./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:42:51,023 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:42:51,097 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:42:51,105 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:42:51,106 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:42:51,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:42:51,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:42:51,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:42:51,142 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:42:51,142 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:42:51,143 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:42:51,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:42:51,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:42:51,145 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:42:51,145 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:42:51,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:42:51,148 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:42:51,148 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:42:51,148 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:42:51,149 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:42:51,149 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:42:51,153 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:42:51,154 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:42:51,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:42:51,154 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:42:51,155 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:42:51,155 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:42:51,155 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:42:51,155 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:42:51,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:42:51,156 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:42:51,156 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:42:51,157 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:42:51,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:42:51,157 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:42:51,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:42:51,158 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:42:51,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:42:51,158 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:42:51,158 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:42:51,158 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:42:51,159 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:42:51,159 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 [2024-10-13 12:42:51,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:42:51,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:42:51,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:42:51,447 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:42:51,447 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:42:51,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-10-13 12:42:52,955 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:42:53,110 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:42:53,111 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-10-13 12:42:53,117 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f5c98214/b4e55d70a4e441509f9df641fe86d3f9/FLAGafed45c0d [2024-10-13 12:42:53,128 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f5c98214/b4e55d70a4e441509f9df641fe86d3f9 [2024-10-13 12:42:53,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:42:53,132 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:42:53,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:42:53,133 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:42:53,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:42:53,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:42:53" (1/1) ... [2024-10-13 12:42:53,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8ac672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:53, skipping insertion in model container [2024-10-13 12:42:53,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:42:53" (1/1) ... [2024-10-13 12:42:53,162 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:42:53,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:42:53,433 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-13 12:42:53,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6a1ba966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:53, skipping insertion in model container [2024-10-13 12:42:53,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:42:53,434 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-13 12:42:53,436 INFO L158 Benchmark]: Toolchain (without parser) took 303.43ms. Allocated memory is still 167.8MB. Free memory was 100.3MB in the beginning and 137.1MB in the end (delta: -36.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-13 12:42:53,436 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 98.6MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:42:53,437 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.80ms. Allocated memory is still 167.8MB. Free memory was 100.0MB in the beginning and 137.1MB in the end (delta: -37.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-13 12:42:53,437 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 98.6MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.80ms. Allocated memory is still 167.8MB. Free memory was 100.0MB in the beginning and 137.1MB in the end (delta: -37.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 106]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:42:55,299 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:42:55,370 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-13 12:42:55,378 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:42:55,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:42:55,414 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:42:55,415 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:42:55,415 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:42:55,416 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:42:55,416 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:42:55,416 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:42:55,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:42:55,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:42:55,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:42:55,417 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:42:55,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:42:55,418 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:42:55,420 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:42:55,421 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:42:55,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:42:55,422 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:42:55,425 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:42:55,425 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:42:55,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:42:55,425 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:42:55,426 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-13 12:42:55,426 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:42:55,426 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-13 12:42:55,428 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:42:55,428 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:42:55,428 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:42:55,428 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:42:55,429 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:42:55,429 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:42:55,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:42:55,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:42:55,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:42:55,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:42:55,431 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-13 12:42:55,431 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-13 12:42:55,431 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:42:55,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:42:55,432 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:42:55,432 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:42:55,432 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-13 12:42:55,433 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d47c8696b49948f6f8f53dd9eda6f4e0281717fd9a29e264a19ded5493fa577 [2024-10-13 12:42:55,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:42:55,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:42:55,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:42:55,725 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:42:55,725 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:42:55,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-10-13 12:42:57,239 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:42:57,444 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:42:57,444 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum2.wvr.c [2024-10-13 12:42:57,465 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/351839f55/27742c47ba9f426aa4c914fce95e646b/FLAG769878f85 [2024-10-13 12:42:57,480 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/351839f55/27742c47ba9f426aa4c914fce95e646b [2024-10-13 12:42:57,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:42:57,483 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:42:57,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:42:57,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:42:57,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:42:57,490 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:42:57" (1/1) ... [2024-10-13 12:42:57,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f0eb73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:57, skipping insertion in model container [2024-10-13 12:42:57,491 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:42:57" (1/1) ... [2024-10-13 12:42:57,514 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:42:57,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:42:57,708 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-13 12:42:57,711 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:42:57,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:42:57,743 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:42:57,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:42:57,787 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:42:57,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:57 WrapperNode [2024-10-13 12:42:57,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:42:57,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:42:57,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:42:57,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:42:57,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:57" (1/1) ... [2024-10-13 12:42:57,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:57" (1/1) ... [2024-10-13 12:42:57,840 INFO L138 Inliner]: procedures = 26, calls = 38, calls flagged for inlining = 17, calls inlined = 29, statements flattened = 256 [2024-10-13 12:42:57,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:42:57,842 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:42:57,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:42:57,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:42:57,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:57" (1/1) ... [2024-10-13 12:42:57,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:57" (1/1) ... [2024-10-13 12:42:57,856 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:57" (1/1) ... [2024-10-13 12:42:57,888 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-13 12:42:57,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:57" (1/1) ... [2024-10-13 12:42:57,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:57" (1/1) ... [2024-10-13 12:42:57,903 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:57" (1/1) ... [2024-10-13 12:42:57,906 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:57" (1/1) ... [2024-10-13 12:42:57,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:57" (1/1) ... [2024-10-13 12:42:57,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:57" (1/1) ... [2024-10-13 12:42:57,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:42:57,921 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:42:57,922 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:42:57,922 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:42:57,922 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:57" (1/1) ... [2024-10-13 12:42:57,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:42:57,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:42:57,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 12:42:57,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 12:42:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:42:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-13 12:42:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-13 12:42:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-13 12:42:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-13 12:42:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:42:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:42:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:42:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:42:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 12:42:57,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 12:42:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:42:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:42:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 12:42:57,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:42:58,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:42:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-13 12:42:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-13 12:42:58,004 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:42:58,088 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:42:58,090 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:42:58,592 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:42:58,592 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:42:58,993 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:42:58,994 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-13 12:42:58,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:42:58 BoogieIcfgContainer [2024-10-13 12:42:58,994 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:42:58,996 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:42:58,996 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:42:58,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:42:58,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:42:57" (1/3) ... [2024-10-13 12:42:58,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b67350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:42:58, skipping insertion in model container [2024-10-13 12:42:58,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:57" (2/3) ... [2024-10-13 12:42:59,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b67350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:42:59, skipping insertion in model container [2024-10-13 12:42:59,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:42:58" (3/3) ... [2024-10-13 12:42:59,001 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2024-10-13 12:42:59,015 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:42:59,016 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-13 12:42:59,016 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:42:59,096 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 12:42:59,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 131 flow [2024-10-13 12:42:59,174 INFO L124 PetriNetUnfolderBase]: 5/52 cut-off events. [2024-10-13 12:42:59,174 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 12:42:59,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 52 events. 5/52 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 106 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-10-13 12:42:59,179 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 55 transitions, 131 flow [2024-10-13 12:42:59,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 51 transitions, 120 flow [2024-10-13 12:42:59,196 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:42:59,203 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;@31e7817f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:42:59,204 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-10-13 12:42:59,208 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:42:59,208 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-13 12:42:59,208 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:42:59,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:42:59,209 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:42:59,210 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-13 12:42:59,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:42:59,216 INFO L85 PathProgramCache]: Analyzing trace with hash 883884, now seen corresponding path program 1 times [2024-10-13 12:42:59,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:42:59,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398471817] [2024-10-13 12:42:59,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:42:59,226 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:42:59,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:42:59,229 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:42:59,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-13 12:42:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:42:59,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:42:59,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:42:59,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-13 12:42:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:42:59,373 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:42:59,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:42:59,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398471817] [2024-10-13 12:42:59,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398471817] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:42:59,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:42:59,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:42:59,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96953526] [2024-10-13 12:42:59,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:42:59,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:42:59,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:42:59,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:42:59,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:42:59,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 55 [2024-10-13 12:42:59,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:42:59,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:42:59,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 55 [2024-10-13 12:42:59,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:00,174 INFO L124 PetriNetUnfolderBase]: 2971/4366 cut-off events. [2024-10-13 12:43:00,174 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2024-10-13 12:43:00,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8808 conditions, 4366 events. 2971/4366 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 26236 event pairs, 2534 based on Foata normal form. 1/2616 useless extension candidates. Maximal degree in co-relation 8289. Up to 4213 conditions per place. [2024-10-13 12:43:00,205 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 39 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2024-10-13 12:43:00,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 194 flow [2024-10-13 12:43:00,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:43:00,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:43:00,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-10-13 12:43:00,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4484848484848485 [2024-10-13 12:43:00,217 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 120 flow. Second operand 3 states and 74 transitions. [2024-10-13 12:43:00,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 194 flow [2024-10-13 12:43:00,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 182 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 12:43:00,226 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 104 flow [2024-10-13 12:43:00,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2024-10-13 12:43:00,230 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2024-10-13 12:43:00,231 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 104 flow [2024-10-13 12:43:00,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:00,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:00,231 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:43:00,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-13 12:43:00,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:00,433 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-13 12:43:00,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:00,434 INFO L85 PathProgramCache]: Analyzing trace with hash 883885, now seen corresponding path program 1 times [2024-10-13 12:43:00,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:00,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309388420] [2024-10-13 12:43:00,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:00,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:00,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:00,438 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:00,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-13 12:43:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:00,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:43:00,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:00,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-13 12:43:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:00,618 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:43:00,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:43:00,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309388420] [2024-10-13 12:43:00,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309388420] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:43:00,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:43:00,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:43:00,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129135026] [2024-10-13 12:43:00,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:43:00,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:43:00,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:43:00,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:43:00,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:43:00,682 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 55 [2024-10-13 12:43:00,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:00,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:00,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 55 [2024-10-13 12:43:00,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:01,462 INFO L124 PetriNetUnfolderBase]: 2973/4372 cut-off events. [2024-10-13 12:43:01,462 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-10-13 12:43:01,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8677 conditions, 4372 events. 2973/4372 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 26253 event pairs, 2534 based on Foata normal form. 0/2619 useless extension candidates. Maximal degree in co-relation 8641. Up to 4222 conditions per place. [2024-10-13 12:43:01,484 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 42 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-10-13 12:43:01,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 216 flow [2024-10-13 12:43:01,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:43:01,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:43:01,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-10-13 12:43:01,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41363636363636364 [2024-10-13 12:43:01,488 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 104 flow. Second operand 4 states and 91 transitions. [2024-10-13 12:43:01,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 216 flow [2024-10-13 12:43:01,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:43:01,490 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 156 flow [2024-10-13 12:43:01,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2024-10-13 12:43:01,491 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2024-10-13 12:43:01,491 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 156 flow [2024-10-13 12:43:01,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:01,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:01,492 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-13 12:43:01,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-13 12:43:01,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:01,694 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-13 12:43:01,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:01,695 INFO L85 PathProgramCache]: Analyzing trace with hash 849442080, now seen corresponding path program 1 times [2024-10-13 12:43:01,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:01,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577888940] [2024-10-13 12:43:01,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:01,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:01,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:01,698 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:01,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-13 12:43:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:01,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:43:01,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:01,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-13 12:43:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:01,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:43:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:02,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:43:02,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577888940] [2024-10-13 12:43:02,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577888940] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:43:02,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:43:02,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-13 12:43:02,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591739880] [2024-10-13 12:43:02,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:43:02,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:43:02,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:43:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:43:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:43:02,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 55 [2024-10-13 12:43:02,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 156 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:02,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:02,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 55 [2024-10-13 12:43:02,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:03,556 INFO L124 PetriNetUnfolderBase]: 2979/4390 cut-off events. [2024-10-13 12:43:03,556 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-10-13 12:43:03,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8755 conditions, 4390 events. 2979/4390 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 26300 event pairs, 2534 based on Foata normal form. 0/2635 useless extension candidates. Maximal degree in co-relation 8652. Up to 4225 conditions per place. [2024-10-13 12:43:03,611 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 42 selfloop transitions, 25 changer transitions 0/71 dead transitions. [2024-10-13 12:43:03,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 71 transitions, 368 flow [2024-10-13 12:43:03,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:43:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:43:03,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-10-13 12:43:03,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3145454545454546 [2024-10-13 12:43:03,614 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 156 flow. Second operand 10 states and 173 transitions. [2024-10-13 12:43:03,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 71 transitions, 368 flow [2024-10-13 12:43:03,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 71 transitions, 368 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:43:03,617 INFO L231 Difference]: Finished difference. Result has 64 places, 71 transitions, 318 flow [2024-10-13 12:43:03,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=318, PETRI_PLACES=64, PETRI_TRANSITIONS=71} [2024-10-13 12:43:03,618 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-10-13 12:43:03,618 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 71 transitions, 