./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/test-context1.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/test-context1.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 d63a80d2bfe8ff8bb62e6b5083cee589f2cb0f37dc67867654ab7601d82af23e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:02:42,234 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:02:42,300 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 20:02:42,306 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:02:42,307 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:02:42,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:02:42,332 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:02:42,332 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:02:42,333 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:02:42,334 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:02:42,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:02:42,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:02:42,336 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:02:42,336 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:02:42,337 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:02:42,337 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:02:42,337 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:02:42,338 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:02:42,338 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:02:42,338 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:02:42,338 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:02:42,342 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:02:42,342 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:02:42,342 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:02:42,343 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:02:42,343 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:02:42,343 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:02:42,343 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:02:42,343 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:02:42,344 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:02:42,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:02:42,344 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:02:42,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:02:42,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:02:42,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:02:42,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:02:42,345 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 20:02:42,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 20:02:42,346 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:02:42,346 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:02:42,346 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:02:42,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:02:42,347 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d63a80d2bfe8ff8bb62e6b5083cee589f2cb0f37dc67867654ab7601d82af23e [2024-10-11 20:02:42,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:02:42,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:02:42,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:02:42,618 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:02:42,619 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:02:42,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-context1.wvr.c [2024-10-11 20:02:43,933 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:02:44,099 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:02:44,099 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-context1.wvr.c [2024-10-11 20:02:44,107 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3a63c0a5d/50bf4b4fc3304614a0042fbd9194b9f6/FLAGc5901b102 [2024-10-11 20:02:44,119 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3a63c0a5d/50bf4b4fc3304614a0042fbd9194b9f6 [2024-10-11 20:02:44,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:02:44,122 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:02:44,125 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:02:44,125 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:02:44,130 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:02:44,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:02:44" (1/1) ... [2024-10-11 20:02:44,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a5afb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:02:44, skipping insertion in model container [2024-10-11 20:02:44,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:02:44" (1/1) ... [2024-10-11 20:02:44,154 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:02:44,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:02:44,345 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 20:02:44,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@db21e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:02:44, skipping insertion in model container [2024-10-11 20:02:44,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:02:44,348 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 20:02:44,349 INFO L158 Benchmark]: Toolchain (without parser) took 226.54ms. Allocated memory is still 132.1MB. Free memory was 63.3MB in the beginning and 52.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 20:02:44,361 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 132.1MB. Free memory was 100.7MB in the beginning and 100.6MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 20:02:44,362 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.75ms. Allocated memory is still 132.1MB. Free memory was 63.3MB in the beginning and 52.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 20:02:44,364 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 132.1MB. Free memory was 100.7MB in the beginning and 100.6MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.75ms. Allocated memory is still 132.1MB. Free memory was 63.3MB in the beginning and 52.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 94]: 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/test-context1.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 d63a80d2bfe8ff8bb62e6b5083cee589f2cb0f37dc67867654ab7601d82af23e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:02:46,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:02:46,372 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 20:02:46,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:02:46,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:02:46,410 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:02:46,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:02:46,411 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:02:46,412 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:02:46,412 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:02:46,412 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:02:46,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:02:46,413 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:02:46,413 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:02:46,414 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:02:46,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:02:46,416 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:02:46,417 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:02:46,417 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:02:46,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:02:46,417 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:02:46,420 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:02:46,421 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:02:46,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:02:46,421 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:02:46,421 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 20:02:46,421 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:02:46,421 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 20:02:46,422 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:02:46,422 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:02:46,422 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:02:46,422 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:02:46,422 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:02:46,422 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:02:46,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:02:46,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:02:46,423 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:02:46,424 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:02:46,424 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 20:02:46,424 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 20:02:46,424 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:02:46,425 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:02:46,425 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:02:46,425 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:02:46,425 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 20:02:46,425 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d63a80d2bfe8ff8bb62e6b5083cee589f2cb0f37dc67867654ab7601d82af23e [2024-10-11 20:02:46,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:02:46,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:02:46,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:02:46,706 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:02:46,707 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:02:46,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-context1.wvr.c [2024-10-11 20:02:48,150 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:02:48,352 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:02:48,352 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-context1.wvr.c [2024-10-11 20:02:48,360 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d62858b9f/09b08261c0344211900276fb46de8cdf/FLAG6a9d93039 [2024-10-11 20:02:48,373 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d62858b9f/09b08261c0344211900276fb46de8cdf [2024-10-11 20:02:48,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:02:48,378 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:02:48,379 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:02:48,379 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:02:48,383 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:02:48,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:02:48" (1/1) ... [2024-10-11 20:02:48,387 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6944398b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:02:48, skipping insertion in model container [2024-10-11 20:02:48,387 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:02:48" (1/1) ... [2024-10-11 20:02:48,406 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:02:48,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:02:48,583 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 20:02:48,588 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:02:48,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:02:48,612 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 20:02:48,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:02:48,663 INFO L204 MainTranslator]: Completed translation [2024-10-11 20:02:48,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:02:48 WrapperNode [2024-10-11 20:02:48,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:02:48,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 20:02:48,665 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 20:02:48,665 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 20:02:48,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:02:48" (1/1) ... [2024-10-11 20:02:48,685 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:02:48" (1/1) ... [2024-10-11 20:02:48,708 INFO L138 Inliner]: procedures = 25, calls = 25, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 127 [2024-10-11 20:02:48,709 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 20:02:48,709 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 20:02:48,709 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 20:02:48,709 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 20:02:48,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:02:48" (1/1) ... [2024-10-11 20:02:48,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:02:48" (1/1) ... [2024-10-11 20:02:48,721 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:02:48" (1/1) ... [2024-10-11 20:02:48,737 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 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 20:02:48,737 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:02:48" (1/1) ... [2024-10-11 20:02:48,737 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:02:48" (1/1) ... [2024-10-11 20:02:48,743 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:02:48" (1/1) ... [2024-10-11 20:02:48,745 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:02:48" (1/1) ... [2024-10-11 20:02:48,747 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:02:48" (1/1) ... [2024-10-11 20:02:48,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:02:48" (1/1) ... [2024-10-11 20:02:48,751 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 20:02:48,752 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 20:02:48,752 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 20:02:48,752 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 20:02:48,753 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:02:48" (1/1) ... [2024-10-11 20:02:48,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:02:48,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:02:48,784 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 20:02:48,786 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 20:02:48,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 20:02:48,819 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 20:02:48,819 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 20:02:48,820 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 20:02:48,820 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 20:02:48,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 20:02:48,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 20:02:48,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 20:02:48,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 20:02:48,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 20:02:48,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 20:02:48,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 20:02:48,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 20:02:48,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 20:02:48,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 20:02:48,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 20:02:48,825 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 20:02:48,916 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 20:02:48,917 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 20:02:49,108 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 20:02:49,108 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 20:02:49,324 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 20:02:49,325 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 20:02:49,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:02:49 BoogieIcfgContainer [2024-10-11 20:02:49,326 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 20:02:49,328 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 20:02:49,328 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 20:02:49,331 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 20:02:49,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 08:02:48" (1/3) ... [2024-10-11 20:02:49,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aab9824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:02:49, skipping insertion in model container [2024-10-11 20:02:49,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:02:48" (2/3) ... [2024-10-11 20:02:49,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aab9824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:02:49, skipping insertion in model container [2024-10-11 20:02:49,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:02:49" (3/3) ... [2024-10-11 20:02:49,334 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2024-10-11 20:02:49,347 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 20:02:49,347 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-11 20:02:49,347 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 20:02:49,393 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 20:02:49,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 88 flow [2024-10-11 20:02:49,451 INFO L124 PetriNetUnfolderBase]: 5/35 cut-off events. [2024-10-11 20:02:49,451 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 20:02:49,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 5/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-10-11 20:02:49,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 37 transitions, 88 flow [2024-10-11 20:02:49,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 34 transitions, 80 flow [2024-10-11 20:02:49,468 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 20:02:49,474 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;@414448b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 20:02:49,475 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-11 20:02:49,478 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 20:02:49,480 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 20:02:49,481 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 20:02:49,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:49,481 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:02:49,482 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:49,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:49,486 INFO L85 PathProgramCache]: Analyzing trace with hash 419077, now seen corresponding path program 1 times [2024-10-11 20:02:49,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:49,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943746943] [2024-10-11 20:02:49,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:02:49,496 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 20:02:49,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:49,499 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 20:02:49,505 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 20:02:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:49,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:02:49,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:49,644 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 20:02:49,657 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 20:02:49,657 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:02:49,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:49,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943746943] [2024-10-11 20:02:49,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943746943] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:02:49,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:02:49,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 20:02:49,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138385131] [2024-10-11 20:02:49,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:02:49,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:02:49,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:49,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:02:49,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:02:49,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-11 20:02:49,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 20:02:49,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:49,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-11 20:02:49,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:49,840 INFO L124 PetriNetUnfolderBase]: 212/371 cut-off events. [2024-10-11 20:02:49,840 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-11 20:02:49,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 371 events. 212/371 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1449 event pairs, 176 based on Foata normal form. 1/266 useless extension candidates. Maximal degree in co-relation 705. Up to 364 conditions per place. [2024-10-11 20:02:49,845 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 23 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-10-11 20:02:49,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2024-10-11 20:02:49,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:02:49,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:02:49,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-10-11 20:02:49,855 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-10-11 20:02:49,857 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 80 flow. Second operand 3 states and 50 transitions. [2024-10-11 20:02:49,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2024-10-11 20:02:49,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:02:49,860 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 66 flow [2024-10-11 20:02:49,862 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2024-10-11 20:02:49,865 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2024-10-11 20:02:49,865 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 66 flow [2024-10-11 20:02:49,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 20:02:49,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:49,865 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:02:49,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-11 20:02:50,066 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 20:02:50,067 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:50,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash 419078, now seen corresponding path program 1 times [2024-10-11 20:02:50,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:50,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021073526] [2024-10-11 20:02:50,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:02:50,069 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 20:02:50,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:50,072 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 20:02:50,074 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 20:02:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:50,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 20:02:50,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:50,127 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 20:02:50,204 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 20:02:50,204 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:02:50,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:50,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021073526] [2024-10-11 20:02:50,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021073526] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:02:50,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:02:50,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:02:50,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179668639] [2024-10-11 20:02:50,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:02:50,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:02:50,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:50,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:02:50,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:02:50,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-11 20:02:50,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 20:02:50,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:50,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-11 20:02:50,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:50,453 INFO L124 PetriNetUnfolderBase]: 213/374 cut-off events. [2024-10-11 20:02:50,453 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 20:02:50,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 374 events. 213/374 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1459 event pairs, 176 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 737. Up to 369 conditions per place. [2024-10-11 20:02:50,458 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 25 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-10-11 20:02:50,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 132 flow [2024-10-11 20:02:50,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:02:50,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:02:50,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-10-11 20:02:50,460 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3918918918918919 [2024-10-11 20:02:50,460 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 66 flow. Second operand 4 states and 58 transitions. [2024-10-11 20:02:50,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 132 flow [2024-10-11 20:02:50,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:02:50,462 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 89 flow [2024-10-11 20:02:50,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2024-10-11 20:02:50,468 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2024-10-11 20:02:50,469 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 89 flow [2024-10-11 20:02:50,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 20:02:50,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:50,469 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 20:02:50,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-11 20:02:50,669 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 20:02:50,670 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:50,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:50,670 INFO L85 PathProgramCache]: Analyzing trace with hash 402746533, now seen corresponding path program 1 times [2024-10-11 20:02:50,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:50,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811884850] [2024-10-11 20:02:50,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:02:50,671 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 20:02:50,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:50,672 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 20:02:50,674 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 20:02:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:50,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 20:02:50,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:50,736 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 20:02:50,886 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 20:02:50,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:51,099 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 20:02:51,099 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:51,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811884850] [2024-10-11 20:02:51,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811884850] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:51,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:51,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 20:02:51,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946738496] [2024-10-11 20:02:51,100 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:51,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:02:51,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:51,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:02:51,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:02:51,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-11 20:02:51,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 89 flow. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 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 20:02:51,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:51,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-11 20:02:51,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:51,494 INFO L124 PetriNetUnfolderBase]: 216/383 cut-off events. [2024-10-11 20:02:51,494 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 20:02:51,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 383 events. 216/383 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1497 event pairs, 176 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 744. Up to 372 conditions per place. [2024-10-11 20:02:51,497 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 25 selfloop transitions, 13 changer transitions 0/41 dead transitions. [2024-10-11 20:02:51,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 201 flow [2024-10-11 20:02:51,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:02:51,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:02:51,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-10-11 20:02:51,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-10-11 20:02:51,499 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 89 flow. Second operand 10 states and 111 transitions. [2024-10-11 20:02:51,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 201 flow [2024-10-11 20:02:51,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 20:02:51,500 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 166 flow [2024-10-11 20:02:51,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=166, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2024-10-11 20:02:51,505 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2024-10-11 20:02:51,505 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 166 flow [2024-10-11 20:02:51,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 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 20:02:51,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:51,505 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:51,508 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 (4)] Forceful destruction successful, exit code 0 [2024-10-11 20:02:51,706 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 20:02:51,706 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:51,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:51,707 INFO L85 PathProgramCache]: Analyzing trace with hash 571861567, now seen corresponding path program 1 times [2024-10-11 20:02:51,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:51,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672817914] [2024-10-11 20:02:51,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:02:51,707 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 20:02:51,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:51,709 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 20:02:51,710 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 20:02:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:51,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 20:02:51,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:51,772 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 20:02:51,789 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 20:02:51,789 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:02:51,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:51,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672817914] [2024-10-11 20:02:51,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672817914] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:02:51,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:02:51,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:02:51,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857007679] [2024-10-11 20:02:51,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:02:51,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:02:51,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:51,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:02:51,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:02:51,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-11 20:02:51,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 20:02:51,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:51,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-11 20:02:51,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:51,873 INFO L124 PetriNetUnfolderBase]: 168/302 cut-off events. [2024-10-11 20:02:51,874 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-11 20:02:51,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 302 events. 168/302 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1102 event pairs, 132 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 621. Up to 286 conditions per place. [2024-10-11 20:02:51,875 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 29 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2024-10-11 20:02:51,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 232 flow [2024-10-11 20:02:51,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:02:51,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:02:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2024-10-11 20:02:51,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3581081081081081 [2024-10-11 20:02:51,877 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 166 flow. Second operand 4 states and 53 transitions. [2024-10-11 20:02:51,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 232 flow [2024-10-11 20:02:51,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 202 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-11 20:02:51,879 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 144 flow [2024-10-11 20:02:51,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-10-11 20:02:51,879 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2024-10-11 20:02:51,880 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 144 flow [2024-10-11 20:02:51,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 20:02:51,880 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:51,880 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:51,884 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 20:02:52,082 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 20:02:52,083 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:52,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:52,083 INFO L85 PathProgramCache]: Analyzing trace with hash 571861568, now seen corresponding path program 1 times [2024-10-11 20:02:52,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:52,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186507965] [2024-10-11 20:02:52,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:02:52,084 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 20:02:52,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:52,088 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 20:02:52,089 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 20:02:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:52,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 20:02:52,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:52,155 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 20:02:52,285 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 20:02:52,285 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:02:52,288 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:52,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186507965] [2024-10-11 20:02:52,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186507965] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:02:52,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:02:52,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:02:52,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728485111] [2024-10-11 20:02:52,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:02:52,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:02:52,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:52,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:02:52,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:02:52,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:02:52,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 20:02:52,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:52,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:02:52,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:52,451 INFO L124 PetriNetUnfolderBase]: 230/419 cut-off events. [2024-10-11 20:02:52,451 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-11 20:02:52,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 883 conditions, 419 events. 230/419 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1613 event pairs, 90 based on Foata normal form. 11/348 useless extension candidates. Maximal degree in co-relation 852. Up to 263 conditions per place. [2024-10-11 20:02:52,453 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 43 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-10-11 20:02:52,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 277 flow [2024-10-11 20:02:52,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:02:52,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:02:52,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-10-11 20:02:52,455 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-10-11 20:02:52,455 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 144 flow. Second operand 4 states and 73 transitions. [2024-10-11 20:02:52,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 277 flow [2024-10-11 20:02:52,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:02:52,457 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 167 flow [2024-10-11 20:02:52,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-10-11 20:02:52,458 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2024-10-11 20:02:52,458 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 167 flow [2024-10-11 20:02:52,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 20:02:52,458 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:52,458 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:52,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-11 20:02:52,660 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 20:02:52,661 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:52,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:52,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1806866834, now seen corresponding path program 1 times [2024-10-11 20:02:52,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:52,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213866801] [2024-10-11 20:02:52,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:02:52,662 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 20:02:52,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:52,667 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 20:02:52,669 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 20:02:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:52,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 20:02:52,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:52,725 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 20:02:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:02:52,905 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:02:52,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:52,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213866801] [2024-10-11 20:02:52,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213866801] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:02:52,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:02:52,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 20:02:52,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997172694] [2024-10-11 20:02:52,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:02:52,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:02:52,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:52,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:02:52,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:02:52,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:02:52,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 167 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 20:02:52,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:52,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:02:52,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:53,097 INFO L124 PetriNetUnfolderBase]: 297/558 cut-off events. [2024-10-11 20:02:53,098 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-10-11 20:02:53,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1251 conditions, 558 events. 297/558 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2410 event pairs, 264 based on Foata normal form. 12/465 useless extension candidates. Maximal degree in co-relation 1218. Up to 411 conditions per place. [2024-10-11 20:02:53,100 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 46 selfloop transitions, 3 changer transitions 2/55 dead transitions. [2024-10-11 20:02:53,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 303 flow [2024-10-11 20:02:53,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:02:53,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:02:53,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-10-11 20:02:53,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 20:02:53,101 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 167 flow. Second operand 4 states and 74 transitions. [2024-10-11 20:02:53,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 303 flow [2024-10-11 20:02:53,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 295 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:02:53,103 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 168 flow [2024-10-11 20:02:53,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-10-11 20:02:53,104 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2024-10-11 20:02:53,104 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 168 flow [2024-10-11 20:02:53,104 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 20:02:53,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:53,104 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 20:02:53,108 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 20:02:53,304 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 20:02:53,305 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:53,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:53,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1100070146, now seen corresponding path program 2 times [2024-10-11 20:02:53,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:53,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080083344] [2024-10-11 20:02:53,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:02:53,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:02:53,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:53,308 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 20:02:53,310 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 20:02:53,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:02:53,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:02:53,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:02:53,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:53,424 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 20:02:53,665 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 20:02:53,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:54,173 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 20:02:54,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:54,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080083344] [2024-10-11 20:02:54,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080083344] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:54,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:54,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 20:02:54,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702631874] [2024-10-11 20:02:54,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:54,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 20:02:54,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:54,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 20:02:54,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 20:02:54,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-11 20:02:54,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 168 flow. Second operand has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 14 states have internal predecessors, (120), 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 20:02:54,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:54,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-11 20:02:54,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:56,168 INFO L124 PetriNetUnfolderBase]: 303/576 cut-off events. [2024-10-11 20:02:56,168 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-10-11 20:02:56,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 576 events. 303/576 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2565 event pairs, 264 based on Foata normal form. 6/476 useless extension candidates. Maximal degree in co-relation 1220. Up to 548 conditions per place. [2024-10-11 20:02:56,172 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 24 selfloop transitions, 31 changer transitions 0/58 dead transitions. [2024-10-11 20:02:56,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 58 transitions, 380 flow [2024-10-11 20:02:56,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 20:02:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 20:02:56,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 214 transitions. [2024-10-11 20:02:56,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2628992628992629 [2024-10-11 20:02:56,176 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 168 flow. Second operand 22 states and 214 transitions. [2024-10-11 20:02:56,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 58 transitions, 380 flow [2024-10-11 20:02:56,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:02:56,180 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 357 flow [2024-10-11 20:02:56,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=357, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2024-10-11 20:02:56,180 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2024-10-11 20:02:56,181 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 357 flow [2024-10-11 20:02:56,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 14 states have internal predecessors, (120), 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 20:02:56,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:02:56,181 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:02:56,184 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 20:02:56,384 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 20:02:56,385 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:02:56,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:02:56,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1225219567, now seen corresponding path program 1 times [2024-10-11 20:02:56,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:02:56,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408873260] [2024-10-11 20:02:56,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:02:56,386 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 20:02:56,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:02:56,390 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 20:02:56,393 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 20:02:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:02:56,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 20:02:56,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:02:56,463 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 20:02:56,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:02:56,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:02:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:02:57,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:02:57,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408873260] [2024-10-11 20:02:57,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408873260] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:02:57,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:02:57,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-11 20:02:57,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595332850] [2024-10-11 20:02:57,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:02:57,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:02:57,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:02:57,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:02:57,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:02:57,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:02:57,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 357 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 20:02:57,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:02:57,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:02:57,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:01,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:03:05,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:03:09,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:03:10,033 INFO L124 PetriNetUnfolderBase]: 637/1158 cut-off events. [2024-10-11 20:03:10,033 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-10-11 20:03:10,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2651 conditions, 1158 events. 637/1158 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5348 event pairs, 155 based on Foata normal form. 0/953 useless extension candidates. Maximal degree in co-relation 2599. Up to 289 conditions per place. [2024-10-11 20:03:10,038 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 99 selfloop transitions, 19 changer transitions 0/122 dead transitions. [2024-10-11 20:03:10,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 122 transitions, 749 flow [2024-10-11 20:03:10,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 20:03:10,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 20:03:10,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-10-11 20:03:10,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-10-11 20:03:10,040 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 357 flow. Second operand 7 states and 148 transitions. [2024-10-11 20:03:10,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 122 transitions, 749 flow [2024-10-11 20:03:10,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 122 transitions, 669 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-10-11 20:03:10,044 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 361 flow [2024-10-11 20:03:10,044 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=63, 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=7, PETRI_FLOW=361, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2024-10-11 20:03:10,044 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 36 predicate places. [2024-10-11 20:03:10,045 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 361 flow [2024-10-11 20:03:10,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 20:03:10,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:10,045 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:10,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-10-11 20:03:10,245 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 20:03:10,246 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:03:10,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:10,246 INFO L85 PathProgramCache]: Analyzing trace with hash 734288349, now seen corresponding path program 1 times [2024-10-11 20:03:10,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:10,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886749263] [2024-10-11 20:03:10,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:10,247 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 20:03:10,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:10,250 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 20:03:10,251 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 20:03:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:10,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 20:03:10,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:10,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:10,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2024-10-11 20:03:10,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:10,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:10,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886749263] [2024-10-11 20:03:10,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886749263] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:10,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:10,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 20:03:10,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866482741] [2024-10-11 20:03:10,840 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:10,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:03:10,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:10,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:03:10,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:03:10,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:03:10,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 361 flow. Second operand has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 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 20:03:10,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:10,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:03:10,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:15,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:03:16,171 INFO L124 PetriNetUnfolderBase]: 1121/2008 cut-off events. [2024-10-11 20:03:16,172 INFO L125 PetriNetUnfolderBase]: For 1270/1270 co-relation queries the response was YES. [2024-10-11 20:03:16,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5034 conditions, 2008 events. 1121/2008 cut-off events. For 1270/1270 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 10280 event pairs, 162 based on Foata normal form. 85/1809 useless extension candidates. Maximal degree in co-relation 4984. Up to 347 conditions per place. [2024-10-11 20:03:16,181 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 164 selfloop transitions, 29 changer transitions 0/197 dead transitions. [2024-10-11 20:03:16,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 197 transitions, 1124 flow [2024-10-11 20:03:16,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 20:03:16,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 20:03:16,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 263 transitions. [2024-10-11 20:03:16,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5923423423423423 [2024-10-11 20:03:16,182 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 361 flow. Second operand 12 states and 263 transitions. [2024-10-11 20:03:16,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 197 transitions, 1124 flow [2024-10-11 20:03:16,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 197 transitions, 1088 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-11 20:03:16,187 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 488 flow [2024-10-11 20:03:16,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=488, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2024-10-11 20:03:16,188 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 51 predicate places. [2024-10-11 20:03:16,188 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 488 flow [2024-10-11 20:03:16,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 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 20:03:16,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:16,188 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:16,191 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 (10)] Ended with exit code 0 [2024-10-11 20:03:16,391 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 20:03:16,392 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:03:16,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:16,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1516450343, now seen corresponding path program 1 times [2024-10-11 20:03:16,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:16,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183123865] [2024-10-11 20:03:16,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:16,392 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 20:03:16,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:16,395 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 20:03:16,403 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 20:03:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:16,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 20:03:16,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:16,474 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 20:03:16,475 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:16,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:16,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183123865] [2024-10-11 20:03:16,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183123865] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:16,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:16,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:03:16,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755740607] [2024-10-11 20:03:16,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:16,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:03:16,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:16,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:03:16,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:03:16,476 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:03:16,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 488 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 20:03:16,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:16,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:03:16,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:16,684 INFO L124 PetriNetUnfolderBase]: 1121/1996 cut-off events. [2024-10-11 20:03:16,684 INFO L125 PetriNetUnfolderBase]: For 2626/2626 co-relation queries the response was YES. [2024-10-11 20:03:16,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5523 conditions, 1996 events. 1121/1996 cut-off events. For 2626/2626 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 10473 event pairs, 589 based on Foata normal form. 6/1718 useless extension candidates. Maximal degree in co-relation 5466. Up to 1063 conditions per place. [2024-10-11 20:03:16,695 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 76 selfloop transitions, 5 changer transitions 2/87 dead transitions. [2024-10-11 20:03:16,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 87 transitions, 698 flow [2024-10-11 20:03:16,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:03:16,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:03:16,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-10-11 20:03:16,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5585585585585585 [2024-10-11 20:03:16,696 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 488 flow. Second operand 3 states and 62 transitions. [2024-10-11 20:03:16,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 87 transitions, 698 flow [2024-10-11 20:03:16,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 87 transitions, 657 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-11 20:03:16,706 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 455 flow [2024-10-11 20:03:16,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=455, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-10-11 20:03:16,707 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 50 predicate places. [2024-10-11 20:03:16,708 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 455 flow [2024-10-11 20:03:16,708 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 20:03:16,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:16,709 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:16,712 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 20:03:16,909 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 20:03:16,910 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:03:16,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:16,911 INFO L85 PathProgramCache]: Analyzing trace with hash 734741166, now seen corresponding path program 1 times [2024-10-11 20:03:16,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:16,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357662021] [2024-10-11 20:03:16,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:16,912 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 20:03:16,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:16,915 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 20:03:16,916 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 20:03:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:16,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 20:03:16,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:17,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 20:03:17,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 20:03:17,049 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:17,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357662021] [2024-10-11 20:03:17,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357662021] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:17,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:17,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2024-10-11 20:03:17,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962851421] [2024-10-11 20:03:17,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:17,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 20:03:17,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:17,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 20:03:17,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 20:03:17,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:03:17,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 455 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 20:03:17,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:17,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:03:17,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:17,360 INFO L124 PetriNetUnfolderBase]: 1211/2130 cut-off events. [2024-10-11 20:03:17,361 INFO L125 PetriNetUnfolderBase]: For 3517/3517 co-relation queries the response was YES. [2024-10-11 20:03:17,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5947 conditions, 2130 events. 1211/2130 cut-off events. For 3517/3517 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 10904 event pairs, 385 based on Foata normal form. 48/1876 useless extension candidates. Maximal degree in co-relation 5893. Up to 1212 conditions per place. [2024-10-11 20:03:17,371 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 92 selfloop transitions, 10 changer transitions 0/106 dead transitions. [2024-10-11 20:03:17,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 106 transitions, 783 flow [2024-10-11 20:03:17,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:03:17,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:03:17,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-10-11 20:03:17,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6148648648648649 [2024-10-11 20:03:17,373 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 455 flow. Second operand 4 states and 91 transitions. [2024-10-11 20:03:17,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 106 transitions, 783 flow [2024-10-11 20:03:17,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 106 transitions, 769 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-11 20:03:17,380 INFO L231 Difference]: Finished difference. Result has 87 places, 75 transitions, 505 flow [2024-10-11 20:03:17,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=505, PETRI_PLACES=87, PETRI_TRANSITIONS=75} [2024-10-11 20:03:17,381 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 51 predicate places. [2024-10-11 20:03:17,381 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 505 flow [2024-10-11 20:03:17,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 20:03:17,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:17,382 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:17,385 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 20:03:17,582 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 20:03:17,582 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:03:17,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:17,583 INFO L85 PathProgramCache]: Analyzing trace with hash 915747031, now seen corresponding path program 1 times [2024-10-11 20:03:17,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:17,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544023042] [2024-10-11 20:03:17,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:17,584 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 20:03:17,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:17,589 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 20:03:17,591 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 20:03:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:17,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 20:03:17,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:17,667 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 20:03:17,987 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:17,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:18,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:18,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544023042] [2024-10-11 20:03:18,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544023042] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:18,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:18,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 20:03:18,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17412423] [2024-10-11 20:03:18,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:18,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:03:18,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:18,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:03:18,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:03:18,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-11 20:03:18,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 75 transitions, 505 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 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 20:03:18,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:18,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-11 20:03:18,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:23,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:03:24,162 INFO L124 PetriNetUnfolderBase]: 1762/3118 cut-off events. [2024-10-11 20:03:24,163 INFO L125 PetriNetUnfolderBase]: For 5453/5453 co-relation queries the response was YES. [2024-10-11 20:03:24,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8800 conditions, 3118 events. 1762/3118 cut-off events. For 5453/5453 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17617 event pairs, 1148 based on Foata normal form. 44/2707 useless extension candidates. Maximal degree in co-relation 8744. Up to 2137 conditions per place. [2024-10-11 20:03:24,205 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 107 selfloop transitions, 29 changer transitions 9/148 dead transitions. [2024-10-11 20:03:24,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 148 transitions, 1064 flow [2024-10-11 20:03:24,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:03:24,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:03:24,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-10-11 20:03:24,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-10-11 20:03:24,207 INFO L175 Difference]: Start difference. First operand has 87 places, 75 transitions, 505 flow. Second operand 10 states and 172 transitions. [2024-10-11 20:03:24,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 148 transitions, 1064 flow [2024-10-11 20:03:24,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 148 transitions, 1056 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-10-11 20:03:24,216 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 669 flow [2024-10-11 20:03:24,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=669, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2024-10-11 20:03:24,217 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 65 predicate places. [2024-10-11 20:03:24,217 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 669 flow [2024-10-11 20:03:24,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 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 20:03:24,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:24,217 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:24,224 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 20:03:24,418 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 20:03:24,419 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:03:24,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:24,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1870932272, now seen corresponding path program 2 times [2024-10-11 20:03:24,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:24,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518113326] [2024-10-11 20:03:24,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:03:24,420 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 20:03:24,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:24,422 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 20:03:24,423 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 20:03:24,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:03:24,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:03:24,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 20:03:24,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:24,527 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 20:03:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 20:03:24,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 20:03:26,446 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:26,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518113326] [2024-10-11 20:03:26,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518113326] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:26,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:26,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-11 20:03:26,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380792487] [2024-10-11 20:03:26,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:26,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:03:26,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:26,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:03:26,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:03:26,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:03:26,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 669 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 20:03:26,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:26,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:03:26,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:31,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 20:03:35,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 20:03:39,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:03:40,106 INFO L124 PetriNetUnfolderBase]: 2459/4349 cut-off events. [2024-10-11 20:03:40,106 INFO L125 PetriNetUnfolderBase]: For 12055/12055 co-relation queries the response was YES. [2024-10-11 20:03:40,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13048 conditions, 4349 events. 2459/4349 cut-off events. For 12055/12055 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 24720 event pairs, 786 based on Foata normal form. 86/3799 useless extension candidates. Maximal degree in co-relation 12984. Up to 1063 conditions per place. [2024-10-11 20:03:40,133 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 121 selfloop transitions, 32 changer transitions 3/160 dead transitions. [2024-10-11 20:03:40,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 160 transitions, 1389 flow [2024-10-11 20:03:40,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 20:03:40,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 20:03:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-10-11 20:03:40,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5540540540540541 [2024-10-11 20:03:40,136 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 669 flow. Second operand 8 states and 164 transitions. [2024-10-11 20:03:40,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 160 transitions, 1389 flow [2024-10-11 20:03:40,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 160 transitions, 1376 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-11 20:03:40,157 INFO L231 Difference]: Finished difference. Result has 111 places, 92 transitions, 920 flow [2024-10-11 20:03:40,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=920, PETRI_PLACES=111, PETRI_TRANSITIONS=92} [2024-10-11 20:03:40,157 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 75 predicate places. [2024-10-11 20:03:40,157 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 92 transitions, 920 flow [2024-10-11 20:03:40,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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 20:03:40,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:40,158 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-11 20:03:40,161 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 20:03:40,358 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 20:03:40,359 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:03:40,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:40,359 INFO L85 PathProgramCache]: Analyzing trace with hash 310067324, now seen corresponding path program 3 times [2024-10-11 20:03:40,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:40,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358104145] [2024-10-11 20:03:40,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:03:40,360 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 20:03:40,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:40,363 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 20:03:40,363 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 20:03:40,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-11 20:03:40,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:03:40,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 20:03:40,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:40,559 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 20:03:41,557 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:41,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:44,264 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:44,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:44,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358104145] [2024-10-11 20:03:44,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358104145] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:44,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:44,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-11 20:03:44,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423917214] [2024-10-11 20:03:44,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:44,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 20:03:44,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:44,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 20:03:44,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-11 20:03:45,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-10-11 20:03:45,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 92 transitions, 920 flow. Second operand has 26 states, 26 states have (on average 8.76923076923077) internal successors, (228), 26 states have internal predecessors, (228), 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 20:03:45,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:45,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-10-11 20:03:45,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:06,684 INFO L124 PetriNetUnfolderBase]: 2471/4385 cut-off events. [2024-10-11 20:04:06,685 INFO L125 PetriNetUnfolderBase]: For 16514/16514 co-relation queries the response was YES. [2024-10-11 20:04:06,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14159 conditions, 4385 events. 2471/4385 cut-off events. For 16514/16514 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 25413 event pairs, 2213 based on Foata normal form. 12/3761 useless extension candidates. Maximal degree in co-relation 13909. Up to 4315 conditions per place. [2024-10-11 20:04:06,706 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 59 selfloop transitions, 66 changer transitions 0/128 dead transitions. [2024-10-11 20:04:06,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 128 transitions, 1458 flow [2024-10-11 20:04:06,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-11 20:04:06,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-11 20:04:06,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 423 transitions. [2024-10-11 20:04:06,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24853113983548766 [2024-10-11 20:04:06,709 INFO L175 Difference]: Start difference. First operand has 111 places, 92 transitions, 920 flow. Second operand 46 states and 423 transitions. [2024-10-11 20:04:06,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 128 transitions, 1458 flow [2024-10-11 20:04:06,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 128 transitions, 1368 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-10-11 20:04:06,776 INFO L231 Difference]: Finished difference. Result has 165 places, 128 transitions, 1304 flow [2024-10-11 20:04:06,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1304, PETRI_PLACES=165, PETRI_TRANSITIONS=128} [2024-10-11 20:04:06,777 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 129 predicate places. [2024-10-11 20:04:06,777 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 128 transitions, 1304 flow [2024-10-11 20:04:06,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.76923076923077) internal successors, (228), 26 states have internal predecessors, (228), 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 20:04:06,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:06,778 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:06,791 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 (15)] Forceful destruction successful, exit code 0 [2024-10-11 20:04:06,978 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 20:04:06,978 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:04:06,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:06,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1999095422, now seen corresponding path program 2 times [2024-10-11 20:04:06,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:06,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234474137] [2024-10-11 20:04:06,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:06,980 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 20:04:06,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:06,983 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 20:04:06,984 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 20:04:07,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:04:07,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:07,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:04:07,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:07,057 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 20:04:07,523 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 20:04:07,523 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:04:07,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:07,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234474137] [2024-10-11 20:04:07,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234474137] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:04:07,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:04:07,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:04:07,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190982504] [2024-10-11 20:04:07,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:07,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:04:07,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:07,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:04:07,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:04:07,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:04:07,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 128 transitions, 1304 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 20:04:07,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:07,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:04:07,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:08,225 INFO L124 PetriNetUnfolderBase]: 2233/3968 cut-off events. [2024-10-11 20:04:08,225 INFO L125 PetriNetUnfolderBase]: For 13466/13466 co-relation queries the response was YES. [2024-10-11 20:04:08,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11417 conditions, 3968 events. 2233/3968 cut-off events. For 13466/13466 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 22695 event pairs, 1993 based on Foata normal form. 149/3513 useless extension candidates. Maximal degree in co-relation 11311. Up to 3893 conditions per place. [2024-10-11 20:04:08,247 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 99 selfloop transitions, 23 changer transitions 0/126 dead transitions. [2024-10-11 20:04:08,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 126 transitions, 1508 flow [2024-10-11 20:04:08,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:04:08,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:04:08,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2024-10-11 20:04:08,250 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3716216216216216 [2024-10-11 20:04:08,250 INFO L175 Difference]: Start difference. First operand has 165 places, 128 transitions, 1304 flow. Second operand 4 states and 55 transitions. [2024-10-11 20:04:08,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 126 transitions, 1508 flow [2024-10-11 20:04:08,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 126 transitions, 1226 flow, removed 75 selfloop flow, removed 30 redundant places. [2024-10-11 20:04:08,271 INFO L231 Difference]: Finished difference. Result has 136 places, 126 transitions, 1028 flow [2024-10-11 20:04:08,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1028, PETRI_PLACES=136, PETRI_TRANSITIONS=126} [2024-10-11 20:04:08,272 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 100 predicate places. [2024-10-11 20:04:08,272 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 126 transitions, 1028 flow [2024-10-11 20:04:08,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 20:04:08,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:08,273 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:08,278 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 20:04:08,475 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 20:04:08,476 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:04:08,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash 73758177, now seen corresponding path program 1 times [2024-10-11 20:04:08,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:08,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510863897] [2024-10-11 20:04:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:08,477 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 20:04:08,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:08,479 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 20:04:08,480 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 20:04:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:08,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 20:04:08,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:09,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:09,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:09,567 INFO L349 Elim1Store]: treesize reduction 168, result has 2.9 percent of original size [2024-10-11 20:04:09,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 102 treesize of output 25 [2024-10-11 20:04:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:09,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:09,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510863897] [2024-10-11 20:04:09,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510863897] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:09,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:09,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2024-10-11 20:04:09,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474516224] [2024-10-11 20:04:09,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:09,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:04:09,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:09,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:04:09,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:04:09,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:04:09,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 126 transitions, 1028 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 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 20:04:09,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:09,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:04:09,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:10,368 INFO L124 PetriNetUnfolderBase]: 2233/3952 cut-off events. [2024-10-11 20:04:10,368 INFO L125 PetriNetUnfolderBase]: For 5526/5526 co-relation queries the response was YES. [2024-10-11 20:04:10,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10669 conditions, 3952 events. 2233/3952 cut-off events. For 5526/5526 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 21890 event pairs, 578 based on Foata normal form. 8/3356 useless extension candidates. Maximal degree in co-relation 10584. Up to 1804 conditions per place. [2024-10-11 20:04:10,386 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 113 selfloop transitions, 35 changer transitions 12/164 dead transitions. [2024-10-11 20:04:10,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 164 transitions, 1476 flow [2024-10-11 20:04:10,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:04:10,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:04:10,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-10-11 20:04:10,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-10-11 20:04:10,388 INFO L175 Difference]: Start difference. First operand has 136 places, 126 transitions, 1028 flow. Second operand 6 states and 110 transitions. [2024-10-11 20:04:10,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 164 transitions, 1476 flow [2024-10-11 20:04:10,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 164 transitions, 1408 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-10-11 20:04:10,402 INFO L231 Difference]: Finished difference. Result has 139 places, 126 transitions, 1048 flow [2024-10-11 20:04:10,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1048, PETRI_PLACES=139, PETRI_TRANSITIONS=126} [2024-10-11 20:04:10,403 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 103 predicate places. [2024-10-11 20:04:10,403 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 126 transitions, 1048 flow [2024-10-11 20:04:10,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 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 20:04:10,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:10,404 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:10,409 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 20:04:10,604 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 20:04:10,605 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:04:10,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:10,605 INFO L85 PathProgramCache]: Analyzing trace with hash 252091548, now seen corresponding path program 2 times [2024-10-11 20:04:10,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:10,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708527675] [2024-10-11 20:04:10,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:10,606 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 20:04:10,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:10,607 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 20:04:10,608 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 20:04:10,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:04:10,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:10,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 20:04:10,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 20:04:11,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 20:04:11,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:11,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708527675] [2024-10-11 20:04:11,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708527675] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:11,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:11,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-10-11 20:04:11,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044460374] [2024-10-11 20:04:11,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:11,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:04:11,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:11,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:04:11,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:04:11,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:04:11,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 126 transitions, 1048 flow. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 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 20:04:11,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:11,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:04:11,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:12,754 INFO L124 PetriNetUnfolderBase]: 1971/3514 cut-off events. [2024-10-11 20:04:12,754 INFO L125 PetriNetUnfolderBase]: For 5320/5320 co-relation queries the response was YES. [2024-10-11 20:04:12,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9437 conditions, 3514 events. 1971/3514 cut-off events. For 5320/5320 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 19415 event pairs, 1637 based on Foata normal form. 33/3007 useless extension candidates. Maximal degree in co-relation 9352. Up to 2683 conditions per place. [2024-10-11 20:04:12,813 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 67 selfloop transitions, 45 changer transitions 32/148 dead transitions. [2024-10-11 20:04:12,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 148 transitions, 1354 flow [2024-10-11 20:04:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 20:04:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 20:04:12,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-10-11 20:04:12,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-10-11 20:04:12,815 INFO L175 Difference]: Start difference. First operand has 139 places, 126 transitions, 1048 flow. Second operand 7 states and 111 transitions. [2024-10-11 20:04:12,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 148 transitions, 1354 flow [2024-10-11 20:04:12,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 148 transitions, 1268 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-10-11 20:04:12,848 INFO L231 Difference]: Finished difference. Result has 141 places, 116 transitions, 932 flow [2024-10-11 20:04:12,848 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=932, PETRI_PLACES=141, PETRI_TRANSITIONS=116} [2024-10-11 20:04:12,849 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 105 predicate places. [2024-10-11 20:04:12,849 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 116 transitions, 932 flow [2024-10-11 20:04:12,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 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 20:04:12,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:12,852 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:12,860 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 (18)] Forceful destruction successful, exit code 0 [2024-10-11 20:04:13,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 20:04:13,053 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:04:13,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:13,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1587267337, now seen corresponding path program 3 times [2024-10-11 20:04:13,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:13,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219656306] [2024-10-11 20:04:13,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:04:13,055 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 20:04:13,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:13,056 INFO L229 MonitoredProcess]: Starting monitored process 19 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 20:04:13,058 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 (19)] Waiting until timeout for monitored process [2024-10-11 20:04:13,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 20:04:13,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:13,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 20:04:13,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:14,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:14,721 INFO L349 Elim1Store]: treesize reduction 156, result has 3.1 percent of original size [2024-10-11 20:04:14,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 103 treesize of output 25 [2024-10-11 20:04:15,669 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:15,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:15,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219656306] [2024-10-11 20:04:15,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219656306] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:15,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:15,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-10-11 20:04:15,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470619095] [2024-10-11 20:04:15,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:15,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 20:04:15,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:15,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 20:04:15,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-10-11 20:04:15,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:04:15,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 116 transitions, 932 flow. Second operand has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 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 20:04:15,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:15,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:04:15,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:22,017 INFO L124 PetriNetUnfolderBase]: 3965/6896 cut-off events. [2024-10-11 20:04:22,017 INFO L125 PetriNetUnfolderBase]: For 9784/9784 co-relation queries the response was YES. [2024-10-11 20:04:22,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18620 conditions, 6896 events. 3965/6896 cut-off events. For 9784/9784 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 41435 event pairs, 640 based on Foata normal form. 9/5855 useless extension candidates. Maximal degree in co-relation 18532. Up to 1225 conditions per place. [2024-10-11 20:04:22,050 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 241 selfloop transitions, 66 changer transitions 39/350 dead transitions. [2024-10-11 20:04:22,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 350 transitions, 2620 flow [2024-10-11 20:04:22,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 20:04:22,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-11 20:04:22,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 402 transitions. [2024-10-11 20:04:22,057 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5432432432432432 [2024-10-11 20:04:22,057 INFO L175 Difference]: Start difference. First operand has 141 places, 116 transitions, 932 flow. Second operand 20 states and 402 transitions. [2024-10-11 20:04:22,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 350 transitions, 2620 flow [2024-10-11 20:04:22,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 350 transitions, 2468 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-10-11 20:04:22,082 INFO L231 Difference]: Finished difference. Result has 152 places, 157 transitions, 1473 flow [2024-10-11 20:04:22,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1473, PETRI_PLACES=152, PETRI_TRANSITIONS=157} [2024-10-11 20:04:22,082 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 116 predicate places. [2024-10-11 20:04:22,082 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 157 transitions, 1473 flow [2024-10-11 20:04:22,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 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 20:04:22,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:22,083 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:22,091 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 (19)] Ended with exit code 0 [2024-10-11 20:04:22,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 20:04:22,284 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 20:04:22,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:22,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1613694269, now seen corresponding path program 4 times [2024-10-11 20:04:22,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:22,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763483623] [2024-10-11 20:04:22,284 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 20:04:22,285 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 20:04:22,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:22,287 INFO L229 MonitoredProcess]: Starting monitored process 20 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 20:04:22,289 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 (20)] Waiting until timeout for monitored process [2024-10-11 20:04:22,388 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 20:04:22,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:22,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:04:22,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:23,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:23,237 INFO L349 Elim1Store]: treesize reduction 168, result has 2.9 percent of original size [2024-10-11 20:04:23,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 102 treesize of output 25 [2024-10-11 20:04:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-11 20:04:23,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:23,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763483623] [2024-10-11 20:04:23,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763483623] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:23,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:23,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2024-10-11 20:04:23,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863824193] [2024-10-11 20:04:23,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:23,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 20:04:23,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:23,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 20:04:23,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-11 20:04:23,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-10-11 20:04:23,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 157 transitions, 1473 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 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 20:04:23,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:23,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-10-11 20:04:23,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand