./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/unroll-cond-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f5c6e2b4939ff0e3b5a44ab7f8c3e5d18f7e9fd12beb8fad487ea501e8fa48b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:27:46,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:27:46,858 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:27:46,862 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:27:46,863 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:27:46,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:27:46,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:27:46,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:27:46,890 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:27:46,892 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:27:46,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:27:46,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:27:46,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:27:46,894 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:27:46,894 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:27:46,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:27:46,895 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:27:46,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:27:46,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:27:46,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:27:46,896 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:27:46,896 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:27:46,897 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:27:46,897 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:27:46,897 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:27:46,897 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:27:46,897 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:27:46,898 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:27:46,898 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:27:46,898 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:27:46,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:27:46,898 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:27:46,899 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:27:46,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:27:46,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:27:46,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:27:46,900 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:27:46,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:27:46,900 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:27:46,901 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:27:46,901 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:27:46,901 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:27:46,901 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5c6e2b4939ff0e3b5a44ab7f8c3e5d18f7e9fd12beb8fad487ea501e8fa48b [2024-10-24 19:27:47,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:27:47,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:27:47,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:27:47,195 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:27:47,195 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:27:47,197 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c [2024-10-24 19:27:48,566 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:27:48,746 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:27:48,746 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c [2024-10-24 19:27:48,754 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/764a00897/9fb01157e37141ff86233471a6b4bf97/FLAGde5e990fd [2024-10-24 19:27:49,137 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/764a00897/9fb01157e37141ff86233471a6b4bf97 [2024-10-24 19:27:49,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:27:49,140 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:27:49,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:27:49,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:27:49,148 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:27:49,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:27:49" (1/1) ... [2024-10-24 19:27:49,149 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7efb3e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:49, skipping insertion in model container [2024-10-24 19:27:49,150 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:27:49" (1/1) ... [2024-10-24 19:27:49,175 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:27:49,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:27:49,375 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) [2024-10-24 19:27:49,376 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6e244176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:49, skipping insertion in model container [2024-10-24 19:27:49,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:27:49,377 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-24 19:27:49,379 INFO L158 Benchmark]: Toolchain (without parser) took 238.27ms. Allocated memory is still 146.8MB. Free memory was 107.4MB in the beginning and 96.0MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 19:27:49,381 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:27:49,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.12ms. Allocated memory is still 146.8MB. Free memory was 107.4MB in the beginning and 96.0MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 19:27:49,383 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 236.12ms. Allocated memory is still 146.8MB. Free memory was 107.4MB in the beginning and 96.0MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 100]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f5c6e2b4939ff0e3b5a44ab7f8c3e5d18f7e9fd12beb8fad487ea501e8fa48b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:27:51,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:27:51,402 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-24 19:27:51,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:27:51,410 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:27:51,444 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:27:51,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:27:51,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:27:51,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:27:51,447 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:27:51,447 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:27:51,448 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:27:51,448 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:27:51,448 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:27:51,450 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:27:51,451 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:27:51,451 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:27:51,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:27:51,452 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:27:51,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:27:51,455 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:27:51,456 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:27:51,456 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:27:51,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:27:51,456 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:27:51,457 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 19:27:51,457 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:27:51,457 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 19:27:51,457 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:27:51,457 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:27:51,458 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:27:51,458 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:27:51,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:27:51,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:27:51,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:27:51,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:27:51,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:27:51,461 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:27:51,461 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 19:27:51,461 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 19:27:51,461 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:27:51,462 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:27:51,462 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:27:51,462 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:27:51,462 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 19:27:51,463 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5c6e2b4939ff0e3b5a44ab7f8c3e5d18f7e9fd12beb8fad487ea501e8fa48b [2024-10-24 19:27:51,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:27:51,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:27:51,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:27:51,789 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:27:51,790 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:27:51,791 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c [2024-10-24 19:27:53,275 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:27:53,464 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:27:53,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c [2024-10-24 19:27:53,482 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a434f0db8/73157a144c59499ead11e8e93a7c5bca/FLAGb10a39018 [2024-10-24 19:27:53,497 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a434f0db8/73157a144c59499ead11e8e93a7c5bca [2024-10-24 19:27:53,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:27:53,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:27:53,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:27:53,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:27:53,509 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:27:53,510 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:27:53" (1/1) ... [2024-10-24 19:27:53,511 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5acbc788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:53, skipping insertion in model container [2024-10-24 19:27:53,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:27:53" (1/1) ... [2024-10-24 19:27:53,537 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:27:53,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:27:53,782 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-24 19:27:53,787 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:27:53,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:27:53,821 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:27:53,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:27:53,874 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:27:53,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:53 WrapperNode [2024-10-24 19:27:53,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:27:53,875 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:27:53,875 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:27:53,876 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:27:53,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:53" (1/1) ... [2024-10-24 19:27:53,896 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:53" (1/1) ... [2024-10-24 19:27:53,920 INFO L138 Inliner]: procedures = 25, calls = 24, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2024-10-24 19:27:53,921 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:27:53,924 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:27:53,924 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:27:53,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:27:53,934 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:53" (1/1) ... [2024-10-24 19:27:53,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:53" (1/1) ... [2024-10-24 19:27:53,939 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:53" (1/1) ... [2024-10-24 19:27:53,958 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-24 19:27:53,959 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:53" (1/1) ... [2024-10-24 19:27:53,959 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:53" (1/1) ... [2024-10-24 19:27:53,965 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:53" (1/1) ... [2024-10-24 19:27:53,967 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:53" (1/1) ... [2024-10-24 19:27:53,969 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:53" (1/1) ... [2024-10-24 19:27:53,970 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:53" (1/1) ... [2024-10-24 19:27:53,973 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:27:53,977 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:27:53,977 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:27:53,977 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:27:53,978 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:53" (1/1) ... [2024-10-24 19:27:53,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:27:54,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:27:54,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 19:27:54,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 19:27:54,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:27:54,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 19:27:54,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 19:27:54,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 19:27:54,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 19:27:54,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-24 19:27:54,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-24 19:27:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 19:27:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-24 19:27:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-24 19:27:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:27:54,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:27:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-24 19:27:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-24 19:27:54,065 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:27:54,180 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:27:54,182 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:27:54,606 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:27:54,606 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:27:54,892 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:27:54,892 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-24 19:27:54,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:27:54 BoogieIcfgContainer [2024-10-24 19:27:54,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:27:54,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:27:54,896 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:27:54,904 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:27:54,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:27:53" (1/3) ... [2024-10-24 19:27:54,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3b45b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:27:54, skipping insertion in model container [2024-10-24 19:27:54,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:27:53" (2/3) ... [2024-10-24 19:27:54,906 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3b45b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:27:54, skipping insertion in model container [2024-10-24 19:27:54,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:27:54" (3/3) ... [2024-10-24 19:27:54,907 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-2.wvr.c [2024-10-24 19:27:54,922 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:27:54,922 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-24 19:27:54,923 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:27:54,982 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 19:27:55,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2024-10-24 19:27:55,041 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-10-24 19:27:55,041 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:27:55,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 74 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-10-24 19:27:55,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2024-10-24 19:27:55,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 86 flow [2024-10-24 19:27:55,054 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:27:55,060 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;@3e1ae8e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:27:55,061 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-24 19:27:55,063 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:27:55,064 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-24 19:27:55,064 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:27:55,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:27:55,065 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:27:55,065 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:27:55,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:27:55,070 INFO L85 PathProgramCache]: Analyzing trace with hash 462752, now seen corresponding path program 1 times [2024-10-24 19:27:55,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:27:55,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184234077] [2024-10-24 19:27:55,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:27:55,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:27:55,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:27:55,085 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:27:55,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-24 19:27:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:27:55,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:27:55,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:27:55,202 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 [2024-10-24 19:27:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:27:55,216 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:27:55,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:27:55,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184234077] [2024-10-24 19:27:55,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184234077] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:27:55,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:27:55,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:27:55,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642619696] [2024-10-24 19:27:55,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:27:55,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:27:55,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:27:55,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:27:55,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:27:55,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 19:27:55,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-10-24 19:27:55,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:27:55,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 19:27:55,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:27:55,467 INFO L124 PetriNetUnfolderBase]: 110/251 cut-off events. [2024-10-24 19:27:55,467 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-24 19:27:55,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 251 events. 110/251 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1109 event pairs, 75 based on Foata normal form. 1/199 useless extension candidates. Maximal degree in co-relation 398. Up to 185 conditions per place. [2024-10-24 19:27:55,473 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 21 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2024-10-24 19:27:55,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 126 flow [2024-10-24 19:27:55,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:27:55,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:27:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-10-24 19:27:55,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-10-24 19:27:55,488 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 86 flow. Second operand 3 states and 67 transitions. [2024-10-24 19:27:55,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 126 flow [2024-10-24 19:27:55,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 118 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:27:55,492 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 76 flow [2024-10-24 19:27:55,494 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2024-10-24 19:27:55,498 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-10-24 19:27:55,500 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 76 flow [2024-10-24 19:27:55,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-10-24 19:27:55,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:27:55,500 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:27:55,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-24 19:27:55,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:27:55,704 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:27:55,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:27:55,705 INFO L85 PathProgramCache]: Analyzing trace with hash 462753, now seen corresponding path program 1 times [2024-10-24 19:27:55,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:27:55,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560812582] [2024-10-24 19:27:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:27:55,705 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 [2024-10-24 19:27:55,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:27:55,709 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:27:55,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-24 19:27:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:27:55,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:27:55,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:27:55,793 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 [2024-10-24 19:27:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:27:55,896 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:27:55,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:27:55,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560812582] [2024-10-24 19:27:55,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560812582] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:27:55,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:27:55,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:27:55,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964686387] [2024-10-24 19:27:55,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:27:55,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:27:55,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:27:55,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:27:55,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:27:55,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 19:27:55,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-10-24 19:27:55,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:27:55,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 19:27:55,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:27:56,191 INFO L124 PetriNetUnfolderBase]: 110/253 cut-off events. [2024-10-24 19:27:56,191 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-24 19:27:56,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 253 events. 110/253 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1113 event pairs, 75 based on Foata normal form. 1/201 useless extension candidates. Maximal degree in co-relation 434. Up to 189 conditions per place. [2024-10-24 19:27:56,194 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 24 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-10-24 19:27:56,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 36 transitions, 132 flow [2024-10-24 19:27:56,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:27:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:27:56,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-10-24 19:27:56,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-24 19:27:56,197 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 76 flow. Second operand 3 states and 70 transitions. [2024-10-24 19:27:56,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 36 transitions, 132 flow [2024-10-24 19:27:56,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:27:56,200 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 86 flow [2024-10-24 19:27:56,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2024-10-24 19:27:56,202 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-10-24 19:27:56,202 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 86 flow [2024-10-24 19:27:56,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-10-24 19:27:56,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:27:56,205 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-24 19:27:56,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-24 19:27:56,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:27:56,406 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:27:56,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:27:56,406 INFO L85 PathProgramCache]: Analyzing trace with hash 444720560, now seen corresponding path program 1 times [2024-10-24 19:27:56,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:27:56,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138450084] [2024-10-24 19:27:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:27:56,408 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 [2024-10-24 19:27:56,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:27:56,411 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:27:56,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-24 19:27:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:27:56,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:27:56,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:27:56,490 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 [2024-10-24 19:27:56,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:27:56,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:27:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:27:56,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:27:56,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138450084] [2024-10-24 19:27:56,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138450084] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:27:56,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:27:56,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-24 19:27:56,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861723211] [2024-10-24 19:27:56,954 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:27:56,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:27:56,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:27:56,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:27:56,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:27:57,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 19:27:57,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 86 flow. Second operand has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 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) [2024-10-24 19:27:57,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:27:57,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 19:27:57,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:27:57,761 INFO L124 PetriNetUnfolderBase]: 113/262 cut-off events. [2024-10-24 19:27:57,761 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-24 19:27:57,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 262 events. 113/262 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1150 event pairs, 75 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 469. Up to 192 conditions per place. [2024-10-24 19:27:57,764 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 24 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-10-24 19:27:57,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 188 flow [2024-10-24 19:27:57,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 19:27:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 19:27:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-10-24 19:27:57,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-10-24 19:27:57,769 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 86 flow. Second operand 9 states and 164 transitions. [2024-10-24 19:27:57,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 188 flow [2024-10-24 19:27:57,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:27:57,771 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 158 flow [2024-10-24 19:27:57,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=158, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-10-24 19:27:57,772 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-10-24 19:27:57,773 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 158 flow [2024-10-24 19:27:57,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.0) internal successors, (150), 10 states have internal predecessors, (150), 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) [2024-10-24 19:27:57,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:27:57,773 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:27:57,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-10-24 19:27:57,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:27:57,976 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:27:57,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:27:57,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1301294496, now seen corresponding path program 1 times [2024-10-24 19:27:57,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:27:57,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752069554] [2024-10-24 19:27:57,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:27:57,977 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 [2024-10-24 19:27:57,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:27:57,981 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:27:57,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-24 19:27:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:27:58,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 19:27:58,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:27:58,040 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 [2024-10-24 19:27:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:27:58,072 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:27:58,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:27:58,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752069554] [2024-10-24 19:27:58,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752069554] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:27:58,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:27:58,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:27:58,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715755839] [2024-10-24 19:27:58,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:27:58,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:27:58,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:27:58,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:27:58,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:27:58,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-24 19:27:58,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-10-24 19:27:58,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:27:58,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-24 19:27:58,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:27:58,247 INFO L124 PetriNetUnfolderBase]: 113/235 cut-off events. [2024-10-24 19:27:58,247 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-24 19:27:58,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 235 events. 113/235 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 882 event pairs, 75 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 446. Up to 187 conditions per place. [2024-10-24 19:27:58,252 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 29 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2024-10-24 19:27:58,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 218 flow [2024-10-24 19:27:58,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:27:58,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:27:58,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-10-24 19:27:58,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-10-24 19:27:58,253 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 158 flow. Second operand 4 states and 67 transitions. [2024-10-24 19:27:58,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 218 flow [2024-10-24 19:27:58,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 204 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-24 19:27:58,255 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 146 flow [2024-10-24 19:27:58,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2024-10-24 19:27:58,256 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-10-24 19:27:58,258 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 146 flow [2024-10-24 19:27:58,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-10-24 19:27:58,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:27:58,259 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:27:58,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-24 19:27:58,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:27:58,460 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:27:58,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:27:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1301294495, now seen corresponding path program 1 times [2024-10-24 19:27:58,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:27:58,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723365967] [2024-10-24 19:27:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:27:58,461 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 [2024-10-24 19:27:58,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:27:58,464 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:27:58,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-24 19:27:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:27:58,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:27:58,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:27:58,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:27:58,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:27:58,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-10-24 19:27:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:27:58,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:27:58,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723365967] [2024-10-24 19:27:58,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723365967] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:27:58,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:27:58,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-24 19:27:58,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758418527] [2024-10-24 19:27:58,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:27:58,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 19:27:58,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:27:58,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 19:27:58,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 19:27:59,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 19:27:59,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 146 flow. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:27:59,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:27:59,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 19:27:59,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:27:59,344 INFO L124 PetriNetUnfolderBase]: 234/436 cut-off events. [2024-10-24 19:27:59,345 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-24 19:27:59,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 436 events. 234/436 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1826 event pairs, 82 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 852. Up to 220 conditions per place. [2024-10-24 19:27:59,348 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 44 selfloop transitions, 8 changer transitions 0/58 dead transitions. [2024-10-24 19:27:59,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 287 flow [2024-10-24 19:27:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:27:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:27:59,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-10-24 19:27:59,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5458333333333333 [2024-10-24 19:27:59,350 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 146 flow. Second operand 6 states and 131 transitions. [2024-10-24 19:27:59,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 287 flow [2024-10-24 19:27:59,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:27:59,353 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 167 flow [2024-10-24 19:27:59,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=167, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2024-10-24 19:27:59,354 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2024-10-24 19:27:59,354 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 167 flow [2024-10-24 19:27:59,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:27:59,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:27:59,354 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:27:59,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-10-24 19:27:59,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:27:59,555 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:27:59,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:27:59,556 INFO L85 PathProgramCache]: Analyzing trace with hash -731836715, now seen corresponding path program 1 times [2024-10-24 19:27:59,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:27:59,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754452204] [2024-10-24 19:27:59,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:27:59,557 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 [2024-10-24 19:27:59,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:27:59,558 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:27:59,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-24 19:27:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:27:59,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:27:59,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:27:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:27:59,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:27:59,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-10-24 19:27:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:27:59,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:27:59,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754452204] [2024-10-24 19:27:59,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754452204] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:27:59,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:27:59,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-24 19:27:59,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624904634] [2024-10-24 19:27:59,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:27:59,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 19:27:59,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:27:59,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 19:27:59,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 19:28:00,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-10-24 19:28:00,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 167 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:00,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:00,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-10-24 19:28:00,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:00,560 INFO L124 PetriNetUnfolderBase]: 419/733 cut-off events. [2024-10-24 19:28:00,560 INFO L125 PetriNetUnfolderBase]: For 97/121 co-relation queries the response was YES. [2024-10-24 19:28:00,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1586 conditions, 733 events. 419/733 cut-off events. For 97/121 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3103 event pairs, 123 based on Foata normal form. 0/585 useless extension candidates. Maximal degree in co-relation 1552. Up to 427 conditions per place. [2024-10-24 19:28:00,565 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 44 selfloop transitions, 9 changer transitions 0/57 dead transitions. [2024-10-24 19:28:00,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 310 flow [2024-10-24 19:28:00,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:28:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:28:00,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-10-24 19:28:00,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-10-24 19:28:00,567 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 167 flow. Second operand 6 states and 119 transitions. [2024-10-24 19:28:00,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 310 flow [2024-10-24 19:28:00,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 302 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:28:00,569 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 196 flow [2024-10-24 19:28:00,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=196, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-10-24 19:28:00,570 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2024-10-24 19:28:00,571 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 196 flow [2024-10-24 19:28:00,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:00,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:00,571 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:00,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-10-24 19:28:00,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:00,772 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:28:00,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:00,773 INFO L85 PathProgramCache]: Analyzing trace with hash -708511515, now seen corresponding path program 1 times [2024-10-24 19:28:00,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:00,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105695916] [2024-10-24 19:28:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:00,773 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 [2024-10-24 19:28:00,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:00,774 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:28:00,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-24 19:28:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:00,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 19:28:00,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:00,866 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 [2024-10-24 19:28:01,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:01,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:01,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:01,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:01,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105695916] [2024-10-24 19:28:01,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105695916] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:01,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:01,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2024-10-24 19:28:01,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482189803] [2024-10-24 19:28:01,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:01,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:28:01,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:01,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:28:01,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:28:03,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-10-24 19:28:03,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 196 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 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) [2024-10-24 19:28:03,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:03,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-10-24 19:28:03,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:04,622 INFO L124 PetriNetUnfolderBase]: 1077/1973 cut-off events. [2024-10-24 19:28:04,623 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2024-10-24 19:28:04,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4396 conditions, 1973 events. 1077/1973 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10842 event pairs, 693 based on Foata normal form. 0/1677 useless extension candidates. Maximal degree in co-relation 2989. Up to 635 conditions per place. [2024-10-24 19:28:04,635 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 93 selfloop transitions, 16 changer transitions 0/114 dead transitions. [2024-10-24 19:28:04,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 114 transitions, 612 flow [2024-10-24 19:28:04,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 19:28:04,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 19:28:04,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 227 transitions. [2024-10-24 19:28:04,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675 [2024-10-24 19:28:04,639 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 196 flow. Second operand 10 states and 227 transitions. [2024-10-24 19:28:04,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 114 transitions, 612 flow [2024-10-24 19:28:04,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 114 transitions, 592 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:28:04,645 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 252 flow [2024-10-24 19:28:04,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=252, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-10-24 19:28:04,646 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2024-10-24 19:28:04,646 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 252 flow [2024-10-24 19:28:04,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 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) [2024-10-24 19:28:04,647 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:04,647 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:04,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-24 19:28:04,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:04,848 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:28:04,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:04,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1212101200, now seen corresponding path program 1 times [2024-10-24 19:28:04,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:04,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906736125] [2024-10-24 19:28:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:04,849 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 [2024-10-24 19:28:04,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:04,852 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:28:04,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-24 19:28:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:04,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 19:28:04,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:04,944 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 [2024-10-24 19:28:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:28:05,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:28:05,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:05,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906736125] [2024-10-24 19:28:05,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906736125] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:05,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:05,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2024-10-24 19:28:05,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952051217] [2024-10-24 19:28:05,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:05,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:28:05,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:05,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:28:05,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:28:06,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-10-24 19:28:06,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 252 flow. Second operand has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 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) [2024-10-24 19:28:06,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:06,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-10-24 19:28:06,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:07,859 INFO L124 PetriNetUnfolderBase]: 1105/1917 cut-off events. [2024-10-24 19:28:07,859 INFO L125 PetriNetUnfolderBase]: For 970/994 co-relation queries the response was YES. [2024-10-24 19:28:07,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4708 conditions, 1917 events. 1105/1917 cut-off events. For 970/994 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 9479 event pairs, 663 based on Foata normal form. 0/1773 useless extension candidates. Maximal degree in co-relation 3704. Up to 681 conditions per place. [2024-10-24 19:28:07,871 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 79 selfloop transitions, 20 changer transitions 0/102 dead transitions. [2024-10-24 19:28:07,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 102 transitions, 606 flow [2024-10-24 19:28:07,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 19:28:07,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 19:28:07,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-10-24 19:28:07,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5075 [2024-10-24 19:28:07,874 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 252 flow. Second operand 10 states and 203 transitions. [2024-10-24 19:28:07,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 102 transitions, 606 flow [2024-10-24 19:28:07,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 102 transitions, 598 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:28:07,880 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 344 flow [2024-10-24 19:28:07,881 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=344, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-10-24 19:28:07,881 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2024-10-24 19:28:07,883 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 344 flow [2024-10-24 19:28:07,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 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) [2024-10-24 19:28:07,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:07,883 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-24 19:28:07,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-24 19:28:08,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:08,084 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:28:08,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:08,085 INFO L85 PathProgramCache]: Analyzing trace with hash -40732323, now seen corresponding path program 2 times [2024-10-24 19:28:08,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:08,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212991227] [2024-10-24 19:28:08,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:28:08,085 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 [2024-10-24 19:28:08,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:08,086 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:28:08,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-24 19:28:08,147 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:28:08,147 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:08,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 19:28:08,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:08,166 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 [2024-10-24 19:28:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:28:08,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:08,923 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:28:08,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:08,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212991227] [2024-10-24 19:28:08,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212991227] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:08,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:08,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-24 19:28:08,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518847144] [2024-10-24 19:28:08,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:08,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:28:08,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:08,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:28:08,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:28:09,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 19:28:09,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 344 flow. Second operand has 14 states, 14 states have (on average 15.571428571428571) internal successors, (218), 14 states have internal predecessors, (218), 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) [2024-10-24 19:28:09,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:09,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 19:28:09,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:11,458 INFO L124 PetriNetUnfolderBase]: 1046/1860 cut-off events. [2024-10-24 19:28:11,458 INFO L125 PetriNetUnfolderBase]: For 1200/1214 co-relation queries the response was YES. [2024-10-24 19:28:11,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5138 conditions, 1860 events. 1046/1860 cut-off events. For 1200/1214 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9775 event pairs, 810 based on Foata normal form. 6/1864 useless extension candidates. Maximal degree in co-relation 4030. Up to 1695 conditions per place. [2024-10-24 19:28:11,470 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 43 selfloop transitions, 29 changer transitions 0/78 dead transitions. [2024-10-24 19:28:11,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 78 transitions, 668 flow [2024-10-24 19:28:11,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-24 19:28:11,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-24 19:28:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 353 transitions. [2024-10-24 19:28:11,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42023809523809524 [2024-10-24 19:28:11,473 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 344 flow. Second operand 21 states and 353 transitions. [2024-10-24 19:28:11,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 78 transitions, 668 flow [2024-10-24 19:28:11,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 643 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:28:11,483 INFO L231 Difference]: Finished difference. Result has 88 places, 78 transitions, 587 flow [2024-10-24 19:28:11,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=587, PETRI_PLACES=88, PETRI_TRANSITIONS=78} [2024-10-24 19:28:11,485 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2024-10-24 19:28:11,485 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 78 transitions, 587 flow [2024-10-24 19:28:11,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.571428571428571) internal successors, (218), 14 states have internal predecessors, (218), 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) [2024-10-24 19:28:11,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:11,486 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:11,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-24 19:28:11,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:11,689 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:28:11,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:11,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1548659032, now seen corresponding path program 2 times [2024-10-24 19:28:11,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:11,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386355185] [2024-10-24 19:28:11,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:28:11,690 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 [2024-10-24 19:28:11,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:11,691 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:28:11,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-24 19:28:11,758 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 19:28:11,758 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:11,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 19:28:11,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:11,776 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 [2024-10-24 19:28:11,973 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 19:28:11,973 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:12,525 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 19:28:12,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:12,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386355185] [2024-10-24 19:28:12,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386355185] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:12,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:12,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-24 19:28:12,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054023790] [2024-10-24 19:28:12,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:12,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 19:28:12,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:12,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 19:28:12,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 19:28:13,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 19:28:13,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 78 transitions, 587 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 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) [2024-10-24 19:28:13,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:13,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 19:28:13,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:13,986 INFO L124 PetriNetUnfolderBase]: 1034/1824 cut-off events. [2024-10-24 19:28:13,986 INFO L125 PetriNetUnfolderBase]: For 1012/1012 co-relation queries the response was YES. [2024-10-24 19:28:13,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5079 conditions, 1824 events. 1034/1824 cut-off events. For 1012/1012 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9667 event pairs, 576 based on Foata normal form. 28/1852 useless extension candidates. Maximal degree in co-relation 5013. Up to 1264 conditions per place. [2024-10-24 19:28:13,998 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 74 selfloop transitions, 20 changer transitions 0/100 dead transitions. [2024-10-24 19:28:13,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 100 transitions, 870 flow [2024-10-24 19:28:14,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:28:14,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:28:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-10-24 19:28:14,001 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-10-24 19:28:14,001 INFO L175 Difference]: Start difference. First operand has 88 places, 78 transitions, 587 flow. Second operand 5 states and 105 transitions. [2024-10-24 19:28:14,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 100 transitions, 870 flow [2024-10-24 19:28:14,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 100 transitions, 776 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-10-24 19:28:14,011 INFO L231 Difference]: Finished difference. Result has 81 places, 77 transitions, 525 flow [2024-10-24 19:28:14,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=525, PETRI_PLACES=81, PETRI_TRANSITIONS=77} [2024-10-24 19:28:14,013 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 41 predicate places. [2024-10-24 19:28:14,014 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 77 transitions, 525 flow [2024-10-24 19:28:14,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 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) [2024-10-24 19:28:14,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:14,014 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:14,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-24 19:28:14,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:14,215 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:28:14,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:14,215 INFO L85 PathProgramCache]: Analyzing trace with hash 40709021, now seen corresponding path program 2 times [2024-10-24 19:28:14,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:14,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242928822] [2024-10-24 19:28:14,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:28:14,216 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 [2024-10-24 19:28:14,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:14,217 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:28:14,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-24 19:28:14,277 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 19:28:14,277 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:14,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:28:14,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:14,289 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 [2024-10-24 19:28:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 19:28:14,470 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:14,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:14,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242928822] [2024-10-24 19:28:14,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242928822] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:14,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:14,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:28:14,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992134562] [2024-10-24 19:28:14,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:14,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:28:14,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:14,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:28:14,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:28:14,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-10-24 19:28:14,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 77 transitions, 525 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-24 19:28:14,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:14,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-10-24 19:28:14,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:14,864 INFO L124 PetriNetUnfolderBase]: 1042/1798 cut-off events. [2024-10-24 19:28:14,864 INFO L125 PetriNetUnfolderBase]: For 1638/1638 co-relation queries the response was YES. [2024-10-24 19:28:14,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5146 conditions, 1798 events. 1042/1798 cut-off events. For 1638/1638 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9082 event pairs, 495 based on Foata normal form. 48/1844 useless extension candidates. Maximal degree in co-relation 5090. Up to 1057 conditions per place. [2024-10-24 19:28:14,875 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 58 selfloop transitions, 26 changer transitions 0/87 dead transitions. [2024-10-24 19:28:14,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 87 transitions, 746 flow [2024-10-24 19:28:14,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:28:14,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:28:14,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-10-24 19:28:14,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-10-24 19:28:14,877 INFO L175 Difference]: Start difference. First operand has 81 places, 77 transitions, 525 flow. Second operand 5 states and 92 transitions. [2024-10-24 19:28:14,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 87 transitions, 746 flow [2024-10-24 19:28:14,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 87 transitions, 678 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 19:28:14,884 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 505 flow [2024-10-24 19:28:14,884 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=505, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2024-10-24 19:28:14,885 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2024-10-24 19:28:14,885 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 505 flow [2024-10-24 19:28:14,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-24 19:28:14,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:14,885 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:14,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-24 19:28:15,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:15,086 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:28:15,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:15,086 INFO L85 PathProgramCache]: Analyzing trace with hash 892773046, now seen corresponding path program 1 times [2024-10-24 19:28:15,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:15,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141950556] [2024-10-24 19:28:15,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:15,087 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 [2024-10-24 19:28:15,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:15,094 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:28:15,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-24 19:28:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:15,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:28:15,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:15,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:15,205 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:15,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:15,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141950556] [2024-10-24 19:28:15,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141950556] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:15,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:15,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:28:15,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980400184] [2024-10-24 19:28:15,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:15,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:28:15,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:15,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:28:15,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:28:15,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-24 19:28:15,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 505 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-10-24 19:28:15,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:15,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-24 19:28:15,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:15,403 INFO L124 PetriNetUnfolderBase]: 1031/1773 cut-off events. [2024-10-24 19:28:15,403 INFO L125 PetriNetUnfolderBase]: For 1184/1184 co-relation queries the response was YES. [2024-10-24 19:28:15,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5020 conditions, 1773 events. 1031/1773 cut-off events. For 1184/1184 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8811 event pairs, 303 based on Foata normal form. 3/1774 useless extension candidates. Maximal degree in co-relation 4966. Up to 1297 conditions per place. [2024-10-24 19:28:15,413 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 88 selfloop transitions, 8 changer transitions 1/100 dead transitions. [2024-10-24 19:28:15,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 100 transitions, 816 flow [2024-10-24 19:28:15,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:28:15,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:28:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-10-24 19:28:15,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-10-24 19:28:15,414 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 505 flow. Second operand 3 states and 85 transitions. [2024-10-24 19:28:15,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 100 transitions, 816 flow [2024-10-24 19:28:15,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 100 transitions, 746 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:28:15,418 INFO L231 Difference]: Finished difference. Result has 75 places, 81 transitions, 533 flow [2024-10-24 19:28:15,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=533, PETRI_PLACES=75, PETRI_TRANSITIONS=81} [2024-10-24 19:28:15,419 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 35 predicate places. [2024-10-24 19:28:15,419 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 81 transitions, 533 flow [2024-10-24 19:28:15,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-10-24 19:28:15,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:15,420 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:15,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-24 19:28:15,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:15,620 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:28:15,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:15,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1277123276, now seen corresponding path program 1 times [2024-10-24 19:28:15,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:15,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937209657] [2024-10-24 19:28:15,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:15,621 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 [2024-10-24 19:28:15,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:15,624 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:28:15,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-24 19:28:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:15,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:28:15,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:15,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:15,712 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:15,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:15,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937209657] [2024-10-24 19:28:15,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937209657] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:15,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:15,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:28:15,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142743030] [2024-10-24 19:28:15,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:15,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:28:15,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:15,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:28:15,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:28:15,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-24 19:28:15,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 81 transitions, 533 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:15,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:15,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-24 19:28:15,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:15,916 INFO L124 PetriNetUnfolderBase]: 1006/1740 cut-off events. [2024-10-24 19:28:15,916 INFO L125 PetriNetUnfolderBase]: For 944/944 co-relation queries the response was YES. [2024-10-24 19:28:15,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4891 conditions, 1740 events. 1006/1740 cut-off events. For 944/944 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 9042 event pairs, 373 based on Foata normal form. 18/1750 useless extension candidates. Maximal degree in co-relation 4837. Up to 982 conditions per place. [2024-10-24 19:28:15,927 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 120 selfloop transitions, 8 changer transitions 0/131 dead transitions. [2024-10-24 19:28:15,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 131 transitions, 1011 flow [2024-10-24 19:28:15,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:28:15,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:28:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-10-24 19:28:15,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.69375 [2024-10-24 19:28:15,929 INFO L175 Difference]: Start difference. First operand has 75 places, 81 transitions, 533 flow. Second operand 4 states and 111 transitions. [2024-10-24 19:28:15,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 131 transitions, 1011 flow [2024-10-24 19:28:15,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 131 transitions, 995 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:28:15,934 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 560 flow [2024-10-24 19:28:15,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=560, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2024-10-24 19:28:15,935 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 39 predicate places. [2024-10-24 19:28:15,935 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 560 flow [2024-10-24 19:28:15,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:15,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:15,936 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:15,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-24 19:28:16,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:16,137 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:28:16,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:16,138 INFO L85 PathProgramCache]: Analyzing trace with hash -437753348, now seen corresponding path program 2 times [2024-10-24 19:28:16,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:16,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256207652] [2024-10-24 19:28:16,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:28:16,138 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 [2024-10-24 19:28:16,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:16,139 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:28:16,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-24 19:28:16,191 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 19:28:16,191 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:16,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:28:16,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:16,218 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:16,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:16,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256207652] [2024-10-24 19:28:16,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256207652] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:16,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:16,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:28:16,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038281642] [2024-10-24 19:28:16,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:16,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:28:16,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:16,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:28:16,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:28:16,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-24 19:28:16,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 560 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:16,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:16,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-24 19:28:16,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:16,416 INFO L124 PetriNetUnfolderBase]: 1096/1935 cut-off events. [2024-10-24 19:28:16,416 INFO L125 PetriNetUnfolderBase]: For 1947/1947 co-relation queries the response was YES. [2024-10-24 19:28:16,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5990 conditions, 1935 events. 1096/1935 cut-off events. For 1947/1947 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 10156 event pairs, 342 based on Foata normal form. 24/1959 useless extension candidates. Maximal degree in co-relation 5934. Up to 1244 conditions per place. [2024-10-24 19:28:16,426 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 108 selfloop transitions, 13 changer transitions 0/124 dead transitions. [2024-10-24 19:28:16,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 124 transitions, 1024 flow [2024-10-24 19:28:16,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:28:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:28:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-10-24 19:28:16,428 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-10-24 19:28:16,428 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 560 flow. Second operand 4 states and 105 transitions. [2024-10-24 19:28:16,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 124 transitions, 1024 flow [2024-10-24 19:28:16,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 124 transitions, 988 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:28:16,436 INFO L231 Difference]: Finished difference. Result has 83 places, 95 transitions, 705 flow [2024-10-24 19:28:16,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=705, PETRI_PLACES=83, PETRI_TRANSITIONS=95} [2024-10-24 19:28:16,437 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 43 predicate places. [2024-10-24 19:28:16,437 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 95 transitions, 705 flow [2024-10-24 19:28:16,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:16,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:16,438 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:28:16,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2024-10-24 19:28:16,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:16,638 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:28:16,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:16,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1698897302, now seen corresponding path program 3 times [2024-10-24 19:28:16,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:16,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796312585] [2024-10-24 19:28:16,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:28:16,640 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 [2024-10-24 19:28:16,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:16,643 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:28:16,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-24 19:28:16,696 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-24 19:28:16,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:16,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:28:16,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:16,722 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:16,722 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:16,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796312585] [2024-10-24 19:28:16,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796312585] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:16,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:16,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:28:16,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067042847] [2024-10-24 19:28:16,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:16,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:28:16,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:16,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:28:16,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:28:16,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-24 19:28:16,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 95 transitions, 705 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:16,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:16,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-24 19:28:16,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:17,026 INFO L124 PetriNetUnfolderBase]: 1057/1830 cut-off events. [2024-10-24 19:28:17,026 INFO L125 PetriNetUnfolderBase]: For 2446/2446 co-relation queries the response was YES. [2024-10-24 19:28:17,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6256 conditions, 1830 events. 1057/1830 cut-off events. For 2446/2446 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9677 event pairs, 355 based on Foata normal form. 24/1846 useless extension candidates. Maximal degree in co-relation 6199. Up to 1015 conditions per place. [2024-10-24 19:28:17,035 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 124 selfloop transitions, 23 changer transitions 0/150 dead transitions. [2024-10-24 19:28:17,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 150 transitions, 1277 flow [2024-10-24 19:28:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:28:17,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:28:17,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-10-24 19:28:17,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.70625 [2024-10-24 19:28:17,037 INFO L175 Difference]: Start difference. First operand has 83 places, 95 transitions, 705 flow. Second operand 4 states and 113 transitions. [2024-10-24 19:28:17,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 150 transitions, 1277 flow [2024-10-24 19:28:17,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 150 transitions, 1265 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-24 19:28:17,049 INFO L231 Difference]: Finished difference. Result has 88 places, 101 transitions, 839 flow [2024-10-24 19:28:17,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=839, PETRI_PLACES=88, PETRI_TRANSITIONS=101} [2024-10-24 19:28:17,050 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2024-10-24 19:28:17,050 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 101 transitions, 839 flow [2024-10-24 19:28:17,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:17,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:17,051 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] [2024-10-24 19:28:17,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2024-10-24 19:28:17,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:17,252 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:28:17,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:17,252 INFO L85 PathProgramCache]: Analyzing trace with hash 72773020, now seen corresponding path program 1 times [2024-10-24 19:28:17,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:17,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624630876] [2024-10-24 19:28:17,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:17,253 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 [2024-10-24 19:28:17,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:17,254 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:28:17,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-24 19:28:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:17,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:28:17,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:17,347 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:17,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:17,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624630876] [2024-10-24 19:28:17,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624630876] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:17,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:17,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:28:17,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652873409] [2024-10-24 19:28:17,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:17,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:28:17,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:17,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:28:17,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:28:17,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 19:28:17,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 101 transitions, 839 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-10-24 19:28:17,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:17,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 19:28:17,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:17,612 INFO L124 PetriNetUnfolderBase]: 1340/2272 cut-off events. [2024-10-24 19:28:17,612 INFO L125 PetriNetUnfolderBase]: For 5707/5707 co-relation queries the response was YES. [2024-10-24 19:28:17,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8573 conditions, 2272 events. 1340/2272 cut-off events. For 5707/5707 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 11636 event pairs, 396 based on Foata normal form. 27/2299 useless extension candidates. Maximal degree in co-relation 8513. Up to 1383 conditions per place. [2024-10-24 19:28:17,623 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 126 selfloop transitions, 18 changer transitions 0/146 dead transitions. [2024-10-24 19:28:17,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 146 transitions, 1371 flow [2024-10-24 19:28:17,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:28:17,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:28:17,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-10-24 19:28:17,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-10-24 19:28:17,625 INFO L175 Difference]: Start difference. First operand has 88 places, 101 transitions, 839 flow. Second operand 4 states and 108 transitions. [2024-10-24 19:28:17,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 146 transitions, 1371 flow [2024-10-24 19:28:17,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 146 transitions, 1348 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-24 19:28:17,635 INFO L231 Difference]: Finished difference. Result has 92 places, 110 transitions, 964 flow [2024-10-24 19:28:17,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=964, PETRI_PLACES=92, PETRI_TRANSITIONS=110} [2024-10-24 19:28:17,636 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 52 predicate places. [2024-10-24 19:28:17,636 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 110 transitions, 964 flow [2024-10-24 19:28:17,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-10-24 19:28:17,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:17,636 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] [2024-10-24 19:28:17,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-10-24 19:28:17,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:17,837 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:28:17,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:17,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1502726180, now seen corresponding path program 2 times [2024-10-24 19:28:17,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:17,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288765389] [2024-10-24 19:28:17,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:28:17,838 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 [2024-10-24 19:28:17,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:17,839 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:28:17,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-10-24 19:28:17,886 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 19:28:17,887 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:17,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:28:17,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 19:28:17,906 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:28:17,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:17,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288765389] [2024-10-24 19:28:17,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288765389] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:28:17,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:28:17,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:28:17,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157870190] [2024-10-24 19:28:17,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:17,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:28:17,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:17,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:28:17,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:28:17,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 19:28:17,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 110 transitions, 964 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-10-24 19:28:17,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:17,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 19:28:17,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:18,139 INFO L124 PetriNetUnfolderBase]: 1202/2026 cut-off events. [2024-10-24 19:28:18,140 INFO L125 PetriNetUnfolderBase]: For 6736/6736 co-relation queries the response was YES. [2024-10-24 19:28:18,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8065 conditions, 2026 events. 1202/2026 cut-off events. For 6736/6736 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 10028 event pairs, 479 based on Foata normal form. 48/2074 useless extension candidates. Maximal degree in co-relation 8003. Up to 1318 conditions per place. [2024-10-24 19:28:18,148 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 139 selfloop transitions, 19 changer transitions 1/161 dead transitions. [2024-10-24 19:28:18,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 161 transitions, 1750 flow [2024-10-24 19:28:18,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:28:18,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:28:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-10-24 19:28:18,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-10-24 19:28:18,150 INFO L175 Difference]: Start difference. First operand has 92 places, 110 transitions, 964 flow. Second operand 4 states and 98 transitions. [2024-10-24 19:28:18,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 161 transitions, 1750 flow [2024-10-24 19:28:18,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 161 transitions, 1727 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 19:28:18,163 INFO L231 Difference]: Finished difference. Result has 96 places, 111 transitions, 1017 flow [2024-10-24 19:28:18,163 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1017, PETRI_PLACES=96, PETRI_TRANSITIONS=111} [2024-10-24 19:28:18,163 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 56 predicate places. [2024-10-24 19:28:18,164 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 111 transitions, 1017 flow [2024-10-24 19:28:18,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-10-24 19:28:18,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:18,164 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] [2024-10-24 19:28:18,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-10-24 19:28:18,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:18,365 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:28:18,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:18,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1935282272, now seen corresponding path program 1 times [2024-10-24 19:28:18,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:18,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797186076] [2024-10-24 19:28:18,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:18,366 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 [2024-10-24 19:28:18,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:18,367 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:28:18,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-10-24 19:28:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:18,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:28:18,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:18,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 19:28:18,515 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 [2024-10-24 19:28:18,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:18,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:19,798 INFO L349 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2024-10-24 19:28:19,799 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 85 treesize of output 23 [2024-10-24 19:28:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:19,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:19,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797186076] [2024-10-24 19:28:19,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797186076] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:19,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:19,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-10-24 19:28:19,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417589275] [2024-10-24 19:28:19,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:19,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 19:28:19,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:19,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 19:28:19,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=35, Unknown=1, NotChecked=0, Total=56 [2024-10-24 19:28:21,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 19:28:22,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 19:28:23,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 19:28:24,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 19:28:26,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 19:28:27,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 19:28:28,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 19:28:30,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 19:28:30,062 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-24 19:28:30,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 111 transitions, 1017 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:30,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:30,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-24 19:28:30,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:34,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 19:28:38,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:28:42,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-24 19:28:42,511 INFO L124 PetriNetUnfolderBase]: 1572/2699 cut-off events. [2024-10-24 19:28:42,511 INFO L125 PetriNetUnfolderBase]: For 9153/9153 co-relation queries the response was YES. [2024-10-24 19:28:42,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11160 conditions, 2699 events. 1572/2699 cut-off events. For 9153/9153 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 14593 event pairs, 200 based on Foata normal form. 3/2702 useless extension candidates. Maximal degree in co-relation 11096. Up to 1618 conditions per place. [2024-10-24 19:28:42,526 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 153 selfloop transitions, 32 changer transitions 3/191 dead transitions. [2024-10-24 19:28:42,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 191 transitions, 1979 flow [2024-10-24 19:28:42,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:28:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:28:42,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-10-24 19:28:42,529 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-24 19:28:42,529 INFO L175 Difference]: Start difference. First operand has 96 places, 111 transitions, 1017 flow. Second operand 6 states and 108 transitions. [2024-10-24 19:28:42,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 191 transitions, 1979 flow [2024-10-24 19:28:42,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 191 transitions, 1917 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:28:42,547 INFO L231 Difference]: Finished difference. Result has 101 places, 128 transitions, 1233 flow [2024-10-24 19:28:42,547 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1233, PETRI_PLACES=101, PETRI_TRANSITIONS=128} [2024-10-24 19:28:42,548 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 61 predicate places. [2024-10-24 19:28:42,548 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 128 transitions, 1233 flow [2024-10-24 19:28:42,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 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) [2024-10-24 19:28:42,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:42,548 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] [2024-10-24 19:28:42,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2024-10-24 19:28:42,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:42,749 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:28:42,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:42,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1171922934, now seen corresponding path program 2 times [2024-10-24 19:28:42,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:42,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712220563] [2024-10-24 19:28:42,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:28:42,750 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 [2024-10-24 19:28:42,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:42,753 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:28:42,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-10-24 19:28:42,821 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:28:42,821 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:42,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:28:42,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:42,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 19:28:42,920 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 [2024-10-24 19:28:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:42,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:44,135 INFO L349 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2024-10-24 19:28:44,135 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 85 treesize of output 23 [2024-10-24 19:28:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:44,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:44,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712220563] [2024-10-24 19:28:44,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712220563] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 19:28:44,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 19:28:44,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-10-24 19:28:44,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300967354] [2024-10-24 19:28:44,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:28:44,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:28:44,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:44,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:28:44,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=35, Unknown=1, NotChecked=0, Total=56 [2024-10-24 19:28:44,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-24 19:28:44,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 128 transitions, 1233 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) [2024-10-24 19:28:44,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:44,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-24 19:28:44,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:48,397 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 [] [2024-10-24 19:28:48,673 INFO L124 PetriNetUnfolderBase]: 1660/2892 cut-off events. [2024-10-24 19:28:48,673 INFO L125 PetriNetUnfolderBase]: For 10480/10480 co-relation queries the response was YES. [2024-10-24 19:28:48,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12272 conditions, 2892 events. 1660/2892 cut-off events. For 10480/10480 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 16320 event pairs, 341 based on Foata normal form. 3/2895 useless extension candidates. Maximal degree in co-relation 12206. Up to 2249 conditions per place. [2024-10-24 19:28:48,689 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 150 selfloop transitions, 24 changer transitions 2/179 dead transitions. [2024-10-24 19:28:48,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 179 transitions, 2032 flow [2024-10-24 19:28:48,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:28:48,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:28:48,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-10-24 19:28:48,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-10-24 19:28:48,691 INFO L175 Difference]: Start difference. First operand has 101 places, 128 transitions, 1233 flow. Second operand 4 states and 105 transitions. [2024-10-24 19:28:48,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 179 transitions, 2032 flow [2024-10-24 19:28:48,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 179 transitions, 1983 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-10-24 19:28:48,709 INFO L231 Difference]: Finished difference. Result has 105 places, 137 transitions, 1396 flow [2024-10-24 19:28:48,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1396, PETRI_PLACES=105, PETRI_TRANSITIONS=137} [2024-10-24 19:28:48,710 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 65 predicate places. [2024-10-24 19:28:48,710 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 137 transitions, 1396 flow [2024-10-24 19:28:48,711 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) [2024-10-24 19:28:48,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:48,711 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] [2024-10-24 19:28:48,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2024-10-24 19:28:48,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:48,912 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:28:48,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:48,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2120883119, now seen corresponding path program 1 times [2024-10-24 19:28:48,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:48,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705102385] [2024-10-24 19:28:48,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:28:48,913 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 [2024-10-24 19:28:48,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:48,916 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:28:48,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-10-24 19:28:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:28:48,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 19:28:48,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:49,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:49,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:49,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705102385] [2024-10-24 19:28:49,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705102385] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:49,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:49,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2024-10-24 19:28:49,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509490411] [2024-10-24 19:28:49,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:49,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:28:49,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:49,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:28:49,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:28:49,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 19:28:49,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 137 transitions, 1396 flow. Second operand has 11 states, 11 states have (on average 16.545454545454547) internal successors, (182), 11 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:49,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:49,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 19:28:49,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:49,878 INFO L124 PetriNetUnfolderBase]: 1769/3127 cut-off events. [2024-10-24 19:28:49,878 INFO L125 PetriNetUnfolderBase]: For 9760/9760 co-relation queries the response was YES. [2024-10-24 19:28:49,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13436 conditions, 3127 events. 1769/3127 cut-off events. For 9760/9760 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 18454 event pairs, 567 based on Foata normal form. 27/3154 useless extension candidates. Maximal degree in co-relation 13367. Up to 1759 conditions per place. [2024-10-24 19:28:49,895 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 182 selfloop transitions, 63 changer transitions 1/248 dead transitions. [2024-10-24 19:28:49,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 248 transitions, 2550 flow [2024-10-24 19:28:49,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 19:28:49,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 19:28:49,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 274 transitions. [2024-10-24 19:28:49,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5269230769230769 [2024-10-24 19:28:49,897 INFO L175 Difference]: Start difference. First operand has 105 places, 137 transitions, 1396 flow. Second operand 13 states and 274 transitions. [2024-10-24 19:28:49,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 248 transitions, 2550 flow [2024-10-24 19:28:49,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 248 transitions, 2520 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-24 19:28:49,920 INFO L231 Difference]: Finished difference. Result has 125 places, 172 transitions, 1889 flow [2024-10-24 19:28:49,920 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1889, PETRI_PLACES=125, PETRI_TRANSITIONS=172} [2024-10-24 19:28:49,920 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 85 predicate places. [2024-10-24 19:28:49,921 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 172 transitions, 1889 flow [2024-10-24 19:28:49,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.545454545454547) internal successors, (182), 11 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:28:49,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:49,922 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] [2024-10-24 19:28:49,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2024-10-24 19:28:50,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:50,122 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:28:50,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:50,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1568134109, now seen corresponding path program 2 times [2024-10-24 19:28:50,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:50,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815837831] [2024-10-24 19:28:50,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:28:50,123 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 [2024-10-24 19:28:50,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:50,125 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:28:50,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-10-24 19:28:50,205 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:28:50,205 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:50,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 19:28:50,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:50,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:50,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:50,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:50,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815837831] [2024-10-24 19:28:50,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815837831] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:50,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:50,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2024-10-24 19:28:50,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383927221] [2024-10-24 19:28:50,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:50,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 19:28:50,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:50,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 19:28:50,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-10-24 19:28:50,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 19:28:50,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 172 transitions, 1889 flow. Second operand has 13 states, 13 states have (on average 16.23076923076923) internal successors, (211), 13 states have internal predecessors, (211), 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) [2024-10-24 19:28:50,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:50,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 19:28:50,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:52,205 INFO L124 PetriNetUnfolderBase]: 3419/6091 cut-off events. [2024-10-24 19:28:52,205 INFO L125 PetriNetUnfolderBase]: For 31929/31929 co-relation queries the response was YES. [2024-10-24 19:28:52,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28894 conditions, 6091 events. 3419/6091 cut-off events. For 31929/31929 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 39283 event pairs, 197 based on Foata normal form. 54/6145 useless extension candidates. Maximal degree in co-relation 28817. Up to 1092 conditions per place. [2024-10-24 19:28:52,241 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 340 selfloop transitions, 399 changer transitions 1/742 dead transitions. [2024-10-24 19:28:52,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 742 transitions, 8961 flow [2024-10-24 19:28:52,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-24 19:28:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-10-24 19:28:52,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 708 transitions. [2024-10-24 19:28:52,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5363636363636364 [2024-10-24 19:28:52,243 INFO L175 Difference]: Start difference. First operand has 125 places, 172 transitions, 1889 flow. Second operand 33 states and 708 transitions. [2024-10-24 19:28:52,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 742 transitions, 8961 flow [2024-10-24 19:28:52,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 742 transitions, 8786 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-10-24 19:28:52,319 INFO L231 Difference]: Finished difference. Result has 172 places, 516 transitions, 7135 flow [2024-10-24 19:28:52,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=7135, PETRI_PLACES=172, PETRI_TRANSITIONS=516} [2024-10-24 19:28:52,322 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 132 predicate places. [2024-10-24 19:28:52,322 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 516 transitions, 7135 flow [2024-10-24 19:28:52,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.23076923076923) internal successors, (211), 13 states have internal predecessors, (211), 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) [2024-10-24 19:28:52,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:52,322 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] [2024-10-24 19:28:52,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2024-10-24 19:28:52,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:52,523 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:28:52,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:52,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1444729847, now seen corresponding path program 3 times [2024-10-24 19:28:52,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:52,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387572239] [2024-10-24 19:28:52,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:28:52,524 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 [2024-10-24 19:28:52,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:52,525 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:28:52,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2024-10-24 19:28:52,588 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-24 19:28:52,588 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:52,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 19:28:52,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:52,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:28:52,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:28:52,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:28:52,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387572239] [2024-10-24 19:28:52,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387572239] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:28:52,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:28:52,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2024-10-24 19:28:52,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790472469] [2024-10-24 19:28:52,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:28:52,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 19:28:52,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:28:52,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 19:28:52,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-24 19:28:52,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-24 19:28:52,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 516 transitions, 7135 flow. Second operand has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 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) [2024-10-24 19:28:52,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:28:52,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-24 19:28:52,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:28:55,876 INFO L124 PetriNetUnfolderBase]: 4442/7921 cut-off events. [2024-10-24 19:28:55,876 INFO L125 PetriNetUnfolderBase]: For 65507/65507 co-relation queries the response was YES. [2024-10-24 19:28:55,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46202 conditions, 7921 events. 4442/7921 cut-off events. For 65507/65507 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 54223 event pairs, 702 based on Foata normal form. 39/7960 useless extension candidates. Maximal degree in co-relation 46109. Up to 2470 conditions per place. [2024-10-24 19:28:55,935 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 507 selfloop transitions, 554 changer transitions 4/1067 dead transitions. [2024-10-24 19:28:55,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 1067 transitions, 16224 flow [2024-10-24 19:28:55,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-24 19:28:55,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-24 19:28:55,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 588 transitions. [2024-10-24 19:28:55,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-10-24 19:28:55,938 INFO L175 Difference]: Start difference. First operand has 172 places, 516 transitions, 7135 flow. Second operand 28 states and 588 transitions. [2024-10-24 19:28:55,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 1067 transitions, 16224 flow [2024-10-24 19:28:56,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 1067 transitions, 13965 flow, removed 931 selfloop flow, removed 5 redundant places. [2024-10-24 19:28:56,243 INFO L231 Difference]: Finished difference. Result has 208 places, 848 transitions, 12262 flow [2024-10-24 19:28:56,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6162, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=12262, PETRI_PLACES=208, PETRI_TRANSITIONS=848} [2024-10-24 19:28:56,244 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 168 predicate places. [2024-10-24 19:28:56,244 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 848 transitions, 12262 flow [2024-10-24 19:28:56,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.333333333333332) internal successors, (196), 12 states have internal predecessors, (196), 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) [2024-10-24 19:28:56,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:28:56,245 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] [2024-10-24 19:28:56,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2024-10-24 19:28:56,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:28:56,445 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-24 19:28:56,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:28:56,446 INFO L85 PathProgramCache]: Analyzing trace with hash 763666211, now seen corresponding path program 4 times [2024-10-24 19:28:56,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:28:56,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626345022] [2024-10-24 19:28:56,446 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 19:28:56,446 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 [2024-10-24 19:28:56,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:28:56,449 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:28:56,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-10-24 19:28:56,518 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 19:28:56,519 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:28:56,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-24 19:28:56,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:28:56,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 17 [2024-10-24 19:28:56,842 INFO L349 Elim1Store]: treesize reduction 164, result has 7.3 percent of original size [2024-10-24 19:28:56,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 28 case distinctions, treesize of input 194 treesize of output 98 [2024-10-24 19:28:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:28:56,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:29:01,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1223 treesize of output 1167