318 flow [2024-10-13 12:43:03,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:03,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:03,619 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:03,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-13 12:43:03,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:03,822 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-13 12:43:03,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:03,822 INFO L85 PathProgramCache]: Analyzing trace with hash 341357820, now seen corresponding path program 1 times [2024-10-13 12:43:03,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:03,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040395506] [2024-10-13 12:43:03,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:03,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:03,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:03,826 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:03,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-13 12:43:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:03,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 12:43:03,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:03,936 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:43:03,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:43:03,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040395506] [2024-10-13 12:43:03,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040395506] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:43:03,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:43:03,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:43:03,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721142463] [2024-10-13 12:43:03,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:43:03,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:43:03,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:43:03,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:43:03,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:43:03,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-10-13 12:43:03,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 71 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:03,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:03,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-10-13 12:43:03,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:04,565 INFO L124 PetriNetUnfolderBase]: 2977/4389 cut-off events. [2024-10-13 12:43:04,565 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-10-13 12:43:04,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8794 conditions, 4389 events. 2977/4389 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 26229 event pairs, 2534 based on Foata normal form. 3/2642 useless extension candidates. Maximal degree in co-relation 8732. Up to 4234 conditions per place. [2024-10-13 12:43:04,585 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 56 selfloop transitions, 7 changer transitions 1/70 dead transitions. [2024-10-13 12:43:04,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 70 transitions, 438 flow [2024-10-13 12:43:04,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:43:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:43:04,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-10-13 12:43:04,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2024-10-13 12:43:04,591 INFO L175 Difference]: Start difference. First operand has 64 places, 71 transitions, 318 flow. Second operand 4 states and 97 transitions. [2024-10-13 12:43:04,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 70 transitions, 438 flow [2024-10-13 12:43:04,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 377 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-10-13 12:43:04,595 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 261 flow [2024-10-13 12:43:04,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2024-10-13 12:43:04,596 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-10-13 12:43:04,598 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 261 flow [2024-10-13 12:43:04,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:04,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:04,598 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:04,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-10-13 12:43:04,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:04,799 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-13 12:43:04,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:04,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1196915913, now seen corresponding path program 1 times [2024-10-13 12:43:04,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:04,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11224491] [2024-10-13 12:43:04,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:04,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:04,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:04,804 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:04,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-13 12:43:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:04,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 12:43:04,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:04,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-13 12:43:04,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-13 12:43:05,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:43:05,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-13 12:43:05,082 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-13 12:43:05,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-13 12:43:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:43:05,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:43:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:43:05,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:43:05,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11224491] [2024-10-13 12:43:05,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11224491] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:43:05,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:43:05,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-13 12:43:05,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843864765] [2024-10-13 12:43:05,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:43:05,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:43:05,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:43:05,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:43:05,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:43:05,761 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 55 [2024-10-13 12:43:05,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 261 flow. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:05,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:05,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 55 [2024-10-13 12:43:05,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:09,856 INFO L124 PetriNetUnfolderBase]: 11983/17316 cut-off events. [2024-10-13 12:43:09,857 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-10-13 12:43:09,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34495 conditions, 17316 events. 11983/17316 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 115650 event pairs, 4687 based on Foata normal form. 0/10259 useless extension candidates. Maximal degree in co-relation 25773. Up to 2938 conditions per place. [2024-10-13 12:43:09,944 INFO L140 encePairwiseOnDemand]: 41/55 looper letters, 199 selfloop transitions, 59 changer transitions 0/262 dead transitions. [2024-10-13 12:43:09,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 262 transitions, 1285 flow [2024-10-13 12:43:09,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 12:43:09,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 12:43:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 440 transitions. [2024-10-13 12:43:09,946 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34782608695652173 [2024-10-13 12:43:09,946 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 261 flow. Second operand 23 states and 440 transitions. [2024-10-13 12:43:09,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 262 transitions, 1285 flow [2024-10-13 12:43:09,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 262 transitions, 1252 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-10-13 12:43:09,953 INFO L231 Difference]: Finished difference. Result has 83 places, 108 transitions, 519 flow [2024-10-13 12:43:09,954 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=519, PETRI_PLACES=83, PETRI_TRANSITIONS=108} [2024-10-13 12:43:09,954 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2024-10-13 12:43:09,954 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 108 transitions, 519 flow [2024-10-13 12:43:09,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:09,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:09,955 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:09,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-13 12:43:10,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:10,156 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-13 12:43:10,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:10,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1196915915, now seen corresponding path program 1 times [2024-10-13 12:43:10,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:10,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401022793] [2024-10-13 12:43:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:10,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:10,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:10,160 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:10,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-13 12:43:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:10,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:43:10,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:43:10,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:43:10,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-10-13 12:43:10,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:43:10,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:43:10,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401022793] [2024-10-13 12:43:10,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401022793] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:43:10,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:43:10,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-10-13 12:43:10,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540536886] [2024-10-13 12:43:10,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:43:10,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:43:10,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:43:10,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:43:10,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:43:10,710 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-10-13 12:43:10,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 108 transitions, 519 flow. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:10,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:10,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-10-13 12:43:10,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:13,136 INFO L124 PetriNetUnfolderBase]: 13961/20493 cut-off events. [2024-10-13 12:43:13,136 INFO L125 PetriNetUnfolderBase]: For 5229/5229 co-relation queries the response was YES. [2024-10-13 12:43:13,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47464 conditions, 20493 events. 13961/20493 cut-off events. For 5229/5229 co-relation queries the response was YES. Maximal size of possible extension queue 1235. Compared 144459 event pairs, 6642 based on Foata normal form. 0/13924 useless extension candidates. Maximal degree in co-relation 31977. Up to 11583 conditions per place. [2024-10-13 12:43:13,300 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 111 selfloop transitions, 38 changer transitions 0/155 dead transitions. [2024-10-13 12:43:13,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 155 transitions, 928 flow [2024-10-13 12:43:13,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:43:13,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:43:13,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-10-13 12:43:13,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-10-13 12:43:13,303 INFO L175 Difference]: Start difference. First operand has 83 places, 108 transitions, 519 flow. Second operand 8 states and 196 transitions. [2024-10-13 12:43:13,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 155 transitions, 928 flow [2024-10-13 12:43:13,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 155 transitions, 911 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:43:13,317 INFO L231 Difference]: Finished difference. Result has 90 places, 110 transitions, 629 flow [2024-10-13 12:43:13,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=629, PETRI_PLACES=90, PETRI_TRANSITIONS=110} [2024-10-13 12:43:13,319 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 34 predicate places. [2024-10-13 12:43:13,320 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 110 transitions, 629 flow [2024-10-13 12:43:13,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:13,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:13,320 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-13 12:43:13,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-10-13 12:43:13,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:13,521 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-13 12:43:13,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:13,523 INFO L85 PathProgramCache]: Analyzing trace with hash -211011079, now seen corresponding path program 2 times [2024-10-13 12:43:13,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:13,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975386628] [2024-10-13 12:43:13,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:43:13,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:13,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:13,527 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:13,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-13 12:43:13,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:43:13,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:43:13,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:43:13,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:13,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-13 12:43:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:13,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:43:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:43:14,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:43:14,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975386628] [2024-10-13 12:43:14,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975386628] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:43:14,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:43:14,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:43:14,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513993347] [2024-10-13 12:43:14,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:43:14,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:43:14,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:43:14,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:43:14,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:43:14,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 55 [2024-10-13 12:43:14,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 110 transitions, 629 flow. Second operand has 14 states, 14 states have (on average 11.571428571428571) internal successors, (162), 14 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:14,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:14,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 55 [2024-10-13 12:43:14,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:25,420 INFO L124 PetriNetUnfolderBase]: 13985/20477 cut-off events. [2024-10-13 12:43:25,421 INFO L125 PetriNetUnfolderBase]: For 15145/15145 co-relation queries the response was YES. [2024-10-13 12:43:25,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52383 conditions, 20477 events. 13985/20477 cut-off events. For 15145/15145 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 144912 event pairs, 11762 based on Foata normal form. 24/14647 useless extension candidates. Maximal degree in co-relation 35233. Up to 19618 conditions per place. [2024-10-13 12:43:25,546 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 66 selfloop transitions, 100 changer transitions 0/170 dead transitions. [2024-10-13 12:43:25,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 170 transitions, 1381 flow [2024-10-13 12:43:25,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 12:43:25,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 12:43:25,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 333 transitions. [2024-10-13 12:43:25,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27520661157024795 [2024-10-13 12:43:25,549 INFO L175 Difference]: Start difference. First operand has 90 places, 110 transitions, 629 flow. Second operand 22 states and 333 transitions. [2024-10-13 12:43:25,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 170 transitions, 1381 flow [2024-10-13 12:43:25,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 170 transitions, 1353 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:43:25,596 INFO L231 Difference]: Finished difference. Result has 114 places, 170 transitions, 1311 flow [2024-10-13 12:43:25,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1311, PETRI_PLACES=114, PETRI_TRANSITIONS=170} [2024-10-13 12:43:25,598 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 58 predicate places. [2024-10-13 12:43:25,598 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 170 transitions, 1311 flow [2024-10-13 12:43:25,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.571428571428571) internal successors, (162), 14 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:25,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:25,600 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:25,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-13 12:43:25,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:25,801 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-13 12:43:25,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:25,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1196915912, now seen corresponding path program 1 times [2024-10-13 12:43:25,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:25,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572670216] [2024-10-13 12:43:25,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:25,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:25,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:25,804 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:25,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-13 12:43:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:25,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 12:43:25,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:25,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-13 12:43:25,923 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-13 12:43:25,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-13 12:43:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 12:43:25,942 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:43:25,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:43:25,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572670216] [2024-10-13 12:43:25,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572670216] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:43:25,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:43:25,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:43:25,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124373969] [2024-10-13 12:43:25,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:43:25,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:43:25,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:43:25,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:43:25,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:43:25,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 55 [2024-10-13 12:43:25,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 170 transitions, 1311 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:25,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:25,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 55 [2024-10-13 12:43:25,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:27,590 INFO L124 PetriNetUnfolderBase]: 9223/13638 cut-off events. [2024-10-13 12:43:27,591 INFO L125 PetriNetUnfolderBase]: For 11572/11572 co-relation queries the response was YES. [2024-10-13 12:43:27,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36417 conditions, 13638 events. 9223/13638 cut-off events. For 11572/11572 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 90176 event pairs, 7526 based on Foata normal form. 683/10928 useless extension candidates. Maximal degree in co-relation 36243. Up to 12923 conditions per place. [2024-10-13 12:43:27,717 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 134 selfloop transitions, 27 changer transitions 0/167 dead transitions. [2024-10-13 12:43:27,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 167 transitions, 1627 flow [2024-10-13 12:43:27,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:43:27,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:43:27,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-10-13 12:43:27,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33090909090909093 [2024-10-13 12:43:27,723 INFO L175 Difference]: Start difference. First operand has 114 places, 170 transitions, 1311 flow. Second operand 5 states and 91 transitions. [2024-10-13 12:43:27,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 167 transitions, 1627 flow [2024-10-13 12:43:27,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 167 transitions, 1361 flow, removed 87 selfloop flow, removed 9 redundant places. [2024-10-13 12:43:27,772 INFO L231 Difference]: Finished difference. Result has 106 places, 167 transitions, 1093 flow [2024-10-13 12:43:27,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1093, PETRI_PLACES=106, PETRI_TRANSITIONS=167} [2024-10-13 12:43:27,774 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2024-10-13 12:43:27,775 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 167 transitions, 1093 flow [2024-10-13 12:43:27,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:27,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:27,776 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:27,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-13 12:43:27,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:27,980 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-13 12:43:27,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:27,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1196915914, now seen corresponding path program 1 times [2024-10-13 12:43:27,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:27,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940452832] [2024-10-13 12:43:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:27,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:27,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:27,982 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:27,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-13 12:43:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:28,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:43:28,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:28,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-13 12:43:28,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 12:43:28,072 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:43:28,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:43:28,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940452832] [2024-10-13 12:43:28,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940452832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:43:28,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:43:28,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:43:28,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689781321] [2024-10-13 12:43:28,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:43:28,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:43:28,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:43:28,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:43:28,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:43:28,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 55 [2024-10-13 12:43:28,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 167 transitions, 1093 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:28,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:28,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 55 [2024-10-13 12:43:28,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:28,961 INFO L124 PetriNetUnfolderBase]: 5683/8497 cut-off events. [2024-10-13 12:43:28,961 INFO L125 PetriNetUnfolderBase]: For 9043/9043 co-relation queries the response was YES. [2024-10-13 12:43:28,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23397 conditions, 8497 events. 5683/8497 cut-off events. For 9043/9043 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 52177 event pairs, 4440 based on Foata normal form. 172/7266 useless extension candidates. Maximal degree in co-relation 23243. Up to 7957 conditions per place. [2024-10-13 12:43:29,007 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 137 selfloop transitions, 17 changer transitions 0/160 dead transitions. [2024-10-13 12:43:29,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 160 transitions, 1376 flow [2024-10-13 12:43:29,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:43:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:43:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-10-13 12:43:29,011 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-10-13 12:43:29,011 INFO L175 Difference]: Start difference. First operand has 106 places, 167 transitions, 1093 flow. Second operand 4 states and 78 transitions. [2024-10-13 12:43:29,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 160 transitions, 1376 flow [2024-10-13 12:43:29,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 160 transitions, 1338 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:43:29,045 INFO L231 Difference]: Finished difference. Result has 103 places, 160 transitions, 1064 flow [2024-10-13 12:43:29,045 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1064, PETRI_PLACES=103, PETRI_TRANSITIONS=160} [2024-10-13 12:43:29,045 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 47 predicate places. [2024-10-13 12:43:29,046 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 160 transitions, 1064 flow [2024-10-13 12:43:29,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:29,046 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:29,046 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:29,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-13 12:43:29,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:29,246 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-13 12:43:29,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:29,247 INFO L85 PathProgramCache]: Analyzing trace with hash -832675134, now seen corresponding path program 1 times [2024-10-13 12:43:29,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:29,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495268677] [2024-10-13 12:43:29,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:29,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:29,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:29,250 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:29,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-13 12:43:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:29,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 12:43:29,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:43:29,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:43:29,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:43:29,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:43:29,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495268677] [2024-10-13 12:43:29,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495268677] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:43:29,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:43:29,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-10-13 12:43:29,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305197567] [2024-10-13 12:43:29,618 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:43:29,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:43:29,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:43:29,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:43:29,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:43:29,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2024-10-13 12:43:29,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 160 transitions, 1064 flow. Second operand has 14 states, 14 states have (on average 12.785714285714286) internal successors, (179), 14 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:29,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:29,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2024-10-13 12:43:29,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:31,378 INFO L124 PetriNetUnfolderBase]: 6981/10407 cut-off events. [2024-10-13 12:43:31,378 INFO L125 PetriNetUnfolderBase]: For 13313/13313 co-relation queries the response was YES. [2024-10-13 12:43:31,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29205 conditions, 10407 events. 6981/10407 cut-off events. For 13313/13313 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 63221 event pairs, 4834 based on Foata normal form. 1/8821 useless extension candidates. Maximal degree in co-relation 29084. Up to 6311 conditions per place. [2024-10-13 12:43:31,534 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 125 selfloop transitions, 78 changer transitions 0/208 dead transitions. [2024-10-13 12:43:31,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 208 transitions, 1675 flow [2024-10-13 12:43:31,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:43:31,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:43:31,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-10-13 12:43:31,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3654545454545455 [2024-10-13 12:43:31,535 INFO L175 Difference]: Start difference. First operand has 103 places, 160 transitions, 1064 flow. Second operand 10 states and 201 transitions. [2024-10-13 12:43:31,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 208 transitions, 1675 flow [2024-10-13 12:43:31,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 208 transitions, 1659 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:43:31,572 INFO L231 Difference]: Finished difference. Result has 111 places, 143 transitions, 1081 flow [2024-10-13 12:43:31,572 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1081, PETRI_PLACES=111, PETRI_TRANSITIONS=143} [2024-10-13 12:43:31,573 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2024-10-13 12:43:31,573 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 143 transitions, 1081 flow [2024-10-13 12:43:31,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.785714285714286) internal successors, (179), 14 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:31,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:31,574 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:31,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-13 12:43:31,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:31,774 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-13 12:43:31,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash 504461603, now seen corresponding path program 1 times [2024-10-13 12:43:31,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:31,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773872461] [2024-10-13 12:43:31,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:31,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:31,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:31,777 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:31,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-13 12:43:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:31,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-13 12:43:31,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:31,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-13 12:43:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 12:43:32,038 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:43:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 12:43:32,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:43:32,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773872461] [2024-10-13 12:43:32,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773872461] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:43:32,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:43:32,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:43:32,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109468983] [2024-10-13 12:43:32,323 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:43:32,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:43:32,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:43:32,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:43:32,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:43:32,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2024-10-13 12:43:32,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 143 transitions, 1081 flow. Second operand has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:32,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:32,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2024-10-13 12:43:32,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:36,563 INFO L124 PetriNetUnfolderBase]: 16467/23810 cut-off events. [2024-10-13 12:43:36,563 INFO L125 PetriNetUnfolderBase]: For 17728/18298 co-relation queries the response was YES. [2024-10-13 12:43:36,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68812 conditions, 23810 events. 16467/23810 cut-off events. For 17728/18298 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 151754 event pairs, 3599 based on Foata normal form. 1216/21730 useless extension candidates. Maximal degree in co-relation 68675. Up to 6676 conditions per place. [2024-10-13 12:43:36,767 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 278 selfloop transitions, 39 changer transitions 0/322 dead transitions. [2024-10-13 12:43:36,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 322 transitions, 2280 flow [2024-10-13 12:43:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 12:43:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 12:43:36,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 330 transitions. [2024-10-13 12:43:36,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 12:43:36,770 INFO L175 Difference]: Start difference. First operand has 111 places, 143 transitions, 1081 flow. Second operand 12 states and 330 transitions. [2024-10-13 12:43:36,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 322 transitions, 2280 flow [2024-10-13 12:43:36,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 322 transitions, 2248 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 12:43:36,844 INFO L231 Difference]: Finished difference. Result has 121 places, 156 transitions, 1267 flow [2024-10-13 12:43:36,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1267, PETRI_PLACES=121, PETRI_TRANSITIONS=156} [2024-10-13 12:43:36,844 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 65 predicate places. [2024-10-13 12:43:36,844 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 156 transitions, 1267 flow [2024-10-13 12:43:36,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:36,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:36,845 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:36,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-13 12:43:37,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:37,046 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-13 12:43:37,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:37,046 INFO L85 PathProgramCache]: Analyzing trace with hash 504461601, now seen corresponding path program 1 times [2024-10-13 12:43:37,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:37,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963224469] [2024-10-13 12:43:37,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:37,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:37,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:37,050 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:37,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-13 12:43:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:37,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 12:43:37,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:43:37,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:43:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:43:37,414 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:43:37,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963224469] [2024-10-13 12:43:37,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963224469] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:43:37,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:43:37,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-10-13 12:43:37,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501715278] [2024-10-13 12:43:37,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:43:37,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:43:37,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:43:37,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:43:37,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:43:37,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2024-10-13 12:43:37,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 156 transitions, 1267 flow. Second operand has 14 states, 14 states have (on average 12.928571428571429) internal successors, (181), 14 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:37,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:37,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2024-10-13 12:43:37,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:39,811 INFO L124 PetriNetUnfolderBase]: 11643/16823 cut-off events. [2024-10-13 12:43:39,811 INFO L125 PetriNetUnfolderBase]: For 17890/18527 co-relation queries the response was YES. [2024-10-13 12:43:39,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52026 conditions, 16823 events. 11643/16823 cut-off events. For 17890/18527 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 101822 event pairs, 8661 based on Foata normal form. 132/14252 useless extension candidates. Maximal degree in co-relation 51883. Up to 14023 conditions per place. [2024-10-13 12:43:39,991 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 113 selfloop transitions, 83 changer transitions 0/201 dead transitions. [2024-10-13 12:43:39,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 201 transitions, 1782 flow [2024-10-13 12:43:39,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:43:39,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:43:39,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-10-13 12:43:39,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3652892561983471 [2024-10-13 12:43:39,993 INFO L175 Difference]: Start difference. First operand has 121 places, 156 transitions, 1267 flow. Second operand 11 states and 221 transitions. [2024-10-13 12:43:39,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 201 transitions, 1782 flow [2024-10-13 12:43:40,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 201 transitions, 1732 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-10-13 12:43:40,368 INFO L231 Difference]: Finished difference. Result has 130 places, 155 transitions, 1405 flow [2024-10-13 12:43:40,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1405, PETRI_PLACES=130, PETRI_TRANSITIONS=155} [2024-10-13 12:43:40,369 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 74 predicate places. [2024-10-13 12:43:40,369 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 155 transitions, 1405 flow [2024-10-13 12:43:40,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.928571428571429) internal successors, (181), 14 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:40,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:40,369 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:40,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2024-10-13 12:43:40,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:40,570 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-13 12:43:40,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:40,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1361191813, now seen corresponding path program 1 times [2024-10-13 12:43:40,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:40,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259936171] [2024-10-13 12:43:40,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:40,571 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:40,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:40,574 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:40,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-13 12:43:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:40,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 12:43:40,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:40,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-13 12:43:40,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-13 12:43:40,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:43:40,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-13 12:43:40,793 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-13 12:43:40,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-13 12:43:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:43:40,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:43:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:43:41,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:43:41,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259936171] [2024-10-13 12:43:41,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259936171] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:43:41,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:43:41,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:43:41,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268304434] [2024-10-13 12:43:41,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:43:41,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:43:41,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:43:41,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:43:41,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:43:42,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 55 [2024-10-13 12:43:42,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 155 transitions, 1405 flow. Second operand has 14 states, 14 states have (on average 10.0) internal successors, (140), 14 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:42,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:43:42,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 55 [2024-10-13 12:43:42,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:43:50,704 INFO L124 PetriNetUnfolderBase]: 10637/15991 cut-off events. [2024-10-13 12:43:50,704 INFO L125 PetriNetUnfolderBase]: For 34112/34964 co-relation queries the response was YES. [2024-10-13 12:43:50,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49175 conditions, 15991 events. 10637/15991 cut-off events. For 34112/34964 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 101624 event pairs, 5277 based on Foata normal form. 200/13666 useless extension candidates. Maximal degree in co-relation 49013. Up to 4647 conditions per place. [2024-10-13 12:43:50,797 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 191 selfloop transitions, 96 changer transitions 0/295 dead transitions. [2024-10-13 12:43:50,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 295 transitions, 2797 flow [2024-10-13 12:43:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 12:43:50,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 12:43:50,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 349 transitions. [2024-10-13 12:43:50,801 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3021645021645022 [2024-10-13 12:43:50,801 INFO L175 Difference]: Start difference. First operand has 130 places, 155 transitions, 1405 flow. Second operand 21 states and 349 transitions. [2024-10-13 12:43:50,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 295 transitions, 2797 flow [2024-10-13 12:43:50,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 295 transitions, 2644 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-13 12:43:50,879 INFO L231 Difference]: Finished difference. Result has 146 places, 176 transitions, 1614 flow [2024-10-13 12:43:50,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1614, PETRI_PLACES=146, PETRI_TRANSITIONS=176} [2024-10-13 12:43:50,880 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 90 predicate places. [2024-10-13 12:43:50,881 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 176 transitions, 1614 flow [2024-10-13 12:43:50,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.0) internal successors, (140), 14 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:43:50,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:43:50,881 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:43:50,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-13 12:43:51,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:51,082 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-13 12:43:51,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:43:51,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1361191811, now seen corresponding path program 1 times [2024-10-13 12:43:51,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:43:51,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552291279] [2024-10-13 12:43:51,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:43:51,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:43:51,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:43:51,085 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:43:51,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-13 12:43:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:43:51,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 12:43:51,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:43:51,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-13 12:43:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:43:51,449 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:44:04,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:44:04,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:44:04,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552291279] [2024-10-13 12:44:04,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552291279] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:44:04,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:44:04,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:44:04,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266754884] [2024-10-13 12:44:04,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:44:04,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:44:04,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:44:04,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:44:04,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=137, Unknown=3, NotChecked=0, Total=182 [2024-10-13 12:44:08,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:44:12,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:44:16,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:44:21,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:44:25,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-13 12:44:29,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1]