./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:09:41,258 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:09:41,332 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:09:41,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:09:41,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:09:41,367 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:09:41,368 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:09:41,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:09:41,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:09:41,374 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:09:41,375 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:09:41,376 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:09:41,377 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:09:41,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:09:41,380 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:09:41,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:09:41,382 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:09:41,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:09:41,388 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:09:41,388 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:09:41,389 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:09:41,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:09:41,390 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:09:41,391 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:09:41,391 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:09:41,392 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:09:41,392 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:09:41,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:09:41,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:09:41,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:09:41,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:09:41,396 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:09:41,397 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:09:41,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:09:41,397 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:09:41,398 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:09:41,398 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:09:41,398 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:09:41,398 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 [2023-11-06 22:09:41,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:09:41,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:09:41,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:09:41,790 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:09:41,790 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:09:41,792 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2023-11-06 22:09:45,308 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:09:45,584 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:09:45,585 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2023-11-06 22:09:45,596 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/data/fbf7f6cb7/40a88240e3f241e2979cb606ea650d7f/FLAG90c215974 [2023-11-06 22:09:45,616 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/data/fbf7f6cb7/40a88240e3f241e2979cb606ea650d7f [2023-11-06 22:09:45,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:09:45,622 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:09:45,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:09:45,624 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:09:45,631 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:09:45,632 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:09:45" (1/1) ... [2023-11-06 22:09:45,633 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ffd2be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:45, skipping insertion in model container [2023-11-06 22:09:45,634 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:09:45" (1/1) ... [2023-11-06 22:09:45,688 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:09:45,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:09:45,978 ERROR L324 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) [2023-11-06 22:09:45,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@327e35c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:45, skipping insertion in model container [2023-11-06 22:09:45,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:09:45,980 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 22:09:45,982 INFO L158 Benchmark]: Toolchain (without parser) took 359.40ms. Allocated memory is still 123.7MB. Free memory was 80.5MB in the beginning and 70.4MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:09:45,982 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 123.7MB. Free memory is still 66.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:09:45,983 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.20ms. Allocated memory is still 123.7MB. Free memory was 80.2MB in the beginning and 70.4MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:09:45,985 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 123.7MB. Free memory is still 66.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.20ms. Allocated memory is still 123.7MB. Free memory was 80.2MB in the beginning and 70.4MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 116]: 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: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:09:48,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:09:49,037 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:09:49,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:09:49,049 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:09:49,120 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:09:49,121 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:09:49,122 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:09:49,123 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:09:49,124 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:09:49,125 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:09:49,126 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:09:49,127 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:09:49,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:09:49,134 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:09:49,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:09:49,135 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:09:49,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:09:49,136 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:09:49,136 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:09:49,137 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:09:49,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:09:49,138 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:09:49,139 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:09:49,139 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:09:49,140 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:09:49,141 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:09:49,141 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:09:49,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:09:49,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:09:49,145 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:09:49,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:09:49,146 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:09:49,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:09:49,147 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:09:49,147 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:09:49,148 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:09:49,148 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:09:49,148 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:09:49,150 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:09:49,150 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:09:49,151 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1890d03ecee4b13e5a6c0f8c72292cb7ef9118f93d1435df375cec86140a0197 [2023-11-06 22:09:49,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:09:49,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:09:49,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:09:49,719 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:09:49,719 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:09:49,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2023-11-06 22:09:52,957 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:09:53,243 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:09:53,244 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2023-11-06 22:09:53,258 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/data/fca6db90a/fb7bf27e38c646818f0059c2fcc64ef1/FLAG0de968ff1 [2023-11-06 22:09:53,278 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/data/fca6db90a/fb7bf27e38c646818f0059c2fcc64ef1 [2023-11-06 22:09:53,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:09:53,286 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:09:53,289 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:09:53,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:09:53,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:09:53,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:09:53" (1/1) ... [2023-11-06 22:09:53,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@492353f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:53, skipping insertion in model container [2023-11-06 22:09:53,297 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:09:53" (1/1) ... [2023-11-06 22:09:53,332 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:09:53,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:09:53,582 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 22:09:53,587 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:09:53,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:09:53,629 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:09:53,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:09:53,670 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:09:53,671 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:09:53,679 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:09:53,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:53 WrapperNode [2023-11-06 22:09:53,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:09:53,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:09:53,681 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:09:53,681 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:09:53,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:53" (1/1) ... [2023-11-06 22:09:53,702 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:53" (1/1) ... [2023-11-06 22:09:53,743 INFO L138 Inliner]: procedures = 28, calls = 56, calls flagged for inlining = 17, calls inlined = 23, statements flattened = 281 [2023-11-06 22:09:53,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:09:53,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:09:53,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:09:53,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:09:53,755 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:53" (1/1) ... [2023-11-06 22:09:53,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:53" (1/1) ... [2023-11-06 22:09:53,771 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:53" (1/1) ... [2023-11-06 22:09:53,771 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:53" (1/1) ... [2023-11-06 22:09:53,800 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:53" (1/1) ... [2023-11-06 22:09:53,808 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:53" (1/1) ... [2023-11-06 22:09:53,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:53" (1/1) ... [2023-11-06 22:09:53,814 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:53" (1/1) ... [2023-11-06 22:09:53,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:09:53,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:09:53,820 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:09:53,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:09:53,837 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:53" (1/1) ... [2023-11-06 22:09:53,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:09:53,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:09:53,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:09:53,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:09:53,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:09:53,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:09:53,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:09:53,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:09:53,937 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:09:53,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:09:53,937 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:09:53,938 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:09:53,938 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:09:53,940 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:09:53,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:09:53,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:09:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:09:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:09:53,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:09:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:09:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:09:53,944 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:09:54,075 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:09:54,078 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:09:54,934 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:09:55,119 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:09:55,119 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-06 22:09:55,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:09:55 BoogieIcfgContainer [2023-11-06 22:09:55,123 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:09:55,127 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:09:55,127 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:09:55,130 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:09:55,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:09:53" (1/3) ... [2023-11-06 22:09:55,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710ea049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:09:55, skipping insertion in model container [2023-11-06 22:09:55,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:53" (2/3) ... [2023-11-06 22:09:55,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@710ea049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:09:55, skipping insertion in model container [2023-11-06 22:09:55,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:09:55" (3/3) ... [2023-11-06 22:09:55,136 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2023-11-06 22:09:55,156 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:09:55,156 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-06 22:09:55,156 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:09:55,310 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:09:55,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 302 transitions, 625 flow [2023-11-06 22:09:55,558 INFO L124 PetriNetUnfolderBase]: 25/299 cut-off events. [2023-11-06 22:09:55,558 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:09:55,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 299 events. 25/299 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 562 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 221. Up to 2 conditions per place. [2023-11-06 22:09:55,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 302 transitions, 625 flow [2023-11-06 22:09:55,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 294 transitions, 606 flow [2023-11-06 22:09:55,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:09:55,610 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 294 transitions, 606 flow [2023-11-06 22:09:55,612 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 294 transitions, 606 flow [2023-11-06 22:09:55,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 294 transitions, 606 flow [2023-11-06 22:09:55,697 INFO L124 PetriNetUnfolderBase]: 25/294 cut-off events. [2023-11-06 22:09:55,698 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:09:55,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 294 events. 25/294 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 564 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 221. Up to 2 conditions per place. [2023-11-06 22:09:55,713 INFO L119 LiptonReduction]: Number of co-enabled transitions 12768 [2023-11-06 22:10:38,138 INFO L134 LiptonReduction]: Checked pairs total: 14992 [2023-11-06 22:10:38,138 INFO L136 LiptonReduction]: Total number of compositions: 322 [2023-11-06 22:10:38,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:10:38,163 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@1c80197e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:10:38,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2023-11-06 22:10:38,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:10:38,167 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:10:38,167 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:10:38,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:38,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:10:38,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:10:38,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:38,175 INFO L85 PathProgramCache]: Analyzing trace with hash 44032, now seen corresponding path program 1 times [2023-11-06 22:10:38,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:10:38,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662278067] [2023-11-06 22:10:38,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:38,191 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 [2023-11-06 22:10:38,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:10:38,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:10:38,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:10:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:38,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:10:38,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:38,514 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-06 22:10:38,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,541 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,557 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:38,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,572 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,594 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,604 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:38,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,632 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,643 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:38,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,663 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,673 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:38,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,691 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,731 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:38,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,761 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:38,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,775 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,787 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:38,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,817 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,826 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:38,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,863 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:38,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,877 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,907 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:38,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,921 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:38,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,962 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:10:38,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:38,988 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:39,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:39,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:10:39,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:10:39,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662278067] [2023-11-06 22:10:39,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662278067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:39,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:39,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:10:39,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049975882] [2023-11-06 22:10:39,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:39,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:39,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:10:39,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:39,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:39,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 624 [2023-11-06 22:10:39,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 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) [2023-11-06 22:10:39,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:39,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 624 [2023-11-06 22:10:39,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:42,978 INFO L124 PetriNetUnfolderBase]: 12168/15557 cut-off events. [2023-11-06 22:10:42,979 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2023-11-06 22:10:43,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31229 conditions, 15557 events. 12168/15557 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 1363. Compared 78423 event pairs, 7100 based on Foata normal form. 0/4609 useless extension candidates. Maximal degree in co-relation 28665. Up to 15400 conditions per place. [2023-11-06 22:10:43,157 INFO L140 encePairwiseOnDemand]: 614/624 looper letters, 60 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2023-11-06 22:10:43,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 76 transitions, 304 flow [2023-11-06 22:10:43,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:43,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:43,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 850 transitions. [2023-11-06 22:10:43,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45405982905982906 [2023-11-06 22:10:43,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 850 transitions. [2023-11-06 22:10:43,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 850 transitions. [2023-11-06 22:10:43,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:43,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 850 transitions. [2023-11-06 22:10:43,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.3333333333333) internal successors, (850), 3 states have internal predecessors, (850), 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) [2023-11-06 22:10:43,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 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) [2023-11-06 22:10:43,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 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) [2023-11-06 22:10:43,224 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 156 flow. Second operand 3 states and 850 transitions. [2023-11-06 22:10:43,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 76 transitions, 304 flow [2023-11-06 22:10:43,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 292 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:10:43,269 INFO L231 Difference]: Finished difference. Result has 68 places, 74 transitions, 198 flow [2023-11-06 22:10:43,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=68, PETRI_TRANSITIONS=74} [2023-11-06 22:10:43,277 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -3 predicate places. [2023-11-06 22:10:43,278 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 74 transitions, 198 flow [2023-11-06 22:10:43,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 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) [2023-11-06 22:10:43,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:43,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:10:43,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:10:43,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:10:43,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:10:43,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:43,493 INFO L85 PathProgramCache]: Analyzing trace with hash 44031, now seen corresponding path program 1 times [2023-11-06 22:10:43,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:10:43,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1551802772] [2023-11-06 22:10:43,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:43,494 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 [2023-11-06 22:10:43,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:10:43,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:10:43,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:10:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:43,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:10:43,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:43,612 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:10:43,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,635 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:10:43,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,645 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:10:43,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,658 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:10:43,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,665 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:10:43,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,674 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:10:43,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,695 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:10:43,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,715 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:10:43,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,749 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:10:43,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,772 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:10:43,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,795 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:10:43,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,815 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:10:43,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,828 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:10:43,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,839 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:10:43,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,851 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:10:43,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,860 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:10:43,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,879 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:10:43,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,898 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:10:43,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,924 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:10:43,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,933 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:10:43,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,945 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:10:43,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,952 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:10:43,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,972 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:10:43,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:43,983 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:10:43,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:43,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:10:43,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:10:43,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1551802772] [2023-11-06 22:10:43,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1551802772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:43,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:43,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:10:43,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028052719] [2023-11-06 22:10:43,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:43,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:10:43,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:10:43,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:10:43,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:10:44,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 624 [2023-11-06 22:10:44,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 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) [2023-11-06 22:10:44,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:44,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 624 [2023-11-06 22:10:44,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:46,979 INFO L124 PetriNetUnfolderBase]: 12168/15553 cut-off events. [2023-11-06 22:10:46,979 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-11-06 22:10:47,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31070 conditions, 15553 events. 12168/15553 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 1363. Compared 78321 event pairs, 7100 based on Foata normal form. 4/4615 useless extension candidates. Maximal degree in co-relation 31014. Up to 15392 conditions per place. [2023-11-06 22:10:47,096 INFO L140 encePairwiseOnDemand]: 618/624 looper letters, 56 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2023-11-06 22:10:47,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 320 flow [2023-11-06 22:10:47,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:10:47,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:10:47,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 845 transitions. [2023-11-06 22:10:47,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4513888888888889 [2023-11-06 22:10:47,100 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 845 transitions. [2023-11-06 22:10:47,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 845 transitions. [2023-11-06 22:10:47,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:47,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 845 transitions. [2023-11-06 22:10:47,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 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) [2023-11-06 22:10:47,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 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) [2023-11-06 22:10:47,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 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) [2023-11-06 22:10:47,112 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 198 flow. Second operand 3 states and 845 transitions. [2023-11-06 22:10:47,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 320 flow [2023-11-06 22:10:47,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 72 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:47,116 INFO L231 Difference]: Finished difference. Result has 66 places, 72 transitions, 194 flow [2023-11-06 22:10:47,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=66, PETRI_TRANSITIONS=72} [2023-11-06 22:10:47,117 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -5 predicate places. [2023-11-06 22:10:47,117 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 72 transitions, 194 flow [2023-11-06 22:10:47,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 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) [2023-11-06 22:10:47,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:47,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:10:47,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:10:47,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:10:47,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:10:47,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:47,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1368321, now seen corresponding path program 1 times [2023-11-06 22:10:47,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:10:47,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612186462] [2023-11-06 22:10:47,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:47,321 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 [2023-11-06 22:10:47,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:10:47,323 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:10:47,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:10:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:47,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:10:47,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:47,428 INFO L351 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 [2023-11-06 22:10:47,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,442 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:47,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,451 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:47,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,462 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:47,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,476 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:47,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,496 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:47,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,520 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:47,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,531 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:47,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,540 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:47,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,551 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:47,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,563 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:47,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,571 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:47,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,582 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:47,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,594 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:47,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,607 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:47,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,615 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:10:47,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,639 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:47,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,651 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:47,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,670 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:47,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,693 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:47,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,728 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:10:47,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,748 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:47,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,764 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:10:47,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:47,785 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:10:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:47,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:10:48,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:10:48,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:10:48,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612186462] [2023-11-06 22:10:48,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612186462] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:10:48,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:10:48,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 22:10:48,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095573046] [2023-11-06 22:10:48,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:10:48,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:10:48,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:10:48,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:10:48,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:10:49,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 624 [2023-11-06 22:10:49,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 72 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 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) [2023-11-06 22:10:49,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:49,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 624 [2023-11-06 22:10:49,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:51,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:10:54,314 INFO L124 PetriNetUnfolderBase]: 12180/15571 cut-off events. [2023-11-06 22:10:54,314 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-11-06 22:10:54,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31133 conditions, 15571 events. 12180/15571 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 1363. Compared 78430 event pairs, 7100 based on Foata normal form. 0/4620 useless extension candidates. Maximal degree in co-relation 31014. Up to 15407 conditions per place. [2023-11-06 22:10:54,446 INFO L140 encePairwiseOnDemand]: 615/624 looper letters, 56 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2023-11-06 22:10:54,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 90 transitions, 446 flow [2023-11-06 22:10:54,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:10:54,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:10:54,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1587 transitions. [2023-11-06 22:10:54,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238782051282051 [2023-11-06 22:10:54,455 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1587 transitions. [2023-11-06 22:10:54,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1587 transitions. [2023-11-06 22:10:54,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:54,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1587 transitions. [2023-11-06 22:10:54,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 264.5) internal successors, (1587), 6 states have internal predecessors, (1587), 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) [2023-11-06 22:10:54,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 624.0) internal successors, (4368), 7 states have internal predecessors, (4368), 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) [2023-11-06 22:10:54,477 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 624.0) internal successors, (4368), 7 states have internal predecessors, (4368), 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) [2023-11-06 22:10:54,477 INFO L175 Difference]: Start difference. First operand has 66 places, 72 transitions, 194 flow. Second operand 6 states and 1587 transitions. [2023-11-06 22:10:54,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 90 transitions, 446 flow [2023-11-06 22:10:54,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 90 transitions, 414 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:10:54,482 INFO L231 Difference]: Finished difference. Result has 72 places, 90 transitions, 348 flow [2023-11-06 22:10:54,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=72, PETRI_TRANSITIONS=90} [2023-11-06 22:10:54,484 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 1 predicate places. [2023-11-06 22:10:54,484 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 90 transitions, 348 flow [2023-11-06 22:10:54,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 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) [2023-11-06 22:10:54,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:54,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:10:54,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:10:54,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:10:54,697 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:10:54,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:54,697 INFO L85 PathProgramCache]: Analyzing trace with hash 42476918, now seen corresponding path program 1 times [2023-11-06 22:10:54,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:10:54,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123878674] [2023-11-06 22:10:54,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:54,698 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 [2023-11-06 22:10:54,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:10:54,730 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:10:54,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:10:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:54,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:10:54,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:54,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:10:54,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:10:54,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123878674] [2023-11-06 22:10:54,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123878674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:54,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:54,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:54,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631872670] [2023-11-06 22:10:54,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:54,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:10:54,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:10:54,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:10:54,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:10:55,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 624 [2023-11-06 22:10:55,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 90 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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) [2023-11-06 22:10:55,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:55,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 624 [2023-11-06 22:10:55,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:57,053 INFO L124 PetriNetUnfolderBase]: 12180/15577 cut-off events. [2023-11-06 22:10:57,053 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-06 22:10:57,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31203 conditions, 15577 events. 12180/15577 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 1363. Compared 78448 event pairs, 7100 based on Foata normal form. 3/4632 useless extension candidates. Maximal degree in co-relation 31100. Up to 15417 conditions per place. [2023-11-06 22:10:57,157 INFO L140 encePairwiseOnDemand]: 618/624 looper letters, 84 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2023-11-06 22:10:57,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 96 transitions, 568 flow [2023-11-06 22:10:57,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:10:57,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:10:57,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1108 transitions. [2023-11-06 22:10:57,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4439102564102564 [2023-11-06 22:10:57,163 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1108 transitions. [2023-11-06 22:10:57,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1108 transitions. [2023-11-06 22:10:57,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:10:57,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1108 transitions. [2023-11-06 22:10:57,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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) [2023-11-06 22:10:57,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 624.0) internal successors, (3120), 5 states have internal predecessors, (3120), 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) [2023-11-06 22:10:57,176 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 624.0) internal successors, (3120), 5 states have internal predecessors, (3120), 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) [2023-11-06 22:10:57,176 INFO L175 Difference]: Start difference. First operand has 72 places, 90 transitions, 348 flow. Second operand 4 states and 1108 transitions. [2023-11-06 22:10:57,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 96 transitions, 568 flow [2023-11-06 22:10:57,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 521 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-11-06 22:10:57,181 INFO L231 Difference]: Finished difference. Result has 75 places, 90 transitions, 345 flow [2023-11-06 22:10:57,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=75, PETRI_TRANSITIONS=90} [2023-11-06 22:10:57,182 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 4 predicate places. [2023-11-06 22:10:57,183 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 90 transitions, 345 flow [2023-11-06 22:10:57,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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) [2023-11-06 22:10:57,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:10:57,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:10:57,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-06 22:10:57,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:10:57,396 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:10:57,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:10:57,396 INFO L85 PathProgramCache]: Analyzing trace with hash 42423195, now seen corresponding path program 1 times [2023-11-06 22:10:57,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:10:57,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576536722] [2023-11-06 22:10:57,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:10:57,397 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 [2023-11-06 22:10:57,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:10:57,398 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:10:57,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:10:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:10:57,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:10:57,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:10:57,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,603 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-06 22:10:57,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,626 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-06 22:10:57,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,681 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:10:57,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,702 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:10:57,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,738 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:10:57,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,774 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:10:57,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,792 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:10:57,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:10:57,859 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:10:57,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:10:57,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:10:57,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:10:57,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576536722] [2023-11-06 22:10:57,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576536722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:10:57,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:10:57,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:10:57,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252063043] [2023-11-06 22:10:57,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:10:57,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:10:57,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:10:57,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:10:57,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:10:58,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 624 [2023-11-06 22:10:58,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 90 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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) [2023-11-06 22:10:58,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:10:58,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 624 [2023-11-06 22:10:58,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:10:59,983 INFO L124 PetriNetUnfolderBase]: 9377/12125 cut-off events. [2023-11-06 22:10:59,983 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-06 22:11:00,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24281 conditions, 12125 events. 9377/12125 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 1015. Compared 60521 event pairs, 5426 based on Foata normal form. 0/3858 useless extension candidates. Maximal degree in co-relation 24233. Up to 11972 conditions per place. [2023-11-06 22:11:00,078 INFO L140 encePairwiseOnDemand]: 621/624 looper letters, 74 selfloop transitions, 1 changer transitions 0/84 dead transitions. [2023-11-06 22:11:00,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 457 flow [2023-11-06 22:11:00,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:00,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:00,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 858 transitions. [2023-11-06 22:11:00,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-11-06 22:11:00,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 858 transitions. [2023-11-06 22:11:00,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 858 transitions. [2023-11-06 22:11:00,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:00,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 858 transitions. [2023-11-06 22:11:00,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 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) [2023-11-06 22:11:00,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 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) [2023-11-06 22:11:00,096 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 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) [2023-11-06 22:11:00,096 INFO L175 Difference]: Start difference. First operand has 75 places, 90 transitions, 345 flow. Second operand 3 states and 858 transitions. [2023-11-06 22:11:00,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 457 flow [2023-11-06 22:11:00,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 84 transitions, 451 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:00,100 INFO L231 Difference]: Finished difference. Result has 74 places, 84 transitions, 303 flow [2023-11-06 22:11:00,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=303, PETRI_PLACES=74, PETRI_TRANSITIONS=84} [2023-11-06 22:11:00,102 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 3 predicate places. [2023-11-06 22:11:00,102 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 84 transitions, 303 flow [2023-11-06 22:11:00,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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) [2023-11-06 22:11:00,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:00,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:11:00,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:00,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:11:00,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:11:00,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:00,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1315118646, now seen corresponding path program 1 times [2023-11-06 22:11:00,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:11:00,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311397655] [2023-11-06 22:11:00,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:00,331 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 [2023-11-06 22:11:00,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:11:00,332 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:11:00,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:11:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:00,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:11:00,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:00,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:00,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:00,553 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-11-06 22:11:00,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:00,599 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-06 22:11:00,600 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 15 [2023-11-06 22:11:00,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:00,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:00,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:00,660 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-06 22:11:00,661 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 18 [2023-11-06 22:11:00,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:00,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:00,731 INFO L322 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2023-11-06 22:11:00,731 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22 [2023-11-06 22:11:00,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:00,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:00,768 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-11-06 22:11:00,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:00,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:00,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:00,829 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-06 22:11:00,829 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 18 [2023-11-06 22:11:00,903 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:11:00,904 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 22:11:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:11:00,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:00,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:11:00,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311397655] [2023-11-06 22:11:00,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311397655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:00,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:00,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:11:00,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524653227] [2023-11-06 22:11:00,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:00,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:00,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:11:00,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:00,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:01,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 624 [2023-11-06 22:11:01,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 84 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 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) [2023-11-06 22:11:01,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:01,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 624 [2023-11-06 22:11:01,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:02,350 INFO L124 PetriNetUnfolderBase]: 6574/8673 cut-off events. [2023-11-06 22:11:02,350 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-06 22:11:02,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17360 conditions, 8673 events. 6574/8673 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 43244 event pairs, 3752 based on Foata normal form. 0/3084 useless extension candidates. Maximal degree in co-relation 17346. Up to 8520 conditions per place. [2023-11-06 22:11:02,402 INFO L140 encePairwiseOnDemand]: 621/624 looper letters, 68 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2023-11-06 22:11:02,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 78 transitions, 403 flow [2023-11-06 22:11:02,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:02,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 853 transitions. [2023-11-06 22:11:02,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45566239316239315 [2023-11-06 22:11:02,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 853 transitions. [2023-11-06 22:11:02,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 853 transitions. [2023-11-06 22:11:02,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:02,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 853 transitions. [2023-11-06 22:11:02,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.3333333333333) internal successors, (853), 3 states have internal predecessors, (853), 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) [2023-11-06 22:11:02,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 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) [2023-11-06 22:11:02,417 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 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) [2023-11-06 22:11:02,418 INFO L175 Difference]: Start difference. First operand has 74 places, 84 transitions, 303 flow. Second operand 3 states and 853 transitions. [2023-11-06 22:11:02,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 78 transitions, 403 flow [2023-11-06 22:11:02,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 78 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:02,422 INFO L231 Difference]: Finished difference. Result has 73 places, 78 transitions, 266 flow [2023-11-06 22:11:02,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=73, PETRI_TRANSITIONS=78} [2023-11-06 22:11:02,423 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2023-11-06 22:11:02,423 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 78 transitions, 266 flow [2023-11-06 22:11:02,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 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) [2023-11-06 22:11:02,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:02,424 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:11:02,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:11:02,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:11:02,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:11:02,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:02,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2112250944, now seen corresponding path program 2 times [2023-11-06 22:11:02,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:11:02,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984268714] [2023-11-06 22:11:02,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:11:02,637 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 [2023-11-06 22:11:02,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:11:02,638 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:11:02,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:11:02,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:11:02,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:11:02,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:11:02,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:02,768 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-06 22:11:02,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:02,785 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:02,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:02,797 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:02,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:02,807 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:11:02,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:02,819 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:02,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:02,827 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:11:02,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:02,841 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:02,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:02,849 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:11:02,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:02,858 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:11:02,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:02,869 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:02,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:02,892 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:02,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:02,903 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:02,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:02,914 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:02,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:02,921 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:11:02,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:02,946 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:02,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:02,958 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:02,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:02,967 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:11:02,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:02,980 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:03,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:03,015 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:03,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:03,028 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:03,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:03,060 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:03,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:03,074 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:03,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:03,106 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:03,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:03,147 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:11:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:03,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:04,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:11:04,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984268714] [2023-11-06 22:11:04,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984268714] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:04,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:11:04,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:11:04,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241180512] [2023-11-06 22:11:04,112 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:04,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:11:04,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:11:04,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:11:04,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:11:11,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 624 [2023-11-06 22:11:11,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 78 transitions, 266 flow. Second operand has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 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) [2023-11-06 22:11:11,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:11,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 624 [2023-11-06 22:11:11,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:15,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:11:17,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:11:19,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:11:21,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:11:24,559 INFO L124 PetriNetUnfolderBase]: 6583/8694 cut-off events. [2023-11-06 22:11:24,560 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-06 22:11:24,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17442 conditions, 8694 events. 6583/8694 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 43430 event pairs, 3752 based on Foata normal form. 12/3111 useless extension candidates. Maximal degree in co-relation 17427. Up to 8509 conditions per place. [2023-11-06 22:11:24,606 INFO L140 encePairwiseOnDemand]: 617/624 looper letters, 52 selfloop transitions, 35 changer transitions 0/96 dead transitions. [2023-11-06 22:11:24,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 96 transitions, 548 flow [2023-11-06 22:11:24,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:11:24,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:11:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3120 transitions. [2023-11-06 22:11:24,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-11-06 22:11:24,619 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3120 transitions. [2023-11-06 22:11:24,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3120 transitions. [2023-11-06 22:11:24,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:24,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3120 transitions. [2023-11-06 22:11:24,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 260.0) internal successors, (3120), 12 states have internal predecessors, (3120), 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) [2023-11-06 22:11:24,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 624.0) internal successors, (8112), 13 states have internal predecessors, (8112), 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) [2023-11-06 22:11:24,650 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 624.0) internal successors, (8112), 13 states have internal predecessors, (8112), 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) [2023-11-06 22:11:24,651 INFO L175 Difference]: Start difference. First operand has 73 places, 78 transitions, 266 flow. Second operand 12 states and 3120 transitions. [2023-11-06 22:11:24,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 96 transitions, 548 flow [2023-11-06 22:11:24,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 96 transitions, 547 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:24,655 INFO L231 Difference]: Finished difference. Result has 89 places, 96 transitions, 494 flow [2023-11-06 22:11:24,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=494, PETRI_PLACES=89, PETRI_TRANSITIONS=96} [2023-11-06 22:11:24,656 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 18 predicate places. [2023-11-06 22:11:24,656 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 96 transitions, 494 flow [2023-11-06 22:11:24,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 253.0) internal successors, (3036), 12 states have internal predecessors, (3036), 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) [2023-11-06 22:11:24,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:24,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:11:24,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:24,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:11:24,875 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:11:24,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:24,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2114018693, now seen corresponding path program 1 times [2023-11-06 22:11:24,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:11:24,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974876675] [2023-11-06 22:11:24,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:24,875 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 [2023-11-06 22:11:24,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:11:24,879 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:11:24,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:11:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:25,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:11:25,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:25,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:25,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:25,055 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 22:11:25,066 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 22:11:25,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:25,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:25,098 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:25,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:25,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:25,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:25,152 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:11:25,170 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:11:25,175 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:11:25,190 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:11:25,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:25,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:25,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:25,226 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:11:25,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:25,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:25,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:25,262 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:11:25,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:25,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:25,284 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:25,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:25,336 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:11:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:25,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:25,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:11:25,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974876675] [2023-11-06 22:11:25,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974876675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:25,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:25,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:11:25,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506909853] [2023-11-06 22:11:25,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:25,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:11:25,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:11:25,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:11:25,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:11:25,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 624 [2023-11-06 22:11:25,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 96 transitions, 494 flow. Second operand has 4 states, 4 states have (on average 268.5) internal successors, (1074), 4 states have internal predecessors, (1074), 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) [2023-11-06 22:11:25,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:25,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 624 [2023-11-06 22:11:25,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:27,033 INFO L124 PetriNetUnfolderBase]: 6359/8389 cut-off events. [2023-11-06 22:11:27,033 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2023-11-06 22:11:27,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16917 conditions, 8389 events. 6359/8389 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 41630 event pairs, 3618 based on Foata normal form. 0/3041 useless extension candidates. Maximal degree in co-relation 16895. Up to 8236 conditions per place. [2023-11-06 22:11:27,088 INFO L140 encePairwiseOnDemand]: 621/624 looper letters, 84 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-11-06 22:11:27,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 94 transitions, 660 flow [2023-11-06 22:11:27,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:27,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 854 transitions. [2023-11-06 22:11:27,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4561965811965812 [2023-11-06 22:11:27,094 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 854 transitions. [2023-11-06 22:11:27,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 854 transitions. [2023-11-06 22:11:27,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:27,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 854 transitions. [2023-11-06 22:11:27,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 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) [2023-11-06 22:11:27,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 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) [2023-11-06 22:11:27,105 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 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) [2023-11-06 22:11:27,105 INFO L175 Difference]: Start difference. First operand has 89 places, 96 transitions, 494 flow. Second operand 3 states and 854 transitions. [2023-11-06 22:11:27,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 94 transitions, 660 flow [2023-11-06 22:11:27,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 94 transitions, 554 flow, removed 30 selfloop flow, removed 5 redundant places. [2023-11-06 22:11:27,111 INFO L231 Difference]: Finished difference. Result has 84 places, 94 transitions, 386 flow [2023-11-06 22:11:27,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=386, PETRI_PLACES=84, PETRI_TRANSITIONS=94} [2023-11-06 22:11:27,112 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 13 predicate places. [2023-11-06 22:11:27,112 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 94 transitions, 386 flow [2023-11-06 22:11:27,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 268.5) internal successors, (1074), 4 states have internal predecessors, (1074), 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) [2023-11-06 22:11:27,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:27,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:11:27,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:11:27,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:11:27,327 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:11:27,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:27,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2114018692, now seen corresponding path program 1 times [2023-11-06 22:11:27,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:11:27,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098685825] [2023-11-06 22:11:27,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:27,333 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 [2023-11-06 22:11:27,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:11:27,334 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:11:27,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:11:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:27,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:11:27,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:27,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:27,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:27,510 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-06 22:11:27,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:27,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:27,557 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-06 22:11:27,557 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 15 [2023-11-06 22:11:27,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:27,607 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-06 22:11:27,607 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2023-11-06 22:11:27,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:27,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:27,637 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-06 22:11:27,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:27,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:27,686 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-11-06 22:11:27,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:27,733 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-06 22:11:27,733 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 15 [2023-11-06 22:11:27,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:27,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:27,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:27,802 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 11 [2023-11-06 22:11:27,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:27,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:27,873 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-06 22:11:27,873 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2023-11-06 22:11:28,059 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:11:28,060 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 64 [2023-11-06 22:11:28,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:28,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:28,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:11:28,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098685825] [2023-11-06 22:11:28,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098685825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:28,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:28,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:11:28,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483384122] [2023-11-06 22:11:28,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:28,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:28,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:11:28,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:28,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:28,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 624 [2023-11-06 22:11:28,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 94 transitions, 386 flow. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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) [2023-11-06 22:11:28,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:28,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 624 [2023-11-06 22:11:28,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:29,965 INFO L124 PetriNetUnfolderBase]: 6135/8084 cut-off events. [2023-11-06 22:11:29,965 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-06 22:11:29,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16244 conditions, 8084 events. 6135/8084 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 39914 event pairs, 3484 based on Foata normal form. 0/2979 useless extension candidates. Maximal degree in co-relation 16222. Up to 7931 conditions per place. [2023-11-06 22:11:30,022 INFO L140 encePairwiseOnDemand]: 621/624 looper letters, 82 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2023-11-06 22:11:30,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 92 transitions, 548 flow [2023-11-06 22:11:30,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:30,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:30,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 849 transitions. [2023-11-06 22:11:30,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453525641025641 [2023-11-06 22:11:30,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 849 transitions. [2023-11-06 22:11:30,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 849 transitions. [2023-11-06 22:11:30,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:30,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 849 transitions. [2023-11-06 22:11:30,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 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) [2023-11-06 22:11:30,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 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) [2023-11-06 22:11:30,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 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) [2023-11-06 22:11:30,038 INFO L175 Difference]: Start difference. First operand has 84 places, 94 transitions, 386 flow. Second operand 3 states and 849 transitions. [2023-11-06 22:11:30,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 92 transitions, 548 flow [2023-11-06 22:11:30,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 547 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:30,044 INFO L231 Difference]: Finished difference. Result has 83 places, 92 transitions, 383 flow [2023-11-06 22:11:30,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=83, PETRI_TRANSITIONS=92} [2023-11-06 22:11:30,045 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 12 predicate places. [2023-11-06 22:11:30,045 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 92 transitions, 383 flow [2023-11-06 22:11:30,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 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) [2023-11-06 22:11:30,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:30,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:30,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:30,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:11:30,258 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:11:30,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:30,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1110059330, now seen corresponding path program 1 times [2023-11-06 22:11:30,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:11:30,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863072935] [2023-11-06 22:11:30,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:30,259 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 [2023-11-06 22:11:30,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:11:30,261 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:11:30,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:11:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:30,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:11:30,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:30,399 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2023-11-06 22:11:30,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,410 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:30,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,424 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:11:30,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,431 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:30,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,459 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:11:30,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,474 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:11:30,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,495 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:11:30,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,503 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:30,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,512 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:30,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,517 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:11:30,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,522 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:11:30,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,538 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:30,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,547 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:30,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,551 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:11:30,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,571 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:11:30,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,579 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:30,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,585 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:11:30,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,593 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:30,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,600 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:11:30,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,608 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:30,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,622 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:11:30,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,629 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:30,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,634 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:11:30,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:30,640 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:30,676 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 22:11:30,677 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 22:11:30,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:30,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:30,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:11:30,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863072935] [2023-11-06 22:11:30,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863072935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:30,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:30,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:11:30,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827453050] [2023-11-06 22:11:30,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:30,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:11:30,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:11:30,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:11:30,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:11:31,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 624 [2023-11-06 22:11:31,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 92 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 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) [2023-11-06 22:11:31,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:31,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 624 [2023-11-06 22:11:31,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:32,011 INFO L124 PetriNetUnfolderBase]: 4170/5548 cut-off events. [2023-11-06 22:11:32,011 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-11-06 22:11:32,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11234 conditions, 5548 events. 4170/5548 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 26059 event pairs, 2433 based on Foata normal form. 0/2328 useless extension candidates. Maximal degree in co-relation 11211. Up to 5432 conditions per place. [2023-11-06 22:11:32,049 INFO L140 encePairwiseOnDemand]: 615/624 looper letters, 60 selfloop transitions, 20 changer transitions 0/86 dead transitions. [2023-11-06 22:11:32,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 86 transitions, 531 flow [2023-11-06 22:11:32,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:11:32,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:11:32,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1292 transitions. [2023-11-06 22:11:32,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41410256410256413 [2023-11-06 22:11:32,055 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1292 transitions. [2023-11-06 22:11:32,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1292 transitions. [2023-11-06 22:11:32,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:32,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1292 transitions. [2023-11-06 22:11:32,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 258.4) internal successors, (1292), 5 states have internal predecessors, (1292), 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) [2023-11-06 22:11:32,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 624.0) internal successors, (3744), 6 states have internal predecessors, (3744), 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) [2023-11-06 22:11:32,067 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 624.0) internal successors, (3744), 6 states have internal predecessors, (3744), 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) [2023-11-06 22:11:32,067 INFO L175 Difference]: Start difference. First operand has 83 places, 92 transitions, 383 flow. Second operand 5 states and 1292 transitions. [2023-11-06 22:11:32,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 86 transitions, 531 flow [2023-11-06 22:11:32,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 86 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:32,072 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 410 flow [2023-11-06 22:11:32,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=410, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2023-11-06 22:11:32,073 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 9 predicate places. [2023-11-06 22:11:32,074 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 410 flow [2023-11-06 22:11:32,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 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) [2023-11-06 22:11:32,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:32,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:32,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:11:32,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:11:32,286 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:11:32,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:32,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1110059331, now seen corresponding path program 1 times [2023-11-06 22:11:32,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:11:32,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136561796] [2023-11-06 22:11:32,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:32,287 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 [2023-11-06 22:11:32,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:11:32,288 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:11:32,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:11:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:32,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:11:32,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:32,443 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-06 22:11:32,454 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2023-11-06 22:11:32,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,485 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:32,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,525 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:11:32,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,546 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:32,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,567 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:32,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,580 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:32,591 INFO L351 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 [2023-11-06 22:11:32,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,602 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:11:32,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,614 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:32,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,628 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:32,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,650 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:32,659 INFO L351 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 [2023-11-06 22:11:32,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,671 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:11:32,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,683 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:32,694 INFO L351 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 [2023-11-06 22:11:32,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,705 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:11:32,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,717 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:32,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,732 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:32,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,756 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:32,765 INFO L351 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 [2023-11-06 22:11:32,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,777 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:11:32,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,789 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:32,801 INFO L351 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 [2023-11-06 22:11:32,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,813 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:11:32,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,826 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:32,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,841 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:32,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,864 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:11:32,877 INFO L351 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 [2023-11-06 22:11:32,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,889 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:11:32,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:32,901 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:11:33,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:33,005 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:11:33,026 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:11:33,027 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:11:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:33,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:11:33,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:33,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:11:33,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136561796] [2023-11-06 22:11:33,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136561796] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:11:33,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:11:33,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:11:33,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305843912] [2023-11-06 22:11:33,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:11:33,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:11:33,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:11:33,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:11:33,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:11:41,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 624 [2023-11-06 22:11:41,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 410 flow. Second operand has 10 states, 10 states have (on average 237.4) internal successors, (2374), 10 states have internal predecessors, (2374), 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) [2023-11-06 22:11:41,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:41,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 624 [2023-11-06 22:11:41,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:48,585 INFO L124 PetriNetUnfolderBase]: 15076/20087 cut-off events. [2023-11-06 22:11:48,586 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2023-11-06 22:11:48,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40504 conditions, 20087 events. 15076/20087 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 1208. Compared 112439 event pairs, 4197 based on Foata normal form. 0/8985 useless extension candidates. Maximal degree in co-relation 40480. Up to 3252 conditions per place. [2023-11-06 22:11:48,721 INFO L140 encePairwiseOnDemand]: 611/624 looper letters, 238 selfloop transitions, 54 changer transitions 0/296 dead transitions. [2023-11-06 22:11:48,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 296 transitions, 1638 flow [2023-11-06 22:11:48,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:11:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-06 22:11:48,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4988 transitions. [2023-11-06 22:11:48,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3996794871794872 [2023-11-06 22:11:48,739 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4988 transitions. [2023-11-06 22:11:48,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4988 transitions. [2023-11-06 22:11:48,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:48,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4988 transitions. [2023-11-06 22:11:48,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 249.4) internal successors, (4988), 20 states have internal predecessors, (4988), 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) [2023-11-06 22:11:48,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 624.0) internal successors, (13104), 21 states have internal predecessors, (13104), 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) [2023-11-06 22:11:48,778 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 624.0) internal successors, (13104), 21 states have internal predecessors, (13104), 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) [2023-11-06 22:11:48,779 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 410 flow. Second operand 20 states and 4988 transitions. [2023-11-06 22:11:48,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 296 transitions, 1638 flow [2023-11-06 22:11:48,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 296 transitions, 1590 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:11:48,788 INFO L231 Difference]: Finished difference. Result has 97 places, 114 transitions, 671 flow [2023-11-06 22:11:48,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=671, PETRI_PLACES=97, PETRI_TRANSITIONS=114} [2023-11-06 22:11:48,790 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 26 predicate places. [2023-11-06 22:11:48,790 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 114 transitions, 671 flow [2023-11-06 22:11:48,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 237.4) internal successors, (2374), 10 states have internal predecessors, (2374), 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) [2023-11-06 22:11:48,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:48,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:48,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:11:49,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:11:49,006 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:11:49,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:49,006 INFO L85 PathProgramCache]: Analyzing trace with hash 52108151, now seen corresponding path program 1 times [2023-11-06 22:11:49,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:11:49,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833305658] [2023-11-06 22:11:49,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:49,007 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 [2023-11-06 22:11:49,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:11:49,008 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:11:49,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:11:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:49,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:11:49,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:49,123 INFO L351 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 [2023-11-06 22:11:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:49,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:49,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:11:49,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833305658] [2023-11-06 22:11:49,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833305658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:49,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:49,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:11:49,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475530692] [2023-11-06 22:11:49,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:49,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:11:49,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:11:49,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:11:49,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:11:50,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 624 [2023-11-06 22:11:50,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 114 transitions, 671 flow. Second operand has 5 states, 5 states have (on average 249.6) internal successors, (1248), 5 states have internal predecessors, (1248), 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) [2023-11-06 22:11:50,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:50,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 624 [2023-11-06 22:11:50,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:55,274 INFO L124 PetriNetUnfolderBase]: 20535/27283 cut-off events. [2023-11-06 22:11:55,275 INFO L125 PetriNetUnfolderBase]: For 3946/3946 co-relation queries the response was YES. [2023-11-06 22:11:55,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60092 conditions, 27283 events. 20535/27283 cut-off events. For 3946/3946 co-relation queries the response was YES. Maximal size of possible extension queue 1664. Compared 158062 event pairs, 7385 based on Foata normal form. 0/13665 useless extension candidates. Maximal degree in co-relation 60066. Up to 19802 conditions per place. [2023-11-06 22:11:55,495 INFO L140 encePairwiseOnDemand]: 616/624 looper letters, 100 selfloop transitions, 39 changer transitions 0/143 dead transitions. [2023-11-06 22:11:55,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 143 transitions, 1019 flow [2023-11-06 22:11:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:11:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:11:55,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1314 transitions. [2023-11-06 22:11:55,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42115384615384616 [2023-11-06 22:11:55,502 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1314 transitions. [2023-11-06 22:11:55,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1314 transitions. [2023-11-06 22:11:55,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:55,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1314 transitions. [2023-11-06 22:11:55,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 262.8) internal successors, (1314), 5 states have internal predecessors, (1314), 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) [2023-11-06 22:11:55,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 624.0) internal successors, (3744), 6 states have internal predecessors, (3744), 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) [2023-11-06 22:11:55,514 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 624.0) internal successors, (3744), 6 states have internal predecessors, (3744), 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) [2023-11-06 22:11:55,515 INFO L175 Difference]: Start difference. First operand has 97 places, 114 transitions, 671 flow. Second operand 5 states and 1314 transitions. [2023-11-06 22:11:55,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 143 transitions, 1019 flow [2023-11-06 22:11:55,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 143 transitions, 889 flow, removed 26 selfloop flow, removed 6 redundant places. [2023-11-06 22:11:55,529 INFO L231 Difference]: Finished difference. Result has 96 places, 121 transitions, 671 flow [2023-11-06 22:11:55,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=671, PETRI_PLACES=96, PETRI_TRANSITIONS=121} [2023-11-06 22:11:55,531 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 25 predicate places. [2023-11-06 22:11:55,531 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 121 transitions, 671 flow [2023-11-06 22:11:55,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 249.6) internal successors, (1248), 5 states have internal predecessors, (1248), 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) [2023-11-06 22:11:55,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:55,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:55,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:11:55,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:11:55,746 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:11:55,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:55,746 INFO L85 PathProgramCache]: Analyzing trace with hash 52108150, now seen corresponding path program 1 times [2023-11-06 22:11:55,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:11:55,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161778394] [2023-11-06 22:11:55,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:55,747 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 [2023-11-06 22:11:55,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:11:55,749 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:11:55,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:11:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:55,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:11:55,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:55,867 INFO L351 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 [2023-11-06 22:11:55,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:55,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:55,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:11:55,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161778394] [2023-11-06 22:11:55,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161778394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:55,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:55,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:11:55,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512715176] [2023-11-06 22:11:55,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:55,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:11:55,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:11:55,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:11:55,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:11:56,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 624 [2023-11-06 22:11:56,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 121 transitions, 671 flow. Second operand has 4 states, 4 states have (on average 258.75) internal successors, (1035), 4 states have internal predecessors, (1035), 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) [2023-11-06 22:11:56,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:56,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 624 [2023-11-06 22:11:56,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:58,937 INFO L124 PetriNetUnfolderBase]: 12908/17073 cut-off events. [2023-11-06 22:11:58,937 INFO L125 PetriNetUnfolderBase]: For 9130/9671 co-relation queries the response was YES. [2023-11-06 22:11:59,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42611 conditions, 17073 events. 12908/17073 cut-off events. For 9130/9671 co-relation queries the response was YES. Maximal size of possible extension queue 1046. Compared 92080 event pairs, 6765 based on Foata normal form. 430/10697 useless extension candidates. Maximal degree in co-relation 42587. Up to 16742 conditions per place. [2023-11-06 22:11:59,066 INFO L140 encePairwiseOnDemand]: 619/624 looper letters, 94 selfloop transitions, 17 changer transitions 0/118 dead transitions. [2023-11-06 22:11:59,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 118 transitions, 887 flow [2023-11-06 22:11:59,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:11:59,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:11:59,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1074 transitions. [2023-11-06 22:11:59,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43028846153846156 [2023-11-06 22:11:59,072 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1074 transitions. [2023-11-06 22:11:59,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1074 transitions. [2023-11-06 22:11:59,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:59,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1074 transitions. [2023-11-06 22:11:59,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 268.5) internal successors, (1074), 4 states have internal predecessors, (1074), 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) [2023-11-06 22:11:59,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 624.0) internal successors, (3120), 5 states have internal predecessors, (3120), 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) [2023-11-06 22:11:59,077 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 624.0) internal successors, (3120), 5 states have internal predecessors, (3120), 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) [2023-11-06 22:11:59,078 INFO L175 Difference]: Start difference. First operand has 96 places, 121 transitions, 671 flow. Second operand 4 states and 1074 transitions. [2023-11-06 22:11:59,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 118 transitions, 887 flow [2023-11-06 22:11:59,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 118 transitions, 821 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:11:59,087 INFO L231 Difference]: Finished difference. Result has 93 places, 118 transitions, 633 flow [2023-11-06 22:11:59,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=633, PETRI_PLACES=93, PETRI_TRANSITIONS=118} [2023-11-06 22:11:59,089 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 22 predicate places. [2023-11-06 22:11:59,089 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 118 transitions, 633 flow [2023-11-06 22:11:59,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.75) internal successors, (1035), 4 states have internal predecessors, (1035), 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) [2023-11-06 22:11:59,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:59,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:59,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:11:59,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:11:59,302 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:11:59,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:59,303 INFO L85 PathProgramCache]: Analyzing trace with hash 52463966, now seen corresponding path program 1 times [2023-11-06 22:11:59,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:11:59,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827184816] [2023-11-06 22:11:59,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:59,304 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 [2023-11-06 22:11:59,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:11:59,305 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:11:59,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:11:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:59,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:11:59,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:11:59,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,512 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 22:11:59,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,545 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:11:59,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,565 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:11:59,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,582 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:59,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,613 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:11:59,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,628 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:59,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,657 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:59,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,689 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:11:59,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,704 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:59,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,713 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:11:59,718 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:11:59,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,732 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:11:59,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:11:59,779 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:11:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:11:59,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:11:59,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:11:59,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827184816] [2023-11-06 22:11:59,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827184816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:59,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:59,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:11:59,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982873232] [2023-11-06 22:11:59,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:59,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:11:59,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:11:59,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:11:59,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:12:00,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 624 [2023-11-06 22:12:00,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 118 transitions, 633 flow. Second operand has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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) [2023-11-06 22:12:00,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:00,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 624 [2023-11-06 22:12:00,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:03,471 INFO L124 PetriNetUnfolderBase]: 12242/16171 cut-off events. [2023-11-06 22:12:03,471 INFO L125 PetriNetUnfolderBase]: For 6653/7159 co-relation queries the response was YES. [2023-11-06 22:12:03,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39379 conditions, 16171 events. 12242/16171 cut-off events. For 6653/7159 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 85783 event pairs, 6391 based on Foata normal form. 402/10241 useless extension candidates. Maximal degree in co-relation 39354. Up to 15888 conditions per place. [2023-11-06 22:12:03,590 INFO L140 encePairwiseOnDemand]: 621/624 looper letters, 108 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2023-11-06 22:12:03,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 116 transitions, 847 flow [2023-11-06 22:12:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:03,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:03,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 838 transitions. [2023-11-06 22:12:03,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44764957264957267 [2023-11-06 22:12:03,594 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 838 transitions. [2023-11-06 22:12:03,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 838 transitions. [2023-11-06 22:12:03,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:03,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 838 transitions. [2023-11-06 22:12:03,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 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) [2023-11-06 22:12:03,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 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) [2023-11-06 22:12:03,602 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 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) [2023-11-06 22:12:03,602 INFO L175 Difference]: Start difference. First operand has 93 places, 118 transitions, 633 flow. Second operand 3 states and 838 transitions. [2023-11-06 22:12:03,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 116 transitions, 847 flow [2023-11-06 22:12:03,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 116 transitions, 829 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:12:03,615 INFO L231 Difference]: Finished difference. Result has 91 places, 116 transitions, 613 flow [2023-11-06 22:12:03,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=613, PETRI_PLACES=91, PETRI_TRANSITIONS=116} [2023-11-06 22:12:03,617 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 20 predicate places. [2023-11-06 22:12:03,617 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 116 transitions, 613 flow [2023-11-06 22:12:03,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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) [2023-11-06 22:12:03,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:03,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:03,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-06 22:12:03,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:03,838 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:12:03,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:03,839 INFO L85 PathProgramCache]: Analyzing trace with hash 52463964, now seen corresponding path program 1 times [2023-11-06 22:12:03,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:03,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576349394] [2023-11-06 22:12:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:03,840 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 [2023-11-06 22:12:03,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:03,841 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:12:03,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:12:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:03,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:12:03,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:03,997 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-06 22:12:03,997 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-11-06 22:12:04,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,033 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:12:04,033 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-06 22:12:04,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,044 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:12:04,045 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:12:04,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,073 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:12:04,074 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-06 22:12:04,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,083 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:12:04,083 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:12:04,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,092 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:12:04,092 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:12:04,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,107 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:12:04,107 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:12:04,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,141 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:12:04,141 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-06 22:12:04,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,153 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:12:04,154 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:12:04,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,190 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:12:04,191 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-06 22:12:04,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,244 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:12:04,244 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-06 22:12:04,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:04,278 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:12:04,278 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-06 22:12:04,306 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:12:04,306 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 22:12:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:12:04,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:04,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:04,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576349394] [2023-11-06 22:12:04,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576349394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:04,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:04,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:12:04,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329608155] [2023-11-06 22:12:04,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:04,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:12:04,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:04,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:12:04,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:12:04,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 624 [2023-11-06 22:12:04,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 116 transitions, 613 flow. Second operand has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 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) [2023-11-06 22:12:04,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:04,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 624 [2023-11-06 22:12:04,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:06,753 INFO L124 PetriNetUnfolderBase]: 11605/15292 cut-off events. [2023-11-06 22:12:06,753 INFO L125 PetriNetUnfolderBase]: For 6219/6690 co-relation queries the response was YES. [2023-11-06 22:12:06,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37173 conditions, 15292 events. 11605/15292 cut-off events. For 6219/6690 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 80252 event pairs, 6027 based on Foata normal form. 580/9796 useless extension candidates. Maximal degree in co-relation 37148. Up to 15009 conditions per place. [2023-11-06 22:12:06,874 INFO L140 encePairwiseOnDemand]: 621/624 looper letters, 106 selfloop transitions, 1 changer transitions 0/114 dead transitions. [2023-11-06 22:12:06,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 114 transitions, 823 flow [2023-11-06 22:12:06,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:06,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:06,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 833 transitions. [2023-11-06 22:12:06,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44497863247863245 [2023-11-06 22:12:06,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 833 transitions. [2023-11-06 22:12:06,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 833 transitions. [2023-11-06 22:12:06,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:06,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 833 transitions. [2023-11-06 22:12:06,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 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) [2023-11-06 22:12:06,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 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) [2023-11-06 22:12:06,884 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 624.0) internal successors, (2496), 4 states have internal predecessors, (2496), 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) [2023-11-06 22:12:06,884 INFO L175 Difference]: Start difference. First operand has 91 places, 116 transitions, 613 flow. Second operand 3 states and 833 transitions. [2023-11-06 22:12:06,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 114 transitions, 823 flow [2023-11-06 22:12:06,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 114 transitions, 822 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:12:06,898 INFO L231 Difference]: Finished difference. Result has 90 places, 114 transitions, 610 flow [2023-11-06 22:12:06,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=610, PETRI_PLACES=90, PETRI_TRANSITIONS=114} [2023-11-06 22:12:06,899 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 19 predicate places. [2023-11-06 22:12:06,899 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 114 transitions, 610 flow [2023-11-06 22:12:06,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 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) [2023-11-06 22:12:06,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:06,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:06,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:07,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:07,118 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:12:07,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:07,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1615356477, now seen corresponding path program 1 times [2023-11-06 22:12:07,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:07,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740873874] [2023-11-06 22:12:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:07,120 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 [2023-11-06 22:12:07,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:07,122 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:12:07,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-06 22:12:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:07,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:12:07,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:07,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:07,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:07,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:07,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:07,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740873874] [2023-11-06 22:12:07,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740873874] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:12:07,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:07,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:12:07,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924961824] [2023-11-06 22:12:07,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:12:07,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:12:07,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:07,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:12:07,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:12:08,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 624 [2023-11-06 22:12:08,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 114 transitions, 610 flow. Second operand has 12 states, 12 states have (on average 253.5) internal successors, (3042), 12 states have internal predecessors, (3042), 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) [2023-11-06 22:12:08,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:08,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 624 [2023-11-06 22:12:08,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:12,882 INFO L124 PetriNetUnfolderBase]: 9942/13237 cut-off events. [2023-11-06 22:12:12,882 INFO L125 PetriNetUnfolderBase]: For 5361/5361 co-relation queries the response was YES. [2023-11-06 22:12:12,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31544 conditions, 13237 events. 9942/13237 cut-off events. For 5361/5361 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 68449 event pairs, 4736 based on Foata normal form. 200/8313 useless extension candidates. Maximal degree in co-relation 31518. Up to 8826 conditions per place. [2023-11-06 22:12:12,977 INFO L140 encePairwiseOnDemand]: 614/624 looper letters, 179 selfloop transitions, 12 changer transitions 0/195 dead transitions. [2023-11-06 22:12:12,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 195 transitions, 1257 flow [2023-11-06 22:12:12,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:12:12,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:12:12,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2388 transitions. [2023-11-06 22:12:12,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252136752136752 [2023-11-06 22:12:12,985 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2388 transitions. [2023-11-06 22:12:12,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2388 transitions. [2023-11-06 22:12:12,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:12,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2388 transitions. [2023-11-06 22:12:12,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 265.3333333333333) internal successors, (2388), 9 states have internal predecessors, (2388), 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) [2023-11-06 22:12:12,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 624.0) internal successors, (6240), 10 states have internal predecessors, (6240), 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) [2023-11-06 22:12:13,000 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 624.0) internal successors, (6240), 10 states have internal predecessors, (6240), 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) [2023-11-06 22:12:13,000 INFO L175 Difference]: Start difference. First operand has 90 places, 114 transitions, 610 flow. Second operand 9 states and 2388 transitions. [2023-11-06 22:12:13,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 195 transitions, 1257 flow [2023-11-06 22:12:13,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 195 transitions, 1256 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:12:13,008 INFO L231 Difference]: Finished difference. Result has 98 places, 112 transitions, 642 flow [2023-11-06 22:12:13,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=642, PETRI_PLACES=98, PETRI_TRANSITIONS=112} [2023-11-06 22:12:13,009 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 27 predicate places. [2023-11-06 22:12:13,010 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 112 transitions, 642 flow [2023-11-06 22:12:13,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 253.5) internal successors, (3042), 12 states have internal predecessors, (3042), 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) [2023-11-06 22:12:13,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:13,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:13,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:13,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:13,211 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:12:13,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:13,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1615355227, now seen corresponding path program 1 times [2023-11-06 22:12:13,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:13,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972717599] [2023-11-06 22:12:13,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:13,212 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 [2023-11-06 22:12:13,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:13,214 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:12:13,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-06 22:12:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:13,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:12:13,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:13,475 INFO L351 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 [2023-11-06 22:12:13,543 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 [2023-11-06 22:12:13,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:12:13,758 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2023-11-06 22:12:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:12:13,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:13,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:13,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972717599] [2023-11-06 22:12:13,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972717599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:13,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:13,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:12:13,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457037248] [2023-11-06 22:12:13,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:13,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:12:13,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:13,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:12:13,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:12:19,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 624 [2023-11-06 22:12:19,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 112 transitions, 642 flow. Second operand has 7 states, 7 states have (on average 246.28571428571428) internal successors, (1724), 7 states have internal predecessors, (1724), 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) [2023-11-06 22:12:19,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:19,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 624 [2023-11-06 22:12:19,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:22,573 INFO L124 PetriNetUnfolderBase]: 10214/13478 cut-off events. [2023-11-06 22:12:22,573 INFO L125 PetriNetUnfolderBase]: For 6550/6550 co-relation queries the response was YES. [2023-11-06 22:12:22,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33165 conditions, 13478 events. 10214/13478 cut-off events. For 6550/6550 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 69880 event pairs, 4072 based on Foata normal form. 21/8143 useless extension candidates. Maximal degree in co-relation 33136. Up to 10623 conditions per place. [2023-11-06 22:12:22,692 INFO L140 encePairwiseOnDemand]: 616/624 looper letters, 88 selfloop transitions, 42 changer transitions 0/134 dead transitions. [2023-11-06 22:12:22,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 134 transitions, 969 flow [2023-11-06 22:12:22,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:12:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:12:22,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1532 transitions. [2023-11-06 22:12:22,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4091880341880342 [2023-11-06 22:12:22,697 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1532 transitions. [2023-11-06 22:12:22,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1532 transitions. [2023-11-06 22:12:22,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:22,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1532 transitions. [2023-11-06 22:12:22,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 255.33333333333334) internal successors, (1532), 6 states have internal predecessors, (1532), 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) [2023-11-06 22:12:22,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 624.0) internal successors, (4368), 7 states have internal predecessors, (4368), 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) [2023-11-06 22:12:22,705 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 624.0) internal successors, (4368), 7 states have internal predecessors, (4368), 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) [2023-11-06 22:12:22,705 INFO L175 Difference]: Start difference. First operand has 98 places, 112 transitions, 642 flow. Second operand 6 states and 1532 transitions. [2023-11-06 22:12:22,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 134 transitions, 969 flow [2023-11-06 22:12:22,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 134 transitions, 956 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-06 22:12:22,744 INFO L231 Difference]: Finished difference. Result has 102 places, 117 transitions, 770 flow [2023-11-06 22:12:22,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=770, PETRI_PLACES=102, PETRI_TRANSITIONS=117} [2023-11-06 22:12:22,745 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 31 predicate places. [2023-11-06 22:12:22,745 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 117 transitions, 770 flow [2023-11-06 22:12:22,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 246.28571428571428) internal successors, (1724), 7 states have internal predecessors, (1724), 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) [2023-11-06 22:12:22,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:22,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:22,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:22,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:22,947 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:12:22,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:22,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1626373914, now seen corresponding path program 1 times [2023-11-06 22:12:22,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:22,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037795610] [2023-11-06 22:12:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:22,948 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 [2023-11-06 22:12:22,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:22,949 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:12:22,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-06 22:12:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:23,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:12:23,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:23,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:23,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:23,418 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:23,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037795610] [2023-11-06 22:12:23,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037795610] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:12:23,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:23,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:12:23,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773268526] [2023-11-06 22:12:23,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:12:23,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:12:23,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:23,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:12:23,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:12:24,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 624 [2023-11-06 22:12:24,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 117 transitions, 770 flow. Second operand has 12 states, 12 states have (on average 251.5) internal successors, (3018), 12 states have internal predecessors, (3018), 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) [2023-11-06 22:12:24,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:24,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 624 [2023-11-06 22:12:24,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:27,309 INFO L124 PetriNetUnfolderBase]: 7341/9956 cut-off events. [2023-11-06 22:12:27,310 INFO L125 PetriNetUnfolderBase]: For 11732/12066 co-relation queries the response was YES. [2023-11-06 22:12:27,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27865 conditions, 9956 events. 7341/9956 cut-off events. For 11732/12066 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 50671 event pairs, 3853 based on Foata normal form. 234/6852 useless extension candidates. Maximal degree in co-relation 27834. Up to 8388 conditions per place. [2023-11-06 22:12:27,390 INFO L140 encePairwiseOnDemand]: 614/624 looper letters, 160 selfloop transitions, 18 changer transitions 0/184 dead transitions. [2023-11-06 22:12:27,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 184 transitions, 1455 flow [2023-11-06 22:12:27,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:12:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:12:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2344 transitions. [2023-11-06 22:12:27,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41737891737891736 [2023-11-06 22:12:27,398 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2344 transitions. [2023-11-06 22:12:27,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2344 transitions. [2023-11-06 22:12:27,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:27,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2344 transitions. [2023-11-06 22:12:27,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 260.44444444444446) internal successors, (2344), 9 states have internal predecessors, (2344), 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) [2023-11-06 22:12:27,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 624.0) internal successors, (6240), 10 states have internal predecessors, (6240), 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) [2023-11-06 22:12:27,408 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 624.0) internal successors, (6240), 10 states have internal predecessors, (6240), 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) [2023-11-06 22:12:27,408 INFO L175 Difference]: Start difference. First operand has 102 places, 117 transitions, 770 flow. Second operand 9 states and 2344 transitions. [2023-11-06 22:12:27,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 184 transitions, 1455 flow [2023-11-06 22:12:27,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 184 transitions, 1366 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:12:27,427 INFO L231 Difference]: Finished difference. Result has 109 places, 123 transitions, 814 flow [2023-11-06 22:12:27,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=814, PETRI_PLACES=109, PETRI_TRANSITIONS=123} [2023-11-06 22:12:27,427 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 38 predicate places. [2023-11-06 22:12:27,428 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 123 transitions, 814 flow [2023-11-06 22:12:27,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 251.5) internal successors, (3018), 12 states have internal predecessors, (3018), 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) [2023-11-06 22:12:27,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:27,428 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 1, 1, 1] [2023-11-06 22:12:27,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:27,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:27,629 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:12:27,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:27,629 INFO L85 PathProgramCache]: Analyzing trace with hash -412389612, now seen corresponding path program 1 times [2023-11-06 22:12:27,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:27,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689392674] [2023-11-06 22:12:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:27,630 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 [2023-11-06 22:12:27,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:27,631 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:12:27,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-06 22:12:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:27,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:12:27,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:27,791 INFO L351 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 [2023-11-06 22:12:28,169 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:28,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:12:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:12:30,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:30,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689392674] [2023-11-06 22:12:30,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689392674] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:12:30,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:12:30,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-11-06 22:12:30,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066151617] [2023-11-06 22:12:30,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:12:30,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:12:30,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:30,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:12:30,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:12:52,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 624 [2023-11-06 22:12:52,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 123 transitions, 814 flow. Second operand has 18 states, 18 states have (on average 253.05555555555554) internal successors, (4555), 18 states have internal predecessors, (4555), 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) [2023-11-06 22:12:52,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:52,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 624 [2023-11-06 22:12:52,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:57,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:12:59,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:13:01,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:13:03,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:13:05,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:13:07,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:13:09,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:13:16,715 INFO L124 PetriNetUnfolderBase]: 7451/9929 cut-off events. [2023-11-06 22:13:16,715 INFO L125 PetriNetUnfolderBase]: For 10190/10614 co-relation queries the response was YES. [2023-11-06 22:13:16,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28919 conditions, 9929 events. 7451/9929 cut-off events. For 10190/10614 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 50538 event pairs, 3888 based on Foata normal form. 361/6500 useless extension candidates. Maximal degree in co-relation 28885. Up to 9698 conditions per place. [2023-11-06 22:13:16,818 INFO L140 encePairwiseOnDemand]: 618/624 looper letters, 62 selfloop transitions, 80 changer transitions 0/150 dead transitions. [2023-11-06 22:13:16,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 150 transitions, 1386 flow [2023-11-06 22:13:16,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:13:16,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:13:16,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4634 transitions. [2023-11-06 22:13:16,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41257122507122507 [2023-11-06 22:13:16,825 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4634 transitions. [2023-11-06 22:13:16,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4634 transitions. [2023-11-06 22:13:16,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:16,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4634 transitions. [2023-11-06 22:13:16,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 257.44444444444446) internal successors, (4634), 18 states have internal predecessors, (4634), 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) [2023-11-06 22:13:16,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 624.0) internal successors, (11856), 19 states have internal predecessors, (11856), 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) [2023-11-06 22:13:16,842 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 624.0) internal successors, (11856), 19 states have internal predecessors, (11856), 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) [2023-11-06 22:13:16,843 INFO L175 Difference]: Start difference. First operand has 109 places, 123 transitions, 814 flow. Second operand 18 states and 4634 transitions. [2023-11-06 22:13:16,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 150 transitions, 1386 flow [2023-11-06 22:13:16,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 150 transitions, 1349 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-11-06 22:13:16,881 INFO L231 Difference]: Finished difference. Result has 132 places, 150 transitions, 1345 flow [2023-11-06 22:13:16,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1345, PETRI_PLACES=132, PETRI_TRANSITIONS=150} [2023-11-06 22:13:16,882 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 61 predicate places. [2023-11-06 22:13:16,883 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 150 transitions, 1345 flow [2023-11-06 22:13:16,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 253.05555555555554) internal successors, (4555), 18 states have internal predecessors, (4555), 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) [2023-11-06 22:13:16,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:16,884 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:16,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:17,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:13:17,090 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:13:17,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:17,090 INFO L85 PathProgramCache]: Analyzing trace with hash -393750791, now seen corresponding path program 2 times [2023-11-06 22:13:17,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:13:17,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729776675] [2023-11-06 22:13:17,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:13:17,090 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 [2023-11-06 22:13:17,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:13:17,091 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:13:17,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-06 22:13:17,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:13:17,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:13:17,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:13:17,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:17,241 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:13:17,247 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:13:17,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:13:17,285 INFO L351 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 [2023-11-06 22:13:17,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,294 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:13:17,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,305 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:17,312 INFO L351 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 [2023-11-06 22:13:17,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,322 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:13:17,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,334 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:17,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,358 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:13:17,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,370 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:17,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,394 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:13:17,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,432 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:13:17,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,458 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:13:17,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,472 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:17,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,488 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:17,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,512 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:13:17,521 INFO L351 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 [2023-11-06 22:13:17,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,532 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:13:17,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,544 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:17,553 INFO L351 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 [2023-11-06 22:13:17,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,565 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:13:17,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,578 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:17,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,595 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:17,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,618 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:13:17,628 INFO L351 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 [2023-11-06 22:13:17,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,640 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:13:17,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,653 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:17,662 INFO L351 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 [2023-11-06 22:13:17,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,674 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:13:17,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,686 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:17,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:17,740 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:13:17,765 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:13:17,766 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:13:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:13:17,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:13:17,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:13:17,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729776675] [2023-11-06 22:13:17,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729776675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:17,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:17,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:13:17,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449540811] [2023-11-06 22:13:17,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:17,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:13:17,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:13:17,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:13:17,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:13:20,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:13:21,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 624 [2023-11-06 22:13:21,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 150 transitions, 1345 flow. Second operand has 6 states, 6 states have (on average 245.5) internal successors, (1473), 6 states have internal predecessors, (1473), 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) [2023-11-06 22:13:21,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:21,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 624 [2023-11-06 22:13:21,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:24,384 INFO L124 PetriNetUnfolderBase]: 12395/16518 cut-off events. [2023-11-06 22:13:24,384 INFO L125 PetriNetUnfolderBase]: For 18629/19170 co-relation queries the response was YES. [2023-11-06 22:13:24,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47358 conditions, 16518 events. 12395/16518 cut-off events. For 18629/19170 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 86939 event pairs, 4041 based on Foata normal form. 370/10967 useless extension candidates. Maximal degree in co-relation 47315. Up to 10746 conditions per place. [2023-11-06 22:13:24,566 INFO L140 encePairwiseOnDemand]: 616/624 looper letters, 131 selfloop transitions, 55 changer transitions 0/191 dead transitions. [2023-11-06 22:13:24,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 191 transitions, 1942 flow [2023-11-06 22:13:24,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:13:24,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:13:24,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1531 transitions. [2023-11-06 22:13:24,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40892094017094016 [2023-11-06 22:13:24,570 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1531 transitions. [2023-11-06 22:13:24,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1531 transitions. [2023-11-06 22:13:24,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:24,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1531 transitions. [2023-11-06 22:13:24,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 255.16666666666666) internal successors, (1531), 6 states have internal predecessors, (1531), 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) [2023-11-06 22:13:24,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 624.0) internal successors, (4368), 7 states have internal predecessors, (4368), 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) [2023-11-06 22:13:24,577 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 624.0) internal successors, (4368), 7 states have internal predecessors, (4368), 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) [2023-11-06 22:13:24,577 INFO L175 Difference]: Start difference. First operand has 132 places, 150 transitions, 1345 flow. Second operand 6 states and 1531 transitions. [2023-11-06 22:13:24,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 191 transitions, 1942 flow [2023-11-06 22:13:24,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 191 transitions, 1762 flow, removed 55 selfloop flow, removed 6 redundant places. [2023-11-06 22:13:24,610 INFO L231 Difference]: Finished difference. Result has 132 places, 152 transitions, 1294 flow [2023-11-06 22:13:24,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1294, PETRI_PLACES=132, PETRI_TRANSITIONS=152} [2023-11-06 22:13:24,611 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 61 predicate places. [2023-11-06 22:13:24,611 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 152 transitions, 1294 flow [2023-11-06 22:13:24,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 245.5) internal successors, (1473), 6 states have internal predecessors, (1473), 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) [2023-11-06 22:13:24,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:24,612 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:24,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:24,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:13:24,813 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:13:24,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:24,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1460013822, now seen corresponding path program 2 times [2023-11-06 22:13:24,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:13:24,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886139302] [2023-11-06 22:13:24,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:13:24,814 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 [2023-11-06 22:13:24,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:13:24,815 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:13:24,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-06 22:13:24,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:13:24,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:13:24,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:13:24,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:24,947 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-06 22:13:24,967 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2023-11-06 22:13:24,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:24,986 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:25,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,010 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:13:25,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,043 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:13:25,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,070 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:13:25,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,081 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:25,094 INFO L351 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 [2023-11-06 22:13:25,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,105 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:13:25,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,117 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:25,126 INFO L351 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 [2023-11-06 22:13:25,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,142 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:13:25,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,155 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:25,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,169 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:25,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,193 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:13:25,203 INFO L351 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 [2023-11-06 22:13:25,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,215 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:13:25,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,228 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:25,237 INFO L351 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 [2023-11-06 22:13:25,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,248 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:13:25,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,260 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:25,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,274 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:25,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,295 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:13:25,305 INFO L351 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 [2023-11-06 22:13:25,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,316 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:13:25,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,328 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:25,337 INFO L351 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 [2023-11-06 22:13:25,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,349 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:13:25,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,362 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:25,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,378 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:13:25,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,405 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:13:25,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:25,513 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 22:13:25,525 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:13:25,525 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:13:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:13:25,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:13:25,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:13:25,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886139302] [2023-11-06 22:13:25,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886139302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:25,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:25,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:13:25,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872911437] [2023-11-06 22:13:25,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:25,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:13:25,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:13:25,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:13:25,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:13:27,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 624 [2023-11-06 22:13:27,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 152 transitions, 1294 flow. Second operand has 6 states, 6 states have (on average 245.16666666666666) internal successors, (1471), 6 states have internal predecessors, (1471), 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) [2023-11-06 22:13:27,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:27,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 624 [2023-11-06 22:13:27,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:13:31,617 INFO L124 PetriNetUnfolderBase]: 15558/20788 cut-off events. [2023-11-06 22:13:31,617 INFO L125 PetriNetUnfolderBase]: For 20566/21646 co-relation queries the response was YES. [2023-11-06 22:13:31,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60742 conditions, 20788 events. 15558/20788 cut-off events. For 20566/21646 co-relation queries the response was YES. Maximal size of possible extension queue 1037. Compared 114330 event pairs, 6216 based on Foata normal form. 1095/16280 useless extension candidates. Maximal degree in co-relation 60697. Up to 12595 conditions per place. [2023-11-06 22:13:31,877 INFO L140 encePairwiseOnDemand]: 617/624 looper letters, 120 selfloop transitions, 62 changer transitions 0/187 dead transitions. [2023-11-06 22:13:31,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 187 transitions, 1831 flow [2023-11-06 22:13:31,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:13:31,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:13:31,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1529 transitions. [2023-11-06 22:13:31,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40838675213675213 [2023-11-06 22:13:31,880 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1529 transitions. [2023-11-06 22:13:31,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1529 transitions. [2023-11-06 22:13:31,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:13:31,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1529 transitions. [2023-11-06 22:13:31,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 254.83333333333334) internal successors, (1529), 6 states have internal predecessors, (1529), 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) [2023-11-06 22:13:31,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 624.0) internal successors, (4368), 7 states have internal predecessors, (4368), 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) [2023-11-06 22:13:31,886 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 624.0) internal successors, (4368), 7 states have internal predecessors, (4368), 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) [2023-11-06 22:13:31,886 INFO L175 Difference]: Start difference. First operand has 132 places, 152 transitions, 1294 flow. Second operand 6 states and 1529 transitions. [2023-11-06 22:13:31,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 187 transitions, 1831 flow [2023-11-06 22:13:31,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 187 transitions, 1723 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:13:31,944 INFO L231 Difference]: Finished difference. Result has 134 places, 157 transitions, 1387 flow [2023-11-06 22:13:31,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=624, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1387, PETRI_PLACES=134, PETRI_TRANSITIONS=157} [2023-11-06 22:13:31,945 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 63 predicate places. [2023-11-06 22:13:31,945 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 157 transitions, 1387 flow [2023-11-06 22:13:31,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 245.16666666666666) internal successors, (1471), 6 states have internal predecessors, (1471), 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) [2023-11-06 22:13:31,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:13:31,946 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:31,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:13:32,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:13:32,146 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2023-11-06 22:13:32,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:32,147 INFO L85 PathProgramCache]: Analyzing trace with hash -404768228, now seen corresponding path program 2 times [2023-11-06 22:13:32,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:13:32,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363292844] [2023-11-06 22:13:32,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:13:32,147 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 [2023-11-06 22:13:32,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:13:32,148 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:13:32,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39757bd3-640b-4273-ba89-6c883c99b1a4/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-06 22:13:32,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:13:32,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:13:32,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:13:32,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:13:32,323 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:13:32,330 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2023-11-06 22:13:32,338 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-06 22:13:32,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:32,344 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:13:32,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:32,354 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:13:32,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:32,359 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:13:32,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:32,371 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:13:32,387 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-06 22:13:32,392 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-06 22:13:32,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:32,397 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:13:32,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:32,407 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:13:32,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:32,415 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:13:32,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:32,424 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:13:32,442 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-06 22:13:32,446 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-06 22:13:32,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:32,452 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:13:32,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:32,461 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:13:32,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:32,467 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:13:32,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:32,476 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:13:32,487 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-06 22:13:32,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:32,500 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:13:32,507 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-06 22:13:32,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:32,518 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:13:32,529 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-06 22:13:32,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:32,551 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:13:32,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:13:32,612 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:13:32,625 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 22:13:32,625 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 22:13:32,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:32,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:13:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:33,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:13:33,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363292844] [2023-11-06 22:13:33,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363292844] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:13:33,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:13:33,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-06 22:13:33,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048833246] [2023-11-06 22:13:33,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:13:33,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:13:33,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:13:33,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:13:33,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:13:46,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 624 [2023-11-06 22:13:46,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 157 transitions, 1387 flow. Second operand has 14 states, 14 states have (on average 241.42857142857142) internal successors, (3380), 14 states have internal predecessors, (3380), 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) [2023-11-06 22:13:46,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:13:46,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 624 [2023-11-06 22:13:46,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand