./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 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:56:12,491 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:56:12,548 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:56:12,551 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:56:12,551 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:56:12,566 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:56:12,566 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:56:12,567 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:56:12,567 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:56:12,567 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:56:12,568 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:56:12,568 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:56:12,568 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:56:12,569 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:56:12,569 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:56:12,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:56:12,569 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:56:12,570 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:56:12,570 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:56:12,570 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:56:12,570 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:56:12,571 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:56:12,571 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:56:12,571 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:56:12,572 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:56:12,572 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:56:12,572 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:56:12,572 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:56:12,572 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:56:12,573 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:56:12,573 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:56:12,573 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:56:12,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:56:12,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:56:12,574 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:56:12,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:56:12,574 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:56:12,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:56:12,575 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:56:12,575 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:56:12,575 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:56:12,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:56:12,576 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2024-10-11 19:56:12,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:56:12,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:56:12,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:56:12,885 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:56:12,890 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:56:12,891 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-10-11 19:56:14,280 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:56:14,455 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:56:14,455 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-10-11 19:56:14,469 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f4d537bb7/a633f5a86d314667b79ebd15f70f0db1/FLAGe35725793 [2024-10-11 19:56:14,483 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f4d537bb7/a633f5a86d314667b79ebd15f70f0db1 [2024-10-11 19:56:14,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:56:14,488 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:56:14,489 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:56:14,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:56:14,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:56:14,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:56:14" (1/1) ... [2024-10-11 19:56:14,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7572fee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:14, skipping insertion in model container [2024-10-11 19:56:14,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:56:14" (1/1) ... [2024-10-11 19:56:14,520 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:56:14,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:56:14,713 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 19:56:14,714 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@77c56e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:14, skipping insertion in model container [2024-10-11 19:56:14,714 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:56:14,714 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:56:14,716 INFO L158 Benchmark]: Toolchain (without parser) took 227.52ms. Allocated memory is still 176.2MB. Free memory was 109.5MB in the beginning and 97.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:56:14,716 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 104.9MB. Free memory is still 67.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:56:14,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.02ms. Allocated memory is still 176.2MB. Free memory was 109.2MB in the beginning and 97.8MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:56:14,717 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 104.9MB. Free memory is still 67.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.02ms. Allocated memory is still 176.2MB. Free memory was 109.2MB in the beginning and 97.8MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. 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-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:56:16,515 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:56:16,589 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:56:16,595 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:56:16,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:56:16,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:56:16,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:56:16,621 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:56:16,622 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:56:16,626 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:56:16,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:56:16,626 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:56:16,626 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:56:16,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:56:16,627 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:56:16,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:56:16,628 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:56:16,628 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:56:16,628 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:56:16,629 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:56:16,629 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:56:16,629 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:56:16,630 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:56:16,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:56:16,630 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:56:16,630 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:56:16,631 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:56:16,631 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:56:16,631 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:56:16,631 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:56:16,631 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:56:16,632 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:56:16,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:56:16,632 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:56:16,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:56:16,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:56:16,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:56:16,634 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:56:16,634 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:56:16,634 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:56:16,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:56:16,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:56:16,635 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:56:16,635 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:56:16,635 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:56:16,635 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2024-10-11 19:56:16,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:56:16,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:56:16,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:56:16,928 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:56:16,929 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:56:16,930 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-10-11 19:56:18,347 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:56:18,575 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:56:18,575 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-10-11 19:56:18,583 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5d420da4a/7afea89ad4064e43922840c4da0185ef/FLAGdfb7ac885 [2024-10-11 19:56:18,594 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5d420da4a/7afea89ad4064e43922840c4da0185ef [2024-10-11 19:56:18,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:56:18,597 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:56:18,597 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:56:18,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:56:18,604 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:56:18,604 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:56:18" (1/1) ... [2024-10-11 19:56:18,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538eeaf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:18, skipping insertion in model container [2024-10-11 19:56:18,605 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:56:18" (1/1) ... [2024-10-11 19:56:18,628 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:56:18,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:56:18,833 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:56:18,838 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:56:18,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:56:18,866 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:56:18,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:56:18,917 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:56:18,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:18 WrapperNode [2024-10-11 19:56:18,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:56:18,918 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:56:18,918 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:56:18,918 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:56:18,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:18" (1/1) ... [2024-10-11 19:56:18,936 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:18" (1/1) ... [2024-10-11 19:56:18,967 INFO L138 Inliner]: procedures = 27, calls = 41, calls flagged for inlining = 17, calls inlined = 23, statements flattened = 266 [2024-10-11 19:56:18,967 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:56:18,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:56:18,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:56:18,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:56:18,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:18" (1/1) ... [2024-10-11 19:56:18,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:18" (1/1) ... [2024-10-11 19:56:18,987 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:18" (1/1) ... [2024-10-11 19:56:19,008 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]. [2024-10-11 19:56:19,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:18" (1/1) ... [2024-10-11 19:56:19,011 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:18" (1/1) ... [2024-10-11 19:56:19,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:18" (1/1) ... [2024-10-11 19:56:19,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:18" (1/1) ... [2024-10-11 19:56:19,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:18" (1/1) ... [2024-10-11 19:56:19,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:18" (1/1) ... [2024-10-11 19:56:19,044 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:56:19,044 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:56:19,044 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:56:19,045 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:56:19,045 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:18" (1/1) ... [2024-10-11 19:56:19,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:56:19,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:56:19,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:56:19,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:56:19,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:56:19,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:56:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:56:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:56:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:56:19,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:56:19,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:56:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:56:19,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:56:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 19:56:19,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 19:56:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:56:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:56:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:56:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:56:19,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:56:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:56:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:56:19,135 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:56:19,255 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:56:19,257 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:56:19,779 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:56:19,779 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:56:20,051 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:56:20,051 INFO L314 CfgBuilder]: Removed 8 assume(true) statements. [2024-10-11 19:56:20,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:56:20 BoogieIcfgContainer [2024-10-11 19:56:20,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:56:20,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:56:20,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:56:20,056 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:56:20,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:56:18" (1/3) ... [2024-10-11 19:56:20,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be2153e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:56:20, skipping insertion in model container [2024-10-11 19:56:20,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:18" (2/3) ... [2024-10-11 19:56:20,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be2153e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:56:20, skipping insertion in model container [2024-10-11 19:56:20,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:56:20" (3/3) ... [2024-10-11 19:56:20,058 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2024-10-11 19:56:20,070 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:56:20,070 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-10-11 19:56:20,071 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:56:20,157 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 19:56:20,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 79 transitions, 179 flow [2024-10-11 19:56:20,259 INFO L124 PetriNetUnfolderBase]: 11/76 cut-off events. [2024-10-11 19:56:20,259 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 19:56:20,266 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. [2024-10-11 19:56:20,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 79 transitions, 179 flow [2024-10-11 19:56:20,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 75 transitions, 168 flow [2024-10-11 19:56:20,276 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:56:20,281 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;@56e54312, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:56:20,281 INFO L334 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2024-10-11 19:56:20,288 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:56:20,288 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:56:20,288 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:56:20,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:20,288 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:56:20,289 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-11 19:56:20,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:20,297 INFO L85 PathProgramCache]: Analyzing trace with hash 861111, now seen corresponding path program 1 times [2024-10-11 19:56:20,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:20,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941583294] [2024-10-11 19:56:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:20,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:20,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:20,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:20,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 19:56:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:20,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:56:20,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:20,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:56:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:20,505 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:20,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:20,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941583294] [2024-10-11 19:56:20,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941583294] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:20,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:20,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:56:20,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811096300] [2024-10-11 19:56:20,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:20,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:56:20,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:20,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:56:20,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:56:20,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 79 [2024-10-11 19:56:20,608 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) [2024-10-11 19:56:20,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:20,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 79 [2024-10-11 19:56:20,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:21,545 INFO L124 PetriNetUnfolderBase]: 4704/6958 cut-off events. [2024-10-11 19:56:21,546 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2024-10-11 19:56:21,555 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. [2024-10-11 19:56:21,581 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 45 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-10-11 19:56:21,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 248 flow [2024-10-11 19:56:21,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:56:21,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:56:21,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-10-11 19:56:21,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.540084388185654 [2024-10-11 19:56:21,592 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 168 flow. Second operand 3 states and 128 transitions. [2024-10-11 19:56:21,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 248 flow [2024-10-11 19:56:21,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 236 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 19:56:21,597 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 146 flow [2024-10-11 19:56:21,599 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} [2024-10-11 19:56:21,601 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2024-10-11 19:56:21,601 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 146 flow [2024-10-11 19:56:21,601 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) [2024-10-11 19:56:21,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:21,601 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:56:21,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-11 19:56:21,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:21,805 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-11 19:56:21,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:21,806 INFO L85 PathProgramCache]: Analyzing trace with hash 861112, now seen corresponding path program 1 times [2024-10-11 19:56:21,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:21,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187557674] [2024-10-11 19:56:21,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:21,807 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 [2024-10-11 19:56:21,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:21,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:21,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 19:56:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:21,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:56:21,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:21,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:21,975 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:21,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:21,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187557674] [2024-10-11 19:56:21,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187557674] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:21,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:21,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:56:21,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654772459] [2024-10-11 19:56:21,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:21,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:56:21,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:21,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:56:21,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:56:22,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 79 [2024-10-11 19:56:22,119 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) [2024-10-11 19:56:22,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:22,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 79 [2024-10-11 19:56:22,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:22,833 INFO L124 PetriNetUnfolderBase]: 4706/6964 cut-off events. [2024-10-11 19:56:22,834 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-10-11 19:56:22,839 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. [2024-10-11 19:56:22,867 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 48 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-10-11 19:56:22,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 74 transitions, 270 flow [2024-10-11 19:56:22,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:56:22,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:56:22,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-10-11 19:56:22,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49683544303797467 [2024-10-11 19:56:22,869 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 146 flow. Second operand 4 states and 157 transitions. [2024-10-11 19:56:22,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 74 transitions, 270 flow [2024-10-11 19:56:22,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:56:22,872 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 198 flow [2024-10-11 19:56:22,872 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} [2024-10-11 19:56:22,873 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2024-10-11 19:56:22,873 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 198 flow [2024-10-11 19:56:22,873 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) [2024-10-11 19:56:22,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:22,874 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:56:22,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-11 19:56:23,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:23,075 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-11 19:56:23,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:23,079 INFO L85 PathProgramCache]: Analyzing trace with hash 827556557, now seen corresponding path program 1 times [2024-10-11 19:56:23,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:23,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406201417] [2024-10-11 19:56:23,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:23,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:23,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:23,082 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:23,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-11 19:56:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:23,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 19:56:23,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:23,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:23,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:23,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:23,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:23,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406201417] [2024-10-11 19:56:23,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406201417] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:23,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:23,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:56:23,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202218230] [2024-10-11 19:56:23,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:23,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:56:23,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:23,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:56:23,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:56:24,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 79 [2024-10-11 19:56:24,264 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) [2024-10-11 19:56:24,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:24,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 79 [2024-10-11 19:56:24,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:25,456 INFO L124 PetriNetUnfolderBase]: 4712/6982 cut-off events. [2024-10-11 19:56:25,456 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-10-11 19:56:25,461 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. [2024-10-11 19:56:25,479 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 48 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2024-10-11 19:56:25,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 92 transitions, 422 flow [2024-10-11 19:56:25,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:56:25,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:56:25,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2024-10-11 19:56:25,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41645569620253164 [2024-10-11 19:56:25,482 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 198 flow. Second operand 10 states and 329 transitions. [2024-10-11 19:56:25,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 92 transitions, 422 flow [2024-10-11 19:56:25,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 92 transitions, 422 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:56:25,484 INFO L231 Difference]: Finished difference. Result has 82 places, 92 transitions, 360 flow [2024-10-11 19:56:25,484 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} [2024-10-11 19:56:25,484 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 8 predicate places. [2024-10-11 19:56:25,485 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 92 transitions, 360 flow [2024-10-11 19:56:25,485 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) [2024-10-11 19:56:25,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:25,485 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:25,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-10-11 19:56:25,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:25,686 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-11 19:56:25,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:25,687 INFO L85 PathProgramCache]: Analyzing trace with hash 716547749, now seen corresponding path program 1 times [2024-10-11 19:56:25,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:25,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400798085] [2024-10-11 19:56:25,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:25,688 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:25,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:25,689 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:25,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 19:56:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:25,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:56:25,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:25,778 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:25,778 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:25,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400798085] [2024-10-11 19:56:25,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400798085] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:25,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:25,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:56:25,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728880366] [2024-10-11 19:56:25,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:25,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:56:25,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:25,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:56:25,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:56:25,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 79 [2024-10-11 19:56:25,816 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) [2024-10-11 19:56:25,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:25,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 79 [2024-10-11 19:56:25,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:26,476 INFO L124 PetriNetUnfolderBase]: 4712/6993 cut-off events. [2024-10-11 19:56:26,477 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-10-11 19:56:26,483 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. [2024-10-11 19:56:26,506 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 78 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2024-10-11 19:56:26,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 102 transitions, 592 flow [2024-10-11 19:56:26,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:56:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:56:26,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-10-11 19:56:26,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.509493670886076 [2024-10-11 19:56:26,508 INFO L175 Difference]: Start difference. First operand has 82 places, 92 transitions, 360 flow. Second operand 4 states and 161 transitions. [2024-10-11 19:56:26,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 102 transitions, 592 flow [2024-10-11 19:56:26,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 102 transitions, 509 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-10-11 19:56:26,512 INFO L231 Difference]: Finished difference. Result has 82 places, 92 transitions, 313 flow [2024-10-11 19:56:26,512 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} [2024-10-11 19:56:26,513 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 8 predicate places. [2024-10-11 19:56:26,513 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 92 transitions, 313 flow [2024-10-11 19:56:26,513 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) [2024-10-11 19:56:26,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:26,514 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:26,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-11 19:56:26,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:26,717 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-11 19:56:26,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:26,718 INFO L85 PathProgramCache]: Analyzing trace with hash -2065927366, now seen corresponding path program 1 times [2024-10-11 19:56:26,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:26,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661747149] [2024-10-11 19:56:26,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:26,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:26,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:26,723 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:26,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 19:56:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:26,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:56:26,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:26,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:26,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:56:26,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:56:26,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:56:26,987 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:56:26,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:56:27,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:27,109 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:27,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:27,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661747149] [2024-10-11 19:56:27,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661747149] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:27,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:27,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 19:56:27,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540892284] [2024-10-11 19:56:27,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:27,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:56:27,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:27,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:56:27,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:56:28,616 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2024-10-11 19:56:28,616 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) [2024-10-11 19:56:28,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:28,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2024-10-11 19:56:28,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:32,861 INFO L124 PetriNetUnfolderBase]: 21885/31890 cut-off events. [2024-10-11 19:56:32,861 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2024-10-11 19:56:32,895 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. [2024-10-11 19:56:33,010 INFO L140 encePairwiseOnDemand]: 66/79 looper letters, 247 selfloop transitions, 56 changer transitions 0/319 dead transitions. [2024-10-11 19:56:33,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 319 transitions, 1513 flow [2024-10-11 19:56:33,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 19:56:33,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 19:56:33,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 765 transitions. [2024-10-11 19:56:33,014 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42102366538249864 [2024-10-11 19:56:33,014 INFO L175 Difference]: Start difference. First operand has 82 places, 92 transitions, 313 flow. Second operand 23 states and 765 transitions. [2024-10-11 19:56:33,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 319 transitions, 1513 flow [2024-10-11 19:56:33,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 319 transitions, 1509 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 19:56:33,022 INFO L231 Difference]: Finished difference. Result has 104 places, 124 transitions, 584 flow [2024-10-11 19:56:33,023 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} [2024-10-11 19:56:33,024 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2024-10-11 19:56:33,024 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 124 transitions, 584 flow [2024-10-11 19:56:33,025 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) [2024-10-11 19:56:33,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:33,025 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:33,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-10-11 19:56:33,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:33,229 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-11 19:56:33,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:33,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2065927367, now seen corresponding path program 1 times [2024-10-11 19:56:33,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:33,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464415417] [2024-10-11 19:56:33,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:33,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:33,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:33,233 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:33,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 19:56:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:33,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:56:33,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:33,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:56:33,315 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-11 19:56:33,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-11 19:56:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:33,344 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:33,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:33,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464415417] [2024-10-11 19:56:33,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464415417] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:33,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:33,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:56:33,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714098563] [2024-10-11 19:56:33,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:33,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:56:33,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:33,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:56:33,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:56:33,422 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 79 [2024-10-11 19:56:33,422 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) [2024-10-11 19:56:33,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:33,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 79 [2024-10-11 19:56:33,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:35,982 INFO L124 PetriNetUnfolderBase]: 24822/34605 cut-off events. [2024-10-11 19:56:35,982 INFO L125 PetriNetUnfolderBase]: For 6891/8227 co-relation queries the response was YES. [2024-10-11 19:56:36,023 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. [2024-10-11 19:56:36,135 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 88 selfloop transitions, 19 changer transitions 0/118 dead transitions. [2024-10-11 19:56:36,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 118 transitions, 786 flow [2024-10-11 19:56:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:56:36,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:56:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-10-11 19:56:36,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34430379746835443 [2024-10-11 19:56:36,137 INFO L175 Difference]: Start difference. First operand has 104 places, 124 transitions, 584 flow. Second operand 5 states and 136 transitions. [2024-10-11 19:56:36,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 118 transitions, 786 flow [2024-10-11 19:56:36,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 118 transitions, 738 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-10-11 19:56:36,165 INFO L231 Difference]: Finished difference. Result has 99 places, 118 transitions, 562 flow [2024-10-11 19:56:36,166 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} [2024-10-11 19:56:36,166 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2024-10-11 19:56:36,166 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 118 transitions, 562 flow [2024-10-11 19:56:36,167 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) [2024-10-11 19:56:36,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:36,167 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 19:56:36,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-10-11 19:56:36,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:36,370 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-11 19:56:36,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:36,370 INFO L85 PathProgramCache]: Analyzing trace with hash -263505780, now seen corresponding path program 2 times [2024-10-11 19:56:36,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:36,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87138528] [2024-10-11 19:56:36,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:56:36,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:36,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:36,372 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:36,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 19:56:36,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:56:36,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:56:36,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 19:56:36,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:36,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:36,642 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:36,642 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:37,083 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:37,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:37,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87138528] [2024-10-11 19:56:37,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87138528] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:37,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:37,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:56:37,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49107901] [2024-10-11 19:56:37,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:37,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:56:37,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:37,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:56:37,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:56:38,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 79 [2024-10-11 19:56:38,033 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) [2024-10-11 19:56:38,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:38,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 79 [2024-10-11 19:56:38,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:42,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:56:47,515 INFO L124 PetriNetUnfolderBase]: 18542/26689 cut-off events. [2024-10-11 19:56:47,515 INFO L125 PetriNetUnfolderBase]: For 5216/5414 co-relation queries the response was YES. [2024-10-11 19:56:47,542 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. [2024-10-11 19:56:47,609 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 63 selfloop transitions, 103 changer transitions 0/178 dead transitions. [2024-10-11 19:56:47,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 178 transitions, 1320 flow [2024-10-11 19:56:47,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:56:47,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:56:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 671 transitions. [2024-10-11 19:56:47,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3860759493670886 [2024-10-11 19:56:47,612 INFO L175 Difference]: Start difference. First operand has 99 places, 118 transitions, 562 flow. Second operand 22 states and 671 transitions. [2024-10-11 19:56:47,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 178 transitions, 1320 flow [2024-10-11 19:56:47,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 178 transitions, 1277 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:56:47,638 INFO L231 Difference]: Finished difference. Result has 123 places, 178 transitions, 1241 flow [2024-10-11 19:56:47,638 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} [2024-10-11 19:56:47,639 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 49 predicate places. [2024-10-11 19:56:47,639 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 178 transitions, 1241 flow [2024-10-11 19:56:47,639 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) [2024-10-11 19:56:47,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:47,639 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:47,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-11 19:56:47,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:47,840 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-11 19:56:47,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:47,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1099141470, now seen corresponding path program 1 times [2024-10-11 19:56:47,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:47,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586600512] [2024-10-11 19:56:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:47,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:47,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:47,845 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:47,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 19:56:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:47,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:56:47,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:48,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:48,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:48,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:48,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586600512] [2024-10-11 19:56:48,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586600512] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:48,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:48,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-10-11 19:56:48,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637252025] [2024-10-11 19:56:48,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:48,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:56:48,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:48,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:56:48,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:56:48,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-10-11 19:56:48,418 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) [2024-10-11 19:56:48,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:48,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-10-11 19:56:48,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:50,570 INFO L124 PetriNetUnfolderBase]: 13581/19793 cut-off events. [2024-10-11 19:56:50,571 INFO L125 PetriNetUnfolderBase]: For 4363/4555 co-relation queries the response was YES. [2024-10-11 19:56:50,593 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. [2024-10-11 19:56:50,636 INFO L140 encePairwiseOnDemand]: 69/79 looper letters, 175 selfloop transitions, 78 changer transitions 0/266 dead transitions. [2024-10-11 19:56:50,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 266 transitions, 2175 flow [2024-10-11 19:56:50,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:56:50,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:56:50,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 376 transitions. [2024-10-11 19:56:50,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4759493670886076 [2024-10-11 19:56:50,638 INFO L175 Difference]: Start difference. First operand has 123 places, 178 transitions, 1241 flow. Second operand 10 states and 376 transitions. [2024-10-11 19:56:50,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 266 transitions, 2175 flow [2024-10-11 19:56:50,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 266 transitions, 1827 flow, removed 114 selfloop flow, removed 9 redundant places. [2024-10-11 19:56:50,657 INFO L231 Difference]: Finished difference. Result has 128 places, 209 transitions, 1534 flow [2024-10-11 19:56:50,658 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} [2024-10-11 19:56:50,658 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 54 predicate places. [2024-10-11 19:56:50,658 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 209 transitions, 1534 flow [2024-10-11 19:56:50,658 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) [2024-10-11 19:56:50,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:50,659 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:50,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-10-11 19:56:50,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:50,862 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-11 19:56:50,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:50,862 INFO L85 PathProgramCache]: Analyzing trace with hash 840097945, now seen corresponding path program 1 times [2024-10-11 19:56:50,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:50,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211648662] [2024-10-11 19:56:50,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:50,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:50,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:50,865 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:50,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-11 19:56:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:50,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:56:50,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:50,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:56:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:50,940 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:50,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:50,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211648662] [2024-10-11 19:56:50,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211648662] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:50,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:50,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:56:50,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58362968] [2024-10-11 19:56:50,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:50,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:56:50,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:50,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:56:50,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:56:50,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 79 [2024-10-11 19:56:50,988 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) [2024-10-11 19:56:50,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:50,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 79 [2024-10-11 19:56:50,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:52,092 INFO L124 PetriNetUnfolderBase]: 9313/13972 cut-off events. [2024-10-11 19:56:52,092 INFO L125 PetriNetUnfolderBase]: For 5275/5531 co-relation queries the response was YES. [2024-10-11 19:56:52,110 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. [2024-10-11 19:56:52,146 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 165 selfloop transitions, 27 changer transitions 0/206 dead transitions. [2024-10-11 19:56:52,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 206 transitions, 1912 flow [2024-10-11 19:56:52,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:56:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:56:52,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-10-11 19:56:52,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4651898734177215 [2024-10-11 19:56:52,148 INFO L175 Difference]: Start difference. First operand has 128 places, 209 transitions, 1534 flow. Second operand 4 states and 147 transitions. [2024-10-11 19:56:52,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 206 transitions, 1912 flow [2024-10-11 19:56:52,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 206 transitions, 1895 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-10-11 19:56:52,170 INFO L231 Difference]: Finished difference. Result has 127 places, 206 transitions, 1565 flow [2024-10-11 19:56:52,171 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} [2024-10-11 19:56:52,171 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 53 predicate places. [2024-10-11 19:56:52,171 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 206 transitions, 1565 flow [2024-10-11 19:56:52,172 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) [2024-10-11 19:56:52,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:52,172 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:52,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-11 19:56:52,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:52,374 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-11 19:56:52,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:52,375 INFO L85 PathProgramCache]: Analyzing trace with hash 840097946, now seen corresponding path program 1 times [2024-10-11 19:56:52,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:52,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231721179] [2024-10-11 19:56:52,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:52,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:52,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:52,378 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:52,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-11 19:56:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:52,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:56:52,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:52,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:52,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 19:56:52,561 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 [2024-10-11 19:56:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:52,660 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:52,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:52,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231721179] [2024-10-11 19:56:52,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231721179] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:52,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:52,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 19:56:52,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014782525] [2024-10-11 19:56:52,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:52,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 19:56:52,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:52,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 19:56:52,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 19:56:55,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 19:56:57,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 19:56:58,684 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-10-11 19:56:58,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 206 transitions, 1565 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:58,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:58,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-10-11 19:56:58,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:03,408 INFO L124 PetriNetUnfolderBase]: 15837/22497 cut-off events. [2024-10-11 19:57:03,409 INFO L125 PetriNetUnfolderBase]: For 7476/8669 co-relation queries the response was YES. [2024-10-11 19:57:03,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51793 conditions, 22497 events. 15837/22497 cut-off events. For 7476/8669 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 134677 event pairs, 7777 based on Foata normal form. 0/18706 useless extension candidates. Maximal degree in co-relation 51573. Up to 14434 conditions per place. [2024-10-11 19:57:03,500 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 227 selfloop transitions, 50 changer transitions 0/290 dead transitions. [2024-10-11 19:57:03,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 290 transitions, 2339 flow [2024-10-11 19:57:03,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 19:57:03,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 19:57:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 303 transitions. [2024-10-11 19:57:03,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5479204339963833 [2024-10-11 19:57:03,502 INFO L175 Difference]: Start difference. First operand has 127 places, 206 transitions, 1565 flow. Second operand 7 states and 303 transitions. [2024-10-11 19:57:03,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 290 transitions, 2339 flow [2024-10-11 19:57:03,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 290 transitions, 2311 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:57:03,522 INFO L231 Difference]: Finished difference. Result has 134 places, 214 transitions, 1697 flow [2024-10-11 19:57:03,522 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} [2024-10-11 19:57:03,523 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 60 predicate places. [2024-10-11 19:57:03,523 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 214 transitions, 1697 flow [2024-10-11 19:57:03,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:03,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:03,523 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:03,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-11 19:57:03,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:57:03,726 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-11 19:57:03,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:03,727 INFO L85 PathProgramCache]: Analyzing trace with hash 209616985, now seen corresponding path program 1 times [2024-10-11 19:57:03,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:57:03,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154653639] [2024-10-11 19:57:03,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:03,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:57:03,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:57:03,730 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:57:03,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-11 19:57:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:03,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 19:57:03,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:03,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:57:03,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:57:04,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:57:04,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:57:04,171 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:57:04,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:57:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:04,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:05,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:05,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:57:05,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154653639] [2024-10-11 19:57:05,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154653639] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:05,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:57:05,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:57:05,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632677085] [2024-10-11 19:57:05,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:05,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:57:05,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:57:05,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:57:05,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:57:09,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2024-10-11 19:57:09,589 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) [2024-10-11 19:57:09,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:09,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2024-10-11 19:57:09,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:17,383 INFO L124 PetriNetUnfolderBase]: 19992/28468 cut-off events. [2024-10-11 19:57:17,384 INFO L125 PetriNetUnfolderBase]: For 23484/25756 co-relation queries the response was YES. [2024-10-11 19:57:17,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74923 conditions, 28468 events. 19992/28468 cut-off events. For 23484/25756 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 177789 event pairs, 5413 based on Foata normal form. 697/25388 useless extension candidates. Maximal degree in co-relation 74691. Up to 6237 conditions per place. [2024-10-11 19:57:17,528 INFO L140 encePairwiseOnDemand]: 66/79 looper letters, 252 selfloop transitions, 141 changer transitions 0/403 dead transitions. [2024-10-11 19:57:17,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 403 transitions, 3309 flow [2024-10-11 19:57:17,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-11 19:57:17,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-11 19:57:17,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 633 transitions. [2024-10-11 19:57:17,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4006329113924051 [2024-10-11 19:57:17,532 INFO L175 Difference]: Start difference. First operand has 134 places, 214 transitions, 1697 flow. Second operand 20 states and 633 transitions. [2024-10-11 19:57:17,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 403 transitions, 3309 flow [2024-10-11 19:57:17,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 403 transitions, 3192 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:57:17,567 INFO L231 Difference]: Finished difference. Result has 152 places, 235 transitions, 2112 flow [2024-10-11 19:57:17,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2112, PETRI_PLACES=152, PETRI_TRANSITIONS=235} [2024-10-11 19:57:17,568 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 78 predicate places. [2024-10-11 19:57:17,568 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 235 transitions, 2112 flow [2024-10-11 19:57:17,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-10-11 19:57:17,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:17,569 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:17,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-11 19:57:17,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:57:17,769 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-11 19:57:17,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:17,770 INFO L85 PathProgramCache]: Analyzing trace with hash -661591881, now seen corresponding path program 2 times [2024-10-11 19:57:17,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:57:17,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074301856] [2024-10-11 19:57:17,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:57:17,770 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:57:17,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:57:17,776 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:57:17,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-11 19:57:17,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 19:57:17,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:57:17,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 19:57:17,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:17,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:57:17,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:57:17,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:57:17,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:57:17,944 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:57:17,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:57:18,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 19:57:18,051 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:57:18,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:57:18,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074301856] [2024-10-11 19:57:18,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074301856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:18,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:18,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:57:18,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96594815] [2024-10-11 19:57:18,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:18,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:57:18,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:57:18,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:57:18,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:57:18,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2024-10-11 19:57:18,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 235 transitions, 2112 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:18,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:18,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2024-10-11 19:57:18,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:23,290 INFO L124 PetriNetUnfolderBase]: 39836/56027 cut-off events. [2024-10-11 19:57:23,290 INFO L125 PetriNetUnfolderBase]: For 46146/50572 co-relation queries the response was YES. [2024-10-11 19:57:23,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150650 conditions, 56027 events. 39836/56027 cut-off events. For 46146/50572 co-relation queries the response was YES. Maximal size of possible extension queue 1308. Compared 346641 event pairs, 16973 based on Foata normal form. 0/48468 useless extension candidates. Maximal degree in co-relation 150396. Up to 33459 conditions per place. [2024-10-11 19:57:23,867 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 239 selfloop transitions, 50 changer transitions 0/297 dead transitions. [2024-10-11 19:57:23,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 297 transitions, 2953 flow [2024-10-11 19:57:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:57:23,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:57:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 204 transitions. [2024-10-11 19:57:23,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43037974683544306 [2024-10-11 19:57:23,868 INFO L175 Difference]: Start difference. First operand has 152 places, 235 transitions, 2112 flow. Second operand 6 states and 204 transitions. [2024-10-11 19:57:23,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 297 transitions, 2953 flow [2024-10-11 19:57:23,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 297 transitions, 2908 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-10-11 19:57:23,945 INFO L231 Difference]: Finished difference. Result has 152 places, 237 transitions, 2186 flow [2024-10-11 19:57:23,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2186, PETRI_PLACES=152, PETRI_TRANSITIONS=237} [2024-10-11 19:57:23,946 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 78 predicate places. [2024-10-11 19:57:23,946 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 237 transitions, 2186 flow [2024-10-11 19:57:23,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:23,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:23,947 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:23,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-11 19:57:24,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:57:24,149 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-11 19:57:24,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:24,150 INFO L85 PathProgramCache]: Analyzing trace with hash -119731110, now seen corresponding path program 1 times [2024-10-11 19:57:24,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:57:24,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82929617] [2024-10-11 19:57:24,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:57:24,150 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:57:24,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:57:24,153 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:57:24,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-11 19:57:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:57:24,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:57:24,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:24,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:24,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:57:24,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:57:24,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82929617] [2024-10-11 19:57:24,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82929617] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:24,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:57:24,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-10-11 19:57:24,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115212328] [2024-10-11 19:57:24,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:24,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:57:24,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:57:24,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:57:24,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:57:24,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-10-11 19:57:24,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 237 transitions, 2186 flow. Second operand has 14 states, 14 states have (on average 27.714285714285715) internal successors, (388), 14 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:24,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:24,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-10-11 19:57:24,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:28,846 INFO L124 PetriNetUnfolderBase]: 26216/38997 cut-off events. [2024-10-11 19:57:28,846 INFO L125 PetriNetUnfolderBase]: For 35708/37530 co-relation queries the response was YES. [2024-10-11 19:57:28,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107058 conditions, 38997 events. 26216/38997 cut-off events. For 35708/37530 co-relation queries the response was YES. Maximal size of possible extension queue 1250. Compared 271390 event pairs, 17313 based on Foata normal form. 691/34800 useless extension candidates. Maximal degree in co-relation 106799. Up to 30960 conditions per place. [2024-10-11 19:57:29,107 INFO L140 encePairwiseOnDemand]: 69/79 looper letters, 211 selfloop transitions, 72 changer transitions 0/296 dead transitions. [2024-10-11 19:57:29,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 296 transitions, 2956 flow [2024-10-11 19:57:29,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:57:29,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:57:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 381 transitions. [2024-10-11 19:57:29,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48227848101265824 [2024-10-11 19:57:29,109 INFO L175 Difference]: Start difference. First operand has 152 places, 237 transitions, 2186 flow. Second operand 10 states and 381 transitions. [2024-10-11 19:57:29,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 296 transitions, 2956 flow [2024-10-11 19:57:29,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 296 transitions, 2857 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:57:29,223 INFO L231 Difference]: Finished difference. Result has 157 places, 234 transitions, 2225 flow [2024-10-11 19:57:29,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=2068, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2225, PETRI_PLACES=157, PETRI_TRANSITIONS=234} [2024-10-11 19:57:29,224 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, 83 predicate places. [2024-10-11 19:57:29,224 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 234 transitions, 2225 flow [2024-10-11 19:57:29,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 27.714285714285715) internal successors, (388), 14 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:29,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:29,225 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:29,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-10-11 19:57:29,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:57:29,428 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-10-11 19:57:29,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:29,428 INFO L85 PathProgramCache]: Analyzing trace with hash -243977863, now seen corresponding path program 2 times [2024-10-11 19:57:29,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:57:29,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4294502] [2024-10-11 19:57:29,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:57:29,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:57:29,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:57:29,431 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:57:29,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-11 19:57:29,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 19:57:29,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:57:29,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 19:57:29,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:29,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:57:29,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:57:29,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 19:57:29,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 19:57:29,602 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 19:57:29,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 19:57:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 19:57:29,689 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:57:29,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:57:29,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4294502] [2024-10-11 19:57:29,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4294502] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:57:29,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:57:29,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:57:29,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260155743] [2024-10-11 19:57:29,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:57:29,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:57:29,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:57:29,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:57:29,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:57:29,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2024-10-11 19:57:29,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 234 transitions, 2225 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:29,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:29,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2024-10-11 19:57:29,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand