./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/parallel-misc-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:54:32,549 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:54:32,603 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:54:32,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:54:32,609 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:54:32,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:54:32,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:54:32,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:54:32,630 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:54:32,631 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:54:32,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:54:32,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:54:32,632 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:54:32,632 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:54:32,633 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:54:32,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:54:32,634 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:54:32,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:54:32,634 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:54:32,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:54:32,635 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:54:32,636 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:54:32,636 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:54:32,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:54:32,636 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:54:32,637 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:54:32,638 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:54:32,639 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:54:32,639 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:54:32,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:54:32,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:54:32,639 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:54:32,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:54:32,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:54:32,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:54:32,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:54:32,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:54:32,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:54:32,640 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:54:32,640 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:54:32,640 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:54:32,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:54:32,642 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 [2024-10-11 19:54:32,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:54:32,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:54:32,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:54:32,847 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:54:32,848 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:54:32,848 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2024-10-11 19:54:34,053 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:54:34,204 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:54:34,204 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2024-10-11 19:54:34,210 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1353df540/a4125aade7ed46838da785cad8891df0/FLAGc0b714bf6 [2024-10-11 19:54:34,220 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1353df540/a4125aade7ed46838da785cad8891df0 [2024-10-11 19:54:34,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:54:34,223 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:54:34,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:54:34,227 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:54:34,230 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:54:34,231 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:54:34" (1/1) ... [2024-10-11 19:54:34,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64987540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:34, skipping insertion in model container [2024-10-11 19:54:34,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:54:34" (1/1) ... [2024-10-11 19:54:34,250 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:54:34,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:54:34,432 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 19:54:34,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@45e76383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:34, skipping insertion in model container [2024-10-11 19:54:34,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:54:34,433 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:54:34,435 INFO L158 Benchmark]: Toolchain (without parser) took 211.35ms. Allocated memory is still 159.4MB. Free memory was 91.2MB in the beginning and 79.6MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:54:34,435 INFO L158 Benchmark]: CDTParser took 0.07ms. Allocated memory is still 117.4MB. Free memory is still 77.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:54:34,435 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.69ms. Allocated memory is still 159.4MB. Free memory was 91.0MB in the beginning and 79.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:54:34,436 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.07ms. Allocated memory is still 117.4MB. Free memory is still 77.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.69ms. Allocated memory is still 159.4MB. Free memory was 91.0MB in the beginning and 79.6MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 112]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:54:36,052 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:54:36,113 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:54:36,118 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:54:36,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:54:36,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:54:36,142 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:54:36,142 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:54:36,143 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:54:36,145 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:54:36,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:54:36,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:54:36,146 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:54:36,146 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:54:36,146 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:54:36,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:54:36,147 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:54:36,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:54:36,147 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:54:36,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:54:36,147 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:54:36,149 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:54:36,149 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:54:36,149 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:54:36,149 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:54:36,149 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:54:36,150 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:54:36,150 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:54:36,150 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:54:36,150 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:54:36,150 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:54:36,150 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:54:36,150 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:54:36,151 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:54:36,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:54:36,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:54:36,155 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:54:36,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:54:36,156 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:54:36,156 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:54:36,156 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:54:36,157 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:54:36,157 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:54:36,157 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:54:36,157 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:54:36,157 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faddac23864cc4e42f962ac43a8d0f59593853dbb1d55e3baabe0c76b2187dd4 [2024-10-11 19:54:36,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:54:36,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:54:36,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:54:36,409 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:54:36,410 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:54:36,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2024-10-11 19:54:37,582 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:54:37,759 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:54:37,760 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-1.wvr.c [2024-10-11 19:54:37,769 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/597c9c747/c41a68b4afcc415ab86b71f01f266ecf/FLAG95a7511ac [2024-10-11 19:54:38,144 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/597c9c747/c41a68b4afcc415ab86b71f01f266ecf [2024-10-11 19:54:38,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:54:38,147 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:54:38,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:54:38,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:54:38,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:54:38,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:54:38" (1/1) ... [2024-10-11 19:54:38,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b6be94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:38, skipping insertion in model container [2024-10-11 19:54:38,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:54:38" (1/1) ... [2024-10-11 19:54:38,173 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:54:38,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:54:38,379 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:54:38,383 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:54:38,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:54:38,407 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:54:38,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:54:38,449 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:54:38,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:38 WrapperNode [2024-10-11 19:54:38,450 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:54:38,451 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:54:38,451 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:54:38,451 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:54:38,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:38" (1/1) ... [2024-10-11 19:54:38,469 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:38" (1/1) ... [2024-10-11 19:54:38,501 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 18, calls inlined = 32, statements flattened = 261 [2024-10-11 19:54:38,503 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:54:38,504 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:54:38,504 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:54:38,504 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:54:38,513 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:38" (1/1) ... [2024-10-11 19:54:38,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:38" (1/1) ... [2024-10-11 19:54:38,517 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:38" (1/1) ... [2024-10-11 19:54:38,538 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-11 19:54:38,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:38" (1/1) ... [2024-10-11 19:54:38,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:38" (1/1) ... [2024-10-11 19:54:38,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:38" (1/1) ... [2024-10-11 19:54:38,559 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:38" (1/1) ... [2024-10-11 19:54:38,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:38" (1/1) ... [2024-10-11 19:54:38,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:38" (1/1) ... [2024-10-11 19:54:38,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:54:38,572 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:54:38,572 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:54:38,572 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:54:38,573 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:38" (1/1) ... [2024-10-11 19:54:38,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:54:38,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:38,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:54:38,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:54:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:54:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:54:38,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:54:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:54:38,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:54:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:54:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:54:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:54:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:54:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:54:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:54:38,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:54:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:54:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:54:38,645 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:54:38,768 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:54:38,771 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:54:39,312 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:54:39,312 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:54:39,634 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:54:39,634 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 19:54:39,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:54:39 BoogieIcfgContainer [2024-10-11 19:54:39,635 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:54:39,637 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:54:39,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:54:39,640 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:54:39,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:54:38" (1/3) ... [2024-10-11 19:54:39,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476f9e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:54:39, skipping insertion in model container [2024-10-11 19:54:39,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:38" (2/3) ... [2024-10-11 19:54:39,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476f9e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:54:39, skipping insertion in model container [2024-10-11 19:54:39,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:54:39" (3/3) ... [2024-10-11 19:54:39,644 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2024-10-11 19:54:39,658 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:54:39,658 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-11 19:54:39,658 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:54:39,720 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 19:54:39,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 49 transitions, 112 flow [2024-10-11 19:54:39,773 INFO L124 PetriNetUnfolderBase]: 5/47 cut-off events. [2024-10-11 19:54:39,773 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:54:39,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 47 events. 5/47 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 114 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-10-11 19:54:39,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 49 transitions, 112 flow [2024-10-11 19:54:39,779 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 46 transitions, 104 flow [2024-10-11 19:54:39,788 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:54:39,794 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;@630bb888, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:54:39,794 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-10-11 19:54:39,797 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:54:39,797 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:54:39,797 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:54:39,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:39,798 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:54:39,798 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:54:39,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:39,801 INFO L85 PathProgramCache]: Analyzing trace with hash 943557, now seen corresponding path program 1 times [2024-10-11 19:54:39,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:39,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039184912] [2024-10-11 19:54:39,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:39,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:39,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:39,813 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:54:39,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 19:54:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:39,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:54:39,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:39,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:54:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:39,925 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:54:39,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:39,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039184912] [2024-10-11 19:54:39,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039184912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:39,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:39,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:54:39,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39528474] [2024-10-11 19:54:39,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:39,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:54:39,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:39,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:54:39,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:54:39,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-11 19:54:39,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:39,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:39,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-11 19:54:39,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:40,185 INFO L124 PetriNetUnfolderBase]: 220/507 cut-off events. [2024-10-11 19:54:40,186 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-11 19:54:40,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 507 events. 220/507 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2757 event pairs, 130 based on Foata normal form. 1/402 useless extension candidates. Maximal degree in co-relation 806. Up to 338 conditions per place. [2024-10-11 19:54:40,194 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 23 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-10-11 19:54:40,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 148 flow [2024-10-11 19:54:40,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:54:40,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:54:40,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-10-11 19:54:40,212 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-10-11 19:54:40,213 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 104 flow. Second operand 3 states and 90 transitions. [2024-10-11 19:54:40,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 148 flow [2024-10-11 19:54:40,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 140 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:54:40,220 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 94 flow [2024-10-11 19:54:40,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2024-10-11 19:54:40,224 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2024-10-11 19:54:40,224 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 94 flow [2024-10-11 19:54:40,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:40,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:40,224 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:54:40,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-11 19:54:40,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:40,425 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:54:40,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:40,426 INFO L85 PathProgramCache]: Analyzing trace with hash 943558, now seen corresponding path program 1 times [2024-10-11 19:54:40,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:40,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632291733] [2024-10-11 19:54:40,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:40,427 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:40,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:40,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:54:40,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 19:54:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:40,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:54:40,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:40,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:54:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:40,570 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:54:40,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:40,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632291733] [2024-10-11 19:54:40,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632291733] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:40,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:40,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:54:40,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570509033] [2024-10-11 19:54:40,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:40,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:54:40,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:40,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:54:40,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:54:40,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-11 19:54:40,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:40,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:40,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-11 19:54:40,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:40,920 INFO L124 PetriNetUnfolderBase]: 221/510 cut-off events. [2024-10-11 19:54:40,920 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 19:54:40,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 510 events. 221/510 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2767 event pairs, 130 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 846. Up to 343 conditions per place. [2024-10-11 19:54:40,926 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 25 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-10-11 19:54:40,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 160 flow [2024-10-11 19:54:40,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:54:40,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:54:40,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-10-11 19:54:40,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5816326530612245 [2024-10-11 19:54:40,929 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 94 flow. Second operand 4 states and 114 transitions. [2024-10-11 19:54:40,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 160 flow [2024-10-11 19:54:40,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:54:40,932 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 117 flow [2024-10-11 19:54:40,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2024-10-11 19:54:40,934 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2024-10-11 19:54:40,934 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 117 flow [2024-10-11 19:54:40,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:40,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:40,934 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:54:40,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-11 19:54:41,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:41,135 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:54:41,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:41,136 INFO L85 PathProgramCache]: Analyzing trace with hash 906788885, now seen corresponding path program 1 times [2024-10-11 19:54:41,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:41,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801865401] [2024-10-11 19:54:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:41,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:41,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:41,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:54:41,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-11 19:54:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:41,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:54:41,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:41,206 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 [2024-10-11 19:54:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:41,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:41,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:41,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801865401] [2024-10-11 19:54:41,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801865401] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:41,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:54:41,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:54:41,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97293263] [2024-10-11 19:54:41,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:41,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:54:41,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:41,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:54:41,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:54:41,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-11 19:54:41,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 117 flow. Second operand has 10 states, 10 states have (on average 22.0) internal successors, (220), 10 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) [2024-10-11 19:54:41,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:41,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-11 19:54:41,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:42,322 INFO L124 PetriNetUnfolderBase]: 224/519 cut-off events. [2024-10-11 19:54:42,323 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 19:54:42,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 519 events. 224/519 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2831 event pairs, 130 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 853. Up to 346 conditions per place. [2024-10-11 19:54:42,326 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 25 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2024-10-11 19:54:42,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 55 transitions, 229 flow [2024-10-11 19:54:42,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:54:42,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:54:42,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-10-11 19:54:42,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5122448979591837 [2024-10-11 19:54:42,328 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 117 flow. Second operand 10 states and 251 transitions. [2024-10-11 19:54:42,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 55 transitions, 229 flow [2024-10-11 19:54:42,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:54:42,330 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 194 flow [2024-10-11 19:54:42,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=194, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2024-10-11 19:54:42,331 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2024-10-11 19:54:42,331 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 194 flow [2024-10-11 19:54:42,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.0) internal successors, (220), 10 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) [2024-10-11 19:54:42,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:42,331 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:54:42,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-11 19:54:42,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:42,532 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:54:42,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:42,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1952083796, now seen corresponding path program 1 times [2024-10-11 19:54:42,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:42,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681181279] [2024-10-11 19:54:42,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:42,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:42,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:42,536 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:54:42,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 19:54:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:42,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:54:42,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:42,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:54:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:42,593 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:54:42,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:42,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681181279] [2024-10-11 19:54:42,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681181279] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:42,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:42,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:54:42,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623250100] [2024-10-11 19:54:42,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:42,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:54:42,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:42,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:54:42,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:54:42,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-10-11 19:54:42,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:42,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:42,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-10-11 19:54:42,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:42,773 INFO L124 PetriNetUnfolderBase]: 224/450 cut-off events. [2024-10-11 19:54:42,773 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-11 19:54:42,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 858 conditions, 450 events. 224/450 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2076 event pairs, 130 based on Foata normal form. 0/413 useless extension candidates. Maximal degree in co-relation 824. Up to 341 conditions per place. [2024-10-11 19:54:42,775 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 31 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2024-10-11 19:54:42,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 256 flow [2024-10-11 19:54:42,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:54:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:54:42,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-10-11 19:54:42,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-10-11 19:54:42,778 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 194 flow. Second operand 4 states and 91 transitions. [2024-10-11 19:54:42,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 256 flow [2024-10-11 19:54:42,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 226 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-11 19:54:42,781 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 164 flow [2024-10-11 19:54:42,781 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2024-10-11 19:54:42,783 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2024-10-11 19:54:42,783 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 164 flow [2024-10-11 19:54:42,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:42,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:42,783 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:54:42,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-11 19:54:42,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:42,984 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:54:42,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:42,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1952083795, now seen corresponding path program 1 times [2024-10-11 19:54:42,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:42,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192172371] [2024-10-11 19:54:42,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:42,985 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:42,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:42,986 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:54:42,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 19:54:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:43,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 19:54:43,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:43,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:54:43,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:43,124 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:54:43,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:43,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192172371] [2024-10-11 19:54:43,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192172371] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:43,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:43,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:54:43,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011931166] [2024-10-11 19:54:43,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:43,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:54:43,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:43,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:54:43,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:54:43,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-10-11 19:54:43,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:43,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:43,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-10-11 19:54:43,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:43,586 INFO L124 PetriNetUnfolderBase]: 505/884 cut-off events. [2024-10-11 19:54:43,586 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-10-11 19:54:43,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 884 events. 505/884 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4132 event pairs, 48 based on Foata normal form. 0/744 useless extension candidates. Maximal degree in co-relation 1723. Up to 481 conditions per place. [2024-10-11 19:54:43,590 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 62 selfloop transitions, 9 changer transitions 0/79 dead transitions. [2024-10-11 19:54:43,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 79 transitions, 372 flow [2024-10-11 19:54:43,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:54:43,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:54:43,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-10-11 19:54:43,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6244897959183674 [2024-10-11 19:54:43,591 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 164 flow. Second operand 5 states and 153 transitions. [2024-10-11 19:54:43,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 79 transitions, 372 flow [2024-10-11 19:54:43,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 79 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:54:43,593 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 205 flow [2024-10-11 19:54:43,593 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2024-10-11 19:54:43,594 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2024-10-11 19:54:43,594 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 205 flow [2024-10-11 19:54:43,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:43,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:43,594 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:43,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-11 19:54:43,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:43,795 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:54:43,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:43,796 INFO L85 PathProgramCache]: Analyzing trace with hash 948251770, now seen corresponding path program 1 times [2024-10-11 19:54:43,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:43,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792956464] [2024-10-11 19:54:43,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:43,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:43,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:43,798 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:54:43,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 19:54:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:43,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 19:54:43,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:43,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:54:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:43,959 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:54:43,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:43,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792956464] [2024-10-11 19:54:43,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792956464] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:43,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:43,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:54:43,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815007198] [2024-10-11 19:54:43,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:43,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:54:43,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:43,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:54:43,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:54:44,078 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-10-11 19:54:44,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:44,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:44,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-10-11 19:54:44,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:44,436 INFO L124 PetriNetUnfolderBase]: 779/1345 cut-off events. [2024-10-11 19:54:44,436 INFO L125 PetriNetUnfolderBase]: For 149/165 co-relation queries the response was YES. [2024-10-11 19:54:44,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2959 conditions, 1345 events. 779/1345 cut-off events. For 149/165 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6136 event pairs, 107 based on Foata normal form. 26/1151 useless extension candidates. Maximal degree in co-relation 2925. Up to 753 conditions per place. [2024-10-11 19:54:44,441 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 63 selfloop transitions, 9 changer transitions 0/81 dead transitions. [2024-10-11 19:54:44,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 81 transitions, 423 flow [2024-10-11 19:54:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:54:44,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:54:44,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-10-11 19:54:44,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6163265306122448 [2024-10-11 19:54:44,443 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 205 flow. Second operand 5 states and 151 transitions. [2024-10-11 19:54:44,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 81 transitions, 423 flow [2024-10-11 19:54:44,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 414 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:54:44,445 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 245 flow [2024-10-11 19:54:44,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=245, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2024-10-11 19:54:44,446 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 11 predicate places. [2024-10-11 19:54:44,446 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 245 flow [2024-10-11 19:54:44,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:44,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:44,446 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:44,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-10-11 19:54:44,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:44,649 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:54:44,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:44,649 INFO L85 PathProgramCache]: Analyzing trace with hash 186205786, now seen corresponding path program 1 times [2024-10-11 19:54:44,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:44,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778292790] [2024-10-11 19:54:44,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:44,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:44,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:44,652 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:54:44,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 19:54:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:44,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 19:54:44,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:44,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:54:44,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:44,822 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:54:44,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:44,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778292790] [2024-10-11 19:54:44,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778292790] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:44,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:44,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:54:44,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106333815] [2024-10-11 19:54:44,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:44,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:54:44,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:44,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:54:44,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:54:44,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-10-11 19:54:44,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 245 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:44,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:44,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-10-11 19:54:44,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:45,135 INFO L124 PetriNetUnfolderBase]: 602/1190 cut-off events. [2024-10-11 19:54:45,136 INFO L125 PetriNetUnfolderBase]: For 294/302 co-relation queries the response was YES. [2024-10-11 19:54:45,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2791 conditions, 1190 events. 602/1190 cut-off events. For 294/302 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6149 event pairs, 424 based on Foata normal form. 10/1081 useless extension candidates. Maximal degree in co-relation 2754. Up to 983 conditions per place. [2024-10-11 19:54:45,141 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 47 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-10-11 19:54:45,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 371 flow [2024-10-11 19:54:45,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:54:45,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:54:45,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-10-11 19:54:45,142 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6479591836734694 [2024-10-11 19:54:45,142 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 245 flow. Second operand 4 states and 127 transitions. [2024-10-11 19:54:45,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 371 flow [2024-10-11 19:54:45,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 64 transitions, 363 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:54:45,145 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 252 flow [2024-10-11 19:54:45,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-10-11 19:54:45,146 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2024-10-11 19:54:45,146 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 252 flow [2024-10-11 19:54:45,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:45,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:45,146 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 19:54:45,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-11 19:54:45,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:45,347 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:54:45,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:45,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1396080770, now seen corresponding path program 2 times [2024-10-11 19:54:45,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:45,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729099613] [2024-10-11 19:54:45,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:54:45,349 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:45,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:45,352 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:54:45,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 19:54:45,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:54:45,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:54:45,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 19:54:45,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:45,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:54:45,609 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:45,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:46,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:46,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729099613] [2024-10-11 19:54:46,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729099613] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:46,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:54:46,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:54:46,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172892366] [2024-10-11 19:54:46,069 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:46,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:54:46,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:46,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:54:46,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:54:46,715 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-11 19:54:46,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 252 flow. Second operand has 14 states, 14 states have (on average 22.571428571428573) internal successors, (316), 14 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:46,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:46,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-11 19:54:46,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:48,571 INFO L124 PetriNetUnfolderBase]: 608/1208 cut-off events. [2024-10-11 19:54:48,571 INFO L125 PetriNetUnfolderBase]: For 531/539 co-relation queries the response was YES. [2024-10-11 19:54:48,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2965 conditions, 1208 events. 608/1208 cut-off events. For 531/539 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6273 event pairs, 424 based on Foata normal form. 6/1095 useless extension candidates. Maximal degree in co-relation 2858. Up to 1009 conditions per place. [2024-10-11 19:54:48,578 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 29 selfloop transitions, 31 changer transitions 0/73 dead transitions. [2024-10-11 19:54:48,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 73 transitions, 486 flow [2024-10-11 19:54:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:54:48,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:54:48,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 524 transitions. [2024-10-11 19:54:48,581 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48608534322820035 [2024-10-11 19:54:48,581 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 252 flow. Second operand 22 states and 524 transitions. [2024-10-11 19:54:48,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 73 transitions, 486 flow [2024-10-11 19:54:48,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 73 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:54:48,585 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 453 flow [2024-10-11 19:54:48,586 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=453, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-10-11 19:54:48,586 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 38 predicate places. [2024-10-11 19:54:48,587 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 453 flow [2024-10-11 19:54:48,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.571428571428573) internal successors, (316), 14 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:48,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:48,587 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:48,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-11 19:54:48,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:48,788 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:54:48,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:48,789 INFO L85 PathProgramCache]: Analyzing trace with hash 393978281, now seen corresponding path program 1 times [2024-10-11 19:54:48,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:48,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018207286] [2024-10-11 19:54:48,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:48,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:48,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:48,790 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:54:48,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-11 19:54:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:48,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:54:48,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:48,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:54:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:49,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:49,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:49,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018207286] [2024-10-11 19:54:49,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018207286] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:49,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:54:49,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 19:54:49,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801734928] [2024-10-11 19:54:49,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:49,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:54:49,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:49,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:54:49,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:54:50,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-10-11 19:54:50,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 453 flow. Second operand has 12 states, 12 states have (on average 20.0) internal successors, (240), 12 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:50,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:50,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-10-11 19:54:50,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:51,499 INFO L124 PetriNetUnfolderBase]: 1492/2555 cut-off events. [2024-10-11 19:54:51,499 INFO L125 PetriNetUnfolderBase]: For 880/921 co-relation queries the response was YES. [2024-10-11 19:54:51,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6489 conditions, 2555 events. 1492/2555 cut-off events. For 880/921 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 11956 event pairs, 90 based on Foata normal form. 257/2559 useless extension candidates. Maximal degree in co-relation 6433. Up to 422 conditions per place. [2024-10-11 19:54:51,511 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 190 selfloop transitions, 27 changer transitions 0/226 dead transitions. [2024-10-11 19:54:51,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 226 transitions, 1354 flow [2024-10-11 19:54:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 19:54:51,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 19:54:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 454 transitions. [2024-10-11 19:54:51,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.617687074829932 [2024-10-11 19:54:51,514 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 453 flow. Second operand 15 states and 454 transitions. [2024-10-11 19:54:51,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 226 transitions, 1354 flow [2024-10-11 19:54:51,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 226 transitions, 1274 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-10-11 19:54:51,518 INFO L231 Difference]: Finished difference. Result has 93 places, 83 transitions, 498 flow [2024-10-11 19:54:51,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=498, PETRI_PLACES=93, PETRI_TRANSITIONS=83} [2024-10-11 19:54:51,519 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 45 predicate places. [2024-10-11 19:54:51,519 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 83 transitions, 498 flow [2024-10-11 19:54:51,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.0) internal successors, (240), 12 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:51,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:51,519 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:51,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-10-11 19:54:51,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:51,720 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:54:51,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:51,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1592266512, now seen corresponding path program 1 times [2024-10-11 19:54:51,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:51,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748951851] [2024-10-11 19:54:51,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:51,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:51,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:51,723 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:54:51,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-11 19:54:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:51,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:54:51,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:51,851 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:54:51,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:51,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748951851] [2024-10-11 19:54:51,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748951851] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:51,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:51,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 19:54:51,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134142812] [2024-10-11 19:54:51,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:51,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:54:51,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:51,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:54:51,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:54:51,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-10-11 19:54:51,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 83 transitions, 498 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:51,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:51,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-10-11 19:54:51,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:52,319 INFO L124 PetriNetUnfolderBase]: 1999/3593 cut-off events. [2024-10-11 19:54:52,319 INFO L125 PetriNetUnfolderBase]: For 3375/3408 co-relation queries the response was YES. [2024-10-11 19:54:52,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10165 conditions, 3593 events. 1999/3593 cut-off events. For 3375/3408 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 20097 event pairs, 223 based on Foata normal form. 6/3221 useless extension candidates. Maximal degree in co-relation 10111. Up to 1971 conditions per place. [2024-10-11 19:54:52,340 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 94 selfloop transitions, 25 changer transitions 2/137 dead transitions. [2024-10-11 19:54:52,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 137 transitions, 942 flow [2024-10-11 19:54:52,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:54:52,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:54:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2024-10-11 19:54:52,342 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7428571428571429 [2024-10-11 19:54:52,342 INFO L175 Difference]: Start difference. First operand has 93 places, 83 transitions, 498 flow. Second operand 5 states and 182 transitions. [2024-10-11 19:54:52,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 137 transitions, 942 flow [2024-10-11 19:54:52,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 137 transitions, 885 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-10-11 19:54:52,374 INFO L231 Difference]: Finished difference. Result has 97 places, 97 transitions, 599 flow [2024-10-11 19:54:52,375 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=599, PETRI_PLACES=97, PETRI_TRANSITIONS=97} [2024-10-11 19:54:52,375 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 49 predicate places. [2024-10-11 19:54:52,376 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 97 transitions, 599 flow [2024-10-11 19:54:52,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:52,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:52,377 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:52,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-11 19:54:52,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:52,577 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:54:52,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:52,578 INFO L85 PathProgramCache]: Analyzing trace with hash -324586869, now seen corresponding path program 1 times [2024-10-11 19:54:52,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:52,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715726452] [2024-10-11 19:54:52,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:52,578 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:52,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:52,579 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:54:52,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-11 19:54:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:52,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:54:52,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:52,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:54:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:52,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:53,174 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:53,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715726452] [2024-10-11 19:54:53,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715726452] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:53,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:54:53,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 19:54:53,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187190903] [2024-10-11 19:54:53,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:53,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:54:53,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:53,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:54:53,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:54:53,859 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-10-11 19:54:53,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 97 transitions, 599 flow. Second operand has 12 states, 12 states have (on average 20.333333333333332) internal successors, (244), 12 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:53,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:53,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-10-11 19:54:53,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:55,762 INFO L124 PetriNetUnfolderBase]: 4974/7886 cut-off events. [2024-10-11 19:54:55,763 INFO L125 PetriNetUnfolderBase]: For 8764/8936 co-relation queries the response was YES. [2024-10-11 19:54:55,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26471 conditions, 7886 events. 4974/7886 cut-off events. For 8764/8936 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 41528 event pairs, 406 based on Foata normal form. 724/8509 useless extension candidates. Maximal degree in co-relation 26419. Up to 1524 conditions per place. [2024-10-11 19:54:55,802 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 317 selfloop transitions, 32 changer transitions 3/363 dead transitions. [2024-10-11 19:54:55,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 363 transitions, 2793 flow [2024-10-11 19:54:55,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 19:54:55,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 19:54:55,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 441 transitions. [2024-10-11 19:54:55,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-11 19:54:55,805 INFO L175 Difference]: Start difference. First operand has 97 places, 97 transitions, 599 flow. Second operand 15 states and 441 transitions. [2024-10-11 19:54:55,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 363 transitions, 2793 flow [2024-10-11 19:54:55,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 363 transitions, 2785 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-10-11 19:54:55,814 INFO L231 Difference]: Finished difference. Result has 112 places, 113 transitions, 790 flow [2024-10-11 19:54:55,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=790, PETRI_PLACES=112, PETRI_TRANSITIONS=113} [2024-10-11 19:54:55,815 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 64 predicate places. [2024-10-11 19:54:55,815 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 113 transitions, 790 flow [2024-10-11 19:54:55,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.333333333333332) internal successors, (244), 12 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:55,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:55,816 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:55,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-11 19:54:56,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:56,016 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:54:56,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:56,017 INFO L85 PathProgramCache]: Analyzing trace with hash -997943642, now seen corresponding path program 1 times [2024-10-11 19:54:56,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:56,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049840163] [2024-10-11 19:54:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:56,017 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:56,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:56,018 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:54:56,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-11 19:54:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:56,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:54:56,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:56,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:56,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:56,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:56,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049840163] [2024-10-11 19:54:56,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049840163] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:56,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:54:56,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-10-11 19:54:56,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542204662] [2024-10-11 19:54:56,249 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:56,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:54:56,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:56,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:54:56,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:54:56,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-11 19:54:56,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 113 transitions, 790 flow. Second operand has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:56,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:56,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-11 19:54:56,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:58,686 INFO L124 PetriNetUnfolderBase]: 10541/16938 cut-off events. [2024-10-11 19:54:58,687 INFO L125 PetriNetUnfolderBase]: For 25551/25787 co-relation queries the response was YES. [2024-10-11 19:54:58,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61829 conditions, 16938 events. 10541/16938 cut-off events. For 25551/25787 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 104755 event pairs, 2313 based on Foata normal form. 22/16733 useless extension candidates. Maximal degree in co-relation 61771. Up to 5563 conditions per place. [2024-10-11 19:54:58,786 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 217 selfloop transitions, 42 changer transitions 0/271 dead transitions. [2024-10-11 19:54:58,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 271 transitions, 2260 flow [2024-10-11 19:54:58,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:54:58,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:54:58,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 308 transitions. [2024-10-11 19:54:58,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-11 19:54:58,788 INFO L175 Difference]: Start difference. First operand has 112 places, 113 transitions, 790 flow. Second operand 10 states and 308 transitions. [2024-10-11 19:54:58,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 271 transitions, 2260 flow [2024-10-11 19:54:58,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 271 transitions, 2168 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-10-11 19:54:58,827 INFO L231 Difference]: Finished difference. Result has 121 places, 124 transitions, 927 flow [2024-10-11 19:54:58,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=927, PETRI_PLACES=121, PETRI_TRANSITIONS=124} [2024-10-11 19:54:58,828 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 73 predicate places. [2024-10-11 19:54:58,828 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 124 transitions, 927 flow [2024-10-11 19:54:58,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.6) internal successors, (236), 10 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:58,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:58,829 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:58,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-11 19:54:59,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:59,033 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:54:59,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:59,033 INFO L85 PathProgramCache]: Analyzing trace with hash 384079613, now seen corresponding path program 1 times [2024-10-11 19:54:59,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:59,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078274538] [2024-10-11 19:54:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:59,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:59,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:59,035 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:54:59,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-11 19:54:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:59,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:54:59,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:59,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:59,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:59,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:59,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078274538] [2024-10-11 19:54:59,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078274538] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:59,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:54:59,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-10-11 19:54:59,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912820272] [2024-10-11 19:54:59,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:59,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:54:59,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:59,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:54:59,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:54:59,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-11 19:54:59,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 124 transitions, 927 flow. Second operand has 10 states, 10 states have (on average 23.3) internal successors, (233), 10 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:59,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:59,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-11 19:54:59,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:55:01,934 INFO L124 PetriNetUnfolderBase]: 11090/17883 cut-off events. [2024-10-11 19:55:01,934 INFO L125 PetriNetUnfolderBase]: For 29637/29851 co-relation queries the response was YES. [2024-10-11 19:55:01,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66758 conditions, 17883 events. 11090/17883 cut-off events. For 29637/29851 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 112775 event pairs, 2651 based on Foata normal form. 16/17647 useless extension candidates. Maximal degree in co-relation 66693. Up to 6148 conditions per place. [2024-10-11 19:55:02,039 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 221 selfloop transitions, 42 changer transitions 0/281 dead transitions. [2024-10-11 19:55:02,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 281 transitions, 2446 flow [2024-10-11 19:55:02,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:55:02,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:55:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 309 transitions. [2024-10-11 19:55:02,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6306122448979592 [2024-10-11 19:55:02,041 INFO L175 Difference]: Start difference. First operand has 121 places, 124 transitions, 927 flow. Second operand 10 states and 309 transitions. [2024-10-11 19:55:02,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 281 transitions, 2446 flow [2024-10-11 19:55:02,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 281 transitions, 2439 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:55:02,095 INFO L231 Difference]: Finished difference. Result has 130 places, 135 transitions, 1115 flow [2024-10-11 19:55:02,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1115, PETRI_PLACES=130, PETRI_TRANSITIONS=135} [2024-10-11 19:55:02,097 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 82 predicate places. [2024-10-11 19:55:02,097 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 135 transitions, 1115 flow [2024-10-11 19:55:02,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.3) internal successors, (233), 10 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:55:02,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:55:02,097 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-11 19:55:02,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-11 19:55:02,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:55:02,298 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:55:02,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:55:02,299 INFO L85 PathProgramCache]: Analyzing trace with hash 719028252, now seen corresponding path program 3 times [2024-10-11 19:55:02,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:55:02,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155176697] [2024-10-11 19:55:02,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:55:02,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:55:02,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:55:02,300 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:55:02,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-11 19:55:02,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-11 19:55:02,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:55:02,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 19:55:02,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:55:02,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:55:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:55:02,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:55:04,159 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:55:04,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:55:04,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155176697] [2024-10-11 19:55:04,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155176697] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:55:04,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:55:04,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-11 19:55:04,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126227172] [2024-10-11 19:55:04,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:55:04,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 19:55:04,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:55:04,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 19:55:04,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-11 19:55:06,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-11 19:55:06,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 135 transitions, 1115 flow. Second operand has 26 states, 26 states have (on average 22.76923076923077) internal successors, (592), 26 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:55:06,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:55:06,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-11 19:55:06,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:55:19,726 INFO L124 PetriNetUnfolderBase]: 9688/16365 cut-off events. [2024-10-11 19:55:19,726 INFO L125 PetriNetUnfolderBase]: For 31530/31562 co-relation queries the response was YES. [2024-10-11 19:55:19,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63479 conditions, 16365 events. 9688/16365 cut-off events. For 31530/31562 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 109992 event pairs, 5927 based on Foata normal form. 12/16025 useless extension candidates. Maximal degree in co-relation 63168. Up to 14547 conditions per place. [2024-10-11 19:55:19,838 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 76 selfloop transitions, 66 changer transitions 0/171 dead transitions. [2024-10-11 19:55:19,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 171 transitions, 1807 flow [2024-10-11 19:55:19,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-11 19:55:19,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-11 19:55:19,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 1069 transitions. [2024-10-11 19:55:19,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47426796805678795 [2024-10-11 19:55:19,843 INFO L175 Difference]: Start difference. First operand has 130 places, 135 transitions, 1115 flow. Second operand 46 states and 1069 transitions. [2024-10-11 19:55:19,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 171 transitions, 1807 flow [2024-10-11 19:55:19,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 171 transitions, 1759 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:55:19,907 INFO L231 Difference]: Finished difference. Result has 183 places, 171 transitions, 1661 flow [2024-10-11 19:55:19,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1661, PETRI_PLACES=183, PETRI_TRANSITIONS=171} [2024-10-11 19:55:19,908 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 135 predicate places. [2024-10-11 19:55:19,908 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 171 transitions, 1661 flow [2024-10-11 19:55:19,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 22.76923076923077) internal successors, (592), 26 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:55:19,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:55:19,908 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1] [2024-10-11 19:55:19,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-11 19:55:20,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:55:20,109 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:55:20,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:55:20,109 INFO L85 PathProgramCache]: Analyzing trace with hash 13437612, now seen corresponding path program 1 times [2024-10-11 19:55:20,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:55:20,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664632826] [2024-10-11 19:55:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:55:20,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:55:20,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:55:20,112 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:55:20,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-11 19:55:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:55:20,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:55:20,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:55:20,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 19:55:20,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 19 [2024-10-11 19:55:20,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:55:20,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:55:21,981 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-11 19:55:21,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 70 [2024-10-11 19:55:27,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:55:27,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:55:27,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664632826] [2024-10-11 19:55:27,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664632826] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:55:27,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:55:27,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2024-10-11 19:55:27,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598004409] [2024-10-11 19:55:27,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:55:27,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 19:55:27,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:55:27,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 19:55:27,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=164, Unknown=2, NotChecked=0, Total=210 [2024-10-11 19:55:28,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-11 19:55:29,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 19:55:30,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 19:55:31,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 19:55:33,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 19:55:34,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 19:55:36,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 19:55:37,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-11 19:55:38,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 19:55:39,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 19:55:41,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 19:55:42,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 19:55:43,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 19:55:45,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 19:55:45,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 49 [2024-10-11 19:55:45,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 171 transitions, 1661 flow. Second operand has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:55:45,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:55:45,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 49 [2024-10-11 19:55:45,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:55:49,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:55:53,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:55:58,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:56:02,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 19:56:08,003 INFO L124 PetriNetUnfolderBase]: 23361/35519 cut-off events. [2024-10-11 19:56:08,004 INFO L125 PetriNetUnfolderBase]: For 77442/77449 co-relation queries the response was YES. [2024-10-11 19:56:08,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142429 conditions, 35519 events. 23361/35519 cut-off events. For 77442/77449 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 221961 event pairs, 994 based on Foata normal form. 2/35521 useless extension candidates. Maximal degree in co-relation 142320. Up to 19874 conditions per place. [2024-10-11 19:56:08,306 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 344 selfloop transitions, 97 changer transitions 2/447 dead transitions. [2024-10-11 19:56:08,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 447 transitions, 4509 flow [2024-10-11 19:56:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:56:08,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:56:08,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-10-11 19:56:08,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 19:56:08,312 INFO L175 Difference]: Start difference. First operand has 183 places, 171 transitions, 1661 flow. Second operand 10 states and 245 transitions. [2024-10-11 19:56:08,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 447 transitions, 4509 flow [2024-10-11 19:56:08,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 447 transitions, 4347 flow, removed 51 selfloop flow, removed 21 redundant places. [2024-10-11 19:56:08,554 INFO L231 Difference]: Finished difference. Result has 176 places, 245 transitions, 2315 flow [2024-10-11 19:56:08,554 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2315, PETRI_PLACES=176, PETRI_TRANSITIONS=245} [2024-10-11 19:56:08,554 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 128 predicate places. [2024-10-11 19:56:08,554 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 245 transitions, 2315 flow [2024-10-11 19:56:08,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:08,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:08,555 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1] [2024-10-11 19:56:08,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2024-10-11 19:56:08,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:08,755 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:56:08,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:08,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1993908734, now seen corresponding path program 2 times [2024-10-11 19:56:08,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:08,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847044168] [2024-10-11 19:56:08,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:56:08,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:08,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:08,757 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:08,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-11 19:56:08,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:56:08,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:56:08,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:56:08,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:09,089 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 19:56:09,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 19 [2024-10-11 19:56:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:09,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:10,700 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-11 19:56:10,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 70