1920 based on Foata normal form. 6/2064 useless extension candidates. Maximal degree in co-relation 7075. Up to 3406 conditions per place. [2024-11-17 03:27:09,757 INFO L140 encePairwiseOnDemand]: 99/110 looper letters, 73 selfloop transitions, 27 changer transitions 0/113 dead transitions. [2024-11-17 03:27:09,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 113 transitions, 732 flow [2024-11-17 03:27:09,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 03:27:09,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-17 03:27:09,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 277 transitions. [2024-11-17 03:27:09,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.19370629370629372 [2024-11-17 03:27:09,760 INFO L175 Difference]: Start difference. First operand has 134 places, 108 transitions, 518 flow. Second operand 13 states and 277 transitions. [2024-11-17 03:27:09,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 113 transitions, 732 flow [2024-11-17 03:27:09,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 113 transitions, 667 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-11-17 03:27:09,764 INFO L231 Difference]: Finished difference. Result has 137 places, 110 transitions, 521 flow [2024-11-17 03:27:09,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=521, PETRI_PLACES=137, PETRI_TRANSITIONS=110} [2024-11-17 03:27:09,764 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 35 predicate places. [2024-11-17 03:27:09,764 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 110 transitions, 521 flow [2024-11-17 03:27:09,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.235294117647058) internal successors, (293), 17 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:27:09,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:27:09,765 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:27:09,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2024-11-17 03:27:09,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:27:09,966 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:27:09,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:27:09,966 INFO L85 PathProgramCache]: Analyzing trace with hash -2058194431, now seen corresponding path program 2 times [2024-11-17 03:27:09,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:27:09,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722584677] [2024-11-17 03:27:09,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:27:09,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:27:09,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:27:09,968 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:27:09,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-17 03:27:10,675 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:27:10,675 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:27:10,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:27:10,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:27:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:27:10,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:27:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:27:10,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:27:10,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722584677] [2024-11-17 03:27:10,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722584677] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:27:10,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:27:10,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-17 03:27:10,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790954026] [2024-11-17 03:27:10,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:27:10,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 03:27:10,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:27:10,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 03:27:10,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-17 03:27:10,870 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 110 [2024-11-17 03:27:10,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 110 transitions, 521 flow. Second operand has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:27:10,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:27:10,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 110 [2024-11-17 03:27:10,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:27:11,694 INFO L124 PetriNetUnfolderBase]: 391/1095 cut-off events. [2024-11-17 03:27:11,695 INFO L125 PetriNetUnfolderBase]: For 986/986 co-relation queries the response was YES. [2024-11-17 03:27:11,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2358 conditions, 1095 events. 391/1095 cut-off events. For 986/986 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5501 event pairs, 287 based on Foata normal form. 12/939 useless extension candidates. Maximal degree in co-relation 1898. Up to 610 conditions per place. [2024-11-17 03:27:11,700 INFO L140 encePairwiseOnDemand]: 106/110 looper letters, 96 selfloop transitions, 24 changer transitions 0/170 dead transitions. [2024-11-17 03:27:11,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 170 transitions, 1341 flow [2024-11-17 03:27:11,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 03:27:11,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 03:27:11,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 882 transitions. [2024-11-17 03:27:11,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6681818181818182 [2024-11-17 03:27:11,706 INFO L175 Difference]: Start difference. First operand has 137 places, 110 transitions, 521 flow. Second operand 12 states and 882 transitions. [2024-11-17 03:27:11,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 170 transitions, 1341 flow [2024-11-17 03:27:11,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 170 transitions, 1171 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-17 03:27:11,711 INFO L231 Difference]: Finished difference. Result has 145 places, 124 transitions, 719 flow [2024-11-17 03:27:11,711 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=719, PETRI_PLACES=145, PETRI_TRANSITIONS=124} [2024-11-17 03:27:11,712 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 43 predicate places. [2024-11-17 03:27:11,712 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 124 transitions, 719 flow [2024-11-17 03:27:11,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:27:11,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:27:11,714 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:27:11,725 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 (18)] Ended with exit code 0 [2024-11-17 03:27:11,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:27:11,915 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:27:11,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:27:11,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1969067717, now seen corresponding path program 3 times [2024-11-17 03:27:11,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:27:11,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272283064] [2024-11-17 03:27:11,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:27:11,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:27:11,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:27:11,918 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:27:11,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-17 03:27:31,075 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-17 03:27:31,078 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:27:31,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:27:31,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:27:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 3 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:27:31,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:27:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 3 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:27:31,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-17 03:27:31,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272283064] [2024-11-17 03:27:31,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272283064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:27:31,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:27:31,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-17 03:27:31,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770169211] [2024-11-17 03:27:31,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:27:31,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 03:27:31,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-17 03:27:31,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 03:27:31,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2024-11-17 03:27:31,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 110 [2024-11-17 03:27:31,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 124 transitions, 719 flow. Second operand has 24 states, 24 states have (on average 70.5) internal successors, (1692), 24 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:27:31,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:27:31,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 110 [2024-11-17 03:27:31,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:27:34,933 INFO L124 PetriNetUnfolderBase]: 391/1359 cut-off events. [2024-11-17 03:27:34,937 INFO L125 PetriNetUnfolderBase]: For 3410/3410 co-relation queries the response was YES. [2024-11-17 03:27:34,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3249 conditions, 1359 events. 391/1359 cut-off events. For 3410/3410 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5531 event pairs, 287 based on Foata normal form. 24/1215 useless extension candidates. Maximal degree in co-relation 2335. Up to 610 conditions per place. [2024-11-17 03:27:34,948 INFO L140 encePairwiseOnDemand]: 106/110 looper letters, 168 selfloop transitions, 48 changer transitions 0/266 dead transitions. [2024-11-17 03:27:34,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 266 transitions, 2439 flow [2024-11-17 03:27:34,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 03:27:34,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 03:27:34,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1740 transitions. [2024-11-17 03:27:34,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-11-17 03:27:34,955 INFO L175 Difference]: Start difference. First operand has 145 places, 124 transitions, 719 flow. Second operand 24 states and 1740 transitions. [2024-11-17 03:27:34,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 266 transitions, 2439 flow [2024-11-17 03:27:34,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 266 transitions, 2427 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:27:34,976 INFO L231 Difference]: Finished difference. Result has 178 places, 150 transitions, 1275 flow [2024-11-17 03:27:34,976 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1275, PETRI_PLACES=178, PETRI_TRANSITIONS=150} [2024-11-17 03:27:34,977 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 76 predicate places. [2024-11-17 03:27:34,977 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 150 transitions, 1275 flow [2024-11-17 03:27:34,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 70.5) internal successors, (1692), 24 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:27:34,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:27:34,977 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:27:35,025 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 [2024-11-17 03:27:35,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:27:35,178 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 03:27:35,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:27:35,179 INFO L85 PathProgramCache]: Analyzing trace with hash 223768239, now seen corresponding path program 4 times [2024-11-17 03:27:35,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-17 03:27:35,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401251952] [2024-11-17 03:27:35,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 03:27:35,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-17 03:27:35,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-17 03:27:35,188 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-17 03:27:35,191 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