./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:53:15,700 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:53:15,769 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:53:15,775 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:53:15,776 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:53:15,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:53:15,808 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:53:15,808 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:53:15,809 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:53:15,810 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:53:15,811 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:53:15,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:53:15,812 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:53:15,812 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:53:15,814 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:53:15,814 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:53:15,815 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:53:15,815 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:53:15,815 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:53:15,815 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:53:15,815 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:53:15,818 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:53:15,819 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:53:15,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:53:15,819 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:53:15,819 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:53:15,819 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:53:15,820 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:53:15,820 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:53:15,820 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:53:15,820 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:53:15,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:53:15,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:53:15,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:53:15,821 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:53:15,821 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:53:15,822 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:53:15,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:53:15,822 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:53:15,822 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:53:15,823 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:53:15,824 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:53:15,824 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2024-10-11 19:53:16,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:53:16,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:53:16,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:53:16,098 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:53:16,099 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:53:16,100 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-10-11 19:53:17,558 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:53:17,765 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:53:17,765 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-10-11 19:53:17,779 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3a10ea3e5/9e0e17e7cbce4214a777b4c3b95938c5/FLAG4c89214c4 [2024-10-11 19:53:17,796 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3a10ea3e5/9e0e17e7cbce4214a777b4c3b95938c5 [2024-10-11 19:53:17,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:53:17,800 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:53:17,803 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:53:17,803 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:53:17,808 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:53:17,809 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:53:17" (1/1) ... [2024-10-11 19:53:17,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b5897e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:17, skipping insertion in model container [2024-10-11 19:53:17,812 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:53:17" (1/1) ... [2024-10-11 19:53:17,839 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:53:18,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:53:18,101 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 19:53:18,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7bdc1552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:18, skipping insertion in model container [2024-10-11 19:53:18,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:53:18,103 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:53:18,105 INFO L158 Benchmark]: Toolchain (without parser) took 303.54ms. Allocated memory is still 132.1MB. Free memory was 61.5MB in the beginning and 49.7MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:53:18,105 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 132.1MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:53:18,106 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.75ms. Allocated memory is still 132.1MB. Free memory was 61.2MB in the beginning and 49.7MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:53:18,107 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 132.1MB. Free memory is still 90.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.75ms. Allocated memory is still 132.1MB. Free memory was 61.2MB in the beginning and 49.7MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 137]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:53:20,168 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:53:20,259 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:53:20,267 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:53:20,268 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:53:20,300 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:53:20,301 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:53:20,302 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:53:20,303 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:53:20,304 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:53:20,305 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:53:20,305 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:53:20,306 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:53:20,306 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:53:20,306 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:53:20,309 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:53:20,309 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:53:20,310 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:53:20,310 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:53:20,310 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:53:20,311 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:53:20,312 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:53:20,313 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:53:20,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:53:20,313 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:53:20,313 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:53:20,314 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:53:20,314 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:53:20,314 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:53:20,315 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:53:20,315 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:53:20,315 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:53:20,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:53:20,317 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:53:20,317 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:53:20,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:53:20,318 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:53:20,318 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:53:20,319 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:53:20,319 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:53:20,319 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:53:20,320 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:53:20,320 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:53:20,320 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:53:20,321 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:53:20,321 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2024-10-11 19:53:20,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:53:20,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:53:20,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:53:20,691 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:53:20,691 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:53:20,694 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-10-11 19:53:22,220 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:53:22,409 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:53:22,410 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2024-10-11 19:53:22,420 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/612ba9bf6/a5f0f4b3533c48e2abe30e851ce9e749/FLAG68a24ca88 [2024-10-11 19:53:22,433 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/612ba9bf6/a5f0f4b3533c48e2abe30e851ce9e749 [2024-10-11 19:53:22,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:53:22,436 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:53:22,439 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:53:22,440 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:53:22,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:53:22,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:53:22" (1/1) ... [2024-10-11 19:53:22,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f53116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:22, skipping insertion in model container [2024-10-11 19:53:22,448 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:53:22" (1/1) ... [2024-10-11 19:53:22,473 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:53:22,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:53:22,757 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:53:22,762 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:53:22,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:53:22,785 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:53:22,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:53:22,849 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:53:22,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:22 WrapperNode [2024-10-11 19:53:22,850 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:53:22,851 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:53:22,851 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:53:22,851 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:53:22,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:22" (1/1) ... [2024-10-11 19:53:22,870 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:22" (1/1) ... [2024-10-11 19:53:22,899 INFO L138 Inliner]: procedures = 26, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 158 [2024-10-11 19:53:22,903 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:53:22,904 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:53:22,904 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:53:22,904 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:53:22,915 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:22" (1/1) ... [2024-10-11 19:53:22,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:22" (1/1) ... [2024-10-11 19:53:22,927 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:22" (1/1) ... [2024-10-11 19:53:22,960 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-11 19:53:22,961 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:22" (1/1) ... [2024-10-11 19:53:22,961 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:22" (1/1) ... [2024-10-11 19:53:22,977 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:22" (1/1) ... [2024-10-11 19:53:22,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:22" (1/1) ... [2024-10-11 19:53:22,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:22" (1/1) ... [2024-10-11 19:53:22,994 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:22" (1/1) ... [2024-10-11 19:53:23,000 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:53:23,001 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:53:23,001 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:53:23,002 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:53:23,002 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:22" (1/1) ... [2024-10-11 19:53:23,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:53:23,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:53:23,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:53:23,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:53:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:53:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:53:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:53:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:53:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:53:23,094 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:53:23,094 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:53:23,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:53:23,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:53:23,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 19:53:23,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 19:53:23,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:53:23,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:53:23,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:53:23,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:53:23,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:53:23,098 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:53:23,236 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:53:23,238 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:53:24,005 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:53:24,006 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:53:24,341 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:53:24,341 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-11 19:53:24,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:53:24 BoogieIcfgContainer [2024-10-11 19:53:24,342 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:53:24,346 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:53:24,346 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:53:24,350 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:53:24,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:53:22" (1/3) ... [2024-10-11 19:53:24,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b460699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:53:24, skipping insertion in model container [2024-10-11 19:53:24,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:53:22" (2/3) ... [2024-10-11 19:53:24,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b460699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:53:24, skipping insertion in model container [2024-10-11 19:53:24,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:53:24" (3/3) ... [2024-10-11 19:53:24,354 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2024-10-11 19:53:24,372 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:53:24,372 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-11 19:53:24,373 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:53:24,481 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 19:53:24,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 96 transitions, 213 flow [2024-10-11 19:53:24,566 INFO L124 PetriNetUnfolderBase]: 12/93 cut-off events. [2024-10-11 19:53:24,567 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 19:53:24,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 93 events. 12/93 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 302 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2024-10-11 19:53:24,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 96 transitions, 213 flow [2024-10-11 19:53:24,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 92 transitions, 202 flow [2024-10-11 19:53:24,585 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:53:24,592 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;@57445a37, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:53:24,592 INFO L334 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2024-10-11 19:53:24,595 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:53:24,595 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:53:24,595 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:53:24,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:24,595 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:53:24,596 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:24,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:24,603 INFO L85 PathProgramCache]: Analyzing trace with hash 754304, now seen corresponding path program 1 times [2024-10-11 19:53:24,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:24,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163828200] [2024-10-11 19:53:24,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:24,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:24,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:24,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:53:24,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 19:53:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:24,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:53:24,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:24,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:53:24,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:24,816 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:53:24,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:24,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163828200] [2024-10-11 19:53:24,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163828200] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:24,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:24,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:53:24,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579008733] [2024-10-11 19:53:24,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:24,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:53:24,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:24,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:53:24,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:53:24,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-10-11 19:53:24,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 92 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:24,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:24,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-10-11 19:53:24,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:25,739 INFO L124 PetriNetUnfolderBase]: 2712/4959 cut-off events. [2024-10-11 19:53:25,741 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2024-10-11 19:53:25,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8710 conditions, 4959 events. 2712/4959 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 34705 event pairs, 1692 based on Foata normal form. 1/3394 useless extension candidates. Maximal degree in co-relation 8234. Up to 3567 conditions per place. [2024-10-11 19:53:25,790 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 45 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2024-10-11 19:53:25,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 87 transitions, 286 flow [2024-10-11 19:53:25,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:53:25,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:53:25,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2024-10-11 19:53:25,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-10-11 19:53:25,824 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 202 flow. Second operand 3 states and 183 transitions. [2024-10-11 19:53:25,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 87 transitions, 286 flow [2024-10-11 19:53:25,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 274 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 19:53:25,832 INFO L231 Difference]: Finished difference. Result has 81 places, 87 transitions, 184 flow [2024-10-11 19:53:25,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=81, PETRI_TRANSITIONS=87} [2024-10-11 19:53:25,836 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, -9 predicate places. [2024-10-11 19:53:25,837 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 87 transitions, 184 flow [2024-10-11 19:53:25,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:25,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:25,837 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:53:25,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-11 19:53:26,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:26,040 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:26,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:26,041 INFO L85 PathProgramCache]: Analyzing trace with hash 754305, now seen corresponding path program 1 times [2024-10-11 19:53:26,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:26,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199570320] [2024-10-11 19:53:26,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:26,042 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:26,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:26,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:53:26,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 19:53:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:26,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:53:26,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:26,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:53:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:26,219 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:53:26,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:26,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199570320] [2024-10-11 19:53:26,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199570320] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:26,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:26,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:53:26,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295047797] [2024-10-11 19:53:26,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:26,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:53:26,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:26,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:53:26,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:53:26,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-10-11 19:53:26,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 87 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:26,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:26,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-10-11 19:53:26,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:27,286 INFO L124 PetriNetUnfolderBase]: 2715/4968 cut-off events. [2024-10-11 19:53:27,287 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-10-11 19:53:27,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8618 conditions, 4968 events. 2715/4968 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 34774 event pairs, 1692 based on Foata normal form. 0/3398 useless extension candidates. Maximal degree in co-relation 8568. Up to 3580 conditions per place. [2024-10-11 19:53:27,328 INFO L140 encePairwiseOnDemand]: 83/96 looper letters, 49 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-10-11 19:53:27,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 96 transitions, 322 flow [2024-10-11 19:53:27,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:53:27,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:53:27,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2024-10-11 19:53:27,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-10-11 19:53:27,332 INFO L175 Difference]: Start difference. First operand has 81 places, 87 transitions, 184 flow. Second operand 4 states and 238 transitions. [2024-10-11 19:53:27,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 96 transitions, 322 flow [2024-10-11 19:53:27,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 96 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:53:27,338 INFO L231 Difference]: Finished difference. Result has 85 places, 96 transitions, 262 flow [2024-10-11 19:53:27,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=85, PETRI_TRANSITIONS=96} [2024-10-11 19:53:27,339 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, -5 predicate places. [2024-10-11 19:53:27,339 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 96 transitions, 262 flow [2024-10-11 19:53:27,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:27,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:27,342 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:53:27,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:27,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:27,544 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:27,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:27,544 INFO L85 PathProgramCache]: Analyzing trace with hash 724911050, now seen corresponding path program 1 times [2024-10-11 19:53:27,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:27,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921470640] [2024-10-11 19:53:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:27,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:27,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:27,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:53:27,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-11 19:53:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:27,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:53:27,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:27,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:53:27,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:27,798 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:28,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:28,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921470640] [2024-10-11 19:53:28,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921470640] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:28,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:53:28,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:53:28,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959925046] [2024-10-11 19:53:28,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:28,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:53:28,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:28,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:53:28,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:53:29,101 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-10-11 19:53:29,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 262 flow. Second operand has 10 states, 10 states have (on average 45.0) internal successors, (450), 10 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:29,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:29,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-10-11 19:53:29,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:30,798 INFO L124 PetriNetUnfolderBase]: 2724/4995 cut-off events. [2024-10-11 19:53:30,799 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-10-11 19:53:30,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8736 conditions, 4995 events. 2724/4995 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 34985 event pairs, 1692 based on Foata normal form. 0/3425 useless extension candidates. Maximal degree in co-relation 8582. Up to 3583 conditions per place. [2024-10-11 19:53:30,835 INFO L140 encePairwiseOnDemand]: 83/96 looper letters, 49 selfloop transitions, 37 changer transitions 0/123 dead transitions. [2024-10-11 19:53:30,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 123 transitions, 554 flow [2024-10-11 19:53:30,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:53:30,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:53:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 535 transitions. [2024-10-11 19:53:30,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5572916666666666 [2024-10-11 19:53:30,843 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 262 flow. Second operand 10 states and 535 transitions. [2024-10-11 19:53:30,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 123 transitions, 554 flow [2024-10-11 19:53:30,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 554 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:53:30,847 INFO L231 Difference]: Finished difference. Result has 97 places, 123 transitions, 506 flow [2024-10-11 19:53:30,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=506, PETRI_PLACES=97, PETRI_TRANSITIONS=123} [2024-10-11 19:53:30,847 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 7 predicate places. [2024-10-11 19:53:30,848 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 123 transitions, 506 flow [2024-10-11 19:53:30,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 45.0) internal successors, (450), 10 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:30,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:30,848 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:30,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-11 19:53:31,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:31,049 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:31,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:31,050 INFO L85 PathProgramCache]: Analyzing trace with hash -563258048, now seen corresponding path program 1 times [2024-10-11 19:53:31,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:31,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096199686] [2024-10-11 19:53:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:31,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:31,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:31,054 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:53:31,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 19:53:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:31,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:53:31,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:31,192 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:53:31,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:31,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096199686] [2024-10-11 19:53:31,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096199686] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:31,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:31,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:53:31,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129493954] [2024-10-11 19:53:31,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:31,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:53:31,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:31,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:53:31,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:53:31,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 96 [2024-10-11 19:53:31,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 123 transitions, 506 flow. Second operand has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:31,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:31,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 96 [2024-10-11 19:53:31,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:32,271 INFO L124 PetriNetUnfolderBase]: 5214/9355 cut-off events. [2024-10-11 19:53:32,271 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-10-11 19:53:32,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16665 conditions, 9355 events. 5214/9355 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 70163 event pairs, 2894 based on Foata normal form. 0/6485 useless extension candidates. Maximal degree in co-relation 16523. Up to 4058 conditions per place. [2024-10-11 19:53:32,324 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 166 selfloop transitions, 5 changer transitions 0/210 dead transitions. [2024-10-11 19:53:32,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 210 transitions, 1178 flow [2024-10-11 19:53:32,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:53:32,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:53:32,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 345 transitions. [2024-10-11 19:53:32,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-10-11 19:53:32,326 INFO L175 Difference]: Start difference. First operand has 97 places, 123 transitions, 506 flow. Second operand 5 states and 345 transitions. [2024-10-11 19:53:32,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 210 transitions, 1178 flow [2024-10-11 19:53:32,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 210 transitions, 1022 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-10-11 19:53:32,333 INFO L231 Difference]: Finished difference. Result has 99 places, 125 transitions, 436 flow [2024-10-11 19:53:32,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=436, PETRI_PLACES=99, PETRI_TRANSITIONS=125} [2024-10-11 19:53:32,334 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2024-10-11 19:53:32,334 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 125 transitions, 436 flow [2024-10-11 19:53:32,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:32,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:32,335 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:32,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-11 19:53:32,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:32,538 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:32,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:32,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1437805132, now seen corresponding path program 1 times [2024-10-11 19:53:32,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:32,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060009075] [2024-10-11 19:53:32,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:32,540 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:32,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:32,543 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:53:32,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 19:53:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:32,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:53:32,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:32,682 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:53:32,682 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:32,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060009075] [2024-10-11 19:53:32,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060009075] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:32,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:32,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:53:32,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569023615] [2024-10-11 19:53:32,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:32,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:53:32,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:32,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:53:32,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:53:32,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 96 [2024-10-11 19:53:32,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 125 transitions, 436 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:32,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:32,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 96 [2024-10-11 19:53:32,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:34,333 INFO L124 PetriNetUnfolderBase]: 9298/16896 cut-off events. [2024-10-11 19:53:34,334 INFO L125 PetriNetUnfolderBase]: For 1994/1994 co-relation queries the response was YES. [2024-10-11 19:53:34,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31251 conditions, 16896 events. 9298/16896 cut-off events. For 1994/1994 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 140724 event pairs, 5328 based on Foata normal form. 0/12227 useless extension candidates. Maximal degree in co-relation 31084. Up to 7366 conditions per place. [2024-10-11 19:53:34,445 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 152 selfloop transitions, 9 changer transitions 0/200 dead transitions. [2024-10-11 19:53:34,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 200 transitions, 982 flow [2024-10-11 19:53:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:53:34,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:53:34,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 341 transitions. [2024-10-11 19:53:34,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7104166666666667 [2024-10-11 19:53:34,449 INFO L175 Difference]: Start difference. First operand has 99 places, 125 transitions, 436 flow. Second operand 5 states and 341 transitions. [2024-10-11 19:53:34,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 200 transitions, 982 flow [2024-10-11 19:53:34,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 200 transitions, 978 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 19:53:34,459 INFO L231 Difference]: Finished difference. Result has 104 places, 127 transitions, 465 flow [2024-10-11 19:53:34,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=465, PETRI_PLACES=104, PETRI_TRANSITIONS=127} [2024-10-11 19:53:34,462 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 14 predicate places. [2024-10-11 19:53:34,462 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 127 transitions, 465 flow [2024-10-11 19:53:34,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:34,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:34,463 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:34,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-11 19:53:34,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:34,664 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:34,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:34,665 INFO L85 PathProgramCache]: Analyzing trace with hash -282508343, now seen corresponding path program 1 times [2024-10-11 19:53:34,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:34,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001041564] [2024-10-11 19:53:34,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:34,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:34,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:34,670 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:53:34,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 19:53:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:34,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:53:34,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:53:34,813 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:53:34,814 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:34,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001041564] [2024-10-11 19:53:34,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001041564] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:34,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:34,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:53:34,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318699092] [2024-10-11 19:53:34,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:34,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:53:34,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:34,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:53:34,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:53:34,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 96 [2024-10-11 19:53:34,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 127 transitions, 465 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:34,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:34,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 96 [2024-10-11 19:53:34,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:36,478 INFO L124 PetriNetUnfolderBase]: 8554/15608 cut-off events. [2024-10-11 19:53:36,478 INFO L125 PetriNetUnfolderBase]: For 3289/3289 co-relation queries the response was YES. [2024-10-11 19:53:36,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30340 conditions, 15608 events. 8554/15608 cut-off events. For 3289/3289 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 129077 event pairs, 5008 based on Foata normal form. 98/12053 useless extension candidates. Maximal degree in co-relation 30170. Up to 6970 conditions per place. [2024-10-11 19:53:36,561 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 143 selfloop transitions, 11 changer transitions 0/193 dead transitions. [2024-10-11 19:53:36,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 193 transitions, 975 flow [2024-10-11 19:53:36,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:53:36,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:53:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 336 transitions. [2024-10-11 19:53:36,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-10-11 19:53:36,564 INFO L175 Difference]: Start difference. First operand has 104 places, 127 transitions, 465 flow. Second operand 5 states and 336 transitions. [2024-10-11 19:53:36,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 193 transitions, 975 flow [2024-10-11 19:53:36,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 193 transitions, 967 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 19:53:36,575 INFO L231 Difference]: Finished difference. Result has 109 places, 131 transitions, 518 flow [2024-10-11 19:53:36,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=518, PETRI_PLACES=109, PETRI_TRANSITIONS=131} [2024-10-11 19:53:36,578 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 19 predicate places. [2024-10-11 19:53:36,579 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 131 transitions, 518 flow [2024-10-11 19:53:36,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:36,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:36,580 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 19:53:36,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-11 19:53:36,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:36,783 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:36,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:36,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1444262437, now seen corresponding path program 2 times [2024-10-11 19:53:36,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:36,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118704128] [2024-10-11 19:53:36,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:53:36,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:36,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:36,788 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:53:36,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 19:53:36,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:53:36,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:53:36,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:53:36,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:36,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:53:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:37,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:37,684 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:53:37,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:37,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118704128] [2024-10-11 19:53:37,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118704128] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:37,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:53:37,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:53:37,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054837857] [2024-10-11 19:53:37,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:37,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:53:37,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:37,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:53:37,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:53:40,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2024-10-11 19:53:40,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 131 transitions, 518 flow. Second operand has 14 states, 14 states have (on average 45.57142857142857) internal successors, (638), 14 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:40,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:40,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2024-10-11 19:53:40,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:44,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:53:45,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:53:48,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:53:55,815 INFO L124 PetriNetUnfolderBase]: 8261/16466 cut-off events. [2024-10-11 19:53:55,815 INFO L125 PetriNetUnfolderBase]: For 6966/6966 co-relation queries the response was YES. [2024-10-11 19:53:55,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32357 conditions, 16466 events. 8261/16466 cut-off events. For 6966/6966 co-relation queries the response was YES. Maximal size of possible extension queue 980. Compared 150590 event pairs, 5595 based on Foata normal form. 42/12076 useless extension candidates. Maximal degree in co-relation 31727. Up to 11136 conditions per place. [2024-10-11 19:53:55,891 INFO L140 encePairwiseOnDemand]: 83/96 looper letters, 57 selfloop transitions, 91 changer transitions 0/185 dead transitions. [2024-10-11 19:53:55,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 185 transitions, 1096 flow [2024-10-11 19:53:55,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:53:55,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:53:55,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1126 transitions. [2024-10-11 19:53:55,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5331439393939394 [2024-10-11 19:53:55,897 INFO L175 Difference]: Start difference. First operand has 109 places, 131 transitions, 518 flow. Second operand 22 states and 1126 transitions. [2024-10-11 19:53:55,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 185 transitions, 1096 flow [2024-10-11 19:53:55,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 185 transitions, 1046 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:53:55,926 INFO L231 Difference]: Finished difference. Result has 133 places, 185 transitions, 1018 flow [2024-10-11 19:53:55,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1018, PETRI_PLACES=133, PETRI_TRANSITIONS=185} [2024-10-11 19:53:55,927 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 43 predicate places. [2024-10-11 19:53:55,927 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 185 transitions, 1018 flow [2024-10-11 19:53:55,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 45.57142857142857) internal successors, (638), 14 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:55,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:55,928 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:55,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:56,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:56,129 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:56,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:56,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1282179683, now seen corresponding path program 1 times [2024-10-11 19:53:56,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:56,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210784595] [2024-10-11 19:53:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:56,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:56,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:56,133 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:53:56,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 19:53:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:56,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:53:56,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:56,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:53:56,274 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 19:53:56,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-11 19:53:56,312 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-11 19:53:56,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-11 19:53:56,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:53:56,335 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:53:56,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:56,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210784595] [2024-10-11 19:53:56,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210784595] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:56,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:56,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:53:56,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166927171] [2024-10-11 19:53:56,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:56,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:53:56,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:56,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:53:56,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:53:56,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 96 [2024-10-11 19:53:56,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 185 transitions, 1018 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:56,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:56,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 96 [2024-10-11 19:53:56,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:57,987 INFO L124 PetriNetUnfolderBase]: 10997/19078 cut-off events. [2024-10-11 19:53:57,987 INFO L125 PetriNetUnfolderBase]: For 8830/8830 co-relation queries the response was YES. [2024-10-11 19:53:58,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40053 conditions, 19078 events. 10997/19078 cut-off events. For 8830/8830 co-relation queries the response was YES. Maximal size of possible extension queue 891. Compared 150209 event pairs, 7747 based on Foata normal form. 0/15845 useless extension candidates. Maximal degree in co-relation 39794. Up to 14839 conditions per place. [2024-10-11 19:53:58,108 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 126 selfloop transitions, 23 changer transitions 0/181 dead transitions. [2024-10-11 19:53:58,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 181 transitions, 1308 flow [2024-10-11 19:53:58,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:53:58,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:53:58,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 235 transitions. [2024-10-11 19:53:58,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-10-11 19:53:58,110 INFO L175 Difference]: Start difference. First operand has 133 places, 185 transitions, 1018 flow. Second operand 5 states and 235 transitions. [2024-10-11 19:53:58,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 181 transitions, 1308 flow [2024-10-11 19:53:58,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 181 transitions, 1076 flow, removed 67 selfloop flow, removed 9 redundant places. [2024-10-11 19:53:58,133 INFO L231 Difference]: Finished difference. Result has 124 places, 181 transitions, 824 flow [2024-10-11 19:53:58,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=824, PETRI_PLACES=124, PETRI_TRANSITIONS=181} [2024-10-11 19:53:58,134 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 34 predicate places. [2024-10-11 19:53:58,134 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 181 transitions, 824 flow [2024-10-11 19:53:58,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:58,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:58,135 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:58,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:58,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:58,336 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:53:58,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:58,336 INFO L85 PathProgramCache]: Analyzing trace with hash -494348088, now seen corresponding path program 1 times [2024-10-11 19:53:58,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:58,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786212908] [2024-10-11 19:53:58,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:58,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:58,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:58,338 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:53:58,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-11 19:53:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:58,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:53:58,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:58,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:53:58,478 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:53:58,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:58,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786212908] [2024-10-11 19:53:58,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786212908] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:58,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:58,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:53:58,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295634798] [2024-10-11 19:53:58,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:58,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:53:58,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:58,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:53:58,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:53:58,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 96 [2024-10-11 19:53:58,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 181 transitions, 824 flow. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:58,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:58,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 96 [2024-10-11 19:53:58,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:00,661 INFO L124 PetriNetUnfolderBase]: 16000/29217 cut-off events. [2024-10-11 19:54:00,661 INFO L125 PetriNetUnfolderBase]: For 13300/13300 co-relation queries the response was YES. [2024-10-11 19:54:00,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59870 conditions, 29217 events. 16000/29217 cut-off events. For 13300/13300 co-relation queries the response was YES. Maximal size of possible extension queue 1419. Compared 261519 event pairs, 9364 based on Foata normal form. 222/23213 useless extension candidates. Maximal degree in co-relation 59648. Up to 12111 conditions per place. [2024-10-11 19:54:00,800 INFO L140 encePairwiseOnDemand]: 90/96 looper letters, 199 selfloop transitions, 17 changer transitions 0/251 dead transitions. [2024-10-11 19:54:00,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 251 transitions, 1512 flow [2024-10-11 19:54:00,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:54:00,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:54:00,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2024-10-11 19:54:00,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7041666666666667 [2024-10-11 19:54:00,802 INFO L175 Difference]: Start difference. First operand has 124 places, 181 transitions, 824 flow. Second operand 5 states and 338 transitions. [2024-10-11 19:54:00,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 251 transitions, 1512 flow [2024-10-11 19:54:00,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 251 transitions, 1477 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:54:00,837 INFO L231 Difference]: Finished difference. Result has 127 places, 185 transitions, 862 flow [2024-10-11 19:54:00,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=862, PETRI_PLACES=127, PETRI_TRANSITIONS=185} [2024-10-11 19:54:00,838 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 37 predicate places. [2024-10-11 19:54:00,838 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 185 transitions, 862 flow [2024-10-11 19:54:00,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:00,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:00,838 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:00,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-10-11 19:54:01,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:01,039 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-10-11 19:54:01,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:01,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1282179682, now seen corresponding path program 1 times [2024-10-11 19:54:01,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:01,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401393528] [2024-10-11 19:54:01,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:01,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:01,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:01,043 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:54:01,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-11 19:54:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:01,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 19:54:01,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:01,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:54:01,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:54:01,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:54:01,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:54:01,310 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-11 19:54:01,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-11 19:54:01,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:54:01,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:54:01,419 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:54:01,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:54:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:01,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:02,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:02,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401393528] [2024-10-11 19:54:02,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401393528] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:02,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:54:02,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:54:02,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020752459] [2024-10-11 19:54:02,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:02,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:54:02,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:02,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:54:02,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:54:06,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:54:13,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:54:18,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:54:22,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:54:26,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:54:26,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 96 [2024-10-11 19:54:26,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 185 transitions, 862 flow. Second operand has 14 states, 14 states have (on average 20.714285714285715) internal successors, (290), 14 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:26,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:26,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 96 [2024-10-11 19:54:26,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand