./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 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f5c6e2b4939ff0e3b5a44ab7f8c3e5d18f7e9fd12beb8fad487ea501e8fa48b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:03:29,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:03:29,593 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 20:03:29,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:03:29,601 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:03:29,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:03:29,635 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:03:29,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:03:29,637 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:03:29,637 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:03:29,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:03:29,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:03:29,638 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:03:29,639 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:03:29,641 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:03:29,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:03:29,642 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:03:29,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:03:29,642 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:03:29,643 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:03:29,643 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:03:29,647 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:03:29,647 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:03:29,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:03:29,647 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:03:29,648 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:03:29,648 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:03:29,648 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:03:29,648 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:03:29,649 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:03:29,649 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:03:29,649 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:03:29,649 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:03:29,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:03:29,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:03:29,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:03:29,650 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 20:03:29,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 20:03:29,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:03:29,651 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:03:29,651 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:03:29,653 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:03:29,653 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5c6e2b4939ff0e3b5a44ab7f8c3e5d18f7e9fd12beb8fad487ea501e8fa48b [2024-10-11 20:03:29,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:03:29,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:03:29,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:03:29,912 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:03:29,912 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:03:29,913 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c [2024-10-11 20:03:31,221 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:03:31,370 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:03:31,370 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c [2024-10-11 20:03:31,376 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b8ffc1d75/ce20b74d4bd941559b1dbd8078543a1f/FLAG344a6df82 [2024-10-11 20:03:31,394 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b8ffc1d75/ce20b74d4bd941559b1dbd8078543a1f [2024-10-11 20:03:31,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:03:31,397 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:03:31,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:03:31,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:03:31,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:03:31,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:03:31" (1/1) ... [2024-10-11 20:03:31,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44404bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:31, skipping insertion in model container [2024-10-11 20:03:31,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:03:31" (1/1) ... [2024-10-11 20:03:31,428 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:03:31,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:03:31,609 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 20:03:31,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1e1e3130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:31, skipping insertion in model container [2024-10-11 20:03:31,610 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:03:31,611 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 20:03:31,613 INFO L158 Benchmark]: Toolchain (without parser) took 214.60ms. Allocated memory is still 148.9MB. Free memory was 79.2MB in the beginning and 67.9MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 20:03:31,613 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 148.9MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 20:03:31,614 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.17ms. Allocated memory is still 148.9MB. Free memory was 79.0MB in the beginning and 67.9MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 20:03:31,615 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 148.9MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 212.17ms. Allocated memory is still 148.9MB. Free memory was 79.0MB in the beginning and 67.9MB in the end (delta: 11.1MB). 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-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f5c6e2b4939ff0e3b5a44ab7f8c3e5d18f7e9fd12beb8fad487ea501e8fa48b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:03:33,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:03:33,500 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 20:03:33,504 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:03:33,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:03:33,528 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:03:33,530 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:03:33,530 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:03:33,531 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:03:33,531 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:03:33,531 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:03:33,532 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:03:33,532 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:03:33,534 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:03:33,534 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:03:33,534 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:03:33,534 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:03:33,535 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:03:33,535 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:03:33,535 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:03:33,538 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:03:33,538 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:03:33,538 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:03:33,538 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:03:33,539 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:03:33,539 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 20:03:33,539 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:03:33,539 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 20:03:33,539 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:03:33,539 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:03:33,539 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:03:33,540 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:03:33,540 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:03:33,540 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:03:33,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:03:33,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:03:33,540 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:03:33,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:03:33,541 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 20:03:33,541 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 20:03:33,542 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:03:33,542 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:03:33,543 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:03:33,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:03:33,543 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 20:03:33,543 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5c6e2b4939ff0e3b5a44ab7f8c3e5d18f7e9fd12beb8fad487ea501e8fa48b [2024-10-11 20:03:33,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:03:33,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:03:33,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:03:33,828 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:03:33,829 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:03:33,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c [2024-10-11 20:03:35,214 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:03:35,369 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:03:35,370 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-2.wvr.c [2024-10-11 20:03:35,376 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c331e160e/172256fd735e41cdab7a6d2e4eea646c/FLAG7417e9860 [2024-10-11 20:03:35,390 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/c331e160e/172256fd735e41cdab7a6d2e4eea646c [2024-10-11 20:03:35,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:03:35,394 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:03:35,396 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:03:35,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:03:35,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:03:35,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:03:35" (1/1) ... [2024-10-11 20:03:35,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0ea594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:35, skipping insertion in model container [2024-10-11 20:03:35,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:03:35" (1/1) ... [2024-10-11 20:03:35,451 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:03:35,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:03:35,733 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 20:03:35,741 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:03:35,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:03:35,775 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 20:03:35,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:03:35,845 INFO L204 MainTranslator]: Completed translation [2024-10-11 20:03:35,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:35 WrapperNode [2024-10-11 20:03:35,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:03:35,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 20:03:35,847 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 20:03:35,847 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 20:03:35,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:35" (1/1) ... [2024-10-11 20:03:35,867 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:35" (1/1) ... [2024-10-11 20:03:35,900 INFO L138 Inliner]: procedures = 25, calls = 24, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2024-10-11 20:03:35,907 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 20:03:35,908 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 20:03:35,908 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 20:03:35,908 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 20:03:35,916 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:35" (1/1) ... [2024-10-11 20:03:35,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:35" (1/1) ... [2024-10-11 20:03:35,927 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:35" (1/1) ... [2024-10-11 20:03:35,946 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]. [2024-10-11 20:03:35,947 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:35" (1/1) ... [2024-10-11 20:03:35,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:35" (1/1) ... [2024-10-11 20:03:35,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:35" (1/1) ... [2024-10-11 20:03:35,955 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:35" (1/1) ... [2024-10-11 20:03:35,956 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:35" (1/1) ... [2024-10-11 20:03:35,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:35" (1/1) ... [2024-10-11 20:03:35,959 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 20:03:35,961 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 20:03:35,961 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 20:03:35,961 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 20:03:35,962 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:35" (1/1) ... [2024-10-11 20:03:35,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:03:35,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:03:36,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 20:03:36,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 20:03:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 20:03:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 20:03:36,037 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 20:03:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 20:03:36,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 20:03:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 20:03:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 20:03:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 20:03:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 20:03:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 20:03:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 20:03:36,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 20:03:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 20:03:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 20:03:36,040 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 20:03:36,134 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 20:03:36,136 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 20:03:36,453 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 20:03:36,453 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 20:03:36,686 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 20:03:36,686 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 20:03:36,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:03:36 BoogieIcfgContainer [2024-10-11 20:03:36,687 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 20:03:36,689 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 20:03:36,690 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 20:03:36,692 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 20:03:36,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 08:03:35" (1/3) ... [2024-10-11 20:03:36,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd59c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:03:36, skipping insertion in model container [2024-10-11 20:03:36,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:03:35" (2/3) ... [2024-10-11 20:03:36,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd59c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:03:36, skipping insertion in model container [2024-10-11 20:03:36,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:03:36" (3/3) ... [2024-10-11 20:03:36,694 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-2.wvr.c [2024-10-11 20:03:36,706 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 20:03:36,706 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-11 20:03:36,706 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 20:03:36,747 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 20:03:36,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2024-10-11 20:03:36,799 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-10-11 20:03:36,801 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 20:03:36,803 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. [2024-10-11 20:03:36,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2024-10-11 20:03:36,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 86 flow [2024-10-11 20:03:36,814 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 20:03:36,820 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;@1eb4f85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 20:03:36,820 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-11 20:03:36,826 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 20:03:36,826 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 20:03:36,826 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 20:03:36,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:36,826 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:03:36,827 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:36,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:36,836 INFO L85 PathProgramCache]: Analyzing trace with hash 462752, now seen corresponding path program 1 times [2024-10-11 20:03:36,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:36,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404797559] [2024-10-11 20:03:36,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:36,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:36,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:36,851 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:36,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 20:03:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:36,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:03:36,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:36,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:03:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:36,986 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:36,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:36,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404797559] [2024-10-11 20:03:36,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404797559] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:36,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:36,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 20:03:36,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224591139] [2024-10-11 20:03:36,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:36,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:03:37,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:37,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:03:37,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:03:37,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-11 20:03:37,045 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) [2024-10-11 20:03:37,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:37,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-11 20:03:37,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:37,194 INFO L124 PetriNetUnfolderBase]: 110/251 cut-off events. [2024-10-11 20:03:37,195 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-11 20:03:37,196 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. [2024-10-11 20:03:37,200 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 21 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2024-10-11 20:03:37,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 126 flow [2024-10-11 20:03:37,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:03:37,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:03:37,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-10-11 20:03:37,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-10-11 20:03:37,212 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 86 flow. Second operand 3 states and 67 transitions. [2024-10-11 20:03:37,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 126 flow [2024-10-11 20:03:37,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 118 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:03:37,216 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 76 flow [2024-10-11 20:03:37,218 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} [2024-10-11 20:03:37,221 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-10-11 20:03:37,222 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 76 flow [2024-10-11 20:03:37,222 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) [2024-10-11 20:03:37,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:37,222 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:03:37,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-11 20:03:37,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:37,423 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:37,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:37,424 INFO L85 PathProgramCache]: Analyzing trace with hash 462753, now seen corresponding path program 1 times [2024-10-11 20:03:37,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:37,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168520144] [2024-10-11 20:03:37,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:37,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:37,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:37,427 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:37,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 20:03:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:37,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 20:03:37,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:37,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:03:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:37,570 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:37,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:37,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168520144] [2024-10-11 20:03:37,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168520144] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:37,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:37,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:03:37,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754273604] [2024-10-11 20:03:37,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:37,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:03:37,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:37,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:03:37,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:03:37,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-11 20:03:37,603 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) [2024-10-11 20:03:37,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:37,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-11 20:03:37,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:37,734 INFO L124 PetriNetUnfolderBase]: 110/253 cut-off events. [2024-10-11 20:03:37,734 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-11 20:03:37,735 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. [2024-10-11 20:03:37,736 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 24 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-10-11 20:03:37,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 36 transitions, 132 flow [2024-10-11 20:03:37,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:03:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:03:37,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-10-11 20:03:37,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-11 20:03:37,738 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 76 flow. Second operand 3 states and 70 transitions. [2024-10-11 20:03:37,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 36 transitions, 132 flow [2024-10-11 20:03:37,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 128 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:03:37,739 INFO L231 Difference]: Finished difference. Result has 36 places, 35 transitions, 86 flow [2024-10-11 20:03:37,740 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} [2024-10-11 20:03:37,740 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-10-11 20:03:37,740 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 86 flow [2024-10-11 20:03:37,740 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) [2024-10-11 20:03:37,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:37,741 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 20:03:37,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-11 20:03:37,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:37,942 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:37,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:37,942 INFO L85 PathProgramCache]: Analyzing trace with hash 444720560, now seen corresponding path program 1 times [2024-10-11 20:03:37,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:37,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859632131] [2024-10-11 20:03:37,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:37,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:37,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:37,958 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:37,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-11 20:03:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:37,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 20:03:37,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:38,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:03:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:38,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:38,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:38,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859632131] [2024-10-11 20:03:38,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859632131] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:38,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:38,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 20:03:38,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043762283] [2024-10-11 20:03:38,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:38,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:03:38,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:38,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:03:38,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:03:38,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-11 20:03:38,506 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) [2024-10-11 20:03:38,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:38,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-11 20:03:38,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:38,917 INFO L124 PetriNetUnfolderBase]: 113/262 cut-off events. [2024-10-11 20:03:38,918 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-11 20:03:38,919 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. [2024-10-11 20:03:38,920 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 24 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-10-11 20:03:38,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 188 flow [2024-10-11 20:03:38,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 20:03:38,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 20:03:38,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-10-11 20:03:38,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-10-11 20:03:38,923 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 86 flow. Second operand 9 states and 164 transitions. [2024-10-11 20:03:38,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 188 flow [2024-10-11 20:03:38,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 20:03:38,925 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 158 flow [2024-10-11 20:03:38,926 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} [2024-10-11 20:03:38,926 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-10-11 20:03:38,926 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 158 flow [2024-10-11 20:03:38,927 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) [2024-10-11 20:03:38,927 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:38,927 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:38,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-11 20:03:39,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:39,128 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:39,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:39,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1301294496, now seen corresponding path program 1 times [2024-10-11 20:03:39,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:39,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419512787] [2024-10-11 20:03:39,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:39,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:39,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:39,132 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:39,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 20:03:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:39,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 20:03:39,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:39,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 20:03:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:39,278 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:39,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:39,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419512787] [2024-10-11 20:03:39,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419512787] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:39,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:39,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:03:39,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2677216] [2024-10-11 20:03:39,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:39,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:03:39,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:39,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:03:39,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:03:39,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-11 20:03:39,358 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) [2024-10-11 20:03:39,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:39,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-11 20:03:39,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:39,433 INFO L124 PetriNetUnfolderBase]: 113/235 cut-off events. [2024-10-11 20:03:39,433 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-11 20:03:39,434 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. [2024-10-11 20:03:39,435 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 29 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2024-10-11 20:03:39,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 218 flow [2024-10-11 20:03:39,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:03:39,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:03:39,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-10-11 20:03:39,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-10-11 20:03:39,436 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 158 flow. Second operand 4 states and 67 transitions. [2024-10-11 20:03:39,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 218 flow [2024-10-11 20:03:39,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 204 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 20:03:39,438 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 146 flow [2024-10-11 20:03:39,439 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} [2024-10-11 20:03:39,439 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-10-11 20:03:39,439 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 146 flow [2024-10-11 20:03:39,439 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) [2024-10-11 20:03:39,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:39,440 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:39,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-11 20:03:39,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:39,642 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:39,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:39,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1301294495, now seen corresponding path program 1 times [2024-10-11 20:03:39,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:39,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499123291] [2024-10-11 20:03:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:39,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:39,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:39,646 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:39,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 20:03:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:39,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 20:03:39,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:39,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:39,860 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 [2024-10-11 20:03:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:39,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:39,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499123291] [2024-10-11 20:03:39,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499123291] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:39,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:39,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-11 20:03:39,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083321116] [2024-10-11 20:03:39,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:39,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:03:39,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:39,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:03:39,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:03:40,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-11 20:03:40,172 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) [2024-10-11 20:03:40,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:40,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-11 20:03:40,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:40,434 INFO L124 PetriNetUnfolderBase]: 234/436 cut-off events. [2024-10-11 20:03:40,434 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-11 20:03:40,435 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. [2024-10-11 20:03:40,437 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 44 selfloop transitions, 8 changer transitions 0/58 dead transitions. [2024-10-11 20:03:40,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 287 flow [2024-10-11 20:03:40,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:03:40,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:03:40,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-10-11 20:03:40,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5458333333333333 [2024-10-11 20:03:40,439 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 146 flow. Second operand 6 states and 131 transitions. [2024-10-11 20:03:40,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 287 flow [2024-10-11 20:03:40,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:03:40,442 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 167 flow [2024-10-11 20:03:40,442 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} [2024-10-11 20:03:40,442 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2024-10-11 20:03:40,443 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 167 flow [2024-10-11 20:03:40,443 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) [2024-10-11 20:03:40,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:40,443 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:40,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-10-11 20:03:40,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:40,647 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:40,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:40,648 INFO L85 PathProgramCache]: Analyzing trace with hash -731836715, now seen corresponding path program 1 times [2024-10-11 20:03:40,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:40,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346530623] [2024-10-11 20:03:40,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:40,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:40,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:40,651 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:40,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 20:03:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:40,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 20:03:40,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:40,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:40,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:40,870 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 [2024-10-11 20:03:40,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:40,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:40,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346530623] [2024-10-11 20:03:40,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346530623] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:40,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:40,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-11 20:03:40,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869947053] [2024-10-11 20:03:40,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:40,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:03:40,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:40,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:03:40,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:03:41,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-10-11 20:03:41,138 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) [2024-10-11 20:03:41,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:41,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-10-11 20:03:41,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:41,493 INFO L124 PetriNetUnfolderBase]: 419/733 cut-off events. [2024-10-11 20:03:41,493 INFO L125 PetriNetUnfolderBase]: For 97/121 co-relation queries the response was YES. [2024-10-11 20:03:41,498 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. [2024-10-11 20:03:41,500 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 44 selfloop transitions, 9 changer transitions 0/57 dead transitions. [2024-10-11 20:03:41,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 310 flow [2024-10-11 20:03:41,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:03:41,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:03:41,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-10-11 20:03:41,509 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-10-11 20:03:41,509 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 167 flow. Second operand 6 states and 119 transitions. [2024-10-11 20:03:41,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 310 flow [2024-10-11 20:03:41,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 302 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 20:03:41,511 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 196 flow [2024-10-11 20:03:41,511 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} [2024-10-11 20:03:41,512 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2024-10-11 20:03:41,512 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 196 flow [2024-10-11 20:03:41,512 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) [2024-10-11 20:03:41,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:41,515 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:41,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-11 20:03:41,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:41,716 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:41,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:41,716 INFO L85 PathProgramCache]: Analyzing trace with hash -708511515, now seen corresponding path program 1 times [2024-10-11 20:03:41,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:41,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682534082] [2024-10-11 20:03:41,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:41,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:41,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:41,719 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:41,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 20:03:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:41,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 20:03:41,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:41,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:03:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:41,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:42,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:42,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682534082] [2024-10-11 20:03:42,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682534082] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:42,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:42,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2024-10-11 20:03:42,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343446379] [2024-10-11 20:03:42,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:42,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:03:42,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:42,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:03:42,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:03:44,173 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-10-11 20:03:44,176 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) [2024-10-11 20:03:44,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:44,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-10-11 20:03:44,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:45,424 INFO L124 PetriNetUnfolderBase]: 1077/1973 cut-off events. [2024-10-11 20:03:45,425 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2024-10-11 20:03:45,427 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. [2024-10-11 20:03:45,433 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 93 selfloop transitions, 16 changer transitions 0/114 dead transitions. [2024-10-11 20:03:45,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 114 transitions, 612 flow [2024-10-11 20:03:45,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:03:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:03:45,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 227 transitions. [2024-10-11 20:03:45,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675 [2024-10-11 20:03:45,436 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 196 flow. Second operand 10 states and 227 transitions. [2024-10-11 20:03:45,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 114 transitions, 612 flow [2024-10-11 20:03:45,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 114 transitions, 592 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:03:45,441 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 252 flow [2024-10-11 20:03:45,442 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} [2024-10-11 20:03:45,443 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2024-10-11 20:03:45,444 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 252 flow [2024-10-11 20:03:45,444 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) [2024-10-11 20:03:45,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:45,444 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:45,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-11 20:03:45,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:45,645 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:45,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:45,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1212101200, now seen corresponding path program 1 times [2024-10-11 20:03:45,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:45,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186625448] [2024-10-11 20:03:45,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:45,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:45,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:45,649 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:45,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 20:03:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:45,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 20:03:45,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:45,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:03:45,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:45,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:46,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:46,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186625448] [2024-10-11 20:03:46,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186625448] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:46,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:46,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2024-10-11 20:03:46,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978273285] [2024-10-11 20:03:46,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:46,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:03:46,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:46,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:03:46,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:03:47,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-10-11 20:03:47,070 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) [2024-10-11 20:03:47,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:47,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-10-11 20:03:47,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:48,340 INFO L124 PetriNetUnfolderBase]: 1105/1917 cut-off events. [2024-10-11 20:03:48,340 INFO L125 PetriNetUnfolderBase]: For 970/994 co-relation queries the response was YES. [2024-10-11 20:03:48,343 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. [2024-10-11 20:03:48,349 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 79 selfloop transitions, 20 changer transitions 0/102 dead transitions. [2024-10-11 20:03:48,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 102 transitions, 606 flow [2024-10-11 20:03:48,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:03:48,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:03:48,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-10-11 20:03:48,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5075 [2024-10-11 20:03:48,354 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 252 flow. Second operand 10 states and 203 transitions. [2024-10-11 20:03:48,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 102 transitions, 606 flow [2024-10-11 20:03:48,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 102 transitions, 598 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 20:03:48,360 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 344 flow [2024-10-11 20:03:48,360 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} [2024-10-11 20:03:48,361 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2024-10-11 20:03:48,363 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 344 flow [2024-10-11 20:03:48,364 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) [2024-10-11 20:03:48,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:48,364 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 20:03:48,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-11 20:03:48,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:48,565 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:48,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash -40732323, now seen corresponding path program 2 times [2024-10-11 20:03:48,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:48,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348415002] [2024-10-11 20:03:48,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:03:48,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:48,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:48,567 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:48,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-11 20:03:48,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:03:48,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:03:48,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 20:03:48,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:48,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:03:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:48,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:03:49,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:49,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348415002] [2024-10-11 20:03:49,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348415002] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:49,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:49,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 20:03:49,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926816872] [2024-10-11 20:03:49,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:49,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 20:03:49,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:49,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 20:03:49,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 20:03:49,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-11 20:03:49,681 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) [2024-10-11 20:03:49,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:49,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-11 20:03:49,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:51,263 INFO L124 PetriNetUnfolderBase]: 1046/1860 cut-off events. [2024-10-11 20:03:51,263 INFO L125 PetriNetUnfolderBase]: For 1200/1214 co-relation queries the response was YES. [2024-10-11 20:03:51,266 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. [2024-10-11 20:03:51,270 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 43 selfloop transitions, 29 changer transitions 0/78 dead transitions. [2024-10-11 20:03:51,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 78 transitions, 668 flow [2024-10-11 20:03:51,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 20:03:51,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 20:03:51,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 353 transitions. [2024-10-11 20:03:51,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42023809523809524 [2024-10-11 20:03:51,273 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 344 flow. Second operand 21 states and 353 transitions. [2024-10-11 20:03:51,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 78 transitions, 668 flow [2024-10-11 20:03:51,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 643 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:03:51,280 INFO L231 Difference]: Finished difference. Result has 88 places, 78 transitions, 587 flow [2024-10-11 20:03:51,281 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} [2024-10-11 20:03:51,282 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2024-10-11 20:03:51,282 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 78 transitions, 587 flow [2024-10-11 20:03:51,283 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) [2024-10-11 20:03:51,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:51,283 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:51,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-11 20:03:51,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:51,484 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:51,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:51,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1548659032, now seen corresponding path program 2 times [2024-10-11 20:03:51,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:51,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533595305] [2024-10-11 20:03:51,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:03:51,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:51,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:51,488 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:51,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-11 20:03:51,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:03:51,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:03:51,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 20:03:51,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:51,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:03:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 20:03:51,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:52,183 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 20:03:52,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:52,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533595305] [2024-10-11 20:03:52,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533595305] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:52,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:52,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-11 20:03:52,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375140895] [2024-10-11 20:03:52,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:52,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:03:52,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:52,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:03:52,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:03:52,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-11 20:03:52,875 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) [2024-10-11 20:03:52,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:52,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-11 20:03:52,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:53,294 INFO L124 PetriNetUnfolderBase]: 1034/1824 cut-off events. [2024-10-11 20:03:53,294 INFO L125 PetriNetUnfolderBase]: For 1012/1012 co-relation queries the response was YES. [2024-10-11 20:03:53,297 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. [2024-10-11 20:03:53,301 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 74 selfloop transitions, 20 changer transitions 0/100 dead transitions. [2024-10-11 20:03:53,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 100 transitions, 870 flow [2024-10-11 20:03:53,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:03:53,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:03:53,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-10-11 20:03:53,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-10-11 20:03:53,304 INFO L175 Difference]: Start difference. First operand has 88 places, 78 transitions, 587 flow. Second operand 5 states and 105 transitions. [2024-10-11 20:03:53,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 100 transitions, 870 flow [2024-10-11 20:03:53,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 100 transitions, 776 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-10-11 20:03:53,310 INFO L231 Difference]: Finished difference. Result has 81 places, 77 transitions, 525 flow [2024-10-11 20:03:53,310 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} [2024-10-11 20:03:53,312 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 41 predicate places. [2024-10-11 20:03:53,312 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 77 transitions, 525 flow [2024-10-11 20:03:53,312 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) [2024-10-11 20:03:53,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:53,313 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:53,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-11 20:03:53,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:53,513 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:53,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:53,514 INFO L85 PathProgramCache]: Analyzing trace with hash 40709021, now seen corresponding path program 2 times [2024-10-11 20:03:53,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:53,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470034076] [2024-10-11 20:03:53,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:03:53,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:53,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:53,517 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:53,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-11 20:03:53,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:03:53,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:03:53,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 20:03:53,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:53,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 20:03:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 20:03:53,687 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:53,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:53,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470034076] [2024-10-11 20:03:53,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470034076] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:53,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:53,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 20:03:53,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707256257] [2024-10-11 20:03:53,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:53,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:03:53,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:53,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:03:53,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 20:03:53,769 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-10-11 20:03:53,770 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) [2024-10-11 20:03:53,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:53,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-10-11 20:03:53,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:54,011 INFO L124 PetriNetUnfolderBase]: 1042/1798 cut-off events. [2024-10-11 20:03:54,012 INFO L125 PetriNetUnfolderBase]: For 1638/1638 co-relation queries the response was YES. [2024-10-11 20:03:54,014 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. [2024-10-11 20:03:54,019 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 58 selfloop transitions, 26 changer transitions 0/87 dead transitions. [2024-10-11 20:03:54,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 87 transitions, 746 flow [2024-10-11 20:03:54,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:03:54,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:03:54,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-10-11 20:03:54,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-10-11 20:03:54,021 INFO L175 Difference]: Start difference. First operand has 81 places, 77 transitions, 525 flow. Second operand 5 states and 92 transitions. [2024-10-11 20:03:54,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 87 transitions, 746 flow [2024-10-11 20:03:54,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 87 transitions, 678 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 20:03:54,024 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 505 flow [2024-10-11 20:03:54,024 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} [2024-10-11 20:03:54,025 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2024-10-11 20:03:54,025 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 505 flow [2024-10-11 20:03:54,025 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) [2024-10-11 20:03:54,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:54,025 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:54,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-11 20:03:54,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:54,226 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:54,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:54,227 INFO L85 PathProgramCache]: Analyzing trace with hash 892773046, now seen corresponding path program 1 times [2024-10-11 20:03:54,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:54,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930407710] [2024-10-11 20:03:54,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:54,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:54,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:54,228 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:54,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-11 20:03:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:54,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:03:54,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:54,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:54,314 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:54,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:54,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930407710] [2024-10-11 20:03:54,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930407710] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:54,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:54,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:03:54,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987122732] [2024-10-11 20:03:54,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:54,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:03:54,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:54,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:03:54,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:03:54,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-11 20:03:54,335 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) [2024-10-11 20:03:54,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:54,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-11 20:03:54,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:54,489 INFO L124 PetriNetUnfolderBase]: 1031/1773 cut-off events. [2024-10-11 20:03:54,489 INFO L125 PetriNetUnfolderBase]: For 1184/1184 co-relation queries the response was YES. [2024-10-11 20:03:54,491 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. [2024-10-11 20:03:54,496 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 88 selfloop transitions, 8 changer transitions 1/100 dead transitions. [2024-10-11 20:03:54,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 100 transitions, 816 flow [2024-10-11 20:03:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:03:54,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:03:54,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-10-11 20:03:54,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-10-11 20:03:54,497 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 505 flow. Second operand 3 states and 85 transitions. [2024-10-11 20:03:54,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 100 transitions, 816 flow [2024-10-11 20:03:54,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 100 transitions, 746 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:03:54,500 INFO L231 Difference]: Finished difference. Result has 75 places, 81 transitions, 533 flow [2024-10-11 20:03:54,500 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} [2024-10-11 20:03:54,501 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 35 predicate places. [2024-10-11 20:03:54,501 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 81 transitions, 533 flow [2024-10-11 20:03:54,501 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) [2024-10-11 20:03:54,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:54,501 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:54,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-11 20:03:54,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:54,701 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:54,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:54,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1277123276, now seen corresponding path program 1 times [2024-10-11 20:03:54,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:54,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101519977] [2024-10-11 20:03:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:54,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:54,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:54,703 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:54,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-11 20:03:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:54,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:03:54,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:54,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:54,773 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:54,773 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:54,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101519977] [2024-10-11 20:03:54,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101519977] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:54,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:54,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 20:03:54,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293388721] [2024-10-11 20:03:54,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:54,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:03:54,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:54,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:03:54,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:03:54,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-11 20:03:54,776 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) [2024-10-11 20:03:54,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:54,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-11 20:03:54,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:54,976 INFO L124 PetriNetUnfolderBase]: 1006/1740 cut-off events. [2024-10-11 20:03:54,977 INFO L125 PetriNetUnfolderBase]: For 944/944 co-relation queries the response was YES. [2024-10-11 20:03:54,978 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. [2024-10-11 20:03:54,983 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 120 selfloop transitions, 8 changer transitions 0/131 dead transitions. [2024-10-11 20:03:54,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 131 transitions, 1011 flow [2024-10-11 20:03:54,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:03:54,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:03:54,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-10-11 20:03:54,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.69375 [2024-10-11 20:03:54,984 INFO L175 Difference]: Start difference. First operand has 75 places, 81 transitions, 533 flow. Second operand 4 states and 111 transitions. [2024-10-11 20:03:54,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 131 transitions, 1011 flow [2024-10-11 20:03:54,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 131 transitions, 995 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 20:03:54,987 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 560 flow [2024-10-11 20:03:54,987 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} [2024-10-11 20:03:54,988 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 39 predicate places. [2024-10-11 20:03:54,988 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 560 flow [2024-10-11 20:03:54,988 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) [2024-10-11 20:03:54,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:54,988 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:54,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-11 20:03:55,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:55,189 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:55,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:55,189 INFO L85 PathProgramCache]: Analyzing trace with hash -437753348, now seen corresponding path program 2 times [2024-10-11 20:03:55,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:55,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564706257] [2024-10-11 20:03:55,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:03:55,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:55,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:55,192 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:55,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-11 20:03:55,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:03:55,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:03:55,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:03:55,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:55,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:55,251 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:55,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:55,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564706257] [2024-10-11 20:03:55,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564706257] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:55,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:55,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 20:03:55,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118953477] [2024-10-11 20:03:55,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:55,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:03:55,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:55,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:03:55,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:03:55,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-11 20:03:55,255 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) [2024-10-11 20:03:55,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:55,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-11 20:03:55,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:55,475 INFO L124 PetriNetUnfolderBase]: 1096/1935 cut-off events. [2024-10-11 20:03:55,475 INFO L125 PetriNetUnfolderBase]: For 1947/1947 co-relation queries the response was YES. [2024-10-11 20:03:55,478 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. [2024-10-11 20:03:55,484 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 108 selfloop transitions, 13 changer transitions 0/124 dead transitions. [2024-10-11 20:03:55,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 124 transitions, 1024 flow [2024-10-11 20:03:55,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:03:55,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:03:55,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-10-11 20:03:55,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-10-11 20:03:55,493 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 560 flow. Second operand 4 states and 105 transitions. [2024-10-11 20:03:55,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 124 transitions, 1024 flow [2024-10-11 20:03:55,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 124 transitions, 988 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:03:55,498 INFO L231 Difference]: Finished difference. Result has 83 places, 95 transitions, 705 flow [2024-10-11 20:03:55,502 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} [2024-10-11 20:03:55,502 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 43 predicate places. [2024-10-11 20:03:55,503 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 95 transitions, 705 flow [2024-10-11 20:03:55,503 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) [2024-10-11 20:03:55,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:55,503 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:55,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2024-10-11 20:03:55,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:55,704 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:55,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:55,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1698897302, now seen corresponding path program 3 times [2024-10-11 20:03:55,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:55,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042449414] [2024-10-11 20:03:55,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:03:55,705 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 [2024-10-11 20:03:55,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:55,707 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:55,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-11 20:03:55,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-11 20:03:55,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:03:55,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:03:55,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:55,773 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:55,773 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:55,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042449414] [2024-10-11 20:03:55,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042449414] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:55,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:55,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 20:03:55,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381816216] [2024-10-11 20:03:55,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:55,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:03:55,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:55,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:03:55,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:03:55,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-11 20:03:55,777 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) [2024-10-11 20:03:55,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:55,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-11 20:03:55,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:56,001 INFO L124 PetriNetUnfolderBase]: 1057/1830 cut-off events. [2024-10-11 20:03:56,001 INFO L125 PetriNetUnfolderBase]: For 2446/2446 co-relation queries the response was YES. [2024-10-11 20:03:56,003 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. [2024-10-11 20:03:56,010 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 124 selfloop transitions, 23 changer transitions 0/150 dead transitions. [2024-10-11 20:03:56,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 150 transitions, 1277 flow [2024-10-11 20:03:56,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:03:56,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:03:56,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-10-11 20:03:56,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.70625 [2024-10-11 20:03:56,012 INFO L175 Difference]: Start difference. First operand has 83 places, 95 transitions, 705 flow. Second operand 4 states and 113 transitions. [2024-10-11 20:03:56,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 150 transitions, 1277 flow [2024-10-11 20:03:56,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 150 transitions, 1265 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-11 20:03:56,019 INFO L231 Difference]: Finished difference. Result has 88 places, 101 transitions, 839 flow [2024-10-11 20:03:56,019 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} [2024-10-11 20:03:56,019 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2024-10-11 20:03:56,019 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 101 transitions, 839 flow [2024-10-11 20:03:56,019 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) [2024-10-11 20:03:56,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:56,020 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] [2024-10-11 20:03:56,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-11 20:03:56,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:56,224 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:56,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:56,225 INFO L85 PathProgramCache]: Analyzing trace with hash 72773020, now seen corresponding path program 1 times [2024-10-11 20:03:56,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:56,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096954638] [2024-10-11 20:03:56,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:56,225 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:56,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:56,228 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:56,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-11 20:03:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:56,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:03:56,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:56,311 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:56,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:56,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096954638] [2024-10-11 20:03:56,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096954638] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:56,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:56,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 20:03:56,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598193106] [2024-10-11 20:03:56,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:56,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:03:56,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:56,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:03:56,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:03:56,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-11 20:03:56,315 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) [2024-10-11 20:03:56,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:56,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-11 20:03:56,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:56,558 INFO L124 PetriNetUnfolderBase]: 1340/2272 cut-off events. [2024-10-11 20:03:56,558 INFO L125 PetriNetUnfolderBase]: For 5707/5707 co-relation queries the response was YES. [2024-10-11 20:03:56,561 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. [2024-10-11 20:03:56,565 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 126 selfloop transitions, 18 changer transitions 0/146 dead transitions. [2024-10-11 20:03:56,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 146 transitions, 1371 flow [2024-10-11 20:03:56,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:03:56,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:03:56,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-10-11 20:03:56,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-10-11 20:03:56,566 INFO L175 Difference]: Start difference. First operand has 88 places, 101 transitions, 839 flow. Second operand 4 states and 108 transitions. [2024-10-11 20:03:56,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 146 transitions, 1371 flow [2024-10-11 20:03:56,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 146 transitions, 1348 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-11 20:03:56,574 INFO L231 Difference]: Finished difference. Result has 92 places, 110 transitions, 964 flow [2024-10-11 20:03:56,574 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} [2024-10-11 20:03:56,575 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 52 predicate places. [2024-10-11 20:03:56,575 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 110 transitions, 964 flow [2024-10-11 20:03:56,575 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) [2024-10-11 20:03:56,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:56,575 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] [2024-10-11 20:03:56,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-10-11 20:03:56,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:56,778 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:56,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:56,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1502726180, now seen corresponding path program 2 times [2024-10-11 20:03:56,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:56,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69887697] [2024-10-11 20:03:56,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:03:56,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:56,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:56,780 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:56,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-10-11 20:03:56,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:03:56,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:03:56,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:03:56,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 20:03:56,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:03:56,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:56,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69887697] [2024-10-11 20:03:56,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69887697] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:03:56,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:03:56,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 20:03:56,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091443380] [2024-10-11 20:03:56,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:03:56,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:03:56,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:56,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:03:56,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:03:56,843 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-11 20:03:56,843 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) [2024-10-11 20:03:56,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:03:56,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-11 20:03:56,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:03:57,082 INFO L124 PetriNetUnfolderBase]: 1202/2026 cut-off events. [2024-10-11 20:03:57,082 INFO L125 PetriNetUnfolderBase]: For 6736/6736 co-relation queries the response was YES. [2024-10-11 20:03:57,086 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. [2024-10-11 20:03:57,091 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 139 selfloop transitions, 19 changer transitions 1/161 dead transitions. [2024-10-11 20:03:57,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 161 transitions, 1750 flow [2024-10-11 20:03:57,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:03:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:03:57,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-10-11 20:03:57,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-10-11 20:03:57,095 INFO L175 Difference]: Start difference. First operand has 92 places, 110 transitions, 964 flow. Second operand 4 states and 98 transitions. [2024-10-11 20:03:57,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 161 transitions, 1750 flow [2024-10-11 20:03:57,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 161 transitions, 1727 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 20:03:57,104 INFO L231 Difference]: Finished difference. Result has 96 places, 111 transitions, 1017 flow [2024-10-11 20:03:57,104 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} [2024-10-11 20:03:57,105 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 56 predicate places. [2024-10-11 20:03:57,105 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 111 transitions, 1017 flow [2024-10-11 20:03:57,105 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) [2024-10-11 20:03:57,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:03:57,105 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:03:57,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-10-11 20:03:57,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:57,308 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:03:57,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:03:57,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1935282272, now seen corresponding path program 1 times [2024-10-11 20:03:57,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:03:57,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432246623] [2024-10-11 20:03:57,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:03:57,309 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:03:57,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:03:57,311 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:03:57,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-10-11 20:03:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:03:57,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 20:03:57,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:03:57,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 20:03:57,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 19 [2024-10-11 20:03:57,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:57,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:03:58,765 INFO L349 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2024-10-11 20:03:58,765 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 [2024-10-11 20:03:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:03:58,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:03:58,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432246623] [2024-10-11 20:03:58,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432246623] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:03:58,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:03:58,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-10-11 20:03:58,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259883933] [2024-10-11 20:03:58,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:03:58,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:03:58,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:03:58,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:03:58,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=35, Unknown=1, NotChecked=0, Total=56 [2024-10-11 20:04:00,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 20:04:01,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 20:04:02,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 20:04:03,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 20:04:04,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 20:04:05,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 20:04:07,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 20:04:08,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 20:04:08,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-11 20:04:08,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 111 transitions, 1017 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:08,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:08,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-11 20:04:08,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:12,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 20:04:16,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:04:20,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:04:20,831 INFO L124 PetriNetUnfolderBase]: 1572/2699 cut-off events. [2024-10-11 20:04:20,831 INFO L125 PetriNetUnfolderBase]: For 9153/9153 co-relation queries the response was YES. [2024-10-11 20:04:20,836 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. [2024-10-11 20:04:20,842 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 153 selfloop transitions, 32 changer transitions 3/191 dead transitions. [2024-10-11 20:04:20,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 191 transitions, 1979 flow [2024-10-11 20:04:20,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 20:04:20,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 20:04:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-10-11 20:04:20,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-11 20:04:20,844 INFO L175 Difference]: Start difference. First operand has 96 places, 111 transitions, 1017 flow. Second operand 6 states and 108 transitions. [2024-10-11 20:04:20,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 191 transitions, 1979 flow [2024-10-11 20:04:20,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 191 transitions, 1917 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:04:20,856 INFO L231 Difference]: Finished difference. Result has 101 places, 128 transitions, 1233 flow [2024-10-11 20:04:20,856 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} [2024-10-11 20:04:20,857 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 61 predicate places. [2024-10-11 20:04:20,857 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 128 transitions, 1233 flow [2024-10-11 20:04:20,857 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) [2024-10-11 20:04:20,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:20,857 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:20,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2024-10-11 20:04:21,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:21,058 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:04:21,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:21,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1171922934, now seen corresponding path program 2 times [2024-10-11 20:04:21,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:21,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793147185] [2024-10-11 20:04:21,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:21,059 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:21,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:21,060 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:21,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-10-11 20:04:21,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:04:21,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:21,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 20:04:21,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:21,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 20:04:21,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 19 [2024-10-11 20:04:21,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:21,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:22,642 INFO L349 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2024-10-11 20:04:22,642 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 [2024-10-11 20:04:22,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:22,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:22,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793147185] [2024-10-11 20:04:22,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793147185] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 20:04:22,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 20:04:22,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-10-11 20:04:22,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461070067] [2024-10-11 20:04:22,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:04:22,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 20:04:22,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:22,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 20:04:22,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=35, Unknown=1, NotChecked=0, Total=56 [2024-10-11 20:04:22,758 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-10-11 20:04:22,758 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) [2024-10-11 20:04:22,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:22,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-10-11 20:04:22,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:26,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:04:27,091 INFO L124 PetriNetUnfolderBase]: 1660/2892 cut-off events. [2024-10-11 20:04:27,091 INFO L125 PetriNetUnfolderBase]: For 10480/10480 co-relation queries the response was YES. [2024-10-11 20:04:27,096 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. [2024-10-11 20:04:27,102 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 150 selfloop transitions, 24 changer transitions 2/179 dead transitions. [2024-10-11 20:04:27,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 179 transitions, 2032 flow [2024-10-11 20:04:27,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:04:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:04:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-10-11 20:04:27,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-10-11 20:04:27,104 INFO L175 Difference]: Start difference. First operand has 101 places, 128 transitions, 1233 flow. Second operand 4 states and 105 transitions. [2024-10-11 20:04:27,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 179 transitions, 2032 flow [2024-10-11 20:04:27,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 179 transitions, 1983 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-10-11 20:04:27,114 INFO L231 Difference]: Finished difference. Result has 105 places, 137 transitions, 1396 flow [2024-10-11 20:04:27,115 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} [2024-10-11 20:04:27,115 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 65 predicate places. [2024-10-11 20:04:27,116 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 137 transitions, 1396 flow [2024-10-11 20:04:27,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:04:27,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:27,116 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:27,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2024-10-11 20:04:27,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:27,317 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:04:27,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:27,317 INFO L85 PathProgramCache]: Analyzing trace with hash 2120883119, now seen corresponding path program 1 times [2024-10-11 20:04:27,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:27,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378533155] [2024-10-11 20:04:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:04:27,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:27,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:27,320 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:27,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-10-11 20:04:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:04:27,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 20:04:27,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:27,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:27,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:27,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378533155] [2024-10-11 20:04:27,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378533155] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:27,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:27,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2024-10-11 20:04:27,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195004931] [2024-10-11 20:04:27,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:27,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 20:04:27,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:27,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 20:04:27,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-11 20:04:27,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-11 20:04:27,511 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) [2024-10-11 20:04:27,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:27,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-11 20:04:27,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:28,189 INFO L124 PetriNetUnfolderBase]: 1769/3127 cut-off events. [2024-10-11 20:04:28,190 INFO L125 PetriNetUnfolderBase]: For 9760/9760 co-relation queries the response was YES. [2024-10-11 20:04:28,196 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. [2024-10-11 20:04:28,202 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 182 selfloop transitions, 63 changer transitions 1/248 dead transitions. [2024-10-11 20:04:28,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 248 transitions, 2550 flow [2024-10-11 20:04:28,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 20:04:28,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 20:04:28,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 274 transitions. [2024-10-11 20:04:28,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5269230769230769 [2024-10-11 20:04:28,205 INFO L175 Difference]: Start difference. First operand has 105 places, 137 transitions, 1396 flow. Second operand 13 states and 274 transitions. [2024-10-11 20:04:28,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 248 transitions, 2550 flow [2024-10-11 20:04:28,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 248 transitions, 2520 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 20:04:28,219 INFO L231 Difference]: Finished difference. Result has 125 places, 172 transitions, 1889 flow [2024-10-11 20:04:28,219 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} [2024-10-11 20:04:28,220 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 85 predicate places. [2024-10-11 20:04:28,220 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 172 transitions, 1889 flow [2024-10-11 20:04:28,220 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) [2024-10-11 20:04:28,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:28,220 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:28,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2024-10-11 20:04:28,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:28,421 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:04:28,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:28,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1568134109, now seen corresponding path program 2 times [2024-10-11 20:04:28,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:28,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456947319] [2024-10-11 20:04:28,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:04:28,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:28,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:28,424 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:28,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-10-11 20:04:28,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:04:28,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:28,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 20:04:28,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:28,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:28,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:28,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:28,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456947319] [2024-10-11 20:04:28,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456947319] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:28,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:28,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2024-10-11 20:04:28,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022667169] [2024-10-11 20:04:28,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:28,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 20:04:28,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:28,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 20:04:28,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-10-11 20:04:28,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-11 20:04:28,621 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) [2024-10-11 20:04:28,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:28,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-11 20:04:28,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:30,100 INFO L124 PetriNetUnfolderBase]: 3419/6091 cut-off events. [2024-10-11 20:04:30,100 INFO L125 PetriNetUnfolderBase]: For 31929/31929 co-relation queries the response was YES. [2024-10-11 20:04:30,116 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. [2024-10-11 20:04:30,130 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 340 selfloop transitions, 399 changer transitions 1/742 dead transitions. [2024-10-11 20:04:30,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 742 transitions, 8961 flow [2024-10-11 20:04:30,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-11 20:04:30,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-10-11 20:04:30,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 708 transitions. [2024-10-11 20:04:30,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5363636363636364 [2024-10-11 20:04:30,132 INFO L175 Difference]: Start difference. First operand has 125 places, 172 transitions, 1889 flow. Second operand 33 states and 708 transitions. [2024-10-11 20:04:30,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 742 transitions, 8961 flow [2024-10-11 20:04:30,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 742 transitions, 8786 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-10-11 20:04:30,187 INFO L231 Difference]: Finished difference. Result has 172 places, 516 transitions, 7135 flow [2024-10-11 20:04:30,188 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} [2024-10-11 20:04:30,188 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 132 predicate places. [2024-10-11 20:04:30,188 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 516 transitions, 7135 flow [2024-10-11 20:04:30,188 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) [2024-10-11 20:04:30,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:30,188 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:30,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2024-10-11 20:04:30,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:30,391 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:04:30,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:30,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1444729847, now seen corresponding path program 3 times [2024-10-11 20:04:30,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:30,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292740362] [2024-10-11 20:04:30,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:04:30,392 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:30,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:30,395 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:30,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2024-10-11 20:04:30,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 20:04:30,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:30,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 20:04:30,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:30,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:30,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:04:30,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:04:30,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292740362] [2024-10-11 20:04:30,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292740362] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:04:30,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:04:30,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2024-10-11 20:04:30,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115667455] [2024-10-11 20:04:30,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:04:30,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 20:04:30,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:04:30,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 20:04:30,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-11 20:04:30,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-10-11 20:04:30,857 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) [2024-10-11 20:04:30,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:04:30,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-10-11 20:04:30,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:04:33,479 INFO L124 PetriNetUnfolderBase]: 4442/7921 cut-off events. [2024-10-11 20:04:33,479 INFO L125 PetriNetUnfolderBase]: For 65507/65507 co-relation queries the response was YES. [2024-10-11 20:04:33,546 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. [2024-10-11 20:04:33,575 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 507 selfloop transitions, 554 changer transitions 4/1067 dead transitions. [2024-10-11 20:04:33,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 1067 transitions, 16224 flow [2024-10-11 20:04:33,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 20:04:33,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-11 20:04:33,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 588 transitions. [2024-10-11 20:04:33,578 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-10-11 20:04:33,578 INFO L175 Difference]: Start difference. First operand has 172 places, 516 transitions, 7135 flow. Second operand 28 states and 588 transitions. [2024-10-11 20:04:33,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 1067 transitions, 16224 flow [2024-10-11 20:04:33,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 1067 transitions, 13965 flow, removed 931 selfloop flow, removed 5 redundant places. [2024-10-11 20:04:33,893 INFO L231 Difference]: Finished difference. Result has 208 places, 848 transitions, 12262 flow [2024-10-11 20:04:33,893 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} [2024-10-11 20:04:33,894 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 168 predicate places. [2024-10-11 20:04:33,894 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 848 transitions, 12262 flow [2024-10-11 20:04:33,894 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) [2024-10-11 20:04:33,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:04:33,894 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:04:33,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2024-10-11 20:04:34,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:34,095 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-11 20:04:34,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:04:34,096 INFO L85 PathProgramCache]: Analyzing trace with hash 763666211, now seen corresponding path program 4 times [2024-10-11 20:04:34,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:04:34,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909789793] [2024-10-11 20:04:34,096 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 20:04:34,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:04:34,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:04:34,099 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 20:04:34,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-10-11 20:04:34,177 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 20:04:34,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:04:34,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 20:04:34,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:04:34,265 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 [2024-10-11 20:04:34,588 INFO L349 Elim1Store]: treesize reduction 164, result has 7.3 percent of original size [2024-10-11 20:04:34,588 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 [2024-10-11 20:04:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 20:04:34,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:04:39,037 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