./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/popl20-more-min-array.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/popl20-more-min-array.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 2261d9b3f7623cbd5155b35c39657066d179b87a48a9848bd1f196c713477a75 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:59:18,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:59:18,357 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:59:18,361 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:59:18,362 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:59:18,388 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:59:18,389 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:59:18,389 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:59:18,389 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:59:18,390 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:59:18,390 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:59:18,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:59:18,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:59:18,391 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:59:18,393 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:59:18,393 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:59:18,394 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:59:18,394 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:59:18,394 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:59:18,394 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:59:18,394 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:59:18,397 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:59:18,398 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:59:18,398 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:59:18,399 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:59:18,399 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:59:18,399 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:59:18,399 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:59:18,399 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:59:18,399 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:59:18,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:59:18,400 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:59:18,400 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:59:18,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:59:18,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:59:18,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:59:18,401 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:59:18,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:59:18,402 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:59:18,402 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:59:18,402 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:59:18,404 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:59:18,404 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2261d9b3f7623cbd5155b35c39657066d179b87a48a9848bd1f196c713477a75 [2024-10-11 19:59:18,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:59:18,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:59:18,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:59:18,613 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:59:18,613 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:59:18,614 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2024-10-11 19:59:19,966 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:59:20,133 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:59:20,133 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2024-10-11 19:59:20,141 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ce51759bd/d4f9c05733224db68ecea0087d4b7c8b/FLAG92c01e4ca [2024-10-11 19:59:20,152 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ce51759bd/d4f9c05733224db68ecea0087d4b7c8b [2024-10-11 19:59:20,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:59:20,156 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:59:20,157 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:20,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:59:20,165 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:59:20,166 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:20" (1/1) ... [2024-10-11 19:59:20,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a39e43e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:20, skipping insertion in model container [2024-10-11 19:59:20,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:20" (1/1) ... [2024-10-11 19:59:20,194 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:59:20,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:20,373 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 19:59:20,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78bc974d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:20, skipping insertion in model container [2024-10-11 19:59:20,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:20,374 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:59:20,375 INFO L158 Benchmark]: Toolchain (without parser) took 219.06ms. Allocated memory is still 148.9MB. Free memory was 77.1MB in the beginning and 65.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 19:59:20,376 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 148.9MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:59:20,376 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.20ms. Allocated memory is still 148.9MB. Free memory was 76.8MB in the beginning and 65.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:59:20,377 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 148.9MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.20ms. Allocated memory is still 148.9MB. Free memory was 76.8MB in the beginning and 65.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 109]: 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/popl20-more-min-array.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 2261d9b3f7623cbd5155b35c39657066d179b87a48a9848bd1f196c713477a75 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:59:22,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:59:22,314 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:59:22,319 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:59:22,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:59:22,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:59:22,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:59:22,340 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:59:22,341 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:59:22,341 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:59:22,341 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:59:22,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:59:22,342 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:59:22,342 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:59:22,343 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:59:22,343 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:59:22,343 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:59:22,343 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:59:22,343 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:59:22,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:59:22,344 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:59:22,347 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:59:22,347 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:59:22,347 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:59:22,347 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:59:22,347 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:59:22,347 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:59:22,347 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:59:22,348 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:59:22,348 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:59:22,348 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:59:22,348 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:59:22,348 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:59:22,348 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:59:22,349 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:59:22,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:59:22,349 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:59:22,349 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:59:22,349 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:59:22,349 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:59:22,350 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:59:22,350 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:59:22,351 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:59:22,351 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:59:22,351 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:59:22,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2261d9b3f7623cbd5155b35c39657066d179b87a48a9848bd1f196c713477a75 [2024-10-11 19:59:22,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:59:22,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:59:22,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:59:22,681 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:59:22,681 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:59:22,683 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2024-10-11 19:59:24,160 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:59:24,338 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:59:24,339 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2024-10-11 19:59:24,346 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b10d6df84/8164a83ba78e42acba7f09c806e6beee/FLAG896ef7beb [2024-10-11 19:59:24,360 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b10d6df84/8164a83ba78e42acba7f09c806e6beee [2024-10-11 19:59:24,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:59:24,364 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:59:24,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:24,366 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:59:24,371 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:59:24,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:24" (1/1) ... [2024-10-11 19:59:24,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@341f0b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:24, skipping insertion in model container [2024-10-11 19:59:24,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:59:24" (1/1) ... [2024-10-11 19:59:24,393 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:59:24,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:24,587 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:59:24,592 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:59:24,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:24,620 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:59:24,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:59:24,663 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:59:24,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:24 WrapperNode [2024-10-11 19:59:24,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:59:24,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:59:24,665 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:59:24,665 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:59:24,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:24" (1/1) ... [2024-10-11 19:59:24,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:24" (1/1) ... [2024-10-11 19:59:24,706 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 85 [2024-10-11 19:59:24,706 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:59:24,707 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:59:24,707 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:59:24,707 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:59:24,717 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:24" (1/1) ... [2024-10-11 19:59:24,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:24" (1/1) ... [2024-10-11 19:59:24,722 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:24" (1/1) ... [2024-10-11 19:59:24,750 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-11 19:59:24,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:24" (1/1) ... [2024-10-11 19:59:24,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:24" (1/1) ... [2024-10-11 19:59:24,761 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:24" (1/1) ... [2024-10-11 19:59:24,764 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:24" (1/1) ... [2024-10-11 19:59:24,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:24" (1/1) ... [2024-10-11 19:59:24,771 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:24" (1/1) ... [2024-10-11 19:59:24,776 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:59:24,777 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:59:24,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:59:24,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:59:24,782 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:24" (1/1) ... [2024-10-11 19:59:24,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:59:24,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:59:24,821 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 19:59:24,842 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 19:59:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:59:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:59:24,909 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:59:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:59:24,909 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:59:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 19:59:24,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 19:59:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:59:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:59:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:59:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:59:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:59:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:59:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:59:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:59:24,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:59:24,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:59:24,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:59:24,923 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 19:59:25,013 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:59:25,015 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:59:25,317 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:59:25,317 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:59:25,573 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:59:25,573 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 19:59:25,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:59:25 BoogieIcfgContainer [2024-10-11 19:59:25,575 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:59:25,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:59:25,577 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:59:25,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:59:25,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:59:24" (1/3) ... [2024-10-11 19:59:25,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53253e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:59:25, skipping insertion in model container [2024-10-11 19:59:25,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:59:24" (2/3) ... [2024-10-11 19:59:25,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53253e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:59:25, skipping insertion in model container [2024-10-11 19:59:25,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:59:25" (3/3) ... [2024-10-11 19:59:25,583 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2024-10-11 19:59:25,597 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:59:25,597 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-11 19:59:25,597 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:59:25,650 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 19:59:25,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 50 transitions, 121 flow [2024-10-11 19:59:25,706 INFO L124 PetriNetUnfolderBase]: 4/47 cut-off events. [2024-10-11 19:59:25,706 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 19:59:25,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 4/47 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 106 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-10-11 19:59:25,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 50 transitions, 121 flow [2024-10-11 19:59:25,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 46 transitions, 110 flow [2024-10-11 19:59:25,734 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:59:25,741 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;@58d09462, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:59:25,742 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-10-11 19:59:25,746 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:59:25,747 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:59:25,747 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:59:25,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:25,748 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:59:25,748 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-11 19:59:25,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:25,752 INFO L85 PathProgramCache]: Analyzing trace with hash 486979, now seen corresponding path program 1 times [2024-10-11 19:59:25,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:25,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299205018] [2024-10-11 19:59:25,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:25,763 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 19:59:25,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:25,765 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 19:59:25,766 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 19:59:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:25,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:59:25,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:25,869 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 19:59:25,882 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 19:59:25,882 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:25,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:25,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299205018] [2024-10-11 19:59:25,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299205018] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:25,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:25,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:59:25,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269008785] [2024-10-11 19:59:25,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:25,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:59:25,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:25,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:59:25,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:59:25,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-11 19:59:25,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 19:59:25,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:25,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-11 19:59:25,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:26,273 INFO L124 PetriNetUnfolderBase]: 1316/1930 cut-off events. [2024-10-11 19:59:26,274 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2024-10-11 19:59:26,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3943 conditions, 1930 events. 1316/1930 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9804 event pairs, 1060 based on Foata normal form. 1/1377 useless extension candidates. Maximal degree in co-relation 3637. Up to 1877 conditions per place. [2024-10-11 19:59:26,291 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 30 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-10-11 19:59:26,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 156 flow [2024-10-11 19:59:26,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:59:26,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:59:26,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-10-11 19:59:26,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44666666666666666 [2024-10-11 19:59:26,303 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 110 flow. Second operand 3 states and 67 transitions. [2024-10-11 19:59:26,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 156 flow [2024-10-11 19:59:26,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 144 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 19:59:26,311 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 84 flow [2024-10-11 19:59:26,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-10-11 19:59:26,317 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -13 predicate places. [2024-10-11 19:59:26,318 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 84 flow [2024-10-11 19:59:26,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 19:59:26,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:26,318 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:59:26,322 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 (2)] Forceful destruction successful, exit code 0 [2024-10-11 19:59:26,520 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 19:59:26,521 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-11 19:59:26,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:26,522 INFO L85 PathProgramCache]: Analyzing trace with hash 486980, now seen corresponding path program 1 times [2024-10-11 19:59:26,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:26,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826124658] [2024-10-11 19:59:26,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:26,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:59:26,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:26,526 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 19:59:26,527 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 19:59:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:26,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:59:26,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:26,626 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 19:59:26,702 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 19:59:26,702 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:26,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:26,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826124658] [2024-10-11 19:59:26,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826124658] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:26,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:26,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:59:26,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662293963] [2024-10-11 19:59:26,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:26,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:59:26,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:26,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:59:26,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:59:26,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-11 19:59:26,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 19:59:26,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:26,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-11 19:59:26,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:27,101 INFO L124 PetriNetUnfolderBase]: 1317/1933 cut-off events. [2024-10-11 19:59:27,101 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 19:59:27,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3865 conditions, 1933 events. 1317/1933 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9835 event pairs, 1060 based on Foata normal form. 0/1379 useless extension candidates. Maximal degree in co-relation 3843. Up to 1882 conditions per place. [2024-10-11 19:59:27,109 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 32 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2024-10-11 19:59:27,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 164 flow [2024-10-11 19:59:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:59:27,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:59:27,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-10-11 19:59:27,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.365 [2024-10-11 19:59:27,111 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 84 flow. Second operand 4 states and 73 transitions. [2024-10-11 19:59:27,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 164 flow [2024-10-11 19:59:27,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:27,117 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 107 flow [2024-10-11 19:59:27,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2024-10-11 19:59:27,118 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -10 predicate places. [2024-10-11 19:59:27,118 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 107 flow [2024-10-11 19:59:27,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 19:59:27,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:27,119 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:59:27,124 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 (3)] Ended with exit code 0 [2024-10-11 19:59:27,319 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 19:59:27,320 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-11 19:59:27,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:27,320 INFO L85 PathProgramCache]: Analyzing trace with hash 468002909, now seen corresponding path program 1 times [2024-10-11 19:59:27,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:27,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765286890] [2024-10-11 19:59:27,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:27,321 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 19:59:27,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:27,324 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 19:59:27,325 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 19:59:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:27,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:59:27,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:27,402 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 19:59:27,502 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 19:59:27,503 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:27,698 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 19:59:27,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:27,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765286890] [2024-10-11 19:59:27,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765286890] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:27,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:27,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:59:27,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890203810] [2024-10-11 19:59:27,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:27,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:59:27,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:27,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:59:27,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:59:27,742 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-11 19:59:27,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 107 flow. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 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 19:59:27,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:27,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-11 19:59:27,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:28,241 INFO L124 PetriNetUnfolderBase]: 1320/1942 cut-off events. [2024-10-11 19:59:28,241 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 19:59:28,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3902 conditions, 1942 events. 1320/1942 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9874 event pairs, 1060 based on Foata normal form. 0/1384 useless extension candidates. Maximal degree in co-relation 3850. Up to 1885 conditions per place. [2024-10-11 19:59:28,252 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 32 selfloop transitions, 13 changer transitions 0/49 dead transitions. [2024-10-11 19:59:28,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 233 flow [2024-10-11 19:59:28,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:59:28,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:59:28,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-10-11 19:59:28,254 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.276 [2024-10-11 19:59:28,254 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 107 flow. Second operand 10 states and 138 transitions. [2024-10-11 19:59:28,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 233 flow [2024-10-11 19:59:28,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:59:28,256 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 184 flow [2024-10-11 19:59:28,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=184, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-10-11 19:59:28,257 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-10-11 19:59:28,257 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 184 flow [2024-10-11 19:59:28,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 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 19:59:28,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:28,258 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:59:28,263 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 19:59:28,460 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 19:59:28,461 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-11 19:59:28,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:28,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1625984404, now seen corresponding path program 1 times [2024-10-11 19:59:28,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:28,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968982073] [2024-10-11 19:59:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:28,462 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 19:59:28,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:28,465 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 19:59:28,466 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 19:59:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:28,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:59:28,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:28,510 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 19:59:28,528 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 19:59:28,528 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:28,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:28,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968982073] [2024-10-11 19:59:28,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968982073] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:28,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:28,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:59:28,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854491668] [2024-10-11 19:59:28,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:28,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:59:28,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:28,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:59:28,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:59:28,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-11 19:59:28,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 19:59:28,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:28,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-11 19:59:28,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:28,704 INFO L124 PetriNetUnfolderBase]: 796/1187 cut-off events. [2024-10-11 19:59:28,705 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-11 19:59:28,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2415 conditions, 1187 events. 796/1187 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5404 event pairs, 608 based on Foata normal form. 0/972 useless extension candidates. Maximal degree in co-relation 2381. Up to 1138 conditions per place. [2024-10-11 19:59:28,710 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 35 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2024-10-11 19:59:28,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 260 flow [2024-10-11 19:59:28,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:59:28,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:59:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-10-11 19:59:28,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-10-11 19:59:28,711 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 184 flow. Second operand 4 states and 68 transitions. [2024-10-11 19:59:28,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 260 flow [2024-10-11 19:59:28,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 230 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-11 19:59:28,713 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 160 flow [2024-10-11 19:59:28,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-10-11 19:59:28,714 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-10-11 19:59:28,714 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 160 flow [2024-10-11 19:59:28,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 19:59:28,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:28,714 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:59:28,718 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 19:59:28,917 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 19:59:28,918 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-11 19:59:28,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:28,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1625984405, now seen corresponding path program 1 times [2024-10-11 19:59:28,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:28,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618291293] [2024-10-11 19:59:28,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:28,919 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 19:59:28,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:28,922 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 19:59:28,923 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 19:59:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:28,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 19:59:28,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:28,980 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 19:59:29,074 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 19:59:29,074 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:29,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:29,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618291293] [2024-10-11 19:59:29,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618291293] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:29,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:29,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:59:29,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515859964] [2024-10-11 19:59:29,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:29,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:59:29,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:29,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:59:29,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:59:29,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-10-11 19:59:29,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 19:59:29,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:29,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-10-11 19:59:29,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:29,380 INFO L124 PetriNetUnfolderBase]: 1152/1707 cut-off events. [2024-10-11 19:59:29,380 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-11 19:59:29,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3418 conditions, 1707 events. 1152/1707 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8131 event pairs, 462 based on Foata normal form. 0/1449 useless extension candidates. Maximal degree in co-relation 3387. Up to 1200 conditions per place. [2024-10-11 19:59:29,389 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 50 selfloop transitions, 9 changer transitions 0/64 dead transitions. [2024-10-11 19:59:29,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 64 transitions, 316 flow [2024-10-11 19:59:29,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:59:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:59:29,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-10-11 19:59:29,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.392 [2024-10-11 19:59:29,394 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 160 flow. Second operand 5 states and 98 transitions. [2024-10-11 19:59:29,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 64 transitions, 316 flow [2024-10-11 19:59:29,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 309 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:29,395 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 184 flow [2024-10-11 19:59:29,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-10-11 19:59:29,396 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-10-11 19:59:29,396 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 184 flow [2024-10-11 19:59:29,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 19:59:29,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:29,399 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:29,403 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 (6)] Forceful destruction successful, exit code 0 [2024-10-11 19:59:29,599 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 19:59:29,600 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-11 19:59:29,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:29,600 INFO L85 PathProgramCache]: Analyzing trace with hash -823844544, now seen corresponding path program 1 times [2024-10-11 19:59:29,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:29,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343996573] [2024-10-11 19:59:29,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:29,602 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 19:59:29,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:29,604 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 19:59:29,606 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 19:59:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:29,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 19:59:29,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:29,659 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 19:59:29,786 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 19:59:29,786 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:29,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:29,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343996573] [2024-10-11 19:59:29,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343996573] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:29,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:29,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:59:29,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521127312] [2024-10-11 19:59:29,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:29,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:59:29,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:29,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:59:29,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:59:29,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-10-11 19:59:29,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 19:59:29,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:29,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-10-11 19:59:29,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:30,145 INFO L124 PetriNetUnfolderBase]: 1691/2477 cut-off events. [2024-10-11 19:59:30,145 INFO L125 PetriNetUnfolderBase]: For 681/681 co-relation queries the response was YES. [2024-10-11 19:59:30,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5613 conditions, 2477 events. 1691/2477 cut-off events. For 681/681 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 12028 event pairs, 766 based on Foata normal form. 0/2240 useless extension candidates. Maximal degree in co-relation 5580. Up to 1707 conditions per place. [2024-10-11 19:59:30,176 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 53 selfloop transitions, 9 changer transitions 0/67 dead transitions. [2024-10-11 19:59:30,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 363 flow [2024-10-11 19:59:30,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:59:30,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:59:30,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-10-11 19:59:30,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.388 [2024-10-11 19:59:30,178 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 184 flow. Second operand 5 states and 97 transitions. [2024-10-11 19:59:30,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 363 flow [2024-10-11 19:59:30,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 67 transitions, 345 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:59:30,181 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 200 flow [2024-10-11 19:59:30,181 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-10-11 19:59:30,182 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-10-11 19:59:30,182 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 200 flow [2024-10-11 19:59:30,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 19:59:30,182 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:30,182 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:30,188 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 19:59:30,383 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 19:59:30,384 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-11 19:59:30,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:30,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1060806887, now seen corresponding path program 1 times [2024-10-11 19:59:30,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:30,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466782743] [2024-10-11 19:59:30,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:30,385 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 19:59:30,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:30,386 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 19:59:30,388 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 19:59:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:30,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 19:59:30,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:30,493 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 19:59:30,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:30,621 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:30,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:30,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466782743] [2024-10-11 19:59:30,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466782743] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:30,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:30,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:59:30,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169820275] [2024-10-11 19:59:30,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:30,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:59:30,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:30,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:59:30,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:59:30,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-10-11 19:59:30,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 19:59:30,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:30,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-10-11 19:59:30,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:31,032 INFO L124 PetriNetUnfolderBase]: 1853/2783 cut-off events. [2024-10-11 19:59:31,032 INFO L125 PetriNetUnfolderBase]: For 1232/1232 co-relation queries the response was YES. [2024-10-11 19:59:31,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6916 conditions, 2783 events. 1853/2783 cut-off events. For 1232/1232 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13857 event pairs, 1335 based on Foata normal form. 64/2735 useless extension candidates. Maximal degree in co-relation 6882. Up to 2344 conditions per place. [2024-10-11 19:59:31,047 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 67 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-10-11 19:59:31,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 77 transitions, 422 flow [2024-10-11 19:59:31,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:59:31,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:59:31,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-10-11 19:59:31,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.456 [2024-10-11 19:59:31,050 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 200 flow. Second operand 5 states and 114 transitions. [2024-10-11 19:59:31,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 77 transitions, 422 flow [2024-10-11 19:59:31,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 77 transitions, 403 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:59:31,055 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 222 flow [2024-10-11 19:59:31,055 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=222, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-10-11 19:59:31,056 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 6 predicate places. [2024-10-11 19:59:31,056 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 222 flow [2024-10-11 19:59:31,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 19:59:31,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:31,056 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:31,059 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 (8)] Ended with exit code 0 [2024-10-11 19:59:31,256 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 19:59:31,257 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-11 19:59:31,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:31,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1473314446, now seen corresponding path program 1 times [2024-10-11 19:59:31,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:31,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438473363] [2024-10-11 19:59:31,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:31,257 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 19:59:31,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:31,260 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 19:59:31,261 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 19:59:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:31,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:59:31,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:31,321 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:59:31,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:31,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438473363] [2024-10-11 19:59:31,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438473363] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:59:31,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:59:31,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:59:31,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382692925] [2024-10-11 19:59:31,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:59:31,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:59:31,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:31,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:59:31,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:59:31,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-10-11 19:59:31,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 19:59:31,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:31,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-10-11 19:59:31,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:31,574 INFO L124 PetriNetUnfolderBase]: 1690/2476 cut-off events. [2024-10-11 19:59:31,574 INFO L125 PetriNetUnfolderBase]: For 2060/2060 co-relation queries the response was YES. [2024-10-11 19:59:31,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6882 conditions, 2476 events. 1690/2476 cut-off events. For 2060/2060 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11743 event pairs, 1230 based on Foata normal form. 1/2413 useless extension candidates. Maximal degree in co-relation 6858. Up to 2344 conditions per place. [2024-10-11 19:59:31,589 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 42 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-10-11 19:59:31,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 286 flow [2024-10-11 19:59:31,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:59:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:59:31,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-10-11 19:59:31,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-10-11 19:59:31,591 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 222 flow. Second operand 3 states and 62 transitions. [2024-10-11 19:59:31,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 286 flow [2024-10-11 19:59:31,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 49 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:31,594 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 198 flow [2024-10-11 19:59:31,594 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-10-11 19:59:31,594 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-10-11 19:59:31,594 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 198 flow [2024-10-11 19:59:31,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 19:59:31,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:31,595 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:31,600 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 (9)] Ended with exit code 0 [2024-10-11 19:59:31,795 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 19:59:31,796 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-11 19:59:31,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:31,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1293900736, now seen corresponding path program 1 times [2024-10-11 19:59:31,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:31,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240455722] [2024-10-11 19:59:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:31,797 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 19:59:31,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:31,800 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 19:59:31,804 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 19:59:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:31,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:59:31,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:31,889 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 19:59:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:59:32,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:59:32,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:32,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240455722] [2024-10-11 19:59:32,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240455722] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:32,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:32,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 19:59:32,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100466354] [2024-10-11 19:59:32,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:32,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:59:32,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:32,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:59:32,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:59:32,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-11 19:59:32,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 198 flow. Second operand has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 19:59:32,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:32,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-11 19:59:32,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:34,192 INFO L124 PetriNetUnfolderBase]: 4243/5943 cut-off events. [2024-10-11 19:59:34,192 INFO L125 PetriNetUnfolderBase]: For 3388/3429 co-relation queries the response was YES. [2024-10-11 19:59:34,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16188 conditions, 5943 events. 4243/5943 cut-off events. For 3388/3429 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 29555 event pairs, 872 based on Foata normal form. 344/6259 useless extension candidates. Maximal degree in co-relation 16164. Up to 1728 conditions per place. [2024-10-11 19:59:34,219 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 180 selfloop transitions, 17 changer transitions 0/201 dead transitions. [2024-10-11 19:59:34,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 201 transitions, 1089 flow [2024-10-11 19:59:34,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 19:59:34,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 19:59:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 280 transitions. [2024-10-11 19:59:34,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-10-11 19:59:34,221 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 198 flow. Second operand 12 states and 280 transitions. [2024-10-11 19:59:34,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 201 transitions, 1089 flow [2024-10-11 19:59:34,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 201 transitions, 1085 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:59:34,224 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 284 flow [2024-10-11 19:59:34,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=284, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-10-11 19:59:34,225 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2024-10-11 19:59:34,225 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 284 flow [2024-10-11 19:59:34,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 19:59:34,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:34,225 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 19:59:34,232 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 19:59:34,426 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 19:59:34,426 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-11 19:59:34,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:34,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1320405288, now seen corresponding path program 2 times [2024-10-11 19:59:34,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:34,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478760092] [2024-10-11 19:59:34,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:59:34,427 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 19:59:34,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:34,433 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 19:59:34,434 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 19:59:34,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:59:34,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:59:34,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 19:59:34,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:34,500 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 19:59:34,705 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 19:59:34,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:35,212 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 19:59:35,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:35,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478760092] [2024-10-11 19:59:35,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478760092] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:35,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:35,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:59:35,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742830910] [2024-10-11 19:59:35,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:35,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:59:35,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:35,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:59:35,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:59:35,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-11 19:59:35,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 284 flow. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 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 19:59:35,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:35,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-11 19:59:35,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:37,562 INFO L124 PetriNetUnfolderBase]: 3164/4764 cut-off events. [2024-10-11 19:59:37,563 INFO L125 PetriNetUnfolderBase]: For 6278/6342 co-relation queries the response was YES. [2024-10-11 19:59:37,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14942 conditions, 4764 events. 3164/4764 cut-off events. For 6278/6342 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 25580 event pairs, 2366 based on Foata normal form. 70/4774 useless extension candidates. Maximal degree in co-relation 14833. Up to 4371 conditions per place. [2024-10-11 19:59:37,591 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 38 selfloop transitions, 30 changer transitions 0/76 dead transitions. [2024-10-11 19:59:37,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 76 transitions, 528 flow [2024-10-11 19:59:37,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:59:37,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:59:37,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 263 transitions. [2024-10-11 19:59:37,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2390909090909091 [2024-10-11 19:59:37,595 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 284 flow. Second operand 22 states and 263 transitions. [2024-10-11 19:59:37,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 76 transitions, 528 flow [2024-10-11 19:59:37,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 76 transitions, 502 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-11 19:59:37,609 INFO L231 Difference]: Finished difference. Result has 93 places, 76 transitions, 456 flow [2024-10-11 19:59:37,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=456, PETRI_PLACES=93, PETRI_TRANSITIONS=76} [2024-10-11 19:59:37,610 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 41 predicate places. [2024-10-11 19:59:37,610 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 76 transitions, 456 flow [2024-10-11 19:59:37,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 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 19:59:37,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:37,612 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:37,618 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 (11)] Forceful destruction successful, exit code 0 [2024-10-11 19:59:37,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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 19:59:37,812 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-11 19:59:37,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:37,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1454806727, now seen corresponding path program 1 times [2024-10-11 19:59:37,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:37,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815379378] [2024-10-11 19:59:37,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:37,813 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 19:59:37,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:37,816 INFO L229 MonitoredProcess]: Starting monitored process 12 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 19:59:37,817 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 (12)] Waiting until timeout for monitored process [2024-10-11 19:59:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:37,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 19:59:37,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:37,908 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 19:59:38,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:38,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:38,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:38,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:38,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815379378] [2024-10-11 19:59:38,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815379378] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:38,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:38,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 19:59:38,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969596167] [2024-10-11 19:59:38,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:38,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:59:38,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:38,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:59:38,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:59:38,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-11 19:59:38,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 76 transitions, 456 flow. Second operand has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 19:59:38,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:38,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-11 19:59:38,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:41,976 INFO L124 PetriNetUnfolderBase]: 11832/17576 cut-off events. [2024-10-11 19:59:41,977 INFO L125 PetriNetUnfolderBase]: For 23752/24322 co-relation queries the response was YES. [2024-10-11 19:59:42,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52770 conditions, 17576 events. 11832/17576 cut-off events. For 23752/24322 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 110954 event pairs, 5769 based on Foata normal form. 826/18346 useless extension candidates. Maximal degree in co-relation 52711. Up to 3781 conditions per place. [2024-10-11 19:59:42,100 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 219 selfloop transitions, 34 changer transitions 0/261 dead transitions. [2024-10-11 19:59:42,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 261 transitions, 1826 flow [2024-10-11 19:59:42,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 19:59:42,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 19:59:42,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 290 transitions. [2024-10-11 19:59:42,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-10-11 19:59:42,104 INFO L175 Difference]: Start difference. First operand has 93 places, 76 transitions, 456 flow. Second operand 14 states and 290 transitions. [2024-10-11 19:59:42,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 261 transitions, 1826 flow [2024-10-11 19:59:42,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 261 transitions, 1748 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-10-11 19:59:42,144 INFO L231 Difference]: Finished difference. Result has 99 places, 87 transitions, 505 flow [2024-10-11 19:59:42,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=505, PETRI_PLACES=99, PETRI_TRANSITIONS=87} [2024-10-11 19:59:42,145 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 47 predicate places. [2024-10-11 19:59:42,145 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 87 transitions, 505 flow [2024-10-11 19:59:42,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 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 19:59:42,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:42,146 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:42,151 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 (12)] Ended with exit code 0 [2024-10-11 19:59:42,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /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 19:59:42,352 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-11 19:59:42,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:42,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1135370914, now seen corresponding path program 1 times [2024-10-11 19:59:42,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:42,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019798864] [2024-10-11 19:59:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:42,353 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 19:59:42,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:42,355 INFO L229 MonitoredProcess]: Starting monitored process 13 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 19:59:42,356 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 (13)] Waiting until timeout for monitored process [2024-10-11 19:59:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:42,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:59:42,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:42,416 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 19:59:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:59:42,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:59:43,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:43,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019798864] [2024-10-11 19:59:43,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019798864] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:43,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:43,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 19:59:43,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392313305] [2024-10-11 19:59:43,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:43,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:59:43,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:43,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:59:43,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:59:43,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-11 19:59:43,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 505 flow. Second operand has 12 states, 12 states have (on average 11.166666666666666) internal successors, (134), 12 states have internal predecessors, (134), 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 19:59:43,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:43,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-11 19:59:43,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:47,964 INFO L124 PetriNetUnfolderBase]: 29492/40672 cut-off events. [2024-10-11 19:59:47,964 INFO L125 PetriNetUnfolderBase]: For 82402/85574 co-relation queries the response was YES. [2024-10-11 19:59:48,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137160 conditions, 40672 events. 29492/40672 cut-off events. For 82402/85574 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 242581 event pairs, 5514 based on Foata normal form. 3822/44443 useless extension candidates. Maximal degree in co-relation 137107. Up to 13070 conditions per place. [2024-10-11 19:59:48,387 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 292 selfloop transitions, 24 changer transitions 0/324 dead transitions. [2024-10-11 19:59:48,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 324 transitions, 2435 flow [2024-10-11 19:59:48,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 19:59:48,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 19:59:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 245 transitions. [2024-10-11 19:59:48,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-10-11 19:59:48,390 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 505 flow. Second operand 11 states and 245 transitions. [2024-10-11 19:59:48,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 324 transitions, 2435 flow [2024-10-11 19:59:48,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 324 transitions, 2425 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:59:48,462 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 616 flow [2024-10-11 19:59:48,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=616, PETRI_PLACES=109, PETRI_TRANSITIONS=97} [2024-10-11 19:59:48,462 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 57 predicate places. [2024-10-11 19:59:48,463 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 616 flow [2024-10-11 19:59:48,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.166666666666666) internal successors, (134), 12 states have internal predecessors, (134), 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 19:59:48,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:48,463 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:48,467 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 (13)] Ended with exit code 0 [2024-10-11 19:59:48,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 19:59:48,666 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-11 19:59:48,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:48,667 INFO L85 PathProgramCache]: Analyzing trace with hash 368359573, now seen corresponding path program 1 times [2024-10-11 19:59:48,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:48,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281458033] [2024-10-11 19:59:48,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:59:48,667 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 19:59:48,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:48,670 INFO L229 MonitoredProcess]: Starting monitored process 14 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 19:59:48,671 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 (14)] Waiting until timeout for monitored process [2024-10-11 19:59:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:59:48,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 19:59:48,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:48,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:48,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:49,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:49,023 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:49,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281458033] [2024-10-11 19:59:49,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281458033] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:49,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:49,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-10-11 19:59:49,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318160992] [2024-10-11 19:59:49,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:49,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:59:49,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:49,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:59:49,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:59:49,126 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-11 19:59:49,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 97 transitions, 616 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 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 19:59:49,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:49,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-11 19:59:49,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:59:52,586 INFO L124 PetriNetUnfolderBase]: 22229/32181 cut-off events. [2024-10-11 19:59:52,587 INFO L125 PetriNetUnfolderBase]: For 93134/95906 co-relation queries the response was YES. [2024-10-11 19:59:52,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121822 conditions, 32181 events. 22229/32181 cut-off events. For 93134/95906 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 199750 event pairs, 13231 based on Foata normal form. 2812/34985 useless extension candidates. Maximal degree in co-relation 121766. Up to 21248 conditions per place. [2024-10-11 19:59:52,949 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 150 selfloop transitions, 25 changer transitions 0/187 dead transitions. [2024-10-11 19:59:52,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 187 transitions, 1515 flow [2024-10-11 19:59:52,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 19:59:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 19:59:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-10-11 19:59:52,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-10-11 19:59:52,952 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 616 flow. Second operand 8 states and 160 transitions. [2024-10-11 19:59:52,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 187 transitions, 1515 flow [2024-10-11 19:59:53,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 187 transitions, 1443 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-10-11 19:59:53,113 INFO L231 Difference]: Finished difference. Result has 112 places, 95 transitions, 634 flow [2024-10-11 19:59:53,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=634, PETRI_PLACES=112, PETRI_TRANSITIONS=95} [2024-10-11 19:59:53,114 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 60 predicate places. [2024-10-11 19:59:53,114 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 95 transitions, 634 flow [2024-10-11 19:59:53,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 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 19:59:53,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:59:53,114 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:59:53,121 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 (14)] Ended with exit code 0 [2024-10-11 19:59:53,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /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 19:59:53,315 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-11 19:59:53,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:59:53,316 INFO L85 PathProgramCache]: Analyzing trace with hash -875096786, now seen corresponding path program 2 times [2024-10-11 19:59:53,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:59:53,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709218799] [2024-10-11 19:59:53,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:59:53,316 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 19:59:53,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:59:53,319 INFO L229 MonitoredProcess]: Starting monitored process 15 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 19:59:53,320 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 (15)] Waiting until timeout for monitored process [2024-10-11 19:59:53,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:59:53,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:59:53,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 19:59:53,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:59:53,404 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 19:59:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:53,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:59:55,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:59:55,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:59:55,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709218799] [2024-10-11 19:59:55,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709218799] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:59:55,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:59:55,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2024-10-11 19:59:55,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021885401] [2024-10-11 19:59:55,014 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:59:55,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 19:59:55,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:59:55,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 19:59:55,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-10-11 19:59:56,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-10-11 19:59:56,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 95 transitions, 634 flow. Second operand has 16 states, 16 states have (on average 11.125) internal successors, (178), 16 states have internal predecessors, (178), 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 19:59:56,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:59:56,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-10-11 19:59:56,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:09,715 INFO L124 PetriNetUnfolderBase]: 47625/66659 cut-off events. [2024-10-11 20:00:09,716 INFO L125 PetriNetUnfolderBase]: For 188084/196086 co-relation queries the response was YES. [2024-10-11 20:00:10,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253136 conditions, 66659 events. 47625/66659 cut-off events. For 188084/196086 co-relation queries the response was YES. Maximal size of possible extension queue 1394. Compared 431145 event pairs, 16087 based on Foata normal form. 6202/72853 useless extension candidates. Maximal degree in co-relation 253077. Up to 16257 conditions per place. [2024-10-11 20:00:10,457 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 474 selfloop transitions, 47 changer transitions 0/533 dead transitions. [2024-10-11 20:00:10,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 533 transitions, 4190 flow [2024-10-11 20:00:10,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 20:00:10,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 20:00:10,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 477 transitions. [2024-10-11 20:00:10,460 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43363636363636365 [2024-10-11 20:00:10,460 INFO L175 Difference]: Start difference. First operand has 112 places, 95 transitions, 634 flow. Second operand 22 states and 477 transitions. [2024-10-11 20:00:10,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 533 transitions, 4190 flow [2024-10-11 20:00:10,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 533 transitions, 4156 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-11 20:00:10,952 INFO L231 Difference]: Finished difference. Result has 134 places, 113 transitions, 860 flow [2024-10-11 20:00:10,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=860, PETRI_PLACES=134, PETRI_TRANSITIONS=113} [2024-10-11 20:00:10,954 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 82 predicate places. [2024-10-11 20:00:10,955 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 113 transitions, 860 flow [2024-10-11 20:00:10,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.125) internal successors, (178), 16 states have internal predecessors, (178), 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 20:00:10,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:10,958 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:10,962 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 (15)] Ended with exit code 0 [2024-10-11 20:00:11,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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 20:00:11,159 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-11 20:00:11,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:11,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1851088398, now seen corresponding path program 2 times [2024-10-11 20:00:11,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:11,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064364990] [2024-10-11 20:00:11,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:00:11,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:00:11,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:11,162 INFO L229 MonitoredProcess]: Starting monitored process 16 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 20:00:11,163 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 (16)] Waiting until timeout for monitored process [2024-10-11 20:00:11,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:00:11,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:11,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 20:00:11,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:11,240 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 20:00:11,582 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 20:00:11,582 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:00:11,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:11,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064364990] [2024-10-11 20:00:11,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064364990] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:00:11,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:00:11,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 20:00:11,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918991438] [2024-10-11 20:00:11,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:00:11,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 20:00:11,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:11,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 20:00:11,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 20:00:11,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-10-11 20:00:11,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 113 transitions, 860 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 20:00:11,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:11,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-10-11 20:00:11,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:17,956 INFO L124 PetriNetUnfolderBase]: 38039/56783 cut-off events. [2024-10-11 20:00:17,956 INFO L125 PetriNetUnfolderBase]: For 228013/234919 co-relation queries the response was YES. [2024-10-11 20:00:18,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234177 conditions, 56783 events. 38039/56783 cut-off events. For 228013/234919 co-relation queries the response was YES. Maximal size of possible extension queue 1276. Compared 401861 event pairs, 19977 based on Foata normal form. 6118/62693 useless extension candidates. Maximal degree in co-relation 234112. Up to 37965 conditions per place. [2024-10-11 20:00:18,740 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 105 selfloop transitions, 21 changer transitions 0/141 dead transitions. [2024-10-11 20:00:18,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 141 transitions, 1272 flow [2024-10-11 20:00:18,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:00:18,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:00:18,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-10-11 20:00:18,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.384 [2024-10-11 20:00:18,742 INFO L175 Difference]: Start difference. First operand has 134 places, 113 transitions, 860 flow. Second operand 5 states and 96 transitions. [2024-10-11 20:00:18,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 141 transitions, 1272 flow [2024-10-11 20:00:19,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 141 transitions, 1233 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-10-11 20:00:19,525 INFO L231 Difference]: Finished difference. Result has 131 places, 112 transitions, 864 flow [2024-10-11 20:00:19,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=864, PETRI_PLACES=131, PETRI_TRANSITIONS=112} [2024-10-11 20:00:19,525 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 79 predicate places. [2024-10-11 20:00:19,525 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 112 transitions, 864 flow [2024-10-11 20:00:19,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 20:00:19,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:19,526 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:19,532 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 (16)] Ended with exit code 0 [2024-10-11 20:00:19,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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 20:00:19,726 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-11 20:00:19,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:19,727 INFO L85 PathProgramCache]: Analyzing trace with hash -239535140, now seen corresponding path program 2 times [2024-10-11 20:00:19,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:19,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636668572] [2024-10-11 20:00:19,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:00:19,727 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 20:00:19,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:19,729 INFO L229 MonitoredProcess]: Starting monitored process 17 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 20:00:19,730 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 (17)] Waiting until timeout for monitored process [2024-10-11 20:00:19,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:00:19,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:19,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 20:00:19,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:19,810 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 20:00:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:20,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:21,146 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:21,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:21,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636668572] [2024-10-11 20:00:21,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636668572] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:21,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:00:21,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2024-10-11 20:00:21,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047540729] [2024-10-11 20:00:21,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:21,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 20:00:21,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:21,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 20:00:21,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-10-11 20:00:21,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-10-11 20:00:21,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 112 transitions, 864 flow. Second operand has 18 states, 18 states have (on average 11.666666666666666) internal successors, (210), 18 states have internal predecessors, (210), 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 20:00:21,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:21,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-10-11 20:00:21,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:00:31,546 INFO L124 PetriNetUnfolderBase]: 37387/55006 cut-off events. [2024-10-11 20:00:31,547 INFO L125 PetriNetUnfolderBase]: For 231259/238388 co-relation queries the response was YES. [2024-10-11 20:00:32,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228522 conditions, 55006 events. 37387/55006 cut-off events. For 231259/238388 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 373665 event pairs, 12123 based on Foata normal form. 4126/58976 useless extension candidates. Maximal degree in co-relation 228456. Up to 15872 conditions per place. [2024-10-11 20:00:32,368 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 505 selfloop transitions, 50 changer transitions 0/570 dead transitions. [2024-10-11 20:00:32,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 570 transitions, 5098 flow [2024-10-11 20:00:32,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 20:00:32,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 20:00:32,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 505 transitions. [2024-10-11 20:00:32,372 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2024-10-11 20:00:32,372 INFO L175 Difference]: Start difference. First operand has 131 places, 112 transitions, 864 flow. Second operand 21 states and 505 transitions. [2024-10-11 20:00:32,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 570 transitions, 5098 flow [2024-10-11 20:00:32,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 570 transitions, 5020 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 20:00:32,927 INFO L231 Difference]: Finished difference. Result has 152 places, 136 transitions, 1119 flow [2024-10-11 20:00:32,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1119, PETRI_PLACES=152, PETRI_TRANSITIONS=136} [2024-10-11 20:00:32,928 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 100 predicate places. [2024-10-11 20:00:32,928 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 136 transitions, 1119 flow [2024-10-11 20:00:32,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.666666666666666) internal successors, (210), 18 states have internal predecessors, (210), 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 20:00:32,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:00:32,929 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:00:32,936 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 (17)] Ended with exit code 0 [2024-10-11 20:00:33,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 20:00:33,130 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-10-11 20:00:33,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:00:33,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1098031111, now seen corresponding path program 2 times [2024-10-11 20:00:33,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:00:33,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127933243] [2024-10-11 20:00:33,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:00:33,131 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 20:00:33,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:00:33,136 INFO L229 MonitoredProcess]: Starting monitored process 18 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 20:00:33,137 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 (18)] Waiting until timeout for monitored process [2024-10-11 20:00:33,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:00:33,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:00:33,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 20:00:33,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:00:33,219 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 20:00:33,570 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:33,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:00:34,533 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:00:34,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:00:34,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127933243] [2024-10-11 20:00:34,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127933243] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:00:34,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:00:34,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2024-10-11 20:00:34,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497913765] [2024-10-11 20:00:34,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:00:34,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 20:00:34,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:00:34,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 20:00:34,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-10-11 20:00:35,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-10-11 20:00:35,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 136 transitions, 1119 flow. Second operand has 18 states, 18 states have (on average 11.88888888888889) internal successors, (214), 18 states have internal predecessors, (214), 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 20:00:35,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:00:35,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-10-11 20:00:35,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand