./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.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 dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:37:40,618 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:37:40,687 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 17:37:40,693 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:37:40,694 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:37:40,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:37:40,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:37:40,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:37:40,718 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:37:40,719 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:37:40,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:37:40,719 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:37:40,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:37:40,720 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:37:40,721 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:37:40,721 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:37:40,722 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:37:40,723 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:37:40,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:37:40,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:37:40,725 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:37:40,728 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:37:40,728 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:37:40,728 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:37:40,728 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:37:40,729 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:37:40,729 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:37:40,729 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:37:40,729 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:37:40,730 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:37:40,730 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:37:40,730 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:37:40,730 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:37:40,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:37:40,731 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:37:40,731 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:37:40,731 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 17:37:40,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 17:37:40,732 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:37:40,732 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:37:40,732 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:37:40,733 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:37:40,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 [2024-11-20 17:37:41,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:37:41,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:37:41,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:37:41,045 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:37:41,045 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:37:41,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-11-20 17:37:42,525 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:37:42,793 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:37:42,794 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-11-20 17:37:42,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec44d2656/1179156594df444fa6b79adcccaaeeec/FLAG69a7a2389 [2024-11-20 17:37:42,828 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec44d2656/1179156594df444fa6b79adcccaaeeec [2024-11-20 17:37:42,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:37:42,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:37:42,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:37:42,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:37:42,841 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:37:42,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:37:42" (1/1) ... [2024-11-20 17:37:42,844 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb9a77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:42, skipping insertion in model container [2024-11-20 17:37:42,844 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:37:42" (1/1) ... [2024-11-20 17:37:42,895 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:37:43,329 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-20 17:37:43,330 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-20 17:37:43,330 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-20 17:37:43,331 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-20 17:37:43,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:37:43,416 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) [2024-11-20 17:37:43,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e74ff56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:43, skipping insertion in model container [2024-11-20 17:37:43,418 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:37:43,418 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-20 17:37:43,420 INFO L158 Benchmark]: Toolchain (without parser) took 586.28ms. Allocated memory is still 167.8MB. Free memory was 111.0MB in the beginning and 90.9MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-20 17:37:43,421 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 167.8MB. Free memory was 127.8MB in the beginning and 127.6MB in the end (delta: 252.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 17:37:43,421 INFO L158 Benchmark]: CACSL2BoogieTranslator took 582.54ms. Allocated memory is still 167.8MB. Free memory was 110.6MB in the beginning and 90.9MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-20 17:37:43,423 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 167.8MB. Free memory was 127.8MB in the beginning and 127.6MB in the end (delta: 252.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 582.54ms. Allocated memory is still 167.8MB. Free memory was 110.6MB in the beginning and 90.9MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1058]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.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 dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:37:45,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:37:45,509 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-20 17:37:45,516 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:37:45,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:37:45,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:37:45,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:37:45,554 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:37:45,555 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:37:45,555 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:37:45,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:37:45,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:37:45,557 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:37:45,557 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:37:45,559 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:37:45,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:37:45,560 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:37:45,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:37:45,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:37:45,561 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:37:45,564 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:37:45,565 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:37:45,565 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:37:45,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:37:45,565 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:37:45,566 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-20 17:37:45,566 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:37:45,566 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-20 17:37:45,566 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:37:45,566 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:37:45,567 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:37:45,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:37:45,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:37:45,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:37:45,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:37:45,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:37:45,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:37:45,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:37:45,570 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-20 17:37:45,570 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-20 17:37:45,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:37:45,571 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:37:45,571 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:37:45,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:37:45,572 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 [2024-11-20 17:37:45,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:37:45,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:37:45,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:37:45,944 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:37:45,945 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:37:45,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-11-20 17:37:47,443 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:37:47,731 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:37:47,732 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2024-11-20 17:37:47,760 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b7f4fb25/07fbff4767174979b1d2134158d0858e/FLAG224ab910c [2024-11-20 17:37:47,776 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b7f4fb25/07fbff4767174979b1d2134158d0858e [2024-11-20 17:37:47,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:37:47,780 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:37:47,784 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:37:47,784 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:37:47,789 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:37:47,790 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:37:47" (1/1) ... [2024-11-20 17:37:47,791 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e091fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:47, skipping insertion in model container [2024-11-20 17:37:47,791 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:37:47" (1/1) ... [2024-11-20 17:37:47,844 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:37:48,323 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-20 17:37:48,323 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-20 17:37:48,324 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-20 17:37:48,324 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-20 17:37:48,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:37:48,401 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-20 17:37:48,413 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:37:48,440 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-20 17:37:48,441 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-20 17:37:48,441 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-20 17:37:48,442 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-20 17:37:48,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:37:48,477 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:37:48,534 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-20 17:37:48,535 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-20 17:37:48,535 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-20 17:37:48,535 WARN L1674 CHandler]: Possible shadowing of function new [2024-11-20 17:37:48,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:37:48,641 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:37:48,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48 WrapperNode [2024-11-20 17:37:48,642 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:37:48,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:37:48,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:37:48,643 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:37:48,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2024-11-20 17:37:48,676 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2024-11-20 17:37:48,716 INFO L138 Inliner]: procedures = 285, calls = 126, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 303 [2024-11-20 17:37:48,717 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:37:48,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:37:48,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:37:48,718 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:37:48,733 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2024-11-20 17:37:48,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2024-11-20 17:37:48,743 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2024-11-20 17:37:48,791 INFO L175 MemorySlicer]: Split 98 memory accesses to 4 slices as follows [2, 5, 2, 89]. 91 percent of accesses are in the largest equivalence class. The 77 initializations are split as follows [2, 5, 0, 70]. The 12 writes are split as follows [0, 0, 1, 11]. [2024-11-20 17:37:48,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2024-11-20 17:37:48,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2024-11-20 17:37:48,827 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2024-11-20 17:37:48,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2024-11-20 17:37:48,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2024-11-20 17:37:48,850 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2024-11-20 17:37:48,861 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:37:48,865 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:37:48,865 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:37:48,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:37:48,866 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (1/1) ... [2024-11-20 17:37:48,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:37:48,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:37:48,901 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) [2024-11-20 17:37:48,905 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 [2024-11-20 17:37:48,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-20 17:37:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-20 17:37:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-20 17:37:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-20 17:37:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 17:37:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 17:37:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 17:37:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 17:37:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-20 17:37:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 17:37:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-20 17:37:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-20 17:37:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-20 17:37:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-20 17:37:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-20 17:37:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-20 17:37:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-20 17:37:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-20 17:37:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-20 17:37:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-20 17:37:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-20 17:37:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-20 17:37:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-20 17:37:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-20 17:37:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-20 17:37:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-20 17:37:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-20 17:37:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-20 17:37:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 17:37:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:37:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 17:37:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 17:37:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-20 17:37:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-20 17:37:48,951 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-20 17:37:48,951 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-20 17:37:48,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:37:48,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:37:48,953 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 17:37:49,181 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:37:49,183 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:37:50,118 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 17:37:50,119 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:37:51,744 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:37:51,745 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-20 17:37:51,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:37:51 BoogieIcfgContainer [2024-11-20 17:37:51,746 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:37:51,749 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:37:51,750 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:37:51,753 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:37:51,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:37:47" (1/3) ... [2024-11-20 17:37:51,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57946ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:37:51, skipping insertion in model container [2024-11-20 17:37:51,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:37:48" (2/3) ... [2024-11-20 17:37:51,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57946ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:37:51, skipping insertion in model container [2024-11-20 17:37:51,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:37:51" (3/3) ... [2024-11-20 17:37:51,756 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2024-11-20 17:37:51,777 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:37:51,777 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2024-11-20 17:37:51,778 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 17:37:51,906 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-20 17:37:51,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 130 transitions, 267 flow [2024-11-20 17:37:52,012 INFO L124 PetriNetUnfolderBase]: 19/142 cut-off events. [2024-11-20 17:37:52,012 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 17:37:52,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 142 events. 19/142 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 531 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2024-11-20 17:37:52,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 130 transitions, 267 flow [2024-11-20 17:37:52,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 130 transitions, 267 flow [2024-11-20 17:37:52,035 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:37:52,043 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;@515e3f51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:37:52,043 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-20 17:37:52,059 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:37:52,059 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-20 17:37:52,059 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 17:37:52,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:37:52,061 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-20 17:37:52,061 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:37:52,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:37:52,066 INFO L85 PathProgramCache]: Analyzing trace with hash 824147, now seen corresponding path program 1 times [2024-11-20 17:37:52,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:37:52,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151082941] [2024-11-20 17:37:52,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:37:52,082 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 [2024-11-20 17:37:52,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:37:52,086 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) [2024-11-20 17:37:52,107 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 [2024-11-20 17:37:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:37:52,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 17:37:52,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:37:52,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:37:52,375 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:37:52,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:37:52,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151082941] [2024-11-20 17:37:52,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151082941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:37:52,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:37:52,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:37:52,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647771281] [2024-11-20 17:37:52,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:37:52,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:37:52,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:37:52,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:37:52,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:37:52,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 130 [2024-11-20 17:37:52,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 130 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 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) [2024-11-20 17:37:52,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:37:52,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 130 [2024-11-20 17:37:52,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:37:53,275 INFO L124 PetriNetUnfolderBase]: 126/487 cut-off events. [2024-11-20 17:37:53,276 INFO L125 PetriNetUnfolderBase]: For 5/6 co-relation queries the response was YES. [2024-11-20 17:37:53,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 487 events. 126/487 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2675 event pairs, 64 based on Foata normal form. 52/430 useless extension candidates. Maximal degree in co-relation 675. Up to 179 conditions per place. [2024-11-20 17:37:53,283 INFO L140 encePairwiseOnDemand]: 109/130 looper letters, 68 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2024-11-20 17:37:53,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 136 transitions, 423 flow [2024-11-20 17:37:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:37:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:37:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2024-11-20 17:37:53,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6865384615384615 [2024-11-20 17:37:53,303 INFO L175 Difference]: Start difference. First operand has 114 places, 130 transitions, 267 flow. Second operand 4 states and 357 transitions. [2024-11-20 17:37:53,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 136 transitions, 423 flow [2024-11-20 17:37:53,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 136 transitions, 423 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 17:37:53,312 INFO L231 Difference]: Finished difference. Result has 113 places, 113 transitions, 247 flow [2024-11-20 17:37:53,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=113, PETRI_TRANSITIONS=113} [2024-11-20 17:37:53,318 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -1 predicate places. [2024-11-20 17:37:53,319 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 113 transitions, 247 flow [2024-11-20 17:37:53,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 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) [2024-11-20 17:37:53,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:37:53,320 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-20 17:37:53,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-20 17:37:53,520 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 [2024-11-20 17:37:53,521 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:37:53,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:37:53,522 INFO L85 PathProgramCache]: Analyzing trace with hash 824148, now seen corresponding path program 1 times [2024-11-20 17:37:53,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:37:53,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203224792] [2024-11-20 17:37:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:37:53,523 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 [2024-11-20 17:37:53,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:37:53,525 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) [2024-11-20 17:37:53,526 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 [2024-11-20 17:37:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:37:53,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 17:37:53,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:37:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:37:53,752 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:37:53,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:37:53,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203224792] [2024-11-20 17:37:53,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203224792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:37:53,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:37:53,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:37:53,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238459351] [2024-11-20 17:37:53,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:37:53,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:37:53,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:37:53,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:37:53,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:37:54,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 130 [2024-11-20 17:37:54,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 113 transitions, 247 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 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) [2024-11-20 17:37:54,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:37:54,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 130 [2024-11-20 17:37:54,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:37:54,369 INFO L124 PetriNetUnfolderBase]: 128/518 cut-off events. [2024-11-20 17:37:54,369 INFO L125 PetriNetUnfolderBase]: For 24/25 co-relation queries the response was YES. [2024-11-20 17:37:54,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 858 conditions, 518 events. 128/518 cut-off events. For 24/25 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2781 event pairs, 105 based on Foata normal form. 3/409 useless extension candidates. Maximal degree in co-relation 743. Up to 276 conditions per place. [2024-11-20 17:37:54,373 INFO L140 encePairwiseOnDemand]: 122/130 looper letters, 49 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2024-11-20 17:37:54,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 117 transitions, 369 flow [2024-11-20 17:37:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:37:54,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:37:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2024-11-20 17:37:54,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-20 17:37:54,376 INFO L175 Difference]: Start difference. First operand has 113 places, 113 transitions, 247 flow. Second operand 4 states and 325 transitions. [2024-11-20 17:37:54,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 117 transitions, 369 flow [2024-11-20 17:37:54,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 117 transitions, 357 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 17:37:54,380 INFO L231 Difference]: Finished difference. Result has 115 places, 117 transitions, 280 flow [2024-11-20 17:37:54,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=115, PETRI_TRANSITIONS=117} [2024-11-20 17:37:54,381 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 1 predicate places. [2024-11-20 17:37:54,381 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 117 transitions, 280 flow [2024-11-20 17:37:54,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 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) [2024-11-20 17:37:54,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:37:54,382 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 17:37:54,388 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 (3)] Forceful destruction successful, exit code 0 [2024-11-20 17:37:54,583 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 [2024-11-20 17:37:54,584 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:37:54,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:37:54,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1216856412, now seen corresponding path program 1 times [2024-11-20 17:37:54,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:37:54,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95317292] [2024-11-20 17:37:54,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:37:54,586 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 [2024-11-20 17:37:54,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:37:54,588 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) [2024-11-20 17:37:54,591 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 [2024-11-20 17:37:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:37:54,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 17:37:54,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:37:54,773 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 [2024-11-20 17:37:54,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:37:54,780 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:37:54,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:37:54,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95317292] [2024-11-20 17:37:54,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95317292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:37:54,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:37:54,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:37:54,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158165357] [2024-11-20 17:37:54,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:37:54,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:37:54,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:37:54,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:37:54,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:37:54,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 130 [2024-11-20 17:37:54,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 117 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2024-11-20 17:37:54,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:37:54,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 130 [2024-11-20 17:37:54,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:37:55,160 INFO L124 PetriNetUnfolderBase]: 128/517 cut-off events. [2024-11-20 17:37:55,160 INFO L125 PetriNetUnfolderBase]: For 13/14 co-relation queries the response was YES. [2024-11-20 17:37:55,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 517 events. 128/517 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2774 event pairs, 105 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 810. Up to 272 conditions per place. [2024-11-20 17:37:55,164 INFO L140 encePairwiseOnDemand]: 127/130 looper letters, 47 selfloop transitions, 3 changer transitions 0/116 dead transitions. [2024-11-20 17:37:55,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 116 transitions, 378 flow [2024-11-20 17:37:55,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:37:55,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:37:55,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2024-11-20 17:37:55,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.658974358974359 [2024-11-20 17:37:55,166 INFO L175 Difference]: Start difference. First operand has 115 places, 117 transitions, 280 flow. Second operand 3 states and 257 transitions. [2024-11-20 17:37:55,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 116 transitions, 378 flow [2024-11-20 17:37:55,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 116 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:37:55,169 INFO L231 Difference]: Finished difference. Result has 115 places, 116 transitions, 281 flow [2024-11-20 17:37:55,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=281, PETRI_PLACES=115, PETRI_TRANSITIONS=116} [2024-11-20 17:37:55,172 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 1 predicate places. [2024-11-20 17:37:55,173 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 116 transitions, 281 flow [2024-11-20 17:37:55,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2024-11-20 17:37:55,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:37:55,174 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 17:37:55,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-20 17:37:55,378 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 [2024-11-20 17:37:55,379 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:37:55,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:37:55,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1216856411, now seen corresponding path program 1 times [2024-11-20 17:37:55,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:37:55,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993406079] [2024-11-20 17:37:55,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:37:55,381 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 [2024-11-20 17:37:55,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:37:55,384 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) [2024-11-20 17:37:55,386 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 [2024-11-20 17:37:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:37:55,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 17:37:55,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:37:55,540 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 [2024-11-20 17:37:55,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:37:55,550 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:37:55,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:37:55,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993406079] [2024-11-20 17:37:55,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993406079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:37:55,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:37:55,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:37:55,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726129916] [2024-11-20 17:37:55,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:37:55,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:37:55,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:37:55,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:37:55,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:37:55,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 130 [2024-11-20 17:37:55,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 116 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2024-11-20 17:37:55,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:37:55,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 130 [2024-11-20 17:37:55,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:37:55,925 INFO L124 PetriNetUnfolderBase]: 128/516 cut-off events. [2024-11-20 17:37:55,925 INFO L125 PetriNetUnfolderBase]: For 15/16 co-relation queries the response was YES. [2024-11-20 17:37:55,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 516 events. 128/516 cut-off events. For 15/16 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2775 event pairs, 105 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 809. Up to 272 conditions per place. [2024-11-20 17:37:55,930 INFO L140 encePairwiseOnDemand]: 127/130 looper letters, 47 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2024-11-20 17:37:55,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 115 transitions, 379 flow [2024-11-20 17:37:55,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:37:55,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:37:55,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2024-11-20 17:37:55,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.658974358974359 [2024-11-20 17:37:55,936 INFO L175 Difference]: Start difference. First operand has 115 places, 116 transitions, 281 flow. Second operand 3 states and 257 transitions. [2024-11-20 17:37:55,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 115 transitions, 379 flow [2024-11-20 17:37:55,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 115 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:37:55,940 INFO L231 Difference]: Finished difference. Result has 114 places, 115 transitions, 279 flow [2024-11-20 17:37:55,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=114, PETRI_TRANSITIONS=115} [2024-11-20 17:37:55,942 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 0 predicate places. [2024-11-20 17:37:55,943 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 115 transitions, 279 flow [2024-11-20 17:37:55,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2024-11-20 17:37:55,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:37:55,943 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-20 17:37:55,951 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 (5)] Forceful destruction successful, exit code 0 [2024-11-20 17:37:56,143 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 [2024-11-20 17:37:56,144 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:37:56,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:37:56,145 INFO L85 PathProgramCache]: Analyzing trace with hash 932159261, now seen corresponding path program 1 times [2024-11-20 17:37:56,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:37:56,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637491451] [2024-11-20 17:37:56,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:37:56,146 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 [2024-11-20 17:37:56,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:37:56,149 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) [2024-11-20 17:37:56,150 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 [2024-11-20 17:37:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:37:56,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 17:37:56,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:37:56,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:37:56,295 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:37:56,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:37:56,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637491451] [2024-11-20 17:37:56,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637491451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:37:56,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:37:56,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:37:56,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875056742] [2024-11-20 17:37:56,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:37:56,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:37:56,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:37:56,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:37:56,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:37:56,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 130 [2024-11-20 17:37:56,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 115 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2024-11-20 17:37:56,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:37:56,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 130 [2024-11-20 17:37:56,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:37:56,546 INFO L124 PetriNetUnfolderBase]: 127/538 cut-off events. [2024-11-20 17:37:56,546 INFO L125 PetriNetUnfolderBase]: For 17/18 co-relation queries the response was YES. [2024-11-20 17:37:56,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 538 events. 127/538 cut-off events. For 17/18 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2818 event pairs, 105 based on Foata normal form. 2/418 useless extension candidates. Maximal degree in co-relation 840. Up to 272 conditions per place. [2024-11-20 17:37:56,549 INFO L140 encePairwiseOnDemand]: 127/130 looper letters, 51 selfloop transitions, 3 changer transitions 0/119 dead transitions. [2024-11-20 17:37:56,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 119 transitions, 399 flow [2024-11-20 17:37:56,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:37:56,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:37:56,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2024-11-20 17:37:56,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6794871794871795 [2024-11-20 17:37:56,551 INFO L175 Difference]: Start difference. First operand has 114 places, 115 transitions, 279 flow. Second operand 3 states and 265 transitions. [2024-11-20 17:37:56,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 119 transitions, 399 flow [2024-11-20 17:37:56,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 119 transitions, 389 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:37:56,555 INFO L231 Difference]: Finished difference. Result has 115 places, 115 transitions, 284 flow [2024-11-20 17:37:56,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=115, PETRI_TRANSITIONS=115} [2024-11-20 17:37:56,556 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 1 predicate places. [2024-11-20 17:37:56,556 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 115 transitions, 284 flow [2024-11-20 17:37:56,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2024-11-20 17:37:56,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:37:56,557 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:37:56,563 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 [2024-11-20 17:37:56,757 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 [2024-11-20 17:37:56,758 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:37:56,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:37:56,758 INFO L85 PathProgramCache]: Analyzing trace with hash 932157749, now seen corresponding path program 1 times [2024-11-20 17:37:56,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:37:56,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752104372] [2024-11-20 17:37:56,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:37:56,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:37:56,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:37:56,763 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) [2024-11-20 17:37:56,764 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 [2024-11-20 17:37:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:37:56,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 17:37:56,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:37:56,942 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 [2024-11-20 17:37:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:37:56,972 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:37:56,973 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:37:56,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752104372] [2024-11-20 17:37:56,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752104372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:37:56,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:37:56,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:37:56,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895174227] [2024-11-20 17:37:56,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:37:56,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:37:56,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:37:56,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:37:56,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:37:57,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 130 [2024-11-20 17:37:57,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 115 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 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) [2024-11-20 17:37:57,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:37:57,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 130 [2024-11-20 17:37:57,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:37:57,383 INFO L124 PetriNetUnfolderBase]: 127/534 cut-off events. [2024-11-20 17:37:57,383 INFO L125 PetriNetUnfolderBase]: For 32/33 co-relation queries the response was YES. [2024-11-20 17:37:57,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 534 events. 127/534 cut-off events. For 32/33 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2803 event pairs, 105 based on Foata normal form. 2/418 useless extension candidates. Maximal degree in co-relation 836. Up to 276 conditions per place. [2024-11-20 17:37:57,387 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 48 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2024-11-20 17:37:57,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 113 transitions, 384 flow [2024-11-20 17:37:57,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:37:57,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:37:57,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2024-11-20 17:37:57,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6038461538461538 [2024-11-20 17:37:57,389 INFO L175 Difference]: Start difference. First operand has 115 places, 115 transitions, 284 flow. Second operand 4 states and 314 transitions. [2024-11-20 17:37:57,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 113 transitions, 384 flow [2024-11-20 17:37:57,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 113 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:37:57,392 INFO L231 Difference]: Finished difference. Result has 115 places, 113 transitions, 285 flow [2024-11-20 17:37:57,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=115, PETRI_TRANSITIONS=113} [2024-11-20 17:37:57,393 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 1 predicate places. [2024-11-20 17:37:57,394 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 113 transitions, 285 flow [2024-11-20 17:37:57,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 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) [2024-11-20 17:37:57,394 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:37:57,394 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:37:57,399 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 [2024-11-20 17:37:57,595 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 [2024-11-20 17:37:57,595 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:37:57,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:37:57,596 INFO L85 PathProgramCache]: Analyzing trace with hash 932157748, now seen corresponding path program 1 times [2024-11-20 17:37:57,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:37:57,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491206751] [2024-11-20 17:37:57,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:37:57,597 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 [2024-11-20 17:37:57,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:37:57,600 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) [2024-11-20 17:37:57,601 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 [2024-11-20 17:37:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:37:57,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 17:37:57,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:37:57,783 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 [2024-11-20 17:37:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:37:57,798 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:37:57,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:37:57,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491206751] [2024-11-20 17:37:57,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491206751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:37:57,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:37:57,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:37:57,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735469320] [2024-11-20 17:37:57,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:37:57,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:37:57,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:37:57,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:37:57,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:37:57,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 130 [2024-11-20 17:37:57,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 113 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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) [2024-11-20 17:37:57,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:37:57,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 130 [2024-11-20 17:37:57,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:37:58,197 INFO L124 PetriNetUnfolderBase]: 127/530 cut-off events. [2024-11-20 17:37:58,197 INFO L125 PetriNetUnfolderBase]: For 17/18 co-relation queries the response was YES. [2024-11-20 17:37:58,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 530 events. 127/530 cut-off events. For 17/18 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2788 event pairs, 105 based on Foata normal form. 2/416 useless extension candidates. Maximal degree in co-relation 840. Up to 274 conditions per place. [2024-11-20 17:37:58,200 INFO L140 encePairwiseOnDemand]: 123/130 looper letters, 45 selfloop transitions, 7 changer transitions 0/111 dead transitions. [2024-11-20 17:37:58,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 111 transitions, 385 flow [2024-11-20 17:37:58,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:37:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:37:58,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 370 transitions. [2024-11-20 17:37:58,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5692307692307692 [2024-11-20 17:37:58,203 INFO L175 Difference]: Start difference. First operand has 115 places, 113 transitions, 285 flow. Second operand 5 states and 370 transitions. [2024-11-20 17:37:58,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 111 transitions, 385 flow [2024-11-20 17:37:58,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 111 transitions, 377 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 17:37:58,210 INFO L231 Difference]: Finished difference. Result has 114 places, 111 transitions, 287 flow [2024-11-20 17:37:58,211 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=287, PETRI_PLACES=114, PETRI_TRANSITIONS=111} [2024-11-20 17:37:58,211 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 0 predicate places. [2024-11-20 17:37:58,212 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 287 flow [2024-11-20 17:37:58,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 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) [2024-11-20 17:37:58,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:37:58,212 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:37:58,219 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 [2024-11-20 17:37:58,413 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 [2024-11-20 17:37:58,413 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:37:58,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:37:58,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1844541978, now seen corresponding path program 1 times [2024-11-20 17:37:58,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:37:58,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127577820] [2024-11-20 17:37:58,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:37:58,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:37:58,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:37:58,434 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) [2024-11-20 17:37:58,435 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 [2024-11-20 17:37:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:37:58,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 17:37:58,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:37:59,010 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-20 17:37:59,011 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 [2024-11-20 17:37:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:37:59,064 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:37:59,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:37:59,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127577820] [2024-11-20 17:37:59,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127577820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:37:59,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:37:59,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:37:59,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282312478] [2024-11-20 17:37:59,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:37:59,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:37:59,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:37:59,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:37:59,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:37:59,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 130 [2024-11-20 17:37:59,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 111 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 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) [2024-11-20 17:37:59,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:37:59,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 130 [2024-11-20 17:37:59,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:37:59,542 INFO L124 PetriNetUnfolderBase]: 126/500 cut-off events. [2024-11-20 17:37:59,542 INFO L125 PetriNetUnfolderBase]: For 26/27 co-relation queries the response was YES. [2024-11-20 17:37:59,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 500 events. 126/500 cut-off events. For 26/27 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2623 event pairs, 64 based on Foata normal form. 2/396 useless extension candidates. Maximal degree in co-relation 812. Up to 182 conditions per place. [2024-11-20 17:37:59,545 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 69 selfloop transitions, 5 changer transitions 0/132 dead transitions. [2024-11-20 17:37:59,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 132 transitions, 477 flow [2024-11-20 17:37:59,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:37:59,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:37:59,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 336 transitions. [2024-11-20 17:37:59,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6461538461538462 [2024-11-20 17:37:59,550 INFO L175 Difference]: Start difference. First operand has 114 places, 111 transitions, 287 flow. Second operand 4 states and 336 transitions. [2024-11-20 17:37:59,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 132 transitions, 477 flow [2024-11-20 17:37:59,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 132 transitions, 463 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 17:37:59,555 INFO L231 Difference]: Finished difference. Result has 111 places, 109 transitions, 279 flow [2024-11-20 17:37:59,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=111, PETRI_TRANSITIONS=109} [2024-11-20 17:37:59,556 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -3 predicate places. [2024-11-20 17:37:59,557 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 109 transitions, 279 flow [2024-11-20 17:37:59,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 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) [2024-11-20 17:37:59,557 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:37:59,558 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:37:59,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-11-20 17:37:59,758 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 [2024-11-20 17:37:59,759 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:37:59,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:37:59,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1844541977, now seen corresponding path program 1 times [2024-11-20 17:37:59,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:37:59,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193228528] [2024-11-20 17:37:59,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:37:59,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:37:59,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:37:59,761 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) [2024-11-20 17:37:59,762 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 [2024-11-20 17:38:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:38:00,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 17:38:00,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:38:00,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 17:38:00,377 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 [2024-11-20 17:38:00,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:38:00,434 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:38:00,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:38:00,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193228528] [2024-11-20 17:38:00,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193228528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:38:00,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:38:00,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:38:00,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635851216] [2024-11-20 17:38:00,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:38:00,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:38:00,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:38:00,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:38:00,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:38:00,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 130 [2024-11-20 17:38:00,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 109 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 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) [2024-11-20 17:38:00,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:38:00,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 130 [2024-11-20 17:38:00,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:38:01,005 INFO L124 PetriNetUnfolderBase]: 129/558 cut-off events. [2024-11-20 17:38:01,005 INFO L125 PetriNetUnfolderBase]: For 51/52 co-relation queries the response was YES. [2024-11-20 17:38:01,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 558 events. 129/558 cut-off events. For 51/52 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3042 event pairs, 106 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 856. Up to 283 conditions per place. [2024-11-20 17:38:01,008 INFO L140 encePairwiseOnDemand]: 124/130 looper letters, 55 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2024-11-20 17:38:01,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 429 flow [2024-11-20 17:38:01,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:38:01,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:38:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 323 transitions. [2024-11-20 17:38:01,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6211538461538462 [2024-11-20 17:38:01,010 INFO L175 Difference]: Start difference. First operand has 111 places, 109 transitions, 279 flow. Second operand 4 states and 323 transitions. [2024-11-20 17:38:01,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 429 flow [2024-11-20 17:38:01,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 116 transitions, 413 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 17:38:01,013 INFO L231 Difference]: Finished difference. Result has 113 places, 113 transitions, 315 flow [2024-11-20 17:38:01,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=315, PETRI_PLACES=113, PETRI_TRANSITIONS=113} [2024-11-20 17:38:01,013 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -1 predicate places. [2024-11-20 17:38:01,014 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 113 transitions, 315 flow [2024-11-20 17:38:01,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 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) [2024-11-20 17:38:01,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:38:01,014 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:38:01,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-11-20 17:38:01,218 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 [2024-11-20 17:38:01,219 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:38:01,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:38:01,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1346225552, now seen corresponding path program 1 times [2024-11-20 17:38:01,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:38:01,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929456952] [2024-11-20 17:38:01,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:38:01,220 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 [2024-11-20 17:38:01,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:38:01,221 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) [2024-11-20 17:38:01,222 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 [2024-11-20 17:38:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:38:01,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-20 17:38:01,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:38:01,931 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 [2024-11-20 17:38:01,950 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 [2024-11-20 17:38:02,008 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 [2024-11-20 17:38:02,030 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 [2024-11-20 17:38:02,088 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-20 17:38:02,089 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 [2024-11-20 17:38:02,105 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 [2024-11-20 17:38:02,163 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 [2024-11-20 17:38:02,176 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 [2024-11-20 17:38:02,231 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 [2024-11-20 17:38:02,247 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 [2024-11-20 17:38:02,288 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 [2024-11-20 17:38:02,296 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 [2024-11-20 17:38:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:38:02,370 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:38:02,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:38:02,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929456952] [2024-11-20 17:38:02,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929456952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:38:02,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:38:02,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 17:38:02,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103166250] [2024-11-20 17:38:02,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:38:02,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 17:38:02,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:38:02,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 17:38:02,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-20 17:38:03,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 130 [2024-11-20 17:38:03,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 113 transitions, 315 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) [2024-11-20 17:38:03,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:38:03,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 130 [2024-11-20 17:38:03,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:38:04,325 INFO L124 PetriNetUnfolderBase]: 129/557 cut-off events. [2024-11-20 17:38:04,325 INFO L125 PetriNetUnfolderBase]: For 25/26 co-relation queries the response was YES. [2024-11-20 17:38:04,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 557 events. 129/557 cut-off events. For 25/26 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3017 event pairs, 106 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 867. Up to 296 conditions per place. [2024-11-20 17:38:04,329 INFO L140 encePairwiseOnDemand]: 118/130 looper letters, 70 selfloop transitions, 11 changer transitions 0/129 dead transitions. [2024-11-20 17:38:04,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 129 transitions, 515 flow [2024-11-20 17:38:04,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:38:04,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:38:04,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 642 transitions. [2024-11-20 17:38:04,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4489510489510489 [2024-11-20 17:38:04,331 INFO L175 Difference]: Start difference. First operand has 113 places, 113 transitions, 315 flow. Second operand 11 states and 642 transitions. [2024-11-20 17:38:04,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 129 transitions, 515 flow [2024-11-20 17:38:04,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 129 transitions, 513 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:38:04,335 INFO L231 Difference]: Finished difference. Result has 127 places, 118 transitions, 371 flow [2024-11-20 17:38:04,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=371, PETRI_PLACES=127, PETRI_TRANSITIONS=118} [2024-11-20 17:38:04,336 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 13 predicate places. [2024-11-20 17:38:04,336 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 118 transitions, 371 flow [2024-11-20 17:38:04,337 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) [2024-11-20 17:38:04,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:38:04,337 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:38:04,344 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 [2024-11-20 17:38:04,537 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 [2024-11-20 17:38:04,538 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:38:04,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:38:04,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1346225553, now seen corresponding path program 1 times [2024-11-20 17:38:04,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:38:04,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172701082] [2024-11-20 17:38:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:38:04,539 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 [2024-11-20 17:38:04,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:38:04,540 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) [2024-11-20 17:38:04,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-20 17:38:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:38:05,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-20 17:38:05,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:38:05,227 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 [2024-11-20 17:38:05,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-20 17:38:05,345 INFO L349 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2024-11-20 17:38:05,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 16 [2024-11-20 17:38:05,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2024-11-20 17:38:05,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2024-11-20 17:38:05,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2024-11-20 17:38:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:38:05,503 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:38:05,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:38:05,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172701082] [2024-11-20 17:38:05,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172701082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:38:05,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:38:05,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 17:38:05,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588362043] [2024-11-20 17:38:05,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:38:05,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 17:38:05,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:38:05,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 17:38:05,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-20 17:38:06,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 130 [2024-11-20 17:38:06,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 118 transitions, 371 flow. Second operand has 10 states, 10 states have (on average 58.0) internal successors, (580), 10 states have internal predecessors, (580), 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) [2024-11-20 17:38:06,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:38:06,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 130 [2024-11-20 17:38:06,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:38:07,394 INFO L124 PetriNetUnfolderBase]: 127/527 cut-off events. [2024-11-20 17:38:07,394 INFO L125 PetriNetUnfolderBase]: For 36/37 co-relation queries the response was YES. [2024-11-20 17:38:07,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 527 events. 127/527 cut-off events. For 36/37 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2873 event pairs, 64 based on Foata normal form. 2/427 useless extension candidates. Maximal degree in co-relation 876. Up to 194 conditions per place. [2024-11-20 17:38:07,397 INFO L140 encePairwiseOnDemand]: 118/130 looper letters, 77 selfloop transitions, 20 changer transitions 0/149 dead transitions. [2024-11-20 17:38:07,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 149 transitions, 637 flow [2024-11-20 17:38:07,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:38:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:38:07,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 713 transitions. [2024-11-20 17:38:07,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4986013986013986 [2024-11-20 17:38:07,400 INFO L175 Difference]: Start difference. First operand has 127 places, 118 transitions, 371 flow. Second operand 11 states and 713 transitions. [2024-11-20 17:38:07,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 149 transitions, 637 flow [2024-11-20 17:38:07,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 149 transitions, 633 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:38:07,405 INFO L231 Difference]: Finished difference. Result has 140 places, 123 transitions, 459 flow [2024-11-20 17:38:07,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=459, PETRI_PLACES=140, PETRI_TRANSITIONS=123} [2024-11-20 17:38:07,406 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 26 predicate places. [2024-11-20 17:38:07,406 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 123 transitions, 459 flow [2024-11-20 17:38:07,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 58.0) internal successors, (580), 10 states have internal predecessors, (580), 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) [2024-11-20 17:38:07,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:38:07,407 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:38:07,414 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 [2024-11-20 17:38:07,607 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 [2024-11-20 17:38:07,608 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:38:07,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:38:07,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1216681622, now seen corresponding path program 1 times [2024-11-20 17:38:07,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:38:07,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646519979] [2024-11-20 17:38:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:38:07,609 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 [2024-11-20 17:38:07,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:38:07,610 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) [2024-11-20 17:38:07,611 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 [2024-11-20 17:38:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:38:07,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 17:38:07,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:38:07,833 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 [2024-11-20 17:38:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:38:07,889 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:38:07,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:38:07,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646519979] [2024-11-20 17:38:07,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646519979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:38:07,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:38:07,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:38:07,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827010269] [2024-11-20 17:38:07,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:38:07,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:38:07,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:38:07,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:38:07,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:38:08,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 130 [2024-11-20 17:38:08,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 123 transitions, 459 flow. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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) [2024-11-20 17:38:08,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:38:08,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 130 [2024-11-20 17:38:08,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:38:08,355 INFO L124 PetriNetUnfolderBase]: 128/545 cut-off events. [2024-11-20 17:38:08,355 INFO L125 PetriNetUnfolderBase]: For 120/121 co-relation queries the response was YES. [2024-11-20 17:38:08,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 545 events. 128/545 cut-off events. For 120/121 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2956 event pairs, 105 based on Foata normal form. 8/446 useless extension candidates. Maximal degree in co-relation 927. Up to 273 conditions per place. [2024-11-20 17:38:08,359 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 50 selfloop transitions, 11 changer transitions 0/121 dead transitions. [2024-11-20 17:38:08,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 121 transitions, 577 flow [2024-11-20 17:38:08,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:38:08,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:38:08,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 320 transitions. [2024-11-20 17:38:08,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-11-20 17:38:08,361 INFO L175 Difference]: Start difference. First operand has 140 places, 123 transitions, 459 flow. Second operand 4 states and 320 transitions. [2024-11-20 17:38:08,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 121 transitions, 577 flow [2024-11-20 17:38:08,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 121 transitions, 553 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-20 17:38:08,366 INFO L231 Difference]: Finished difference. Result has 136 places, 121 transitions, 453 flow [2024-11-20 17:38:08,366 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=453, PETRI_PLACES=136, PETRI_TRANSITIONS=121} [2024-11-20 17:38:08,367 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 22 predicate places. [2024-11-20 17:38:08,367 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 121 transitions, 453 flow [2024-11-20 17:38:08,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 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) [2024-11-20 17:38:08,367 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:38:08,368 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:38:08,377 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 (13)] Forceful destruction successful, exit code 0 [2024-11-20 17:38:08,568 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 [2024-11-20 17:38:08,568 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:38:08,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:38:08,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1216681621, now seen corresponding path program 1 times [2024-11-20 17:38:08,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:38:08,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621864458] [2024-11-20 17:38:08,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:38:08,569 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 [2024-11-20 17:38:08,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:38:08,570 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) [2024-11-20 17:38:08,571 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 [2024-11-20 17:38:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:38:08,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 17:38:08,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:38:08,757 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 [2024-11-20 17:38:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:38:08,772 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:38:08,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:38:08,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621864458] [2024-11-20 17:38:08,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621864458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:38:08,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:38:08,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:38:08,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666835227] [2024-11-20 17:38:08,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:38:08,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:38:08,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:38:08,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:38:08,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:38:08,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 130 [2024-11-20 17:38:08,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 121 transitions, 453 flow. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2024-11-20 17:38:08,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:38:08,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 130 [2024-11-20 17:38:08,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:38:09,154 INFO L124 PetriNetUnfolderBase]: 128/537 cut-off events. [2024-11-20 17:38:09,154 INFO L125 PetriNetUnfolderBase]: For 116/117 co-relation queries the response was YES. [2024-11-20 17:38:09,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 537 events. 128/537 cut-off events. For 116/117 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2891 event pairs, 105 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 904. Up to 273 conditions per place. [2024-11-20 17:38:09,158 INFO L140 encePairwiseOnDemand]: 125/130 looper letters, 52 selfloop transitions, 11 changer transitions 0/119 dead transitions. [2024-11-20 17:38:09,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 119 transitions, 575 flow [2024-11-20 17:38:09,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:38:09,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:38:09,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2024-11-20 17:38:09,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6038461538461538 [2024-11-20 17:38:09,160 INFO L175 Difference]: Start difference. First operand has 136 places, 121 transitions, 453 flow. Second operand 4 states and 314 transitions. [2024-11-20 17:38:09,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 119 transitions, 575 flow [2024-11-20 17:38:09,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 119 transitions, 553 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 17:38:09,164 INFO L231 Difference]: Finished difference. Result has 134 places, 119 transitions, 449 flow [2024-11-20 17:38:09,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=449, PETRI_PLACES=134, PETRI_TRANSITIONS=119} [2024-11-20 17:38:09,165 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 20 predicate places. [2024-11-20 17:38:09,165 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 119 transitions, 449 flow [2024-11-20 17:38:09,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2024-11-20 17:38:09,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:38:09,166 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:38:09,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-11-20 17:38:09,366 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 [2024-11-20 17:38:09,367 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:38:09,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:38:09,367 INFO L85 PathProgramCache]: Analyzing trace with hash -86324787, now seen corresponding path program 1 times [2024-11-20 17:38:09,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:38:09,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916809128] [2024-11-20 17:38:09,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:38:09,368 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 [2024-11-20 17:38:09,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:38:09,370 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) [2024-11-20 17:38:09,371 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 [2024-11-20 17:38:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:38:09,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 17:38:09,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:38:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:38:09,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:38:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:38:09,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:38:09,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916809128] [2024-11-20 17:38:09,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916809128] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:38:09,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:38:09,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-20 17:38:09,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164594384] [2024-11-20 17:38:09,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:38:09,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 17:38:09,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:38:09,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 17:38:09,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-20 17:38:09,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 130 [2024-11-20 17:38:09,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 119 transitions, 449 flow. Second operand has 6 states, 6 states have (on average 73.83333333333333) internal successors, (443), 6 states have internal predecessors, (443), 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) [2024-11-20 17:38:09,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:38:09,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 130 [2024-11-20 17:38:09,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:38:10,017 INFO L124 PetriNetUnfolderBase]: 128/587 cut-off events. [2024-11-20 17:38:10,018 INFO L125 PetriNetUnfolderBase]: For 211/212 co-relation queries the response was YES. [2024-11-20 17:38:10,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1130 conditions, 587 events. 128/587 cut-off events. For 211/212 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3017 event pairs, 105 based on Foata normal form. 6/493 useless extension candidates. Maximal degree in co-relation 967. Up to 269 conditions per place. [2024-11-20 17:38:10,021 INFO L140 encePairwiseOnDemand]: 126/130 looper letters, 65 selfloop transitions, 11 changer transitions 0/134 dead transitions. [2024-11-20 17:38:10,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 134 transitions, 713 flow [2024-11-20 17:38:10,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:38:10,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 17:38:10,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 491 transitions. [2024-11-20 17:38:10,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6294871794871795 [2024-11-20 17:38:10,024 INFO L175 Difference]: Start difference. First operand has 134 places, 119 transitions, 449 flow. Second operand 6 states and 491 transitions. [2024-11-20 17:38:10,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 134 transitions, 713 flow [2024-11-20 17:38:10,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 134 transitions, 669 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 17:38:10,029 INFO L231 Difference]: Finished difference. Result has 140 places, 124 transitions, 515 flow [2024-11-20 17:38:10,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=515, PETRI_PLACES=140, PETRI_TRANSITIONS=124} [2024-11-20 17:38:10,030 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 26 predicate places. [2024-11-20 17:38:10,030 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 124 transitions, 515 flow [2024-11-20 17:38:10,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.83333333333333) internal successors, (443), 6 states have internal predecessors, (443), 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) [2024-11-20 17:38:10,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:38:10,030 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:38:10,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2024-11-20 17:38:10,231 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 [2024-11-20 17:38:10,231 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:38:10,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:38:10,232 INFO L85 PathProgramCache]: Analyzing trace with hash 939446719, now seen corresponding path program 1 times [2024-11-20 17:38:10,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:38:10,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598953155] [2024-11-20 17:38:10,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:38:10,232 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 [2024-11-20 17:38:10,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:38:10,234 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) [2024-11-20 17:38:10,235 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 [2024-11-20 17:38:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:38:11,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-20 17:38:11,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:38:11,077 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 [2024-11-20 17:38:11,166 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-20 17:38:11,218 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2024-11-20 17:38:11,219 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 [2024-11-20 17:38:11,282 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 [2024-11-20 17:38:11,335 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 36 treesize of output 29 [2024-11-20 17:38:11,363 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 [2024-11-20 17:38:11,403 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 [2024-11-20 17:38:11,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:38:11,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:38:11,495 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_574 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_574) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|))))))) is different from false [2024-11-20 17:38:11,656 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 17:38:11,656 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 [2024-11-20 17:38:11,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 17:38:11,671 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 [2024-11-20 17:38:11,683 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 [2024-11-20 17:38:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-20 17:38:13,063 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:38:13,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598953155] [2024-11-20 17:38:13,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598953155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:38:13,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:38:13,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-11-20 17:38:13,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859516376] [2024-11-20 17:38:13,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:38:13,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 17:38:13,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:38:13,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 17:38:13,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=161, Unknown=13, NotChecked=26, Total=240 [2024-11-20 17:38:13,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 130 [2024-11-20 17:38:13,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 124 transitions, 515 flow. Second operand has 16 states, 16 states have (on average 30.125) internal successors, (482), 16 states have internal predecessors, (482), 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) [2024-11-20 17:38:13,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:38:13,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 130 [2024-11-20 17:38:13,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:38:15,091 INFO L124 PetriNetUnfolderBase]: 330/1033 cut-off events. [2024-11-20 17:38:15,092 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-11-20 17:38:15,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2047 conditions, 1033 events. 330/1033 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6062 event pairs, 292 based on Foata normal form. 6/809 useless extension candidates. Maximal degree in co-relation 1870. Up to 678 conditions per place. [2024-11-20 17:38:15,097 INFO L140 encePairwiseOnDemand]: 122/130 looper letters, 79 selfloop transitions, 22 changer transitions 0/129 dead transitions. [2024-11-20 17:38:15,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 129 transitions, 731 flow [2024-11-20 17:38:15,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 17:38:15,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 17:38:15,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 365 transitions. [2024-11-20 17:38:15,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28076923076923077 [2024-11-20 17:38:15,100 INFO L175 Difference]: Start difference. First operand has 140 places, 124 transitions, 515 flow. Second operand 10 states and 365 transitions. [2024-11-20 17:38:15,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 129 transitions, 731 flow [2024-11-20 17:38:15,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 129 transitions, 713 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-20 17:38:15,104 INFO L231 Difference]: Finished difference. Result has 147 places, 123 transitions, 537 flow [2024-11-20 17:38:15,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=537, PETRI_PLACES=147, PETRI_TRANSITIONS=123} [2024-11-20 17:38:15,104 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 33 predicate places. [2024-11-20 17:38:15,105 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 123 transitions, 537 flow [2024-11-20 17:38:15,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 30.125) internal successors, (482), 16 states have internal predecessors, (482), 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) [2024-11-20 17:38:15,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:38:15,105 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:38:15,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2024-11-20 17:38:15,306 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 [2024-11-20 17:38:15,306 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:38:15,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:38:15,306 INFO L85 PathProgramCache]: Analyzing trace with hash 939446720, now seen corresponding path program 1 times [2024-11-20 17:38:15,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:38:15,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952231142] [2024-11-20 17:38:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:38:15,307 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 [2024-11-20 17:38:15,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:38:15,308 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) [2024-11-20 17:38:15,310 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 [2024-11-20 17:38:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:38:16,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-20 17:38:16,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:38:16,275 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 [2024-11-20 17:38:16,420 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 19 treesize of output 1 [2024-11-20 17:38:16,426 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 13 treesize of output 9 [2024-11-20 17:38:16,471 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2024-11-20 17:38:16,472 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 18 treesize of output 20 [2024-11-20 17:38:16,493 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-20 17:38:16,493 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 [2024-11-20 17:38:16,543 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 18 treesize of output 13 [2024-11-20 17:38:16,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-20 17:38:16,596 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 [2024-11-20 17:38:16,605 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 18 treesize of output 13 [2024-11-20 17:38:16,628 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 [2024-11-20 17:38:16,637 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 18 treesize of output 13 [2024-11-20 17:38:16,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 21 treesize of output 9 [2024-11-20 17:38:16,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2024-11-20 17:38:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:38:16,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:38:16,825 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_680 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_680) |c_~#c~0.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_680 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_681 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#3.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_680) |c_~#c~0.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#3.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_681) |c_~#c~0.base|) .cse1)))))) is different from false [2024-11-20 17:38:17,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 17:38:17,119 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 108 treesize of output 109 [2024-11-20 17:38:17,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 17:38:17,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 85 [2024-11-20 17:38:17,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 17:38:17,164 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 118 treesize of output 121 [2024-11-20 17:38:17,203 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 17:38:17,204 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 184 treesize of output 163 [2024-11-20 17:38:17,216 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 91 treesize of output 85 [2024-11-20 17:38:17,224 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 85 treesize of output 79 [2024-11-20 17:38:17,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 17:38:17,269 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 88 treesize of output 112 [2024-11-20 17:38:17,284 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 75 treesize of output 63 [2024-11-20 17:38:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-20 17:38:17,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:38:17,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952231142] [2024-11-20 17:38:17,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952231142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:38:17,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:38:17,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-11-20 17:38:17,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30379986] [2024-11-20 17:38:17,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:38:17,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 17:38:17,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:38:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 17:38:17,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=195, Unknown=7, NotChecked=28, Total=272 [2024-11-20 17:38:18,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 130 [2024-11-20 17:38:18,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 123 transitions, 537 flow. Second operand has 17 states, 17 states have (on average 22.235294117647058) internal successors, (378), 17 states have internal predecessors, (378), 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) [2024-11-20 17:38:18,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:38:18,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 130 [2024-11-20 17:38:18,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:38:20,919 INFO L124 PetriNetUnfolderBase]: 466/1255 cut-off events. [2024-11-20 17:38:20,919 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2024-11-20 17:38:20,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2570 conditions, 1255 events. 466/1255 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7458 event pairs, 422 based on Foata normal form. 6/837 useless extension candidates. Maximal degree in co-relation 2384. Up to 951 conditions per place. [2024-11-20 17:38:20,929 INFO L140 encePairwiseOnDemand]: 120/130 looper letters, 84 selfloop transitions, 24 changer transitions 0/128 dead transitions. [2024-11-20 17:38:20,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 128 transitions, 767 flow [2024-11-20 17:38:20,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:38:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 17:38:20,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 332 transitions. [2024-11-20 17:38:20,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2128205128205128 [2024-11-20 17:38:20,935 INFO L175 Difference]: Start difference. First operand has 147 places, 123 transitions, 537 flow. Second operand 12 states and 332 transitions. [2024-11-20 17:38:20,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 128 transitions, 767 flow [2024-11-20 17:38:20,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 128 transitions, 682 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-11-20 17:38:20,941 INFO L231 Difference]: Finished difference. Result has 147 places, 124 transitions, 508 flow [2024-11-20 17:38:20,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=508, PETRI_PLACES=147, PETRI_TRANSITIONS=124} [2024-11-20 17:38:20,941 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 33 predicate places. [2024-11-20 17:38:20,942 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 124 transitions, 508 flow [2024-11-20 17:38:20,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 22.235294117647058) internal successors, (378), 17 states have internal predecessors, (378), 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) [2024-11-20 17:38:20,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:38:20,943 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1] [2024-11-20 17:38:20,959 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 [2024-11-20 17:38:21,143 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 [2024-11-20 17:38:21,143 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:38:21,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:38:21,144 INFO L85 PathProgramCache]: Analyzing trace with hash 460598045, now seen corresponding path program 2 times [2024-11-20 17:38:21,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:38:21,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261436602] [2024-11-20 17:38:21,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:38:21,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:38:21,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:38:21,146 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) [2024-11-20 17:38:21,147 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 [2024-11-20 17:38:21,924 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:38:21,924 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:38:21,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:38:21,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:38:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:38:22,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:38:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:38:22,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:38:22,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261436602] [2024-11-20 17:38:22,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261436602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:38:22,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:38:22,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-20 17:38:22,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897637433] [2024-11-20 17:38:22,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:38:22,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:38:22,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:38:22,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:38:22,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:38:22,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 130 [2024-11-20 17:38:22,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 124 transitions, 508 flow. Second operand has 12 states, 12 states have (on average 74.91666666666667) internal successors, (899), 12 states have internal predecessors, (899), 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) [2024-11-20 17:38:22,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:38:22,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 130 [2024-11-20 17:38:22,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:38:22,952 INFO L124 PetriNetUnfolderBase]: 128/695 cut-off events. [2024-11-20 17:38:22,952 INFO L125 PetriNetUnfolderBase]: For 492/493 co-relation queries the response was YES. [2024-11-20 17:38:22,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 695 events. 128/695 cut-off events. For 492/493 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2969 event pairs, 105 based on Foata normal form. 12/607 useless extension candidates. Maximal degree in co-relation 1127. Up to 269 conditions per place. [2024-11-20 17:38:22,957 INFO L140 encePairwiseOnDemand]: 126/130 looper letters, 95 selfloop transitions, 23 changer transitions 0/176 dead transitions. [2024-11-20 17:38:22,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 176 transitions, 1188 flow [2024-11-20 17:38:22,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:38:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 17:38:22,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 950 transitions. [2024-11-20 17:38:22,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6089743589743589 [2024-11-20 17:38:22,961 INFO L175 Difference]: Start difference. First operand has 147 places, 124 transitions, 508 flow. Second operand 12 states and 950 transitions. [2024-11-20 17:38:22,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 176 transitions, 1188 flow [2024-11-20 17:38:22,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 176 transitions, 1038 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-11-20 17:38:22,967 INFO L231 Difference]: Finished difference. Result has 155 places, 137 transitions, 690 flow [2024-11-20 17:38:22,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=690, PETRI_PLACES=155, PETRI_TRANSITIONS=137} [2024-11-20 17:38:22,967 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 41 predicate places. [2024-11-20 17:38:22,967 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 137 transitions, 690 flow [2024-11-20 17:38:22,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 74.91666666666667) internal successors, (899), 12 states have internal predecessors, (899), 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) [2024-11-20 17:38:22,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:38:22,968 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1] [2024-11-20 17:38:22,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2024-11-20 17:38:23,168 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 [2024-11-20 17:38:23,169 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:38:23,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:38:23,169 INFO L85 PathProgramCache]: Analyzing trace with hash -891699939, now seen corresponding path program 3 times [2024-11-20 17:38:23,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:38:23,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112175265] [2024-11-20 17:38:23,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:38:23,170 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 [2024-11-20 17:38:23,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:38:23,171 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) [2024-11-20 17:38:23,173 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 [2024-11-20 17:38:37,365 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-20 17:38:37,365 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:38:37,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 17:38:37,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:38:37,613 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 2 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:38:37,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:38:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 2 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:38:37,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:38:37,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112175265] [2024-11-20 17:38:37,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112175265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:38:37,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:38:37,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-20 17:38:37,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277204564] [2024-11-20 17:38:37,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:38:37,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-20 17:38:37,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:38:37,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-20 17:38:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2024-11-20 17:38:37,936 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 130 [2024-11-20 17:38:37,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 137 transitions, 690 flow. Second operand has 24 states, 24 states have (on average 75.45833333333333) internal successors, (1811), 24 states have internal predecessors, (1811), 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) [2024-11-20 17:38:37,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:38:37,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 130 [2024-11-20 17:38:37,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:38:40,280 INFO L124 PetriNetUnfolderBase]: 128/935 cut-off events. [2024-11-20 17:38:40,280 INFO L125 PetriNetUnfolderBase]: For 1728/1729 co-relation queries the response was YES. [2024-11-20 17:38:40,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2289 conditions, 935 events. 128/935 cut-off events. For 1728/1729 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3021 event pairs, 105 based on Foata normal form. 24/859 useless extension candidates. Maximal degree in co-relation 1526. Up to 269 conditions per place. [2024-11-20 17:38:40,287 INFO L140 encePairwiseOnDemand]: 126/130 looper letters, 155 selfloop transitions, 47 changer transitions 0/260 dead transitions. [2024-11-20 17:38:40,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 260 transitions, 2038 flow [2024-11-20 17:38:40,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-20 17:38:40,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-20 17:38:40,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1868 transitions. [2024-11-20 17:38:40,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5987179487179487 [2024-11-20 17:38:40,294 INFO L175 Difference]: Start difference. First operand has 155 places, 137 transitions, 690 flow. Second operand 24 states and 1868 transitions. [2024-11-20 17:38:40,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 260 transitions, 2038 flow [2024-11-20 17:38:40,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 260 transitions, 2026 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 17:38:40,305 INFO L231 Difference]: Finished difference. Result has 188 places, 162 transitions, 1222 flow [2024-11-20 17:38:40,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1222, PETRI_PLACES=188, PETRI_TRANSITIONS=162} [2024-11-20 17:38:40,307 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 74 predicate places. [2024-11-20 17:38:40,307 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 162 transitions, 1222 flow [2024-11-20 17:38:40,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 75.45833333333333) internal successors, (1811), 24 states have internal predecessors, (1811), 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) [2024-11-20 17:38:40,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:38:40,310 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 2, 1, 1, 1, 1, 1] [2024-11-20 17:38:40,357 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 [2024-11-20 17:38:40,510 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 [2024-11-20 17:38:40,510 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-11-20 17:38:40,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:38:40,511 INFO L85 PathProgramCache]: Analyzing trace with hash 845177117, now seen corresponding path program 4 times [2024-11-20 17:38:40,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:38:40,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210842238] [2024-11-20 17:38:40,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 17:38:40,512 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 [2024-11-20 17:38:40,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:38:40,513 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) [2024-11-20 17:38:40,515 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