./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:40:58,600 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:40:58,661 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:40:58,665 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:40:58,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:40:58,682 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:40:58,683 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:40:58,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:40:58,684 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:40:58,685 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:40:58,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:40:58,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:40:58,687 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:40:58,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:40:58,688 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:40:58,688 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:40:58,688 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:40:58,688 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:40:58,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:40:58,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:40:58,690 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:40:58,690 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:40:58,690 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:40:58,690 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:40:58,691 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:40:58,691 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:40:58,691 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:40:58,692 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:40:58,692 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:40:58,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:40:58,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:40:58,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:40:58,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:40:58,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:40:58,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:40:58,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:40:58,694 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:40:58,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:40:58,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:40:58,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:40:58,695 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:40:58,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:40:58,695 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2024-10-13 12:40:58,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:40:58,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:40:58,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:40:58,933 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:40:58,933 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:40:58,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-10-13 12:41:00,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:41:00,401 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:41:00,401 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-10-13 12:41:00,410 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea629e582/2744209de55b4dada6491a69a23b6e63/FLAGb3f86c8cb [2024-10-13 12:41:00,801 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea629e582/2744209de55b4dada6491a69a23b6e63 [2024-10-13 12:41:00,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:41:00,805 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:41:00,807 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:41:00,808 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:41:00,812 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:41:00,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:41:00" (1/1) ... [2024-10-13 12:41:00,814 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473cf320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:00, skipping insertion in model container [2024-10-13 12:41:00,814 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:41:00" (1/1) ... [2024-10-13 12:41:00,836 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:41:01,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:41:01,046 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) [2024-10-13 12:41:01,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6638128d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:01, skipping insertion in model container [2024-10-13 12:41:01,047 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:41:01,047 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-13 12:41:01,048 INFO L158 Benchmark]: Toolchain (without parser) took 243.29ms. Allocated memory is still 159.4MB. Free memory was 92.7MB in the beginning and 127.3MB in the end (delta: -34.6MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2024-10-13 12:41:01,049 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 79.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:41:01,049 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.56ms. Allocated memory is still 159.4MB. Free memory was 92.4MB in the beginning and 127.3MB in the end (delta: -34.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2024-10-13 12:41:01,050 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 79.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.56ms. Allocated memory is still 159.4MB. Free memory was 92.4MB in the beginning and 127.3MB in the end (delta: -34.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 116]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:41:03,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:41:03,180 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-13 12:41:03,185 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:41:03,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:41:03,219 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:41:03,220 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:41:03,220 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:41:03,221 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:41:03,221 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:41:03,221 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:41:03,222 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:41:03,222 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:41:03,223 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:41:03,223 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:41:03,223 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:41:03,224 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:41:03,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:41:03,224 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:41:03,225 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:41:03,225 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:41:03,226 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:41:03,226 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:41:03,226 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:41:03,226 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:41:03,227 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-13 12:41:03,227 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:41:03,227 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-13 12:41:03,228 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:41:03,228 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:41:03,228 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:41:03,228 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:41:03,229 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:41:03,229 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:41:03,229 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:41:03,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:41:03,230 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:41:03,230 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:41:03,230 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-13 12:41:03,231 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-13 12:41:03,231 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:41:03,231 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:41:03,232 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:41:03,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:41:03,232 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-13 12:41:03,232 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2024-10-13 12:41:03,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:41:03,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:41:03,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:41:03,609 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:41:03,613 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:41:03,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-10-13 12:41:05,395 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:41:05,691 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:41:05,693 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-10-13 12:41:05,707 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55587d868/aadd4665e6c3468882f65d11e8ff8187/FLAG85cf2698e [2024-10-13 12:41:05,729 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55587d868/aadd4665e6c3468882f65d11e8ff8187 [2024-10-13 12:41:05,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:41:05,737 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:41:05,738 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:41:05,740 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:41:05,745 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:41:05,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:41:05" (1/1) ... [2024-10-13 12:41:05,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17476a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:05, skipping insertion in model container [2024-10-13 12:41:05,748 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:41:05" (1/1) ... [2024-10-13 12:41:05,776 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:41:06,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:41:06,070 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-13 12:41:06,077 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:41:06,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:41:06,108 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:41:06,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:41:06,151 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:41:06,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:06 WrapperNode [2024-10-13 12:41:06,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:41:06,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:41:06,154 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:41:06,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:41:06,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:06" (1/1) ... [2024-10-13 12:41:06,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:06" (1/1) ... [2024-10-13 12:41:06,226 INFO L138 Inliner]: procedures = 27, calls = 41, calls flagged for inlining = 17, calls inlined = 23, statements flattened = 266 [2024-10-13 12:41:06,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:41:06,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:41:06,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:41:06,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:41:06,243 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:06" (1/1) ... [2024-10-13 12:41:06,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:06" (1/1) ... [2024-10-13 12:41:06,253 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:06" (1/1) ... [2024-10-13 12:41:06,290 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-13 12:41:06,294 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:06" (1/1) ... [2024-10-13 12:41:06,295 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:06" (1/1) ... [2024-10-13 12:41:06,313 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:06" (1/1) ... [2024-10-13 12:41:06,323 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:06" (1/1) ... [2024-10-13 12:41:06,327 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:06" (1/1) ... [2024-10-13 12:41:06,330 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:06" (1/1) ... [2024-10-13 12:41:06,335 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:41:06,336 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:41:06,338 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:41:06,338 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:41:06,339 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:06" (1/1) ... [2024-10-13 12:41:06,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:41:06,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:41:06,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 12:41:06,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 12:41:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:41:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-13 12:41:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-13 12:41:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-13 12:41:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-13 12:41:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:41:06,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:41:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:41:06,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:41:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 12:41:06,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 12:41:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:41:06,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:41:06,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 12:41:06,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:41:06,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:41:06,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-13 12:41:06,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-13 12:41:06,465 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:41:06,664 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:41:06,666 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:41:07,449 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:41:07,450 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:41:07,851 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:41:07,851 INFO L314 CfgBuilder]: Removed 8 assume(true) statements. [2024-10-13 12:41:07,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:41:07 BoogieIcfgContainer [2024-10-13 12:41:07,852 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:41:07,854 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:41:07,854 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:41:07,857 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:41:07,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:41:05" (1/3) ... [2024-10-13 12:41:07,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b8a6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:41:07, skipping insertion in model container [2024-10-13 12:41:07,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:06" (2/3) ... [2024-10-13 12:41:07,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b8a6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:41:07, skipping insertion in model container [2024-10-13 12:41:07,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:41:07" (3/3) ... [2024-10-13 12:41:07,861 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2024-10-13 12:41:07,880 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:41:07,881 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-10-13 12:41:07,881 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:41:07,964 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 12:41:07,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 79 transitions, 179 flow [2024-10-13 12:41:08,029 INFO L124 PetriNetUnfolderBase]: 11/76 cut-off events. [2024-10-13 12:41:08,030 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 12:41:08,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 11/76 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 221 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2024-10-13 12:41:08,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 79 transitions, 179 flow [2024-10-13 12:41:08,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 75 transitions, 168 flow [2024-10-13 12:41:08,048 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:41:08,055 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;@76f21138, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:41:08,056 INFO L334 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2024-10-13 12:41:08,059 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:41:08,059 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-13 12:41:08,059 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:41:08,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:41:08,060 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:41:08,061 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-13 12:41:08,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:41:08,066 INFO L85 PathProgramCache]: Analyzing trace with hash 861111, now seen corresponding path program 1 times [2024-10-13 12:41:08,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:41:08,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207320593] [2024-10-13 12:41:08,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:41:08,092 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 [2024-10-13 12:41:08,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:41:08,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:41:08,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-13 12:41:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:41:08,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:41:08,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:41:08,242 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 [2024-10-13 12:41:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:08,258 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:41:08,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:41:08,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207320593] [2024-10-13 12:41:08,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207320593] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:41:08,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:41:08,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:41:08,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658767240] [2024-10-13 12:41:08,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:41:08,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:41:08,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:41:08,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:41:08,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:41:08,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 79 [2024-10-13 12:41:08,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-10-13 12:41:08,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:41:08,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 79 [2024-10-13 12:41:08,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:41:09,428 INFO L124 PetriNetUnfolderBase]: 4704/6958 cut-off events. [2024-10-13 12:41:09,428 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2024-10-13 12:41:09,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13675 conditions, 6958 events. 4704/6958 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 39844 event pairs, 3616 based on Foata normal form. 544/5557 useless extension candidates. Maximal degree in co-relation 12994. Up to 6434 conditions per place. [2024-10-13 12:41:09,486 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 45 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-10-13 12:41:09,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 248 flow [2024-10-13 12:41:09,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:41:09,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:41:09,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-10-13 12:41:09,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.540084388185654 [2024-10-13 12:41:09,500 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 168 flow. Second operand 3 states and 128 transitions. [2024-10-13 12:41:09,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 248 flow [2024-10-13 12:41:09,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 236 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 12:41:09,510 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 146 flow [2024-10-13 12:41:09,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-10-13 12:41:09,515 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2024-10-13 12:41:09,516 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 146 flow [2024-10-13 12:41:09,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-10-13 12:41:09,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:41:09,516 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:41:09,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-13 12:41:09,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:41:09,717 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-13 12:41:09,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:41:09,718 INFO L85 PathProgramCache]: Analyzing trace with hash 861112, now seen corresponding path program 1 times [2024-10-13 12:41:09,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:41:09,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636405876] [2024-10-13 12:41:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:41:09,719 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 [2024-10-13 12:41:09,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:41:09,722 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:41:09,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-13 12:41:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:41:09,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 12:41:09,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:41:09,862 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 [2024-10-13 12:41:09,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:09,947 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:41:09,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:41:09,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636405876] [2024-10-13 12:41:09,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636405876] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:41:09,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:41:09,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:41:09,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97348923] [2024-10-13 12:41:09,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:41:09,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:41:09,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:41:09,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:41:09,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:41:10,101 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 79 [2024-10-13 12:41:10,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-10-13 12:41:10,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:41:10,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 79 [2024-10-13 12:41:10,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:41:11,110 INFO L124 PetriNetUnfolderBase]: 4706/6964 cut-off events. [2024-10-13 12:41:11,110 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-10-13 12:41:11,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13508 conditions, 6964 events. 4706/6964 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 39857 event pairs, 3616 based on Foata normal form. 0/5017 useless extension candidates. Maximal degree in co-relation 13472. Up to 6443 conditions per place. [2024-10-13 12:41:11,173 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 48 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-10-13 12:41:11,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 74 transitions, 270 flow [2024-10-13 12:41:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:41:11,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:41:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-10-13 12:41:11,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49683544303797467 [2024-10-13 12:41:11,180 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 146 flow. Second operand 4 states and 157 transitions. [2024-10-13 12:41:11,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 74 transitions, 270 flow [2024-10-13 12:41:11,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:41:11,183 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 198 flow [2024-10-13 12:41:11,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-10-13 12:41:11,184 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2024-10-13 12:41:11,184 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 198 flow [2024-10-13 12:41:11,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-10-13 12:41:11,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:41:11,185 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-13 12:41:11,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-13 12:41:11,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:41:11,386 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-13 12:41:11,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:41:11,387 INFO L85 PathProgramCache]: Analyzing trace with hash 827556557, now seen corresponding path program 1 times [2024-10-13 12:41:11,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:41:11,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254983959] [2024-10-13 12:41:11,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:41:11,390 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 [2024-10-13 12:41:11,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:41:11,395 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:41:11,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-13 12:41:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:41:11,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:41:11,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:41:11,492 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 [2024-10-13 12:41:11,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:11,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:41:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:11,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:41:11,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254983959] [2024-10-13 12:41:11,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254983959] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:41:11,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:41:11,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-13 12:41:11,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922385903] [2024-10-13 12:41:11,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:41:11,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:41:11,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:41:11,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:41:11,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:41:12,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 79 [2024-10-13 12:41:12,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 198 flow. Second operand has 10 states, 10 states have (on average 26.0) internal successors, (260), 10 states have internal predecessors, (260), 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) [2024-10-13 12:41:12,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:41:12,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 79 [2024-10-13 12:41:12,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:41:14,521 INFO L124 PetriNetUnfolderBase]: 4712/6982 cut-off events. [2024-10-13 12:41:14,522 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-10-13 12:41:14,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13586 conditions, 6982 events. 4712/6982 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 39994 event pairs, 3616 based on Foata normal form. 0/5033 useless extension candidates. Maximal degree in co-relation 13483. Up to 6446 conditions per place. [2024-10-13 12:41:14,589 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 48 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2024-10-13 12:41:14,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 92 transitions, 422 flow [2024-10-13 12:41:14,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:41:14,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:41:14,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2024-10-13 12:41:14,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41645569620253164 [2024-10-13 12:41:14,594 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 198 flow. Second operand 10 states and 329 transitions. [2024-10-13 12:41:14,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 92 transitions, 422 flow [2024-10-13 12:41:14,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 92 transitions, 422 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:41:14,597 INFO L231 Difference]: Finished difference. Result has 82 places, 92 transitions, 360 flow [2024-10-13 12:41:14,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=360, PETRI_PLACES=82, PETRI_TRANSITIONS=92} [2024-10-13 12:41:14,599 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 8 predicate places. [2024-10-13 12:41:14,599 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 92 transitions, 360 flow [2024-10-13 12:41:14,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.0) internal successors, (260), 10 states have internal predecessors, (260), 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) [2024-10-13 12:41:14,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:41:14,600 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:41:14,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-13 12:41:14,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:41:14,802 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-13 12:41:14,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:41:14,804 INFO L85 PathProgramCache]: Analyzing trace with hash 716547749, now seen corresponding path program 1 times [2024-10-13 12:41:14,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:41:14,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630879306] [2024-10-13 12:41:14,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:41:14,807 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 [2024-10-13 12:41:14,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:41:14,810 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:41:14,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-13 12:41:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:41:14,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:41:14,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:41:14,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:14,927 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:41:14,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:41:14,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630879306] [2024-10-13 12:41:14,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630879306] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:41:14,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:41:14,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:41:14,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701575186] [2024-10-13 12:41:14,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:41:14,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:41:14,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:41:14,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:41:14,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:41:14,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 79 [2024-10-13 12:41:14,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 92 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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) [2024-10-13 12:41:14,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:41:14,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 79 [2024-10-13 12:41:14,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:41:15,718 INFO L124 PetriNetUnfolderBase]: 4712/6993 cut-off events. [2024-10-13 12:41:15,718 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-10-13 12:41:15,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13680 conditions, 6993 events. 4712/6993 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 40049 event pairs, 3616 based on Foata normal form. 4/5053 useless extension candidates. Maximal degree in co-relation 13596. Up to 6461 conditions per place. [2024-10-13 12:41:15,801 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 78 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2024-10-13 12:41:15,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 102 transitions, 592 flow [2024-10-13 12:41:15,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:41:15,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:41:15,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-10-13 12:41:15,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.509493670886076 [2024-10-13 12:41:15,803 INFO L175 Difference]: Start difference. First operand has 82 places, 92 transitions, 360 flow. Second operand 4 states and 161 transitions. [2024-10-13 12:41:15,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 102 transitions, 592 flow [2024-10-13 12:41:15,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 102 transitions, 509 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-10-13 12:41:15,808 INFO L231 Difference]: Finished difference. Result has 82 places, 92 transitions, 313 flow [2024-10-13 12:41:15,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=82, PETRI_TRANSITIONS=92} [2024-10-13 12:41:15,809 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 8 predicate places. [2024-10-13 12:41:15,809 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 92 transitions, 313 flow [2024-10-13 12:41:15,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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) [2024-10-13 12:41:15,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:41:15,810 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:41:15,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-13 12:41:16,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:41:16,012 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-13 12:41:16,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:41:16,013 INFO L85 PathProgramCache]: Analyzing trace with hash -2065927366, now seen corresponding path program 1 times [2024-10-13 12:41:16,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:41:16,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954538068] [2024-10-13 12:41:16,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:41:16,014 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 [2024-10-13 12:41:16,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:41:16,019 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:41:16,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-13 12:41:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:41:16,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 12:41:16,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:41:16,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-13 12:41:16,169 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 [2024-10-13 12:41:16,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:41:16,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-13 12:41:16,379 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-13 12:41:16,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-13 12:41:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:16,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:41:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:17,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:41:17,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954538068] [2024-10-13 12:41:17,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954538068] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:41:17,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:41:17,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-13 12:41:17,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172326636] [2024-10-13 12:41:17,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:41:17,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:41:17,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:41:17,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:41:17,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:41:18,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2024-10-13 12:41:18,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 92 transitions, 313 flow. Second operand has 12 states, 12 states have (on average 21.333333333333332) internal successors, (256), 12 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:41:18,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:41:18,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2024-10-13 12:41:18,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:41:25,790 INFO L124 PetriNetUnfolderBase]: 21885/31890 cut-off events. [2024-10-13 12:41:25,790 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2024-10-13 12:41:25,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62324 conditions, 31890 events. 21885/31890 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 1244. Compared 212754 event pairs, 7283 based on Foata normal form. 0/23353 useless extension candidates. Maximal degree in co-relation 62257. Up to 5668 conditions per place. [2024-10-13 12:41:26,046 INFO L140 encePairwiseOnDemand]: 66/79 looper letters, 247 selfloop transitions, 56 changer transitions 0/319 dead transitions. [2024-10-13 12:41:26,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 319 transitions, 1513 flow [2024-10-13 12:41:26,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 12:41:26,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 12:41:26,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 765 transitions. [2024-10-13 12:41:26,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42102366538249864 [2024-10-13 12:41:26,051 INFO L175 Difference]: Start difference. First operand has 82 places, 92 transitions, 313 flow. Second operand 23 states and 765 transitions. [2024-10-13 12:41:26,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 319 transitions, 1513 flow [2024-10-13 12:41:26,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 319 transitions, 1509 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-13 12:41:26,059 INFO L231 Difference]: Finished difference. Result has 104 places, 124 transitions, 584 flow [2024-10-13 12:41:26,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=584, PETRI_PLACES=104, PETRI_TRANSITIONS=124} [2024-10-13 12:41:26,062 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2024-10-13 12:41:26,062 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 124 transitions, 584 flow [2024-10-13 12:41:26,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.333333333333332) internal successors, (256), 12 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:41:26,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:41:26,063 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:41:26,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-13 12:41:26,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:41:26,264 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-13 12:41:26,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:41:26,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2065927367, now seen corresponding path program 1 times [2024-10-13 12:41:26,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:41:26,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783144443] [2024-10-13 12:41:26,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:41:26,266 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 [2024-10-13 12:41:26,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:41:26,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:41:26,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-13 12:41:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:41:26,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:41:26,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:41:26,344 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 [2024-10-13 12:41:26,368 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-13 12:41:26,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-13 12:41:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:41:26,408 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:41:26,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:41:26,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783144443] [2024-10-13 12:41:26,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783144443] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:41:26,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:41:26,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:41:26,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57334456] [2024-10-13 12:41:26,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:41:26,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:41:26,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:41:26,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:41:26,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:41:26,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 79 [2024-10-13 12:41:26,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 124 transitions, 584 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:41:26,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:41:26,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 79 [2024-10-13 12:41:26,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:41:29,985 INFO L124 PetriNetUnfolderBase]: 24822/34605 cut-off events. [2024-10-13 12:41:29,985 INFO L125 PetriNetUnfolderBase]: For 6891/8227 co-relation queries the response was YES. [2024-10-13 12:41:30,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74750 conditions, 34605 events. 