./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/chl-node-subst.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/chl-node-subst.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 3b43103ca9a91605874c4d895f03c4116805b9b245b91cffe9bd63255503e5a0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:52:12,177 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:52:12,245 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:52:12,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:52:12,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:52:12,273 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:52:12,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:52:12,274 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:52:12,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:52:12,276 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:52:12,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:52:12,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:52:12,278 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:52:12,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:52:12,280 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:52:12,280 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:52:12,280 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:52:12,281 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:52:12,281 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:52:12,281 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:52:12,281 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:52:12,282 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:52:12,285 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:52:12,286 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:52:12,286 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:52:12,286 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:52:12,286 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:52:12,287 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:52:12,287 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:52:12,287 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:52:12,287 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:52:12,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:52:12,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:52:12,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:52:12,288 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:52:12,288 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:52:12,289 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:52:12,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:52:12,289 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:52:12,289 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:52:12,289 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:52:12,291 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:52:12,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b43103ca9a91605874c4d895f03c4116805b9b245b91cffe9bd63255503e5a0 [2024-10-11 19:52:12,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:52:12,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:52:12,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:52:12,644 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:52:12,644 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:52:12,645 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2024-10-11 19:52:14,006 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:52:14,237 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:52:14,238 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2024-10-11 19:52:14,246 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/cee36e87d/17dd959cd2a246268bcef58f8b27aa8e/FLAG1264b2277 [2024-10-11 19:52:14,261 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/cee36e87d/17dd959cd2a246268bcef58f8b27aa8e [2024-10-11 19:52:14,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:52:14,264 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:52:14,265 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:52:14,266 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:52:14,270 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:52:14,271 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:52:14" (1/1) ... [2024-10-11 19:52:14,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fb08312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:14, skipping insertion in model container [2024-10-11 19:52:14,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:52:14" (1/1) ... [2024-10-11 19:52:14,295 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:52:14,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:52:14,573 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 19:52:14,573 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ee7cd3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:14, skipping insertion in model container [2024-10-11 19:52:14,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:52:14,574 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:52:14,576 INFO L158 Benchmark]: Toolchain (without parser) took 310.44ms. Allocated memory is still 182.5MB. Free memory was 152.1MB in the beginning and 139.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 19:52:14,576 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory was 75.6MB in the beginning and 75.5MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:52:14,577 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.57ms. Allocated memory is still 182.5MB. Free memory was 152.1MB in the beginning and 139.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 19:52:14,578 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory was 75.6MB in the beginning and 75.5MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 308.57ms. Allocated memory is still 182.5MB. Free memory was 152.1MB in the beginning and 139.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 118]: 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/chl-node-subst.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 3b43103ca9a91605874c4d895f03c4116805b9b245b91cffe9bd63255503e5a0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:52:16,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:52:16,640 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:52:16,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:52:16,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:52:16,669 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:52:16,670 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:52:16,670 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:52:16,671 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:52:16,671 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:52:16,671 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:52:16,672 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:52:16,672 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:52:16,673 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:52:16,673 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:52:16,673 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:52:16,674 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:52:16,674 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:52:16,675 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:52:16,675 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:52:16,675 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:52:16,678 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:52:16,679 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:52:16,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:52:16,680 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:52:16,680 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:52:16,681 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:52:16,681 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:52:16,681 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:52:16,682 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:52:16,682 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:52:16,682 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:52:16,682 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:52:16,683 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:52:16,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:52:16,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:52:16,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:52:16,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:52:16,686 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:52:16,686 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:52:16,686 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:52:16,687 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:52:16,687 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:52:16,687 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:52:16,687 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:52:16,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b43103ca9a91605874c4d895f03c4116805b9b245b91cffe9bd63255503e5a0 [2024-10-11 19:52:17,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:52:17,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:52:17,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:52:17,057 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:52:17,058 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:52:17,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2024-10-11 19:52:18,609 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:52:18,812 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:52:18,813 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2024-10-11 19:52:18,823 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/08cfe2189/41a9e0a60b374000a8fabc9e0a7934e3/FLAG3409ee768 [2024-10-11 19:52:18,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/08cfe2189/41a9e0a60b374000a8fabc9e0a7934e3 [2024-10-11 19:52:18,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:52:18,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:52:18,840 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:52:18,840 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:52:18,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:52:18,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:52:18" (1/1) ... [2024-10-11 19:52:18,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b17cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:18, skipping insertion in model container [2024-10-11 19:52:18,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:52:18" (1/1) ... [2024-10-11 19:52:18,870 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:52:19,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:52:19,132 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:52:19,139 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:52:19,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:52:19,182 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:52:19,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:52:19,229 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:52:19,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:19 WrapperNode [2024-10-11 19:52:19,230 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:52:19,231 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:52:19,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:52:19,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:52:19,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:19" (1/1) ... [2024-10-11 19:52:19,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:19" (1/1) ... [2024-10-11 19:52:19,298 INFO L138 Inliner]: procedures = 28, calls = 52, calls flagged for inlining = 23, calls inlined = 35, statements flattened = 408 [2024-10-11 19:52:19,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:52:19,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:52:19,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:52:19,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:52:19,318 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:19" (1/1) ... [2024-10-11 19:52:19,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:19" (1/1) ... [2024-10-11 19:52:19,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:19" (1/1) ... [2024-10-11 19:52:19,364 INFO L175 MemorySlicer]: Split 26 memory accesses to 3 slices as follows [2, 9, 15]. 58 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 6 writes are split as follows [0, 3, 3]. [2024-10-11 19:52:19,366 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:19" (1/1) ... [2024-10-11 19:52:19,366 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:19" (1/1) ... [2024-10-11 19:52:19,387 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:19" (1/1) ... [2024-10-11 19:52:19,394 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:19" (1/1) ... [2024-10-11 19:52:19,396 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:19" (1/1) ... [2024-10-11 19:52:19,399 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:19" (1/1) ... [2024-10-11 19:52:19,405 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:52:19,406 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:52:19,410 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:52:19,410 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:52:19,411 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:19" (1/1) ... [2024-10-11 19:52:19,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:52:19,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:52:19,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:52:19,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:52:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:52:19,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-10-11 19:52:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-10-11 19:52:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-10-11 19:52:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:52:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:52:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-10-11 19:52:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:52:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:52:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-10-11 19:52:19,490 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:52:19,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:52:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:52:19,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:52:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 19:52:19,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 19:52:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:52:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:52:19,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:52:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-10-11 19:52:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-10-11 19:52:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-10-11 19:52:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:52:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:52:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-10-11 19:52:19,494 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:52:19,644 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:52:19,646 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:52:20,594 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:52:20,595 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:52:21,070 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:52:21,071 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-11 19:52:21,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:52:21 BoogieIcfgContainer [2024-10-11 19:52:21,071 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:52:21,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:52:21,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:52:21,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:52:21,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:52:18" (1/3) ... [2024-10-11 19:52:21,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44da98f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:52:21, skipping insertion in model container [2024-10-11 19:52:21,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:52:19" (2/3) ... [2024-10-11 19:52:21,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44da98f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:52:21, skipping insertion in model container [2024-10-11 19:52:21,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:52:21" (3/3) ... [2024-10-11 19:52:21,081 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2024-10-11 19:52:21,099 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:52:21,100 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-10-11 19:52:21,100 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:52:21,203 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 19:52:21,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 120 transitions, 261 flow [2024-10-11 19:52:21,293 INFO L124 PetriNetUnfolderBase]: 12/117 cut-off events. [2024-10-11 19:52:21,295 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 19:52:21,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 117 events. 12/117 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 407 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2024-10-11 19:52:21,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 120 transitions, 261 flow [2024-10-11 19:52:21,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 116 transitions, 250 flow [2024-10-11 19:52:21,321 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:52:21,329 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;@6754c6cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:52:21,329 INFO L334 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2024-10-11 19:52:21,334 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:52:21,335 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:52:21,335 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:52:21,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:21,336 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:52:21,336 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 19:52:21,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:21,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1292102, now seen corresponding path program 1 times [2024-10-11 19:52:21,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:21,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542543436] [2024-10-11 19:52:21,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:21,353 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:21,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:21,357 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:52:21,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 19:52:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:21,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:52:21,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:21,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:52:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:52:21,573 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:52:21,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:21,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542543436] [2024-10-11 19:52:21,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542543436] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:52:21,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:52:21,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:52:21,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977886970] [2024-10-11 19:52:21,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:52:21,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:52:21,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:21,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:52:21,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:52:21,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-11 19:52:21,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 116 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:21,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:21,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-11 19:52:21,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:22,731 INFO L124 PetriNetUnfolderBase]: 2205/4833 cut-off events. [2024-10-11 19:52:22,732 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-10-11 19:52:22,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7937 conditions, 4833 events. 2205/4833 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39097 event pairs, 1390 based on Foata normal form. 1/3715 useless extension candidates. Maximal degree in co-relation 7419. Up to 2942 conditions per place. [2024-10-11 19:52:22,786 INFO L140 encePairwiseOnDemand]: 114/120 looper letters, 48 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2024-10-11 19:52:22,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 111 transitions, 340 flow [2024-10-11 19:52:22,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:52:22,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:52:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2024-10-11 19:52:22,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2024-10-11 19:52:22,802 INFO L175 Difference]: Start difference. First operand has 114 places, 116 transitions, 250 flow. Second operand 3 states and 249 transitions. [2024-10-11 19:52:22,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 111 transitions, 340 flow [2024-10-11 19:52:22,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 111 transitions, 328 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 19:52:22,858 INFO L231 Difference]: Finished difference. Result has 105 places, 111 transitions, 232 flow [2024-10-11 19:52:22,860 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=105, PETRI_TRANSITIONS=111} [2024-10-11 19:52:22,864 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -9 predicate places. [2024-10-11 19:52:22,866 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 111 transitions, 232 flow [2024-10-11 19:52:22,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:22,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:22,870 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:52:22,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-11 19:52:23,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:23,072 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 19:52:23,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:23,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1292103, now seen corresponding path program 1 times [2024-10-11 19:52:23,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:23,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323001386] [2024-10-11 19:52:23,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:23,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:23,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:23,077 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:52:23,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 19:52:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:23,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:52:23,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:23,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:52:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:52:23,267 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:52:23,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:23,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323001386] [2024-10-11 19:52:23,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323001386] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:52:23,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:52:23,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:52:23,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466195748] [2024-10-11 19:52:23,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:52:23,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:52:23,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:23,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:52:23,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:52:23,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-11 19:52:23,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 111 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:23,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:23,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-11 19:52:23,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:24,708 INFO L124 PetriNetUnfolderBase]: 2207/4841 cut-off events. [2024-10-11 19:52:24,708 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-10-11 19:52:24,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7857 conditions, 4841 events. 2207/4841 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39113 event pairs, 1390 based on Foata normal form. 0/3719 useless extension candidates. Maximal degree in co-relation 7809. Up to 2955 conditions per place. [2024-10-11 19:52:24,747 INFO L140 encePairwiseOnDemand]: 108/120 looper letters, 52 selfloop transitions, 9 changer transitions 0/119 dead transitions. [2024-10-11 19:52:24,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 119 transitions, 372 flow [2024-10-11 19:52:24,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:52:24,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:52:24,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2024-10-11 19:52:24,750 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6770833333333334 [2024-10-11 19:52:24,750 INFO L175 Difference]: Start difference. First operand has 105 places, 111 transitions, 232 flow. Second operand 4 states and 325 transitions. [2024-10-11 19:52:24,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 119 transitions, 372 flow [2024-10-11 19:52:24,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 119 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:52:24,755 INFO L231 Difference]: Finished difference. Result has 109 places, 118 transitions, 298 flow [2024-10-11 19:52:24,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=109, PETRI_TRANSITIONS=118} [2024-10-11 19:52:24,756 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -5 predicate places. [2024-10-11 19:52:24,756 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 118 transitions, 298 flow [2024-10-11 19:52:24,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:24,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:24,757 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:52:24,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-11 19:52:24,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:24,958 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 19:52:24,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:24,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1241752825, now seen corresponding path program 1 times [2024-10-11 19:52:24,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:24,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521391449] [2024-10-11 19:52:24,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:24,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:24,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:24,961 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:52:24,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-11 19:52:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:25,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:52:25,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:25,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:52:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:52:25,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:52:25,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:52:25,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:25,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521391449] [2024-10-11 19:52:25,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521391449] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:52:25,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:52:25,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:52:25,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829085094] [2024-10-11 19:52:25,467 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:52:25,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:52:25,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:25,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:52:25,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:52:26,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-11 19:52:26,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 118 transitions, 298 flow. Second operand has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:26,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:26,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-11 19:52:26,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:28,972 INFO L124 PetriNetUnfolderBase]: 2216/4868 cut-off events. [2024-10-11 19:52:28,973 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-11 19:52:28,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7968 conditions, 4868 events. 2216/4868 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39238 event pairs, 1390 based on Foata normal form. 0/3745 useless extension candidates. Maximal degree in co-relation 7822. Up to 2958 conditions per place. [2024-10-11 19:52:29,005 INFO L140 encePairwiseOnDemand]: 107/120 looper letters, 52 selfloop transitions, 36 changer transitions 0/146 dead transitions. [2024-10-11 19:52:29,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 146 transitions, 590 flow [2024-10-11 19:52:29,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:52:29,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:52:29,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 747 transitions. [2024-10-11 19:52:29,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6225 [2024-10-11 19:52:29,010 INFO L175 Difference]: Start difference. First operand has 109 places, 118 transitions, 298 flow. Second operand 10 states and 747 transitions. [2024-10-11 19:52:29,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 146 transitions, 590 flow [2024-10-11 19:52:29,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 146 transitions, 590 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:52:29,015 INFO L231 Difference]: Finished difference. Result has 121 places, 146 transitions, 538 flow [2024-10-11 19:52:29,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=538, PETRI_PLACES=121, PETRI_TRANSITIONS=146} [2024-10-11 19:52:29,016 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 7 predicate places. [2024-10-11 19:52:29,016 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 146 transitions, 538 flow [2024-10-11 19:52:29,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:29,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:29,017 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:52:29,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-11 19:52:29,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:29,220 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 19:52:29,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:29,221 INFO L85 PathProgramCache]: Analyzing trace with hash 506332438, now seen corresponding path program 1 times [2024-10-11 19:52:29,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:29,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974352093] [2024-10-11 19:52:29,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:29,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:29,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:29,223 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:52:29,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 19:52:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:29,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:52:29,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:29,350 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 5 [2024-10-11 19:52:29,410 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 19:52:29,410 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:52:29,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:29,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974352093] [2024-10-11 19:52:29,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974352093] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:52:29,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:52:29,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:52:29,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091855026] [2024-10-11 19:52:29,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:52:29,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:52:29,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:29,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:52:29,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:52:29,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-11 19:52:29,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 146 transitions, 538 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:29,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:29,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-11 19:52:29,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:30,658 INFO L124 PetriNetUnfolderBase]: 2217/4872 cut-off events. [2024-10-11 19:52:30,658 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-10-11 19:52:30,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8041 conditions, 4872 events. 2217/4872 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39256 event pairs, 1390 based on Foata normal form. 0/3754 useless extension candidates. Maximal degree in co-relation 7954. Up to 2985 conditions per place. [2024-10-11 19:52:30,704 INFO L140 encePairwiseOnDemand]: 114/120 looper letters, 82 selfloop transitions, 9 changer transitions 0/149 dead transitions. [2024-10-11 19:52:30,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 149 transitions, 726 flow [2024-10-11 19:52:30,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:52:30,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:52:30,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2024-10-11 19:52:30,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6366666666666667 [2024-10-11 19:52:30,707 INFO L175 Difference]: Start difference. First operand has 121 places, 146 transitions, 538 flow. Second operand 5 states and 382 transitions. [2024-10-11 19:52:30,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 149 transitions, 726 flow [2024-10-11 19:52:30,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 149 transitions, 643 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-10-11 19:52:30,713 INFO L231 Difference]: Finished difference. Result has 123 places, 149 transitions, 496 flow [2024-10-11 19:52:30,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=496, PETRI_PLACES=123, PETRI_TRANSITIONS=149} [2024-10-11 19:52:30,714 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 9 predicate places. [2024-10-11 19:52:30,714 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 149 transitions, 496 flow [2024-10-11 19:52:30,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:30,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:30,715 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:52:30,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-11 19:52:30,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:30,919 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 19:52:30,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:30,920 INFO L85 PathProgramCache]: Analyzing trace with hash 506332437, now seen corresponding path program 1 times [2024-10-11 19:52:30,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:30,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337976840] [2024-10-11 19:52:30,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:30,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:30,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:30,924 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:52:30,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 19:52:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:31,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:52:31,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:31,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:52:31,029 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 19:52:31,030 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:52:31,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:31,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337976840] [2024-10-11 19:52:31,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337976840] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:52:31,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:52:31,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:52:31,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533176931] [2024-10-11 19:52:31,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:52:31,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:52:31,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:31,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:52:31,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:52:31,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-11 19:52:31,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 149 transitions, 496 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:31,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:31,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-11 19:52:31,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:31,819 INFO L124 PetriNetUnfolderBase]: 2217/4868 cut-off events. [2024-10-11 19:52:31,820 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-10-11 19:52:31,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8012 conditions, 4868 events. 2217/4868 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 39227 event pairs, 1390 based on Foata normal form. 2/3755 useless extension candidates. Maximal degree in co-relation 7983. Up to 2973 conditions per place. [2024-10-11 19:52:31,857 INFO L140 encePairwiseOnDemand]: 115/120 looper letters, 82 selfloop transitions, 6 changer transitions 0/146 dead transitions. [2024-10-11 19:52:31,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 146 transitions, 666 flow [2024-10-11 19:52:31,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:52:31,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:52:31,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2024-10-11 19:52:31,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2024-10-11 19:52:31,860 INFO L175 Difference]: Start difference. First operand has 123 places, 149 transitions, 496 flow. Second operand 3 states and 248 transitions. [2024-10-11 19:52:31,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 146 transitions, 666 flow [2024-10-11 19:52:31,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 146 transitions, 657 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:52:31,863 INFO L231 Difference]: Finished difference. Result has 120 places, 146 transitions, 493 flow [2024-10-11 19:52:31,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=493, PETRI_PLACES=120, PETRI_TRANSITIONS=146} [2024-10-11 19:52:31,864 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 6 predicate places. [2024-10-11 19:52:31,865 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 146 transitions, 493 flow [2024-10-11 19:52:31,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:31,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:31,865 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:52:31,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-11 19:52:32,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:32,070 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 19:52:32,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:32,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1483561447, now seen corresponding path program 1 times [2024-10-11 19:52:32,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:32,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173635608] [2024-10-11 19:52:32,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:32,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:32,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:32,074 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:52:32,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 19:52:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:32,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 19:52:32,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:32,192 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 5 [2024-10-11 19:52:32,239 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 19:52:32,239 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:52:32,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:32,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173635608] [2024-10-11 19:52:32,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173635608] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:52:32,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:52:32,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:52:32,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908912769] [2024-10-11 19:52:32,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:52:32,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:52:32,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:32,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:52:32,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:52:32,549 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-11 19:52:32,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 146 transitions, 493 flow. Second operand has 5 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:32,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:32,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-11 19:52:32,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:33,253 INFO L124 PetriNetUnfolderBase]: 2218/4871 cut-off events. [2024-10-11 19:52:33,254 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-10-11 19:52:33,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8024 conditions, 4871 events. 2218/4871 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 39306 event pairs, 1390 based on Foata normal form. 0/3753 useless extension candidates. Maximal degree in co-relation 7995. Up to 2980 conditions per place. [2024-10-11 19:52:33,289 INFO L140 encePairwiseOnDemand]: 114/120 looper letters, 85 selfloop transitions, 9 changer transitions 0/149 dead transitions. [2024-10-11 19:52:33,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 149 transitions, 687 flow [2024-10-11 19:52:33,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:52:33,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:52:33,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2024-10-11 19:52:33,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6366666666666667 [2024-10-11 19:52:33,292 INFO L175 Difference]: Start difference. First operand has 120 places, 146 transitions, 493 flow. Second operand 5 states and 382 transitions. [2024-10-11 19:52:33,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 149 transitions, 687 flow [2024-10-11 19:52:33,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 149 transitions, 675 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:52:33,297 INFO L231 Difference]: Finished difference. Result has 124 places, 149 transitions, 519 flow [2024-10-11 19:52:33,297 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=519, PETRI_PLACES=124, PETRI_TRANSITIONS=149} [2024-10-11 19:52:33,297 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 10 predicate places. [2024-10-11 19:52:33,298 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 149 transitions, 519 flow [2024-10-11 19:52:33,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:33,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:33,299 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:52:33,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-10-11 19:52:33,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:33,504 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 19:52:33,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:33,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1254212453, now seen corresponding path program 1 times [2024-10-11 19:52:33,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:33,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155894938] [2024-10-11 19:52:33,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:33,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:33,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:33,509 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:52:33,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 19:52:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:33,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 19:52:33,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:33,627 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 5 [2024-10-11 19:52:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:52:33,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:52:34,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:52:34,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:34,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155894938] [2024-10-11 19:52:34,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155894938] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:52:34,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:52:34,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 19:52:34,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051164474] [2024-10-11 19:52:34,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:52:34,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 19:52:34,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:34,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 19:52:34,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-11 19:52:35,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-11 19:52:35,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 149 transitions, 519 flow. Second operand has 11 states, 11 states have (on average 66.81818181818181) internal successors, (735), 11 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:35,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:35,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-11 19:52:35,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:37,591 INFO L124 PetriNetUnfolderBase]: 2224/4889 cut-off events. [2024-10-11 19:52:37,591 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-10-11 19:52:37,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8087 conditions, 4889 events. 2224/4889 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39368 event pairs, 1390 based on Foata normal form. 0/3770 useless extension candidates. Maximal degree in co-relation 8046. Up to 2986 conditions per place. [2024-10-11 19:52:37,624 INFO L140 encePairwiseOnDemand]: 106/120 looper letters, 82 selfloop transitions, 30 changer transitions 0/167 dead transitions. [2024-10-11 19:52:37,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 167 transitions, 812 flow [2024-10-11 19:52:37,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 19:52:37,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 19:52:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 798 transitions. [2024-10-11 19:52:37,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6045454545454545 [2024-10-11 19:52:37,627 INFO L175 Difference]: Start difference. First operand has 124 places, 149 transitions, 519 flow. Second operand 11 states and 798 transitions. [2024-10-11 19:52:37,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 167 transitions, 812 flow [2024-10-11 19:52:37,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 167 transitions, 797 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:52:37,631 INFO L231 Difference]: Finished difference. Result has 136 places, 167 transitions, 684 flow [2024-10-11 19:52:37,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=684, PETRI_PLACES=136, PETRI_TRANSITIONS=167} [2024-10-11 19:52:37,632 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 22 predicate places. [2024-10-11 19:52:37,633 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 167 transitions, 684 flow [2024-10-11 19:52:37,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 66.81818181818181) internal successors, (735), 11 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:37,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:37,634 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 19:52:37,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-11 19:52:37,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:37,835 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 19:52:37,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:37,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1867256591, now seen corresponding path program 2 times [2024-10-11 19:52:37,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:37,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335172670] [2024-10-11 19:52:37,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:52:37,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:37,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:37,842 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:52:37,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 19:52:37,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:52:37,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:52:37,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 19:52:37,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:37,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:52:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:52:38,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:52:38,838 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:52:38,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:38,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335172670] [2024-10-11 19:52:38,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335172670] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:52:38,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:52:38,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:52:38,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485484660] [2024-10-11 19:52:38,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:52:38,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:52:38,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:38,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:52:38,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:52:41,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-11 19:52:41,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 167 transitions, 684 flow. Second operand has 14 states, 14 states have (on average 66.57142857142857) internal successors, (932), 14 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:41,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:41,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-11 19:52:41,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:56,046 INFO L124 PetriNetUnfolderBase]: 2242/4943 cut-off events. [2024-10-11 19:52:56,046 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-10-11 19:52:56,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8346 conditions, 4943 events. 2242/4943 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 39899 event pairs, 1390 based on Foata normal form. 18/3836 useless extension candidates. Maximal degree in co-relation 8290. Up to 2988 conditions per place. [2024-10-11 19:52:56,084 INFO L140 encePairwiseOnDemand]: 107/120 looper letters, 76 selfloop transitions, 90 changer transitions 0/221 dead transitions. [2024-10-11 19:52:56,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 221 transitions, 1304 flow [2024-10-11 19:52:56,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:52:56,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:52:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1590 transitions. [2024-10-11 19:52:56,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6022727272727273 [2024-10-11 19:52:56,090 INFO L175 Difference]: Start difference. First operand has 136 places, 167 transitions, 684 flow. Second operand 22 states and 1590 transitions. [2024-10-11 19:52:56,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 221 transitions, 1304 flow [2024-10-11 19:52:56,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 221 transitions, 1247 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-10-11 19:52:56,096 INFO L231 Difference]: Finished difference. Result has 159 places, 221 transitions, 1181 flow [2024-10-11 19:52:56,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1181, PETRI_PLACES=159, PETRI_TRANSITIONS=221} [2024-10-11 19:52:56,098 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 45 predicate places. [2024-10-11 19:52:56,098 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 221 transitions, 1181 flow [2024-10-11 19:52:56,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 66.57142857142857) internal successors, (932), 14 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:56,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:56,099 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:52:56,104 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 (9)] Forceful destruction successful, exit code 0 [2024-10-11 19:52:56,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:56,300 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 19:52:56,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:56,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1563952764, now seen corresponding path program 1 times [2024-10-11 19:52:56,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:56,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338839723] [2024-10-11 19:52:56,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:56,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:56,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:56,302 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:52:56,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-11 19:52:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:56,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 19:52:56,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:56,497 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 19:52:56,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:52:56,583 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 19:52:56,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:56,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338839723] [2024-10-11 19:52:56,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338839723] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:52:56,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:52:56,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-10-11 19:52:56,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593894863] [2024-10-11 19:52:56,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:52:56,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:52:56,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:56,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:52:56,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:52:56,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 120 [2024-10-11 19:52:56,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 221 transitions, 1181 flow. Second operand has 10 states, 10 states have (on average 69.7) internal successors, (697), 10 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:56,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:56,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 120 [2024-10-11 19:52:56,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:58,066 INFO L124 PetriNetUnfolderBase]: 4461/9802 cut-off events. [2024-10-11 19:52:58,066 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2024-10-11 19:52:58,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16645 conditions, 9802 events. 4461/9802 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 88669 event pairs, 2784 based on Foata normal form. 2/7681 useless extension candidates. Maximal degree in co-relation 16550. Up to 3023 conditions per place. [2024-10-11 19:52:58,111 INFO L140 encePairwiseOnDemand]: 109/120 looper letters, 223 selfloop transitions, 68 changer transitions 0/349 dead transitions. [2024-10-11 19:52:58,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 349 transitions, 2497 flow [2024-10-11 19:52:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 19:52:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 19:52:58,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 718 transitions. [2024-10-11 19:52:58,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6648148148148149 [2024-10-11 19:52:58,113 INFO L175 Difference]: Start difference. First operand has 159 places, 221 transitions, 1181 flow. Second operand 9 states and 718 transitions. [2024-10-11 19:52:58,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 349 transitions, 2497 flow [2024-10-11 19:52:58,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 349 transitions, 2113 flow, removed 114 selfloop flow, removed 9 redundant places. [2024-10-11 19:52:58,125 INFO L231 Difference]: Finished difference. Result has 158 places, 252 transitions, 1265 flow [2024-10-11 19:52:58,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1265, PETRI_PLACES=158, PETRI_TRANSITIONS=252} [2024-10-11 19:52:58,126 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 44 predicate places. [2024-10-11 19:52:58,126 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 252 transitions, 1265 flow [2024-10-11 19:52:58,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.7) internal successors, (697), 10 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:58,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:58,127 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:52:58,132 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 19:52:58,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:58,328 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 19:52:58,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:58,328 INFO L85 PathProgramCache]: Analyzing trace with hash -945424301, now seen corresponding path program 1 times [2024-10-11 19:52:58,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:58,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423970470] [2024-10-11 19:52:58,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:58,329 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:58,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:58,330 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:52:58,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-11 19:52:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:58,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 19:52:58,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:58,460 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 19:52:58,460 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:52:58,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:58,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423970470] [2024-10-11 19:52:58,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423970470] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:52:58,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:52:58,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:52:58,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689496673] [2024-10-11 19:52:58,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:52:58,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:52:58,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:58,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:52:58,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:52:58,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 120 [2024-10-11 19:52:58,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 252 transitions, 1265 flow. Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:58,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:52:58,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 120 [2024-10-11 19:52:58,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:52:59,320 INFO L124 PetriNetUnfolderBase]: 4469/9848 cut-off events. [2024-10-11 19:52:59,320 INFO L125 PetriNetUnfolderBase]: For 342/342 co-relation queries the response was YES. [2024-10-11 19:52:59,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16572 conditions, 9848 events. 4469/9848 cut-off events. For 342/342 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 89209 event pairs, 2780 based on Foata normal form. 2/7627 useless extension candidates. Maximal degree in co-relation 16465. Up to 6063 conditions per place. [2024-10-11 19:52:59,377 INFO L140 encePairwiseOnDemand]: 115/120 looper letters, 178 selfloop transitions, 14 changer transitions 0/250 dead transitions. [2024-10-11 19:52:59,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 250 transitions, 1631 flow [2024-10-11 19:52:59,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:52:59,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:52:59,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2024-10-11 19:52:59,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68125 [2024-10-11 19:52:59,379 INFO L175 Difference]: Start difference. First operand has 158 places, 252 transitions, 1265 flow. Second operand 4 states and 327 transitions. [2024-10-11 19:52:59,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 250 transitions, 1631 flow [2024-10-11 19:52:59,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 250 transitions, 1630 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:52:59,388 INFO L231 Difference]: Finished difference. Result has 160 places, 250 transitions, 1274 flow [2024-10-11 19:52:59,389 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1274, PETRI_PLACES=160, PETRI_TRANSITIONS=250} [2024-10-11 19:52:59,389 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 46 predicate places. [2024-10-11 19:52:59,390 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 250 transitions, 1274 flow [2024-10-11 19:52:59,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:52:59,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:52:59,390 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:52:59,396 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 19:52:59,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:59,591 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 19:52:59,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:52:59,592 INFO L85 PathProgramCache]: Analyzing trace with hash -378259573, now seen corresponding path program 1 times [2024-10-11 19:52:59,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:52:59,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363068501] [2024-10-11 19:52:59,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:52:59,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:52:59,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:52:59,595 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:52:59,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-11 19:52:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:52:59,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:52:59,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:52:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:52:59,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:52:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:52:59,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:52:59,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363068501] [2024-10-11 19:52:59,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363068501] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:52:59,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:52:59,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-10-11 19:52:59,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543595928] [2024-10-11 19:52:59,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:52:59,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:52:59,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:52:59,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:52:59,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:53:00,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 120 [2024-10-11 19:53:00,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 250 transitions, 1274 flow. Second operand has 12 states, 12 states have (on average 70.25) internal successors, (843), 12 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:00,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:00,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 120 [2024-10-11 19:53:00,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:02,183 INFO L124 PetriNetUnfolderBase]: 8861/19428 cut-off events. [2024-10-11 19:53:02,183 INFO L125 PetriNetUnfolderBase]: For 438/438 co-relation queries the response was YES. [2024-10-11 19:53:02,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32340 conditions, 19428 events. 8861/19428 cut-off events. For 438/438 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 195816 event pairs, 5568 based on Foata normal form. 4/15195 useless extension candidates. Maximal degree in co-relation 32170. Up to 6005 conditions per place. [2024-10-11 19:53:02,298 INFO L140 encePairwiseOnDemand]: 108/120 looper letters, 170 selfloop transitions, 104 changer transitions 0/332 dead transitions. [2024-10-11 19:53:02,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 332 transitions, 2258 flow [2024-10-11 19:53:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 19:53:02,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 19:53:02,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 712 transitions. [2024-10-11 19:53:02,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6592592592592592 [2024-10-11 19:53:02,302 INFO L175 Difference]: Start difference. First operand has 160 places, 250 transitions, 1274 flow. Second operand 9 states and 712 transitions. [2024-10-11 19:53:02,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 332 transitions, 2258 flow [2024-10-11 19:53:02,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 332 transitions, 2244 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:53:02,313 INFO L231 Difference]: Finished difference. Result has 166 places, 293 transitions, 1788 flow [2024-10-11 19:53:02,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1788, PETRI_PLACES=166, PETRI_TRANSITIONS=293} [2024-10-11 19:53:02,314 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 52 predicate places. [2024-10-11 19:53:02,314 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 293 transitions, 1788 flow [2024-10-11 19:53:02,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 70.25) internal successors, (843), 12 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:02,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:02,315 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:02,320 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 (12)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:02,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:02,516 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 19:53:02,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:02,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1149697714, now seen corresponding path program 1 times [2024-10-11 19:53:02,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:02,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240892205] [2024-10-11 19:53:02,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:02,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:02,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:02,520 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:53:02,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-11 19:53:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:02,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 19:53:02,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:02,652 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 5 [2024-10-11 19:53:02,754 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 19:53:02,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 19:53:03,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:03,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240892205] [2024-10-11 19:53:03,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240892205] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:03,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:53:03,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2024-10-11 19:53:03,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850720907] [2024-10-11 19:53:03,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:03,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 19:53:03,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:03,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 19:53:03,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-11 19:53:04,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-11 19:53:04,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 293 transitions, 1788 flow. Second operand has 11 states, 11 states have (on average 67.81818181818181) internal successors, (746), 11 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:04,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:04,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-11 19:53:04,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:10,239 INFO L124 PetriNetUnfolderBase]: 8901/19584 cut-off events. [2024-10-11 19:53:10,239 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-10-11 19:53:10,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32920 conditions, 19584 events. 8901/19584 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 198118 event pairs, 5560 based on Foata normal form. 20/15163 useless extension candidates. Maximal degree in co-relation 32748. Up to 11912 conditions per place. [2024-10-11 19:53:10,377 INFO L140 encePairwiseOnDemand]: 107/120 looper letters, 147 selfloop transitions, 140 changer transitions 0/342 dead transitions. [2024-10-11 19:53:10,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 342 transitions, 2814 flow [2024-10-11 19:53:10,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 19:53:10,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 19:53:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1067 transitions. [2024-10-11 19:53:10,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5927777777777777 [2024-10-11 19:53:10,382 INFO L175 Difference]: Start difference. First operand has 166 places, 293 transitions, 1788 flow. Second operand 15 states and 1067 transitions. [2024-10-11 19:53:10,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 342 transitions, 2814 flow [2024-10-11 19:53:10,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 342 transitions, 2799 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:53:10,399 INFO L231 Difference]: Finished difference. Result has 183 places, 342 transitions, 2657 flow [2024-10-11 19:53:10,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2657, PETRI_PLACES=183, PETRI_TRANSITIONS=342} [2024-10-11 19:53:10,400 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 69 predicate places. [2024-10-11 19:53:10,401 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 342 transitions, 2657 flow [2024-10-11 19:53:10,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 67.81818181818181) internal successors, (746), 11 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:10,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:10,401 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 19:53:10,408 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 (13)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:10,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:10,602 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 19:53:10,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:10,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1362457411, now seen corresponding path program 1 times [2024-10-11 19:53:10,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:10,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39662977] [2024-10-11 19:53:10,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:10,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:10,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:10,605 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:53:10,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-11 19:53:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:10,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:53:10,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 19:53:10,757 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:53:10,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:10,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39662977] [2024-10-11 19:53:10,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39662977] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:53:10,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:53:10,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:53:10,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935304277] [2024-10-11 19:53:10,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:53:10,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:53:10,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:10,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:53:10,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:53:10,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 120 [2024-10-11 19:53:10,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 342 transitions, 2657 flow. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:10,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:10,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 120 [2024-10-11 19:53:10,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:13,190 INFO L124 PetriNetUnfolderBase]: 8899/19582 cut-off events. [2024-10-11 19:53:13,190 INFO L125 PetriNetUnfolderBase]: For 668/668 co-relation queries the response was YES. [2024-10-11 19:53:13,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33164 conditions, 19582 events. 8899/19582 cut-off events. For 668/668 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 198012 event pairs, 5560 based on Foata normal form. 2/15144 useless extension candidates. Maximal degree in co-relation 32986. Up to 12055 conditions per place. [2024-10-11 19:53:13,302 INFO L140 encePairwiseOnDemand]: 115/120 looper letters, 270 selfloop transitions, 13 changer transitions 0/341 dead transitions. [2024-10-11 19:53:13,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 341 transitions, 3217 flow [2024-10-11 19:53:13,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:53:13,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:53:13,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2024-10-11 19:53:13,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68125 [2024-10-11 19:53:13,304 INFO L175 Difference]: Start difference. First operand has 183 places, 342 transitions, 2657 flow. Second operand 4 states and 327 transitions. [2024-10-11 19:53:13,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 341 transitions, 3217 flow [2024-10-11 19:53:13,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 341 transitions, 3015 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-10-11 19:53:13,321 INFO L231 Difference]: Finished difference. Result has 181 places, 341 transitions, 2475 flow [2024-10-11 19:53:13,321 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2475, PETRI_PLACES=181, PETRI_TRANSITIONS=341} [2024-10-11 19:53:13,322 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 67 predicate places. [2024-10-11 19:53:13,322 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 341 transitions, 2475 flow [2024-10-11 19:53:13,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:13,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:13,322 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:13,329 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 (14)] Forceful destruction successful, exit code 0 [2024-10-11 19:53:13,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:13,523 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 19:53:13,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:13,524 INFO L85 PathProgramCache]: Analyzing trace with hash -518592336, now seen corresponding path program 1 times [2024-10-11 19:53:13,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:13,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198824484] [2024-10-11 19:53:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:13,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:13,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:13,526 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:53:13,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-11 19:53:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:13,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 19:53:13,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 19:53:13,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 19:53:13,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:13,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198824484] [2024-10-11 19:53:13,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198824484] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:13,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:53:13,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-10-11 19:53:13,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21870774] [2024-10-11 19:53:13,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:13,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:53:13,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:13,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:53:13,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:53:14,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 120 [2024-10-11 19:53:14,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 341 transitions, 2475 flow. Second operand has 12 states, 12 states have (on average 70.66666666666667) internal successors, (848), 12 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:14,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:14,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 120 [2024-10-11 19:53:14,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:19,002 INFO L124 PetriNetUnfolderBase]: 17719/38864 cut-off events. [2024-10-11 19:53:19,003 INFO L125 PetriNetUnfolderBase]: For 1016/1016 co-relation queries the response was YES. [2024-10-11 19:53:19,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65368 conditions, 38864 events. 17719/38864 cut-off events. For 1016/1016 co-relation queries the response was YES. Maximal size of possible extension queue 1986. Compared 432628 event pairs, 11136 based on Foata normal form. 8/30400 useless extension candidates. Maximal degree in co-relation 65131. Up to 11919 conditions per place. [2024-10-11 19:53:19,374 INFO L140 encePairwiseOnDemand]: 108/120 looper letters, 235 selfloop transitions, 262 changer transitions 0/555 dead transitions. [2024-10-11 19:53:19,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 555 transitions, 5349 flow [2024-10-11 19:53:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 19:53:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 19:53:19,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 715 transitions. [2024-10-11 19:53:19,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6620370370370371 [2024-10-11 19:53:19,377 INFO L175 Difference]: Start difference. First operand has 181 places, 341 transitions, 2475 flow. Second operand 9 states and 715 transitions. [2024-10-11 19:53:19,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 555 transitions, 5349 flow [2024-10-11 19:53:19,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 555 transitions, 5348 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:53:19,395 INFO L231 Difference]: Finished difference. Result has 188 places, 463 transitions, 4324 flow [2024-10-11 19:53:19,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=2462, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4324, PETRI_PLACES=188, PETRI_TRANSITIONS=463} [2024-10-11 19:53:19,396 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 74 predicate places. [2024-10-11 19:53:19,396 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 463 transitions, 4324 flow [2024-10-11 19:53:19,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 70.66666666666667) internal successors, (848), 12 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:19,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:53:19,396 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:53:19,401 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 19:53:19,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:19,597 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-11 19:53:19,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:53:19,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1565297033, now seen corresponding path program 1 times [2024-10-11 19:53:19,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:53:19,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329330344] [2024-10-11 19:53:19,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:53:19,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:53:19,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:53:19,601 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:53:19,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-11 19:53:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:53:19,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 19:53:19,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:53:19,738 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 5 [2024-10-11 19:53:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 19:53:19,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:53:20,460 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 19:53:20,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:53:20,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329330344] [2024-10-11 19:53:20,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329330344] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:53:20,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:53:20,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2024-10-11 19:53:20,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258368996] [2024-10-11 19:53:20,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:53:20,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 19:53:20,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:53:20,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 19:53:20,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-10-11 19:53:23,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 120 [2024-10-11 19:53:23,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 463 transitions, 4324 flow. Second operand has 15 states, 15 states have (on average 67.66666666666667) internal successors, (1015), 15 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:53:23,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:53:23,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 120 [2024-10-11 19:53:23,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:53:31,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []