./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-multiply-verify.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-multiply-verify.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 d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:44:30,157 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:44:30,206 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:44:30,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:44:30,212 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:44:30,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:44:30,229 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:44:30,230 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:44:30,230 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:44:30,230 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:44:30,231 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:44:30,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:44:30,231 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:44:30,232 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:44:30,232 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:44:30,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:44:30,233 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:44:30,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:44:30,233 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:44:30,233 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:44:30,234 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:44:30,236 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:44:30,236 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:44:30,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:44:30,237 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:44:30,237 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:44:30,237 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:44:30,237 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:44:30,238 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:44:30,238 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:44:30,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:44:30,238 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:44:30,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:44:30,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:44:30,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:44:30,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:44:30,241 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:44:30,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:44:30,242 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:44:30,242 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:44:30,242 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:44:30,242 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:44:30,242 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 [2024-10-13 12:44:30,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:44:30,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:44:30,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:44:30,463 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:44:30,463 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:44:30,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-10-13 12:44:31,645 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:44:31,788 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:44:31,789 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-10-13 12:44:31,795 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb331b2a/febfb33a5a7b424aa37fb0b5e75641fe/FLAG39d414084 [2024-10-13 12:44:32,201 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb331b2a/febfb33a5a7b424aa37fb0b5e75641fe [2024-10-13 12:44:32,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:44:32,204 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:44:32,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:44:32,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:44:32,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:44:32,210 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:44:32" (1/1) ... [2024-10-13 12:44:32,211 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c5cc0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:32, skipping insertion in model container [2024-10-13 12:44:32,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:44:32" (1/1) ... [2024-10-13 12:44:32,228 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:44:32,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:44:32,428 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 12:44:32,429 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@482cd050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:32, skipping insertion in model container [2024-10-13 12:44:32,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:44:32,429 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-13 12:44:32,430 INFO L158 Benchmark]: Toolchain (without parser) took 225.76ms. Allocated memory is still 155.2MB. Free memory was 84.7MB in the beginning and 122.0MB in the end (delta: -37.4MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2024-10-13 12:44:32,431 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 155.2MB. Free memory was 111.7MB in the beginning and 111.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:44:32,431 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.16ms. Allocated memory is still 155.2MB. Free memory was 84.6MB in the beginning and 122.5MB in the end (delta: -38.0MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2024-10-13 12:44:32,432 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 155.2MB. Free memory was 111.7MB in the beginning and 111.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.16ms. Allocated memory is still 155.2MB. Free memory was 84.6MB in the beginning and 122.5MB in the end (delta: -38.0MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 119]: 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-multiply-verify.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 d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:44:34,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:44:34,073 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-13 12:44:34,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:44:34,078 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:44:34,097 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:44:34,098 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:44:34,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:44:34,098 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:44:34,098 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:44:34,099 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:44:34,099 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:44:34,099 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:44:34,102 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:44:34,102 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:44:34,103 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:44:34,103 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:44:34,104 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:44:34,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:44:34,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:44:34,104 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:44:34,104 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:44:34,104 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:44:34,105 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:44:34,105 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:44:34,105 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-13 12:44:34,105 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:44:34,105 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-13 12:44:34,105 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:44:34,105 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:44:34,105 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:44:34,106 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:44:34,106 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:44:34,106 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:44:34,110 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:44:34,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:44:34,112 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:44:34,112 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:44:34,112 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-13 12:44:34,112 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-13 12:44:34,112 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:44:34,112 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:44:34,113 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:44:34,113 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:44:34,113 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-13 12:44:34,113 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 [2024-10-13 12:44:34,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:44:34,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:44:34,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:44:34,385 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:44:34,385 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:44:34,386 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-10-13 12:44:35,619 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:44:35,778 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:44:35,780 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-10-13 12:44:35,787 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a7b77c46/72c39d988782496cb352c4aee297e29b/FLAGfcf17d667 [2024-10-13 12:44:36,178 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a7b77c46/72c39d988782496cb352c4aee297e29b [2024-10-13 12:44:36,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:44:36,181 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:44:36,182 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:44:36,182 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:44:36,186 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:44:36,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:44:36" (1/1) ... [2024-10-13 12:44:36,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20046509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:36, skipping insertion in model container [2024-10-13 12:44:36,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:44:36" (1/1) ... [2024-10-13 12:44:36,205 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:44:36,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:44:36,391 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-13 12:44:36,394 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:44:36,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:44:36,413 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:44:36,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:44:36,456 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:44:36,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:36 WrapperNode [2024-10-13 12:44:36,457 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:44:36,458 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:44:36,458 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:44:36,458 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:44:36,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:36" (1/1) ... [2024-10-13 12:44:36,475 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:36" (1/1) ... [2024-10-13 12:44:36,499 INFO L138 Inliner]: procedures = 27, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 170 [2024-10-13 12:44:36,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:44:36,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:44:36,503 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:44:36,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:44:36,511 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:36" (1/1) ... [2024-10-13 12:44:36,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:36" (1/1) ... [2024-10-13 12:44:36,515 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:36" (1/1) ... [2024-10-13 12:44:36,534 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-13 12:44:36,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:36" (1/1) ... [2024-10-13 12:44:36,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:36" (1/1) ... [2024-10-13 12:44:36,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:36" (1/1) ... [2024-10-13 12:44:36,545 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:36" (1/1) ... [2024-10-13 12:44:36,549 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:36" (1/1) ... [2024-10-13 12:44:36,550 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:36" (1/1) ... [2024-10-13 12:44:36,552 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:44:36,557 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:44:36,557 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:44:36,557 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:44:36,558 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:36" (1/1) ... [2024-10-13 12:44:36,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:44:36,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:44:36,585 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 12:44:36,597 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 12:44:36,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:44:36,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-13 12:44:36,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-13 12:44:36,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-13 12:44:36,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-13 12:44:36,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:44:36,640 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:44:36,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:44:36,640 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:44:36,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 12:44:36,640 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 12:44:36,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:44:36,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:44:36,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 12:44:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:44:36,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:44:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-13 12:44:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-13 12:44:36,642 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 12:44:36,754 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:44:36,755 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:44:37,076 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:44:37,077 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:44:37,276 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:44:37,277 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 12:44:37,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:44:37 BoogieIcfgContainer [2024-10-13 12:44:37,278 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:44:37,280 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:44:37,281 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:44:37,283 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:44:37,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:44:36" (1/3) ... [2024-10-13 12:44:37,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49728479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:44:37, skipping insertion in model container [2024-10-13 12:44:37,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:44:36" (2/3) ... [2024-10-13 12:44:37,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49728479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:44:37, skipping insertion in model container [2024-10-13 12:44:37,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:44:37" (3/3) ... [2024-10-13 12:44:37,285 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2024-10-13 12:44:37,298 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:44:37,298 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-13 12:44:37,298 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:44:37,345 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 12:44:37,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 49 transitions, 119 flow [2024-10-13 12:44:37,405 INFO L124 PetriNetUnfolderBase]: 3/46 cut-off events. [2024-10-13 12:44:37,405 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 12:44:37,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 3/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-10-13 12:44:37,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 49 transitions, 119 flow [2024-10-13 12:44:37,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 45 transitions, 108 flow [2024-10-13 12:44:37,420 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:44:37,425 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;@21c04abe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:44:37,425 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-13 12:44:37,428 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:44:37,429 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-13 12:44:37,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:44:37,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:44:37,429 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:44:37,430 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-13 12:44:37,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:44:37,434 INFO L85 PathProgramCache]: Analyzing trace with hash 524572, now seen corresponding path program 1 times [2024-10-13 12:44:37,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:44:37,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561586892] [2024-10-13 12:44:37,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:44:37,443 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 12:44:37,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:44:37,445 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 12:44:37,446 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 12:44:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:44:37,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:44:37,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:44:37,547 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 12:44:37,559 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 12:44:37,559 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:44:37,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:44:37,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561586892] [2024-10-13 12:44:37,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561586892] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:44:37,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:44:37,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:44:37,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528465290] [2024-10-13 12:44:37,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:44:37,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:44:37,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:44:37,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:44:37,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:44:37,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-10-13 12:44:37,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 12:44:37,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:44:37,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-10-13 12:44:37,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:44:37,890 INFO L124 PetriNetUnfolderBase]: 886/1433 cut-off events. [2024-10-13 12:44:37,890 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-10-13 12:44:37,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2898 conditions, 1433 events. 886/1433 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7234 event pairs, 768 based on Foata normal form. 1/1098 useless extension candidates. Maximal degree in co-relation 2728. Up to 1319 conditions per place. [2024-10-13 12:44:37,912 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 28 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-10-13 12:44:37,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 162 flow [2024-10-13 12:44:37,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:44:37,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:44:37,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-10-13 12:44:37,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2024-10-13 12:44:37,924 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 108 flow. Second operand 3 states and 80 transitions. [2024-10-13 12:44:37,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 162 flow [2024-10-13 12:44:37,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 12:44:37,931 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 94 flow [2024-10-13 12:44:37,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2024-10-13 12:44:37,938 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2024-10-13 12:44:37,938 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 94 flow [2024-10-13 12:44:37,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 12:44:37,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:44:37,938 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:44:37,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-13 12:44:38,140 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 12:44:38,142 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-13 12:44:38,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:44:38,142 INFO L85 PathProgramCache]: Analyzing trace with hash 524573, now seen corresponding path program 1 times [2024-10-13 12:44:38,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:44:38,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347903383] [2024-10-13 12:44:38,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:44:38,143 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 12:44:38,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:44:38,144 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 12:44:38,145 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 12:44:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:44:38,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:44:38,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:44:38,224 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 12:44:38,299 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 12:44:38,299 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:44:38,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:44:38,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347903383] [2024-10-13 12:44:38,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347903383] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:44:38,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:44:38,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:44:38,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114724940] [2024-10-13 12:44:38,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:44:38,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:44:38,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:44:38,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:44:38,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:44:38,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-10-13 12:44:38,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 12:44:38,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:44:38,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-10-13 12:44:38,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:44:38,608 INFO L124 PetriNetUnfolderBase]: 887/1436 cut-off events. [2024-10-13 12:44:38,608 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-13 12:44:38,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2824 conditions, 1436 events. 887/1436 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7264 event pairs, 768 based on Foata normal form. 0/1100 useless extension candidates. Maximal degree in co-relation 2802. Up to 1324 conditions per place. [2024-10-13 12:44:38,619 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 30 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-10-13 12:44:38,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 170 flow [2024-10-13 12:44:38,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:44:38,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:44:38,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-10-13 12:44:38,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5051020408163265 [2024-10-13 12:44:38,623 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 94 flow. Second operand 4 states and 99 transitions. [2024-10-13 12:44:38,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 170 flow [2024-10-13 12:44:38,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:44:38,625 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 117 flow [2024-10-13 12:44:38,625 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-10-13 12:44:38,626 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-10-13 12:44:38,626 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 117 flow [2024-10-13 12:44:38,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 12:44:38,626 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:44:38,627 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-13 12:44:38,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-13 12:44:38,827 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 12:44:38,828 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-13 12:44:38,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:44:38,828 INFO L85 PathProgramCache]: Analyzing trace with hash 504130857, now seen corresponding path program 1 times [2024-10-13 12:44:38,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:44:38,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019877356] [2024-10-13 12:44:38,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:44:38,829 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 12:44:38,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:44:38,831 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 12:44:38,832 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 12:44:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:44:38,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:44:38,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:44:38,898 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 12:44:39,034 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 12:44:39,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:44:39,273 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 12:44:39,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:44:39,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019877356] [2024-10-13 12:44:39,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019877356] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:44:39,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:44:39,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-13 12:44:39,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632639831] [2024-10-13 12:44:39,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:44:39,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:44:39,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:44:39,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:44:39,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:44:39,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-10-13 12:44:39,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 117 flow. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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 12:44:39,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:44:39,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-10-13 12:44:39,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:44:39,964 INFO L124 PetriNetUnfolderBase]: 890/1445 cut-off events. [2024-10-13 12:44:39,964 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-13 12:44:39,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2861 conditions, 1445 events. 890/1445 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7289 event pairs, 768 based on Foata normal form. 0/1105 useless extension candidates. Maximal degree in co-relation 2809. Up to 1327 conditions per place. [2024-10-13 12:44:39,979 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 30 selfloop transitions, 13 changer transitions 0/54 dead transitions. [2024-10-13 12:44:39,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 239 flow [2024-10-13 12:44:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:44:39,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:44:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-10-13 12:44:39,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4204081632653061 [2024-10-13 12:44:39,981 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 117 flow. Second operand 10 states and 206 transitions. [2024-10-13 12:44:39,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 239 flow [2024-10-13 12:44:39,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:44:39,986 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 194 flow [2024-10-13 12:44:39,986 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=194, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-10-13 12:44:39,987 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-10-13 12:44:39,987 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 194 flow [2024-10-13 12:44:39,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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 12:44:39,990 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:44:39,990 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 12:44:39,993 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 12:44:40,191 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 12:44:40,194 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-13 12:44:40,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:44:40,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1548629745, now seen corresponding path program 1 times [2024-10-13 12:44:40,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:44:40,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392963237] [2024-10-13 12:44:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:44:40,195 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 12:44:40,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:44:40,197 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 12:44:40,198 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 12:44:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:44:40,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:44:40,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:44:40,246 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 12:44:40,263 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 12:44:40,264 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:44:40,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:44:40,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392963237] [2024-10-13 12:44:40,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392963237] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:44:40,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:44:40,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:44:40,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399061843] [2024-10-13 12:44:40,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:44:40,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:44:40,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:44:40,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:44:40,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:44:40,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-10-13 12:44:40,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 12:44:40,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:44:40,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-10-13 12:44:40,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:44:40,447 INFO L124 PetriNetUnfolderBase]: 855/1388 cut-off events. [2024-10-13 12:44:40,447 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-13 12:44:40,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2747 conditions, 1388 events. 855/1388 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6296 event pairs, 724 based on Foata normal form. 0/1228 useless extension candidates. Maximal degree in co-relation 2713. Up to 1257 conditions per place. [2024-10-13 12:44:40,453 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 35 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2024-10-13 12:44:40,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 268 flow [2024-10-13 12:44:40,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:44:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:44:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-10-13 12:44:40,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4336734693877551 [2024-10-13 12:44:40,454 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 194 flow. Second operand 4 states and 85 transitions. [2024-10-13 12:44:40,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 268 flow [2024-10-13 12:44:40,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 238 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-13 12:44:40,456 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 168 flow [2024-10-13 12:44:40,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-10-13 12:44:40,457 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-10-13 12:44:40,457 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 168 flow [2024-10-13 12:44:40,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 12:44:40,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:44:40,469 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 12:44:40,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-13 12:44:40,670 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 12:44:40,670 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-13 12:44:40,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:44:40,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1548629744, now seen corresponding path program 1 times [2024-10-13 12:44:40,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:44:40,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427224101] [2024-10-13 12:44:40,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:44:40,671 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:44:40,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:44:40,673 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 12:44:40,674 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 12:44:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:44:40,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 12:44:40,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:44:40,751 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 12:44:40,751 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:44:40,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:44:40,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427224101] [2024-10-13 12:44:40,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427224101] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:44:40,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:44:40,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:44:40,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818911713] [2024-10-13 12:44:40,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:44:40,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:44:40,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:44:40,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:44:40,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:44:40,761 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-10-13 12:44:40,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 12:44:40,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:44:40,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-10-13 12:44:40,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:44:40,934 INFO L124 PetriNetUnfolderBase]: 731/1200 cut-off events. [2024-10-13 12:44:40,934 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-13 12:44:40,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 1200 events. 731/1200 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5448 event pairs, 600 based on Foata normal form. 35/1088 useless extension candidates. Maximal degree in co-relation 2372. Up to 994 conditions per place. [2024-10-13 12:44:40,939 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 37 selfloop transitions, 2 changer transitions 13/62 dead transitions. [2024-10-13 12:44:40,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 299 flow [2024-10-13 12:44:40,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:44:40,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:44:40,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-10-13 12:44:40,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5918367346938775 [2024-10-13 12:44:40,942 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 168 flow. Second operand 4 states and 116 transitions. [2024-10-13 12:44:40,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 299 flow [2024-10-13 12:44:40,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:44:40,945 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 170 flow [2024-10-13 12:44:40,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-10-13 12:44:40,945 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-10-13 12:44:40,946 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 170 flow [2024-10-13 12:44:40,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 12:44:40,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:44:40,946 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:44:40,949 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 12:44:41,146 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 12:44:41,147 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-13 12:44:41,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:44:41,147 INFO L85 PathProgramCache]: Analyzing trace with hash -934588028, now seen corresponding path program 1 times [2024-10-13 12:44:41,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:44:41,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027723364] [2024-10-13 12:44:41,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:44:41,148 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 12:44:41,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:44:41,149 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 12:44:41,151 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 12:44:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:44:41,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 12:44:41,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:44:41,206 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 12:44:41,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:44:41,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:44:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:44:41,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:44:41,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027723364] [2024-10-13 12:44:41,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027723364] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:44:41,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:44:41,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-13 12:44:41,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564622070] [2024-10-13 12:44:41,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:44:41,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:44:41,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:44:41,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:44:41,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:44:42,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-10-13 12:44:42,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 170 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 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 12:44:42,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:44:42,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-10-13 12:44:42,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:44:43,875 INFO L124 PetriNetUnfolderBase]: 1313/2154 cut-off events. [2024-10-13 12:44:43,875 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2024-10-13 12:44:43,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4759 conditions, 2154 events. 1313/2154 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10657 event pairs, 1082 based on Foata normal form. 41/2028 useless extension candidates. Maximal degree in co-relation 4738. Up to 984 conditions per place. [2024-10-13 12:44:43,884 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 51 selfloop transitions, 10 changer transitions 19/89 dead transitions. [2024-10-13 12:44:43,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 431 flow [2024-10-13 12:44:43,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:44:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:44:43,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-10-13 12:44:43,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-10-13 12:44:43,887 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 170 flow. Second operand 9 states and 228 transitions. [2024-10-13 12:44:43,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 431 flow [2024-10-13 12:44:43,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 89 transitions, 427 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:44:43,890 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 193 flow [2024-10-13 12:44:43,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=193, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2024-10-13 12:44:43,892 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2024-10-13 12:44:43,893 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 193 flow [2024-10-13 12:44:43,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 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 12:44:43,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:44:43,893 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-13 12:44:43,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-13 12:44:44,093 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 12:44:44,094 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-13 12:44:44,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:44:44,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1644937037, now seen corresponding path program 2 times [2024-10-13 12:44:44,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:44:44,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576912508] [2024-10-13 12:44:44,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:44:44,095 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 12:44:44,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:44:44,096 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 12:44:44,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-13 12:44:44,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:44:44,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:44:44,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:44:44,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:44:44,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-13 12:44:44,351 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 12:44:44,351 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:44:44,813 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 12:44:44,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:44:44,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576912508] [2024-10-13 12:44:44,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576912508] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:44:44,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:44:44,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:44:44,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310819052] [2024-10-13 12:44:44,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:44:44,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:44:44,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:44:44,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:44:44,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:44:45,320 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-10-13 12:44:45,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 193 flow. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 14 states have internal predecessors, (246), 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 12:44:45,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:44:45,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-10-13 12:44:45,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:44:47,215 INFO L124 PetriNetUnfolderBase]: 1128/1824 cut-off events. [2024-10-13 12:44:47,215 INFO L125 PetriNetUnfolderBase]: For 847/847 co-relation queries the response was YES. [2024-10-13 12:44:47,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4452 conditions, 1824 events. 1128/1824 cut-off events. For 847/847 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9153 event pairs, 934 based on Foata normal form. 6/1719 useless extension candidates. Maximal degree in co-relation 4414. Up to 1687 conditions per place. [2024-10-13 12:44:47,227 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 28 selfloop transitions, 29 changer transitions 0/66 dead transitions. [2024-10-13 12:44:47,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 66 transitions, 421 flow [2024-10-13 12:44:47,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 12:44:47,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 12:44:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 415 transitions. [2024-10-13 12:44:47,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3849721706864564 [2024-10-13 12:44:47,230 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 193 flow. Second operand 22 states and 415 transitions. [2024-10-13 12:44:47,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 66 transitions, 421 flow [2024-10-13 12:44:47,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 66 transitions, 406 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-10-13 12:44:47,238 INFO L231 Difference]: Finished difference. Result has 85 places, 66 transitions, 380 flow [2024-10-13 12:44:47,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=380, PETRI_PLACES=85, PETRI_TRANSITIONS=66} [2024-10-13 12:44:47,239 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2024-10-13 12:44:47,239 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 66 transitions, 380 flow [2024-10-13 12:44:47,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 14 states have internal predecessors, (246), 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 12:44:47,239 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:44:47,240 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2024-10-13 12:44:47,243 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 12:44:47,440 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 12:44:47,441 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-13 12:44:47,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:44:47,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1253892896, now seen corresponding path program 2 times [2024-10-13 12:44:47,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:44:47,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172732257] [2024-10-13 12:44:47,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:44:47,441 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 12:44:47,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:44:47,443 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 12:44:47,444 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 12:44:47,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 12:44:47,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:44:47,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:44:47,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:44:47,502 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 12:44:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 12:44:47,594 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:44:47,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:44:47,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172732257] [2024-10-13 12:44:47,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172732257] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:44:47,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:44:47,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:44:47,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214599600] [2024-10-13 12:44:47,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:44:47,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:44:47,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:44:47,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:44:47,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:44:47,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-10-13 12:44:47,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 66 transitions, 380 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:44:47,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:44:47,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-10-13 12:44:47,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:44:47,799 INFO L124 PetriNetUnfolderBase]: 934/1537 cut-off events. [2024-10-13 12:44:47,799 INFO L125 PetriNetUnfolderBase]: For 426/426 co-relation queries the response was YES. [2024-10-13 12:44:47,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3434 conditions, 1537 events. 934/1537 cut-off events. For 426/426 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7538 event pairs, 756 based on Foata normal form. 85/1516 useless extension candidates. Maximal degree in co-relation 3384. Up to 1395 conditions per place. [2024-10-13 12:44:47,819 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 44 selfloop transitions, 10 changer transitions 0/64 dead transitions. [2024-10-13 12:44:47,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 64 transitions, 476 flow [2024-10-13 12:44:47,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:44:47,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:44:47,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-10-13 12:44:47,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-10-13 12:44:47,821 INFO L175 Difference]: Start difference. First operand has 85 places, 66 transitions, 380 flow. Second operand 4 states and 96 transitions. [2024-10-13 12:44:47,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 64 transitions, 476 flow [2024-10-13 12:44:47,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 64 transitions, 398 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-10-13 12:44:47,823 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 310 flow [2024-10-13 12:44:47,823 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-10-13 12:44:47,824 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2024-10-13 12:44:47,824 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 310 flow [2024-10-13 12:44:47,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:44:47,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:44:47,824 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:44:47,829 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 12:44:48,027 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 12:44:48,028 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-13 12:44:48,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:44:48,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1388094242, now seen corresponding path program 1 times [2024-10-13 12:44:48,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:44:48,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336793622] [2024-10-13 12:44:48,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:44:48,029 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 12:44:48,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:44:48,032 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 12:44:48,032 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 12:44:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:44:48,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 12:44:48,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:44:48,103 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 12:44:48,196 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 13 treesize of output 9 [2024-10-13 12:44:48,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:44:48,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:44:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:44:48,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:44:48,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336793622] [2024-10-13 12:44:48,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336793622] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:44:48,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:44:48,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-10-13 12:44:48,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883170562] [2024-10-13 12:44:48,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:44:48,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:44:48,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:44:48,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:44:48,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:44:48,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-10-13 12:44:48,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 310 flow. Second operand has 10 states, 10 states have (on average 19.4) internal successors, (194), 10 states have internal predecessors, (194), 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 12:44:48,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:44:48,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-10-13 12:44:48,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:44:49,115 INFO L124 PetriNetUnfolderBase]: 883/1630 cut-off events. [2024-10-13 12:44:49,115 INFO L125 PetriNetUnfolderBase]: For 277/284 co-relation queries the response was YES. [2024-10-13 12:44:49,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3459 conditions, 1630 events. 883/1630 cut-off events. For 277/284 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8711 event pairs, 248 based on Foata normal form. 72/1621 useless extension candidates. Maximal degree in co-relation 3416. Up to 880 conditions per place. [2024-10-13 12:44:49,121 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 75 selfloop transitions, 9 changer transitions 0/94 dead transitions. [2024-10-13 12:44:49,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 94 transitions, 552 flow [2024-10-13 12:44:49,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 12:44:49,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 12:44:49,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-10-13 12:44:49,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5364431486880467 [2024-10-13 12:44:49,122 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 310 flow. Second operand 7 states and 184 transitions. [2024-10-13 12:44:49,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 94 transitions, 552 flow [2024-10-13 12:44:49,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 94 transitions, 541 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:44:49,125 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 349 flow [2024-10-13 12:44:49,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=349, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2024-10-13 12:44:49,125 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 30 predicate places. [2024-10-13 12:44:49,125 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 349 flow [2024-10-13 12:44:49,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.4) internal successors, (194), 10 states have internal predecessors, (194), 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 12:44:49,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:44:49,126 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:44:49,131 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 12:44:49,326 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 12:44:49,326 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-13 12:44:49,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:44:49,327 INFO L85 PathProgramCache]: Analyzing trace with hash 252555195, now seen corresponding path program 1 times [2024-10-13 12:44:49,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:44:49,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176124707] [2024-10-13 12:44:49,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:44:49,327 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 12:44:49,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:44:49,328 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 12:44:49,329 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 12:44:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:44:49,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 12:44:49,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:44:49,403 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 12:44:49,544 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 18 treesize of output 12 [2024-10-13 12:44:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:44:49,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:44:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:44:50,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:44:50,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176124707] [2024-10-13 12:44:50,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176124707] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:44:50,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:44:50,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-10-13 12:44:50,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302959177] [2024-10-13 12:44:50,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:44:50,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:44:50,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:44:50,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:44:50,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:44:50,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-10-13 12:44:50,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 349 flow. Second operand has 14 states, 14 states have (on average 19.428571428571427) internal successors, (272), 14 states have internal predecessors, (272), 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 12:44:50,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:44:50,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-10-13 12:44:50,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:44:51,324 INFO L124 PetriNetUnfolderBase]: 655/1205 cut-off events. [2024-10-13 12:44:51,325 INFO L125 PetriNetUnfolderBase]: For 735/746 co-relation queries the response was YES. [2024-10-13 12:44:51,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2938 conditions, 1205 events. 655/1205 cut-off events. For 735/746 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5682 event pairs, 132 based on Foata normal form. 60/1217 useless extension candidates. Maximal degree in co-relation 2892. Up to 292 conditions per place. [2024-10-13 12:44:51,330 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 95 selfloop transitions, 20 changer transitions 0/125 dead transitions. [2024-10-13 12:44:51,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 125 transitions, 740 flow [2024-10-13 12:44:51,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 12:44:51,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 12:44:51,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-10-13 12:44:51,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5231910946196661 [2024-10-13 12:44:51,331 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 349 flow. Second operand 11 states and 282 transitions. [2024-10-13 12:44:51,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 125 transitions, 740 flow [2024-10-13 12:44:51,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 125 transitions, 717 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-10-13 12:44:51,334 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 438 flow [2024-10-13 12:44:51,334 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=438, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-10-13 12:44:51,335 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 40 predicate places. [2024-10-13 12:44:51,335 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 438 flow [2024-10-13 12:44:51,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.428571428571427) internal successors, (272), 14 states have internal predecessors, (272), 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 12:44:51,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:44:51,335 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:44:51,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-13 12:44:51,536 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 12:44:51,536 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-13 12:44:51,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:44:51,536 INFO L85 PathProgramCache]: Analyzing trace with hash 424953555, now seen corresponding path program 1 times [2024-10-13 12:44:51,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:44:51,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268443642] [2024-10-13 12:44:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:44:51,537 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 12:44:51,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:44:51,539 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 12:44:51,540 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 12:44:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:44:51,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:44:51,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:44:51,619 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 12:44:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:44:51,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:44:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:44:52,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:44:52,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268443642] [2024-10-13 12:44:52,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268443642] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:44:52,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:44:52,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:44:52,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832615985] [2024-10-13 12:44:52,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:44:52,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:44:52,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:44:52,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:44:52,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:44:53,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-10-13 12:44:53,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 438 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 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 12:44:53,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:44:53,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-10-13 12:44:53,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:44:54,765 INFO L124 PetriNetUnfolderBase]: 989/1720 cut-off events. [2024-10-13 12:44:54,765 INFO L125 PetriNetUnfolderBase]: For 1449/1456 co-relation queries the response was YES. [2024-10-13 12:44:54,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4408 conditions, 1720 events. 989/1720 cut-off events. For 1449/1456 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7981 event pairs, 370 based on Foata normal form. 4/1665 useless extension candidates. Maximal degree in co-relation 4357. Up to 373 conditions per place. [2024-10-13 12:44:54,772 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 112 selfloop transitions, 34 changer transitions 0/152 dead transitions. [2024-10-13 12:44:54,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 152 transitions, 949 flow [2024-10-13 12:44:54,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 12:44:54,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 12:44:54,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 311 transitions. [2024-10-13 12:44:54,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45335276967930027 [2024-10-13 12:44:54,774 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 438 flow. Second operand 14 states and 311 transitions. [2024-10-13 12:44:54,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 152 transitions, 949 flow [2024-10-13 12:44:54,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 152 transitions, 905 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-10-13 12:44:54,779 INFO L231 Difference]: Finished difference. Result has 106 places, 80 transitions, 563 flow [2024-10-13 12:44:54,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=563, PETRI_PLACES=106, PETRI_TRANSITIONS=80} [2024-10-13 12:44:54,780 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 54 predicate places. [2024-10-13 12:44:54,780 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 80 transitions, 563 flow [2024-10-13 12:44:54,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 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 12:44:54,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:44:54,781 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:44:54,784 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 12:44:54,981 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 12:44:54,981 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-13 12:44:54,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:44:54,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1092545836, now seen corresponding path program 1 times [2024-10-13 12:44:54,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:44:54,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407787807] [2024-10-13 12:44:54,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:44:54,982 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 12:44:54,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:44:54,986 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 12:44:54,987 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 12:44:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:44:55,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 12:44:55,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:44:55,063 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 12:44:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:44:55,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:44:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:44:56,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:44:56,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407787807] [2024-10-13 12:44:56,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407787807] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:44:56,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:44:56,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2024-10-13 12:44:56,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351833591] [2024-10-13 12:44:56,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:44:56,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 12:44:56,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:44:56,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 12:44:56,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-10-13 12:44:57,371 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-10-13 12:44:57,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 80 transitions, 563 flow. Second operand has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 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 12:44:57,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:44:57,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-10-13 12:44:57,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:44:59,614 INFO L124 PetriNetUnfolderBase]: 1158/2081 cut-off events. [2024-10-13 12:44:59,615 INFO L125 PetriNetUnfolderBase]: For 2564/2568 co-relation queries the response was YES. [2024-10-13 12:44:59,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5496 conditions, 2081 events. 1158/2081 cut-off events. For 2564/2568 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 10202 event pairs, 612 based on Foata normal form. 26/2061 useless extension candidates. Maximal degree in co-relation 5438. Up to 698 conditions per place. [2024-10-13 12:44:59,624 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 117 selfloop transitions, 30 changer transitions 0/155 dead transitions. [2024-10-13 12:44:59,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 155 transitions, 1066 flow [2024-10-13 12:44:59,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 12:44:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 12:44:59,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 356 transitions. [2024-10-13 12:44:59,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45408163265306123 [2024-10-13 12:44:59,626 INFO L175 Difference]: Start difference. First operand has 106 places, 80 transitions, 563 flow. Second operand 16 states and 356 transitions. [2024-10-13 12:44:59,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 155 transitions, 1066 flow [2024-10-13 12:44:59,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 155 transitions, 1028 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-10-13 12:44:59,634 INFO L231 Difference]: Finished difference. Result has 118 places, 84 transitions, 650 flow [2024-10-13 12:44:59,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=650, PETRI_PLACES=118, PETRI_TRANSITIONS=84} [2024-10-13 12:44:59,634 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 66 predicate places. [2024-10-13 12:44:59,634 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 84 transitions, 650 flow [2024-10-13 12:44:59,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 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 12:44:59,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:44:59,635 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-13 12:44:59,639 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 12:44:59,835 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 12:44:59,836 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-13 12:44:59,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:44:59,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1512514197, now seen corresponding path program 3 times [2024-10-13 12:44:59,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:44:59,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593223240] [2024-10-13 12:44:59,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:44:59,837 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 12:44:59,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:44:59,838 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 12:44:59,839 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 12:45:00,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-13 12:45:00,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:45:00,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 12:45:00,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:45:00,024 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 12:45:00,377 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:45:00,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:45:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:45:01,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:45:01,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593223240] [2024-10-13 12:45:01,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593223240] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:45:01,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:45:01,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-13 12:45:01,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876135578] [2024-10-13 12:45:01,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:45:01,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-13 12:45:01,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:45:01,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-13 12:45:01,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-13 12:45:03,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-10-13 12:45:03,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 84 transitions, 650 flow. Second operand has 26 states, 26 states have (on average 17.76923076923077) internal successors, (462), 26 states have internal predecessors, (462), 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 12:45:03,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:45:03,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-10-13 12:45:03,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:45:15,474 INFO L124 PetriNetUnfolderBase]: 1121/2031 cut-off events. [2024-10-13 12:45:15,474 INFO L125 PetriNetUnfolderBase]: For 3964/3964 co-relation queries the response was YES. [2024-10-13 12:45:15,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5859 conditions, 2031 events. 1121/2031 cut-off events. For 3964/3964 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9869 event pairs, 828 based on Foata normal form. 12/1978 useless extension candidates. Maximal degree in co-relation 5795. Up to 1794 conditions per place. [2024-10-13 12:45:15,483 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 45 selfloop transitions, 65 changer transitions 0/120 dead transitions. [2024-10-13 12:45:15,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 120 transitions, 1230 flow [2024-10-13 12:45:15,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-13 12:45:15,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-13 12:45:15,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 839 transitions. [2024-10-13 12:45:15,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37222715173025733 [2024-10-13 12:45:15,486 INFO L175 Difference]: Start difference. First operand has 118 places, 84 transitions, 650 flow. Second operand 46 states and 839 transitions. [2024-10-13 12:45:15,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 120 transitions, 1230 flow [2024-10-13 12:45:15,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 120 transitions, 1161 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-10-13 12:45:15,496 INFO L231 Difference]: Finished difference. Result has 163 places, 120 transitions, 1125 flow [2024-10-13 12:45:15,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1125, PETRI_PLACES=163, PETRI_TRANSITIONS=120} [2024-10-13 12:45:15,497 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 111 predicate places. [2024-10-13 12:45:15,497 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 120 transitions, 1125 flow [2024-10-13 12:45:15,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 17.76923076923077) internal successors, (462), 26 states have internal predecessors, (462), 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 12:45:15,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:45:15,498 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:45:15,503 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 12:45:15,699 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 12:45:15,699 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-13 12:45:15,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:45:15,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1297453217, now seen corresponding path program 2 times [2024-10-13 12:45:15,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:45:15,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116610769] [2024-10-13 12:45:15,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:45:15,700 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 12:45:15,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:45:15,702 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 12:45:15,703 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 12:45:15,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 12:45:15,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:45:15,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 12:45:15,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:45:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 12:45:15,880 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:45:15,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:45:15,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116610769] [2024-10-13 12:45:15,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116610769] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:45:15,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:45:15,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:45:15,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741150132] [2024-10-13 12:45:15,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:45:15,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:45:15,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:45:15,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:45:15,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:45:15,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-10-13 12:45:15,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 120 transitions, 1125 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:45:15,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:45:15,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-10-13 12:45:15,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:45:16,216 INFO L124 PetriNetUnfolderBase]: 1186/2070 cut-off events. [2024-10-13 12:45:16,216 INFO L125 PetriNetUnfolderBase]: For 2385/2392 co-relation queries the response was YES. [2024-10-13 12:45:16,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5769 conditions, 2070 events. 1186/2070 cut-off events. For 2385/2392 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 9822 event pairs, 414 based on Foata normal form. 26/2041 useless extension candidates. Maximal degree in co-relation 5683. Up to 1327 conditions per place. [2024-10-13 12:45:16,224 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 90 selfloop transitions, 32 changer transitions 0/130 dead transitions. [2024-10-13 12:45:16,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 130 transitions, 1387 flow [2024-10-13 12:45:16,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:45:16,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:45:16,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-10-13 12:45:16,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47346938775510206 [2024-10-13 12:45:16,226 INFO L175 Difference]: Start difference. First operand has 163 places, 120 transitions, 1125 flow. Second operand 5 states and 116 transitions. [2024-10-13 12:45:16,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 130 transitions, 1387 flow [2024-10-13 12:45:16,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 130 transitions, 1222 flow, removed 51 selfloop flow, removed 22 redundant places. [2024-10-13 12:45:16,236 INFO L231 Difference]: Finished difference. Result has 144 places, 119 transitions, 1018 flow [2024-10-13 12:45:16,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1018, PETRI_PLACES=144, PETRI_TRANSITIONS=119} [2024-10-13 12:45:16,236 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 92 predicate places. [2024-10-13 12:45:16,236 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 119 transitions, 1018 flow [2024-10-13 12:45:16,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:45:16,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:45:16,237 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:45:16,241 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 (15)] Ended with exit code 0 [2024-10-13 12:45:16,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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 12:45:16,438 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-13 12:45:16,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:45:16,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1130562382, now seen corresponding path program 1 times [2024-10-13 12:45:16,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:45:16,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117360156] [2024-10-13 12:45:16,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:45:16,439 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 12:45:16,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:45:16,440 INFO L229 MonitoredProcess]: Starting monitored process 16 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 12:45:16,441 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 (16)] Waiting until timeout for monitored process [2024-10-13 12:45:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:45:16,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-13 12:45:16,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:45:16,530 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 12:45:16,602 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 13 treesize of output 9 [2024-10-13 12:45:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:45:17,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:45:17,794 INFO L349 Elim1Store]: treesize reduction 672, result has 23.7 percent of original size [2024-10-13 12:45:17,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 178 treesize of output 244