24822/34605 cut-off events. For 6891/8227 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 202023 event pairs, 19404 based on Foata normal form. 1109/27875 useless extension candidates. Maximal degree in co-relation 74466. Up to 33813 conditions per place. [2024-10-13 12:41:30,282 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 88 selfloop transitions, 19 changer transitions 0/118 dead transitions. [2024-10-13 12:41:30,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 118 transitions, 786 flow [2024-10-13 12:41:30,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:41:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:41:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-10-13 12:41:30,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34430379746835443 [2024-10-13 12:41:30,287 INFO L175 Difference]: Start difference. First operand has 104 places, 124 transitions, 584 flow. Second operand 5 states and 136 transitions. [2024-10-13 12:41:30,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 118 transitions, 786 flow [2024-10-13 12:41:30,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 118 transitions, 738 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-10-13 12:41:30,323 INFO L231 Difference]: Finished difference. Result has 99 places, 118 transitions, 562 flow [2024-10-13 12:41:30,324 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=562, PETRI_PLACES=99, PETRI_TRANSITIONS=118} [2024-10-13 12:41:30,325 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2024-10-13 12:41:30,326 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 118 transitions, 562 flow [2024-10-13 12:41:30,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:41:30,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:41:30,327 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-13 12:41:30,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-13 12:41:30,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:41:30,529 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-13 12:41:30,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:41:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash -263505780, now seen corresponding path program 2 times [2024-10-13 12:41:30,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:41:30,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064793207] [2024-10-13 12:41:30,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:41:30,530 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 [2024-10-13 12:41:30,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:41:30,532 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:41:30,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-13 12:41:30,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:41:30,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:41:30,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 12:41:30,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:41:30,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-13 12:41:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:30,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:41:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:31,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:41:31,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064793207] [2024-10-13 12:41:31,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064793207] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:41:31,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:41:31,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:41:31,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576234784] [2024-10-13 12:41:31,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:41:31,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:41:31,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:41:31,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:41:31,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:41:32,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 79 [2024-10-13 12:41:32,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 118 transitions, 562 flow. Second operand has 14 states, 14 states have (on average 26.571428571428573) internal successors, (372), 14 states have internal predecessors, (372), 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) [2024-10-13 12:41:32,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:41:32,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 79 [2024-10-13 12:41:32,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:41:35,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-13 12:41:37,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-13 12:41:43,088 INFO L124 PetriNetUnfolderBase]: 18542/26689 cut-off events. [2024-10-13 12:41:43,088 INFO L125 PetriNetUnfolderBase]: For 5216/5414 co-relation queries the response was YES. [2024-10-13 12:41:43,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57623 conditions, 26689 events. 18542/26689 cut-off events. For 5216/5414 co-relation queries the response was YES. Maximal size of possible extension queue 1051. Compared 173673 event pairs, 14088 based on Foata normal form. 30/19944 useless extension candidates. Maximal degree in co-relation 56948. Up to 25200 conditions per place. [2024-10-13 12:41:43,251 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 63 selfloop transitions, 103 changer transitions 0/178 dead transitions. [2024-10-13 12:41:43,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 178 transitions, 1320 flow [2024-10-13 12:41:43,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 12:41:43,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 12:41:43,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 671 transitions. [2024-10-13 12:41:43,254 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3860759493670886 [2024-10-13 12:41:43,254 INFO L175 Difference]: Start difference. First operand has 99 places, 118 transitions, 562 flow. Second operand 22 states and 671 transitions. [2024-10-13 12:41:43,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 178 transitions, 1320 flow [2024-10-13 12:41:43,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 178 transitions, 1277 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:41:43,283 INFO L231 Difference]: Finished difference. Result has 123 places, 178 transitions, 1241 flow [2024-10-13 12:41:43,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1241, PETRI_PLACES=123, PETRI_TRANSITIONS=178} [2024-10-13 12:41:43,284 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 49 predicate places. [2024-10-13 12:41:43,284 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 178 transitions, 1241 flow [2024-10-13 12:41:43,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 26.571428571428573) internal successors, (372), 14 states have internal predecessors, (372), 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) [2024-10-13 12:41:43,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:41:43,285 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:41:43,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-13 12:41:43,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:41:43,486 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-13 12:41:43,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:41:43,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1099141470, now seen corresponding path program 1 times [2024-10-13 12:41:43,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:41:43,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434947559] [2024-10-13 12:41:43,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:41:43,487 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 [2024-10-13 12:41:43,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:41:43,488 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:41:43,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-13 12:41:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:41:43,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:41:43,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:41:43,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:43,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:41:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:41:43,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:41:43,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434947559] [2024-10-13 12:41:43,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434947559] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:41:43,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:41:43,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-10-13 12:41:43,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377675508] [2024-10-13 12:41:43,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:41:43,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:41:43,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:41:43,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:41:43,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:41:44,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-10-13 12:41:44,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 178 transitions, 1241 flow. Second operand has 14 states, 14 states have (on average 27.428571428571427) internal successors, (384), 14 states have internal predecessors, (384), 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) [2024-10-13 12:41:44,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:41:44,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-10-13 12:41:44,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:41:46,328 INFO L124 PetriNetUnfolderBase]: 13581/19793 cut-off events. [2024-10-13 12:41:46,329 INFO L125 PetriNetUnfolderBase]: For 4363/4555 co-relation queries the response was YES. [2024-10-13 12:41:46,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43300 conditions, 19793 events. 13581/19793 cut-off events. For 4363/4555 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 123834 event pairs, 9732 based on Foata normal form. 0/14813 useless extension candidates. Maximal degree in co-relation 43090. Up to 15238 conditions per place. [2024-10-13 12:41:46,593 INFO L140 encePairwiseOnDemand]: 69/79 looper letters, 175 selfloop transitions, 78 changer transitions 0/266 dead transitions. [2024-10-13 12:41:46,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 266 transitions, 2175 flow [2024-10-13 12:41:46,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:41:46,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:41:46,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 376 transitions. [2024-10-13 12:41:46,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4759493670886076 [2024-10-13 12:41:46,597 INFO L175 Difference]: Start difference. First operand has 123 places, 178 transitions, 1241 flow. Second operand 10 states and 376 transitions. [2024-10-13 12:41:46,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 266 transitions, 2175 flow [2024-10-13 12:41:46,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 266 transitions, 1827 flow, removed 114 selfloop flow, removed 9 redundant places. [2024-10-13 12:41:46,638 INFO L231 Difference]: Finished difference. Result has 128 places, 209 transitions, 1534 flow [2024-10-13 12:41:46,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1534, PETRI_PLACES=128, PETRI_TRANSITIONS=209} [2024-10-13 12:41:46,639 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 54 predicate places. [2024-10-13 12:41:46,640 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 209 transitions, 1534 flow [2024-10-13 12:41:46,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 27.428571428571427) internal successors, (384), 14 states have internal predecessors, (384), 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) [2024-10-13 12:41:46,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:41:46,640 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:41:46,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-13 12:41:46,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:41:46,841 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-13 12:41:46,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:41:46,842 INFO L85 PathProgramCache]: Analyzing trace with hash 840097945, now seen corresponding path program 1 times [2024-10-13 12:41:46,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:41:46,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856107668] [2024-10-13 12:41:46,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:41:46,843 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 [2024-10-13 12:41:46,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:41:46,846 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:41:46,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-13 12:41:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:41:46,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:41:46,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:41:46,931 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 [2024-10-13 12:41:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:41:46,960 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:41:46,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:41:46,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856107668] [2024-10-13 12:41:46,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856107668] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:41:46,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:41:46,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:41:46,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307102046] [2024-10-13 12:41:46,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:41:46,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:41:46,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:41:46,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:41:46,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:41:47,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 79 [2024-10-13 12:41:47,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 209 transitions, 1534 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2024-10-13 12:41:47,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:41:47,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 79 [2024-10-13 12:41:47,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:41:48,585 INFO L124 PetriNetUnfolderBase]: 9313/13972 cut-off events. [2024-10-13 12:41:48,585 INFO L125 PetriNetUnfolderBase]: For 5275/5531 co-relation queries the response was YES. [2024-10-13 12:41:48,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32485 conditions, 13972 events. 9313/13972 cut-off events. For 5275/5531 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 88338 event pairs, 6917 based on Foata normal form. 0/11457 useless extension candidates. Maximal degree in co-relation 32268. Up to 12752 conditions per place. [2024-10-13 12:41:48,787 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 165 selfloop transitions, 27 changer transitions 0/206 dead transitions. [2024-10-13 12:41:48,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 206 transitions, 1912 flow [2024-10-13 12:41:48,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:41:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:41:48,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-10-13 12:41:48,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4651898734177215 [2024-10-13 12:41:48,792 INFO L175 Difference]: Start difference. First operand has 128 places, 209 transitions, 1534 flow. Second operand 4 states and 147 transitions. [2024-10-13 12:41:48,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 206 transitions, 1912 flow [2024-10-13 12:41:48,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 206 transitions, 1895 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-10-13 12:41:48,835 INFO L231 Difference]: Finished difference. Result has 127 places, 206 transitions, 1565 flow [2024-10-13 12:41:48,836 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1565, PETRI_PLACES=127, PETRI_TRANSITIONS=206} [2024-10-13 12:41:48,836 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 53 predicate places. [2024-10-13 12:41:48,837 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 206 transitions, 1565 flow [2024-10-13 12:41:48,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2024-10-13 12:41:48,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:41:48,837 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:41:48,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-13 12:41:49,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:41:49,041 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-13 12:41:49,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:41:49,042 INFO L85 PathProgramCache]: Analyzing trace with hash 840097946, now seen corresponding path program 1 times [2024-10-13 12:41:49,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:41:49,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086158215] [2024-10-13 12:41:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:41:49,042 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:41:49,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:41:49,044 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:41:49,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-13 12:41:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:41:49,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 12:41:49,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:41:49,120 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 [2024-10-13 12:41:49,284 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 12:41:49,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 19 [2024-10-13 12:41:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:41:49,444 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:41:49,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:41:49,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086158215] [2024-10-13 12:41:49,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086158215] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:41:49,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:41:49,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:41:49,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303214805] [2024-10-13 12:41:49,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:41:49,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 12:41:49,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:41:49,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 12:41:49,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-13 12:41:53,536 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 [0] [2024-10-13 12:41:57,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 12:41:57,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 79 [2024-10-13 12:41:57,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 206 transitions, 1565 flow. Second operand has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:41:57,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:41:57,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 79 [2024-10-13 12:41:57,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:42:05,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 12:42:10,301 INFO L124 PetriNetUnfolderBase]: 17295/24449 cut-off events. [2024-10-13 12:42:10,301 INFO L125 PetriNetUnfolderBase]: For 7804/9069 co-relation queries the response was YES. [2024-10-13 12:42:10,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56104 conditions, 24449 events. 17295/24449 cut-off events. For 7804/9069 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 148320 event pairs, 8569 based on Foata normal form. 0/19892 useless extension candidates. Maximal degree in co-relation 55884. Up to 15772 conditions per place. [2024-10-13 12:42:10,829 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 231 selfloop transitions, 50 changer transitions 0/293 dead transitions. [2024-10-13 12:42:10,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 293 transitions, 2353 flow [2024-10-13 12:42:10,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:42:10,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:42:10,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 300 transitions. [2024-10-13 12:42:10,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5424954792043399 [2024-10-13 12:42:10,832 INFO L175 Difference]: Start difference. First operand has 127 places, 206 transitions, 1565 flow. Second operand 7 states and 300 transitions. [2024-10-13 12:42:10,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 293 transitions, 2353 flow [2024-10-13 12:42:10,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 293 transitions, 2325 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:42:10,894 INFO L231 Difference]: Finished difference. Result has 134 places, 214 transitions, 1697 flow [2024-10-13 12:42:10,895 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1697, PETRI_PLACES=134, PETRI_TRANSITIONS=214} [2024-10-13 12:42:10,895 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 60 predicate places. [2024-10-13 12:42:10,896 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 214 transitions, 1697 flow [2024-10-13 12:42:10,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 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) [2024-10-13 12:42:10,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:10,896 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:42:10,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-13 12:42:11,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:42:11,098 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-13 12:42:11,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:11,099 INFO L85 PathProgramCache]: Analyzing trace with hash 209616985, now seen corresponding path program 1 times [2024-10-13 12:42:11,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:42:11,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473439977] [2024-10-13 12:42:11,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:11,099 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 [2024-10-13 12:42:11,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:42:11,101 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:42:11,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-13 12:42:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:11,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 12:42:11,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:11,225 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 [2024-10-13 12:42:11,249 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 [2024-10-13 12:42:11,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:42:11,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-13 12:42:11,453 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-13 12:42:11,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-13 12:42:11,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:11,749 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:42:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:13,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:42:13,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473439977] [2024-10-13 12:42:13,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473439977] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:42:13,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:42:13,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:42:13,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26797859] [2024-10-13 12:42:13,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:42:13,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:42:13,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:42:13,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:42:13,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:42:21,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2024-10-13 12:42:21,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 214 transitions, 1697 flow. Second operand has 14 states, 14 states have (on average 21.714285714285715) internal successors, (304), 14 states have internal predecessors, (304), 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) [2024-10-13 12:42:21,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:21,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2024-10-13 12:42:21,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand