./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:29:34,321 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:29:34,444 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:29:34,448 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:29:34,449 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:29:34,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:29:34,474 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:29:34,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:29:34,475 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:29:34,476 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:29:34,477 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:29:34,477 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:29:34,478 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:29:34,479 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:29:34,479 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:29:34,480 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:29:34,481 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:29:34,481 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:29:34,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:29:34,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:29:34,483 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:29:34,484 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:29:34,485 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:29:34,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:29:34,486 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:29:34,487 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:29:34,487 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:29:34,488 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:29:34,489 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:29:34,489 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:29:34,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:29:34,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:29:34,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:29:34,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:29:34,493 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:29:34,493 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:29:34,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:29:34,494 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:29:34,495 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:29:34,495 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:29:34,496 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:29:34,496 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_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe [2023-11-24 21:29:34,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:29:34,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:29:34,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:29:34,849 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:29:34,849 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:29:34,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2023-11-24 21:29:37,938 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:29:38,166 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:29:38,167 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2023-11-24 21:29:38,176 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/data/6d36869d6/6789a920e2f147028daa7baf2f24a44a/FLAG2d6fc70ea [2023-11-24 21:29:38,192 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/data/6d36869d6/6789a920e2f147028daa7baf2f24a44a [2023-11-24 21:29:38,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:29:38,201 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:29:38,204 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:29:38,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:29:38,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:29:38,211 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:29:38" (1/1) ... [2023-11-24 21:29:38,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c57ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:38, skipping insertion in model container [2023-11-24 21:29:38,212 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:29:38" (1/1) ... [2023-11-24 21:29:38,260 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:29:38,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:29:38,514 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) [2023-11-24 21:29:38,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1d0ac4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:38, skipping insertion in model container [2023-11-24 21:29:38,515 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:29:38,516 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:29:38,518 INFO L158 Benchmark]: Toolchain (without parser) took 315.74ms. Allocated memory is still 132.1MB. Free memory was 87.5MB in the beginning and 76.6MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 21:29:38,519 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 100.7MB. Free memory was 53.8MB in the beginning and 53.6MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:29:38,520 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.81ms. Allocated memory is still 132.1MB. Free memory was 87.0MB in the beginning and 76.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 21:29:38,521 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 100.7MB. Free memory was 53.8MB in the beginning and 53.6MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.81ms. Allocated memory is still 132.1MB. Free memory was 87.0MB in the beginning and 76.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 159]: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:29:41,041 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:29:41,167 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:29:41,173 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:29:41,174 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:29:41,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:29:41,201 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:29:41,202 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:29:41,203 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:29:41,203 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:29:41,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:29:41,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:29:41,205 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:29:41,206 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:29:41,206 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:29:41,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:29:41,207 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:29:41,208 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:29:41,208 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:29:41,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:29:41,209 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:29:41,209 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:29:41,210 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:29:41,210 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:29:41,211 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:29:41,211 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:29:41,211 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:29:41,212 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:29:41,212 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:29:41,212 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:29:41,213 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:29:41,213 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:29:41,214 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:29:41,214 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:29:41,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:29:41,214 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:29:41,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:29:41,215 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:29:41,215 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:29:41,215 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:29:41,216 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:29:41,216 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:29:41,216 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:29:41,216 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:29:41,216 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_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be394a9cdc866c1e1426a3fe296e99873bcf37ee5e7e1c9e487b239a3e0a8fbe [2023-11-24 21:29:41,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:29:41,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:29:41,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:29:41,690 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:29:41,691 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:29:41,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2023-11-24 21:29:44,947 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:29:45,247 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:29:45,247 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/sv-benchmarks/c/weaver/popl20-bad-ring.wvr.c [2023-11-24 21:29:45,256 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/data/70f102125/0b76f84c2f124bd0ae8c1aed86298ee3/FLAG2adb62cad [2023-11-24 21:29:45,272 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/data/70f102125/0b76f84c2f124bd0ae8c1aed86298ee3 [2023-11-24 21:29:45,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:29:45,276 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:29:45,277 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:29:45,278 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:29:45,283 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:29:45,284 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:29:45" (1/1) ... [2023-11-24 21:29:45,285 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a4873f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:45, skipping insertion in model container [2023-11-24 21:29:45,285 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:29:45" (1/1) ... [2023-11-24 21:29:45,314 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:29:45,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:29:45,595 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:29:45,617 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:29:45,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:29:45,679 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:29:45,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:29:45,761 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:29:45,762 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:29:45,770 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:29:45,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:45 WrapperNode [2023-11-24 21:29:45,770 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:29:45,772 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:29:45,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:29:45,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:29:45,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:45" (1/1) ... [2023-11-24 21:29:45,795 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:45" (1/1) ... [2023-11-24 21:29:45,853 INFO L138 Inliner]: procedures = 27, calls = 62, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 322 [2023-11-24 21:29:45,853 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:29:45,854 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:29:45,854 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:29:45,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:29:45,869 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:45" (1/1) ... [2023-11-24 21:29:45,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:45" (1/1) ... [2023-11-24 21:29:45,876 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:45" (1/1) ... [2023-11-24 21:29:45,901 INFO L175 MemorySlicer]: Split 18 memory accesses to 5 slices as follows [2, 10, 2, 2, 2]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 3, 1, 1, 1]. [2023-11-24 21:29:45,901 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:45" (1/1) ... [2023-11-24 21:29:45,902 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:45" (1/1) ... [2023-11-24 21:29:45,920 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:45" (1/1) ... [2023-11-24 21:29:45,927 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:45" (1/1) ... [2023-11-24 21:29:45,930 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:45" (1/1) ... [2023-11-24 21:29:45,934 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:45" (1/1) ... [2023-11-24 21:29:45,941 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:29:45,942 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:29:45,942 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:29:45,942 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:29:45,943 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:45" (1/1) ... [2023-11-24 21:29:45,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:29:45,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:29:45,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:29:46,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:29:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:29:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:29:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:29:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:29:46,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 21:29:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-24 21:29:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:29:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:29:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:29:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:29:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-24 21:29:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-24 21:29:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 21:29:46,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 21:29:46,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 21:29:46,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 21:29:46,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 21:29:46,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 21:29:46,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:29:46,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:29:46,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:29:46,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:29:46,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:29:46,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:29:46,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:29:46,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:29:46,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:29:46,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 21:29:46,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-24 21:29:46,052 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:29:46,293 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:29:46,296 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:29:47,309 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:29:48,040 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:29:48,040 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-24 21:29:48,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:29:48 BoogieIcfgContainer [2023-11-24 21:29:48,041 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:29:48,046 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:29:48,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:29:48,050 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:29:48,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:29:45" (1/3) ... [2023-11-24 21:29:48,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4beacbb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:29:48, skipping insertion in model container [2023-11-24 21:29:48,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:45" (2/3) ... [2023-11-24 21:29:48,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4beacbb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:29:48, skipping insertion in model container [2023-11-24 21:29:48,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:29:48" (3/3) ... [2023-11-24 21:29:48,056 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2023-11-24 21:29:48,078 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:29:48,079 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-11-24 21:29:48,079 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:29:48,222 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-24 21:29:48,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 93 transitions, 207 flow [2023-11-24 21:29:48,374 INFO L124 PetriNetUnfolderBase]: 8/90 cut-off events. [2023-11-24 21:29:48,374 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-24 21:29:48,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 90 events. 8/90 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 236 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-24 21:29:48,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 93 transitions, 207 flow [2023-11-24 21:29:48,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 89 transitions, 196 flow [2023-11-24 21:29:48,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:29:48,422 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;@50966481, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:29:48,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2023-11-24 21:29:48,429 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:29:48,429 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-24 21:29:48,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:29:48,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:29:48,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:29:48,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:29:48,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:48,441 INFO L85 PathProgramCache]: Analyzing trace with hash 962431, now seen corresponding path program 1 times [2023-11-24 21:29:48,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:29:48,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486248841] [2023-11-24 21:29:48,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:48,459 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 [2023-11-24 21:29:48,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:29:48,465 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:29:48,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:29:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:48,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:29:48,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:29:48,755 INFO L378 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 [2023-11-24 21:29:48,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:48,779 INFO L378 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 [2023-11-24 21:29:48,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:48,796 INFO L378 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 [2023-11-24 21:29:48,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:48,805 INFO L378 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 [2023-11-24 21:29:48,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:48,815 INFO L378 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 [2023-11-24 21:29:48,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:48,826 INFO L378 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 [2023-11-24 21:29:48,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:48,862 INFO L378 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 [2023-11-24 21:29:48,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:48,893 INFO L378 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 [2023-11-24 21:29:48,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:48,921 INFO L378 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 [2023-11-24 21:29:48,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:48,939 INFO L378 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 [2023-11-24 21:29:48,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:48,981 INFO L378 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 [2023-11-24 21:29:48,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:49,000 INFO L378 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 [2023-11-24 21:29:49,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:49,016 INFO L378 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 [2023-11-24 21:29:49,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:49,026 INFO L378 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 [2023-11-24 21:29:49,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:49,040 INFO L378 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 [2023-11-24 21:29:49,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:49,046 INFO L378 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 [2023-11-24 21:29:49,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:49,061 INFO L378 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 [2023-11-24 21:29:49,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:49,079 INFO L378 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 [2023-11-24 21:29:49,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:49,102 INFO L378 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 [2023-11-24 21:29:49,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:49,108 INFO L378 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 [2023-11-24 21:29:49,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:49,123 INFO L378 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 [2023-11-24 21:29:49,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:49,130 INFO L378 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 [2023-11-24 21:29:49,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:49,151 INFO L378 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 [2023-11-24 21:29:49,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:49,166 INFO L378 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 [2023-11-24 21:29:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:29:49,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:29:49,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:29:49,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486248841] [2023-11-24 21:29:49,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486248841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:49,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:49,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:29:49,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782409467] [2023-11-24 21:29:49,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:49,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:29:49,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:29:49,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:29:49,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:29:49,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 93 [2023-11-24 21:29:49,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 89 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2023-11-24 21:29:49,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:29:49,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 93 [2023-11-24 21:29:49,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:29:51,695 INFO L124 PetriNetUnfolderBase]: 5825/10341 cut-off events. [2023-11-24 21:29:51,695 INFO L125 PetriNetUnfolderBase]: For 394/394 co-relation queries the response was YES. [2023-11-24 21:29:51,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18585 conditions, 10341 events. 5825/10341 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 83664 event pairs, 5236 based on Foata normal form. 514/6338 useless extension candidates. Maximal degree in co-relation 18330. Up to 7878 conditions per place. [2023-11-24 21:29:51,830 INFO L140 encePairwiseOnDemand]: 85/93 looper letters, 47 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-11-24 21:29:51,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 82 transitions, 280 flow [2023-11-24 21:29:51,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:29:51,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:29:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2023-11-24 21:29:51,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5949820788530465 [2023-11-24 21:29:51,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 166 transitions. [2023-11-24 21:29:51,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 166 transitions. [2023-11-24 21:29:51,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:29:51,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 166 transitions. [2023-11-24 21:29:51,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2023-11-24 21:29:51,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-24 21:29:51,878 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-24 21:29:51,880 INFO L175 Difference]: Start difference. First operand has 91 places, 89 transitions, 196 flow. Second operand 3 states and 166 transitions. [2023-11-24 21:29:51,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 82 transitions, 280 flow [2023-11-24 21:29:51,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 82 transitions, 268 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-24 21:29:51,903 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 174 flow [2023-11-24 21:29:51,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2023-11-24 21:29:51,911 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -9 predicate places. [2023-11-24 21:29:51,911 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 174 flow [2023-11-24 21:29:51,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2023-11-24 21:29:51,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:29:51,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:29:51,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-24 21:29:52,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:29:52,115 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:29:52,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:52,116 INFO L85 PathProgramCache]: Analyzing trace with hash 962432, now seen corresponding path program 1 times [2023-11-24 21:29:52,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:29:52,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415490963] [2023-11-24 21:29:52,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:52,117 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 [2023-11-24 21:29:52,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:29:52,119 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:29:52,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:29:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:52,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:29:52,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:29:52,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-24 21:29:52,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,274 INFO L378 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 [2023-11-24 21:29:52,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,288 INFO L378 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 [2023-11-24 21:29:52,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,297 INFO L378 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 [2023-11-24 21:29:52,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,324 INFO L378 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 [2023-11-24 21:29:52,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,339 INFO L378 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 [2023-11-24 21:29:52,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,354 INFO L378 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 [2023-11-24 21:29:52,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,367 INFO L378 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 [2023-11-24 21:29:52,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,383 INFO L378 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 [2023-11-24 21:29:52,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,392 INFO L378 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 [2023-11-24 21:29:52,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,409 INFO L378 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 [2023-11-24 21:29:52,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,436 INFO L378 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 [2023-11-24 21:29:52,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,483 INFO L378 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 [2023-11-24 21:29:52,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,510 INFO L378 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 [2023-11-24 21:29:52,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,530 INFO L378 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 [2023-11-24 21:29:52,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,555 INFO L378 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 [2023-11-24 21:29:52,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,576 INFO L378 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 [2023-11-24 21:29:52,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,601 INFO L378 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 [2023-11-24 21:29:52,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,616 INFO L378 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 [2023-11-24 21:29:52,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,630 INFO L378 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 [2023-11-24 21:29:52,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,703 INFO L378 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 [2023-11-24 21:29:52,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,718 INFO L378 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 [2023-11-24 21:29:52,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,732 INFO L378 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 [2023-11-24 21:29:52,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:52,747 INFO L378 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 [2023-11-24 21:29:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:29:52,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:29:52,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:29:52,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415490963] [2023-11-24 21:29:52,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415490963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:52,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:52,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:29:52,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533025039] [2023-11-24 21:29:52,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:52,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:29:52,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:29:52,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:29:52,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:29:53,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 93 [2023-11-24 21:29:53,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2023-11-24 21:29:53,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:29:53,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 93 [2023-11-24 21:29:53,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:29:55,201 INFO L124 PetriNetUnfolderBase]: 5828/10350 cut-off events. [2023-11-24 21:29:55,201 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2023-11-24 21:29:55,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18385 conditions, 10350 events. 5828/10350 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 83728 event pairs, 5236 based on Foata normal form. 0/5829 useless extension candidates. Maximal degree in co-relation 18335. Up to 7891 conditions per place. [2023-11-24 21:29:55,287 INFO L140 encePairwiseOnDemand]: 80/93 looper letters, 51 selfloop transitions, 10 changer transitions 0/91 dead transitions. [2023-11-24 21:29:55,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 91 transitions, 316 flow [2023-11-24 21:29:55,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:29:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:29:55,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2023-11-24 21:29:55,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2023-11-24 21:29:55,291 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 212 transitions. [2023-11-24 21:29:55,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 212 transitions. [2023-11-24 21:29:55,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:29:55,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 212 transitions. [2023-11-24 21:29:55,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2023-11-24 21:29:55,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2023-11-24 21:29:55,295 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2023-11-24 21:29:55,295 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 174 flow. Second operand 4 states and 212 transitions. [2023-11-24 21:29:55,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 91 transitions, 316 flow [2023-11-24 21:29:55,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 91 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:29:55,299 INFO L231 Difference]: Finished difference. Result has 86 places, 91 transitions, 252 flow [2023-11-24 21:29:55,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=86, PETRI_TRANSITIONS=91} [2023-11-24 21:29:55,301 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2023-11-24 21:29:55,301 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 91 transitions, 252 flow [2023-11-24 21:29:55,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2023-11-24 21:29:55,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:29:55,301 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-24 21:29:55,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-24 21:29:55,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:29:55,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:29:55,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:55,505 INFO L85 PathProgramCache]: Analyzing trace with hash 924928375, now seen corresponding path program 1 times [2023-11-24 21:29:55,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:29:55,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145483824] [2023-11-24 21:29:55,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:55,506 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 [2023-11-24 21:29:55,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:29:55,508 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:29:55,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:29:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:55,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:29:55,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:29:55,662 INFO L378 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 [2023-11-24 21:29:55,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,674 INFO L378 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 [2023-11-24 21:29:55,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,689 INFO L378 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 [2023-11-24 21:29:55,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,697 INFO L378 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 [2023-11-24 21:29:55,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,719 INFO L378 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 [2023-11-24 21:29:55,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,732 INFO L378 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 [2023-11-24 21:29:55,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,748 INFO L378 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 [2023-11-24 21:29:55,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,757 INFO L378 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 [2023-11-24 21:29:55,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,769 INFO L378 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 [2023-11-24 21:29:55,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,781 INFO L378 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 [2023-11-24 21:29:55,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,806 INFO L378 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 [2023-11-24 21:29:55,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,818 INFO L378 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 [2023-11-24 21:29:55,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,836 INFO L378 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 [2023-11-24 21:29:55,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,860 INFO L378 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 [2023-11-24 21:29:55,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,875 INFO L378 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 [2023-11-24 21:29:55,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,886 INFO L378 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 [2023-11-24 21:29:55,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,899 INFO L378 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 [2023-11-24 21:29:55,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,912 INFO L378 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 [2023-11-24 21:29:55,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,945 INFO L378 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 [2023-11-24 21:29:55,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,958 INFO L378 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 [2023-11-24 21:29:55,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:55,987 INFO L378 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 [2023-11-24 21:29:56,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:56,021 INFO L378 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 [2023-11-24 21:29:56,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:56,037 INFO L378 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 [2023-11-24 21:29:56,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:29:56,058 INFO L378 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 [2023-11-24 21:29:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:29:56,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:29:56,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:29:56,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:29:56,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145483824] [2023-11-24 21:29:56,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145483824] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:29:56,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:29:56,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-24 21:29:56,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467992301] [2023-11-24 21:29:56,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:29:56,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:29:56,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:29:56,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:29:56,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:29:58,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 93 [2023-11-24 21:29:58,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 91 transitions, 252 flow. Second operand has 10 states, 10 states have (on average 38.0) internal successors, (380), 10 states have internal predecessors, (380), 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) [2023-11-24 21:29:58,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:29:58,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 93 [2023-11-24 21:29:58,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:03,352 INFO L124 PetriNetUnfolderBase]: 5837/10377 cut-off events. [2023-11-24 21:30:03,352 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-11-24 21:30:03,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18503 conditions, 10377 events. 5837/10377 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 83816 event pairs, 5236 based on Foata normal form. 0/5856 useless extension candidates. Maximal degree in co-relation 18349. Up to 7894 conditions per place. [2023-11-24 21:30:03,645 INFO L140 encePairwiseOnDemand]: 80/93 looper letters, 51 selfloop transitions, 37 changer transitions 0/118 dead transitions. [2023-11-24 21:30:03,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 118 transitions, 548 flow [2023-11-24 21:30:03,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:30:03,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:30:03,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 467 transitions. [2023-11-24 21:30:03,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021505376344086 [2023-11-24 21:30:03,651 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 467 transitions. [2023-11-24 21:30:03,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 467 transitions. [2023-11-24 21:30:03,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:03,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 467 transitions. [2023-11-24 21:30:03,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 46.7) internal successors, (467), 10 states have internal predecessors, (467), 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) [2023-11-24 21:30:03,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2023-11-24 21:30:03,660 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2023-11-24 21:30:03,660 INFO L175 Difference]: Start difference. First operand has 86 places, 91 transitions, 252 flow. Second operand 10 states and 467 transitions. [2023-11-24 21:30:03,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 118 transitions, 548 flow [2023-11-24 21:30:03,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 118 transitions, 548 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 21:30:03,665 INFO L231 Difference]: Finished difference. Result has 98 places, 118 transitions, 496 flow [2023-11-24 21:30:03,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=496, PETRI_PLACES=98, PETRI_TRANSITIONS=118} [2023-11-24 21:30:03,667 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 7 predicate places. [2023-11-24 21:30:03,667 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 118 transitions, 496 flow [2023-11-24 21:30:03,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 38.0) internal successors, (380), 10 states have internal predecessors, (380), 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) [2023-11-24 21:30:03,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:03,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:30:03,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:30:03,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:30:03,871 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:30:03,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash 924965047, now seen corresponding path program 1 times [2023-11-24 21:30:03,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:30:03,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573913972] [2023-11-24 21:30:03,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:03,873 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 [2023-11-24 21:30:03,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:30:03,875 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:30:03,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:30:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:04,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:30:04,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:30:04,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:04,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:04,155 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2023-11-24 21:30:04,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 29 [2023-11-24 21:30:04,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:04,280 INFO L349 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2023-11-24 21:30:04,280 INFO L378 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 4 case distinctions, treesize of input 42 treesize of output 37 [2023-11-24 21:30:04,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:04,364 INFO L378 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 13 [2023-11-24 21:30:04,426 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:30:04,426 INFO L378 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 [2023-11-24 21:30:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:30:04,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:30:04,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:30:04,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573913972] [2023-11-24 21:30:04,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573913972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:04,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:04,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:30:04,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199492090] [2023-11-24 21:30:04,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:04,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:30:04,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:30:04,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:30:04,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:30:04,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 93 [2023-11-24 21:30:04,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 118 transitions, 496 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2023-11-24 21:30:04,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:04,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 93 [2023-11-24 21:30:04,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:06,439 INFO L124 PetriNetUnfolderBase]: 5837/10051 cut-off events. [2023-11-24 21:30:06,439 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2023-11-24 21:30:06,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18240 conditions, 10051 events. 5837/10051 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 77697 event pairs, 5236 based on Foata normal form. 1054/6916 useless extension candidates. Maximal degree in co-relation 18151. Up to 7922 conditions per place. [2023-11-24 21:30:06,538 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 84 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2023-11-24 21:30:06,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 116 transitions, 662 flow [2023-11-24 21:30:06,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:06,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:06,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2023-11-24 21:30:06,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913978494623656 [2023-11-24 21:30:06,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 165 transitions. [2023-11-24 21:30:06,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 165 transitions. [2023-11-24 21:30:06,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:06,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 165 transitions. [2023-11-24 21:30:06,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2023-11-24 21:30:06,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-24 21:30:06,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-24 21:30:06,545 INFO L175 Difference]: Start difference. First operand has 98 places, 118 transitions, 496 flow. Second operand 3 states and 165 transitions. [2023-11-24 21:30:06,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 116 transitions, 662 flow [2023-11-24 21:30:06,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 116 transitions, 567 flow, removed 25 selfloop flow, removed 4 redundant places. [2023-11-24 21:30:06,555 INFO L231 Difference]: Finished difference. Result has 94 places, 116 transitions, 399 flow [2023-11-24 21:30:06,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=92, 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=399, PETRI_PLACES=94, PETRI_TRANSITIONS=116} [2023-11-24 21:30:06,557 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2023-11-24 21:30:06,558 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 116 transitions, 399 flow [2023-11-24 21:30:06,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2023-11-24 21:30:06,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:06,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:30:06,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:30:06,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:30:06,762 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:30:06,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:06,762 INFO L85 PathProgramCache]: Analyzing trace with hash 924965048, now seen corresponding path program 1 times [2023-11-24 21:30:06,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:30:06,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280953131] [2023-11-24 21:30:06,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:06,764 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 [2023-11-24 21:30:06,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:30:06,766 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:30:06,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:30:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:07,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 21:30:07,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:30:07,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,053 INFO L378 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 5 [2023-11-24 21:30:07,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-24 21:30:07,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,128 INFO L378 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 [2023-11-24 21:30:07,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,212 INFO L378 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 [2023-11-24 21:30:07,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,262 INFO L378 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 [2023-11-24 21:30:07,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,308 INFO L378 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 [2023-11-24 21:30:07,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,333 INFO L378 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 [2023-11-24 21:30:07,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,380 INFO L378 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 [2023-11-24 21:30:07,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:07,432 INFO L378 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 [2023-11-24 21:30:07,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:30:07,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:30:07,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:30:07,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280953131] [2023-11-24 21:30:07,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280953131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:07,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:07,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:30:07,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501237080] [2023-11-24 21:30:07,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:07,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:30:07,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:30:07,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:30:07,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:30:07,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 93 [2023-11-24 21:30:07,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 116 transitions, 399 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2023-11-24 21:30:07,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:07,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 93 [2023-11-24 21:30:07,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:09,499 INFO L124 PetriNetUnfolderBase]: 5837/9725 cut-off events. [2023-11-24 21:30:09,499 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-11-24 21:30:09,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17869 conditions, 9725 events. 5837/9725 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 71430 event pairs, 5236 based on Foata normal form. 1054/6914 useless extension candidates. Maximal degree in co-relation 17856. Up to 7922 conditions per place. [2023-11-24 21:30:09,605 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 84 selfloop transitions, 1 changer transitions 0/114 dead transitions. [2023-11-24 21:30:09,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 114 transitions, 565 flow [2023-11-24 21:30:09,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:09,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:09,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2023-11-24 21:30:09,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913978494623656 [2023-11-24 21:30:09,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 165 transitions. [2023-11-24 21:30:09,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 165 transitions. [2023-11-24 21:30:09,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:09,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 165 transitions. [2023-11-24 21:30:09,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2023-11-24 21:30:09,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-24 21:30:09,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-24 21:30:09,612 INFO L175 Difference]: Start difference. First operand has 94 places, 116 transitions, 399 flow. Second operand 3 states and 165 transitions. [2023-11-24 21:30:09,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 114 transitions, 565 flow [2023-11-24 21:30:09,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 114 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:09,619 INFO L231 Difference]: Finished difference. Result has 93 places, 114 transitions, 396 flow [2023-11-24 21:30:09,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=91, 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=396, PETRI_PLACES=93, PETRI_TRANSITIONS=114} [2023-11-24 21:30:09,620 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2023-11-24 21:30:09,621 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 114 transitions, 396 flow [2023-11-24 21:30:09,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2023-11-24 21:30:09,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:09,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:09,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-24 21:30:09,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:30:09,825 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:30:09,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:09,827 INFO L85 PathProgramCache]: Analyzing trace with hash -875465429, now seen corresponding path program 1 times [2023-11-24 21:30:09,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:30:09,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981177909] [2023-11-24 21:30:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:09,829 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 [2023-11-24 21:30:09,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:30:09,830 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:30:09,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:30:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:10,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:30:10,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:30:10,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:10,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:10,145 INFO L378 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 [2023-11-24 21:30:10,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:10,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2023-11-24 21:30:10,221 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:30:10,230 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:30:10,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:10,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:10,258 INFO L378 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 [2023-11-24 21:30:10,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:10,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:10,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:10,305 INFO L378 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 [2023-11-24 21:30:10,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:10,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:10,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:10,351 INFO L378 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 [2023-11-24 21:30:10,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:10,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:10,373 INFO L378 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 [2023-11-24 21:30:10,392 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:30:10,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:10,424 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:30:10,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:10,473 INFO L378 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 [2023-11-24 21:30:10,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:10,544 INFO L378 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 [2023-11-24 21:30:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:30:10,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:30:10,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:30:10,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981177909] [2023-11-24 21:30:10,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981177909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:10,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:10,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:30:10,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911885382] [2023-11-24 21:30:10,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:10,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:30:10,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:30:10,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:30:10,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:30:10,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 93 [2023-11-24 21:30:10,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 114 transitions, 396 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2023-11-24 21:30:10,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:10,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 93 [2023-11-24 21:30:10,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:12,422 INFO L124 PetriNetUnfolderBase]: 5837/9699 cut-off events. [2023-11-24 21:30:12,422 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-11-24 21:30:12,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17844 conditions, 9699 events. 5837/9699 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 71046 event pairs, 5236 based on Foata normal form. 64/5924 useless extension candidates. Maximal degree in co-relation 17830. Up to 7922 conditions per place. [2023-11-24 21:30:12,527 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 84 selfloop transitions, 1 changer transitions 0/112 dead transitions. [2023-11-24 21:30:12,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 112 transitions, 562 flow [2023-11-24 21:30:12,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:12,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:12,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2023-11-24 21:30:12,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913978494623656 [2023-11-24 21:30:12,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 165 transitions. [2023-11-24 21:30:12,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 165 transitions. [2023-11-24 21:30:12,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:12,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 165 transitions. [2023-11-24 21:30:12,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2023-11-24 21:30:12,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-24 21:30:12,533 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-24 21:30:12,533 INFO L175 Difference]: Start difference. First operand has 93 places, 114 transitions, 396 flow. Second operand 3 states and 165 transitions. [2023-11-24 21:30:12,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 112 transitions, 562 flow [2023-11-24 21:30:12,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 112 transitions, 561 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:12,539 INFO L231 Difference]: Finished difference. Result has 92 places, 112 transitions, 393 flow [2023-11-24 21:30:12,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=92, PETRI_TRANSITIONS=112} [2023-11-24 21:30:12,540 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 1 predicate places. [2023-11-24 21:30:12,540 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 112 transitions, 393 flow [2023-11-24 21:30:12,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2023-11-24 21:30:12,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:12,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:12,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:30:12,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:30:12,757 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:30:12,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:12,758 INFO L85 PathProgramCache]: Analyzing trace with hash -875465430, now seen corresponding path program 1 times [2023-11-24 21:30:12,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:30:12,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872133664] [2023-11-24 21:30:12,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:12,759 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 [2023-11-24 21:30:12,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:30:12,760 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:30:12,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:30:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:12,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:30:12,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:30:12,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:12,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:12,989 INFO L378 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 15 treesize of output 11 [2023-11-24 21:30:13,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,040 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:30:13,040 INFO L378 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 [2023-11-24 21:30:13,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,073 INFO L378 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 1 [2023-11-24 21:30:13,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,120 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:30:13,121 INFO L378 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 [2023-11-24 21:30:13,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,171 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:30:13,171 INFO L378 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 [2023-11-24 21:30:13,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,208 INFO L378 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 1 [2023-11-24 21:30:13,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,273 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:30:13,273 INFO L378 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 [2023-11-24 21:30:13,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,330 INFO L378 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 1 [2023-11-24 21:30:13,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:13,372 INFO L378 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 13 [2023-11-24 21:30:13,432 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:30:13,433 INFO L378 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 [2023-11-24 21:30:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:30:13,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:30:13,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:30:13,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872133664] [2023-11-24 21:30:13,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872133664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:13,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:13,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:30:13,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045271905] [2023-11-24 21:30:13,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:13,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:30:13,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:30:13,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:30:13,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:30:13,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 93 [2023-11-24 21:30:13,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 112 transitions, 393 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2023-11-24 21:30:13,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:13,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 93 [2023-11-24 21:30:13,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:15,152 INFO L124 PetriNetUnfolderBase]: 5837/9673 cut-off events. [2023-11-24 21:30:15,152 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-11-24 21:30:15,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17819 conditions, 9673 events. 5837/9673 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 70542 event pairs, 5236 based on Foata normal form. 64/5924 useless extension candidates. Maximal degree in co-relation 17804. Up to 7922 conditions per place. [2023-11-24 21:30:15,242 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 84 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2023-11-24 21:30:15,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 110 transitions, 559 flow [2023-11-24 21:30:15,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:15,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2023-11-24 21:30:15,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913978494623656 [2023-11-24 21:30:15,245 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 165 transitions. [2023-11-24 21:30:15,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 165 transitions. [2023-11-24 21:30:15,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:15,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 165 transitions. [2023-11-24 21:30:15,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2023-11-24 21:30:15,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-24 21:30:15,248 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-24 21:30:15,248 INFO L175 Difference]: Start difference. First operand has 92 places, 112 transitions, 393 flow. Second operand 3 states and 165 transitions. [2023-11-24 21:30:15,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 110 transitions, 559 flow [2023-11-24 21:30:15,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 110 transitions, 558 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:15,254 INFO L231 Difference]: Finished difference. Result has 91 places, 110 transitions, 390 flow [2023-11-24 21:30:15,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=390, PETRI_PLACES=91, PETRI_TRANSITIONS=110} [2023-11-24 21:30:15,255 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 0 predicate places. [2023-11-24 21:30:15,256 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 110 transitions, 390 flow [2023-11-24 21:30:15,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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) [2023-11-24 21:30:15,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:15,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:15,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:30:15,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:30:15,460 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:30:15,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:15,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1369558835, now seen corresponding path program 1 times [2023-11-24 21:30:15,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:30:15,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184214000] [2023-11-24 21:30:15,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:15,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:30:15,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:30:15,462 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:30:15,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:30:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:15,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:30:15,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:30:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:30:15,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:30:15,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:30:15,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184214000] [2023-11-24 21:30:15,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184214000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:15,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:15,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:30:15,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814215225] [2023-11-24 21:30:15,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:15,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:30:15,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:30:15,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:30:15,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:30:15,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 93 [2023-11-24 21:30:15,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 110 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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) [2023-11-24 21:30:15,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:15,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 93 [2023-11-24 21:30:15,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:17,567 INFO L124 PetriNetUnfolderBase]: 6045/10113 cut-off events. [2023-11-24 21:30:17,568 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2023-11-24 21:30:17,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18665 conditions, 10113 events. 6045/10113 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 73638 event pairs, 5423 based on Foata normal form. 144/6511 useless extension candidates. Maximal degree in co-relation 18649. Up to 7920 conditions per place. [2023-11-24 21:30:17,652 INFO L140 encePairwiseOnDemand]: 81/93 looper letters, 128 selfloop transitions, 3 changer transitions 1/157 dead transitions. [2023-11-24 21:30:17,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 157 transitions, 838 flow [2023-11-24 21:30:17,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:30:17,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:30:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-11-24 21:30:17,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6559139784946236 [2023-11-24 21:30:17,655 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 244 transitions. [2023-11-24 21:30:17,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 244 transitions. [2023-11-24 21:30:17,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:17,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 244 transitions. [2023-11-24 21:30:17,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:30:17,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2023-11-24 21:30:17,659 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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) [2023-11-24 21:30:17,659 INFO L175 Difference]: Start difference. First operand has 91 places, 110 transitions, 390 flow. Second operand 4 states and 244 transitions. [2023-11-24 21:30:17,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 157 transitions, 838 flow [2023-11-24 21:30:17,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 157 transitions, 837 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:17,666 INFO L231 Difference]: Finished difference. Result has 94 places, 110 transitions, 414 flow [2023-11-24 21:30:17,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=414, PETRI_PLACES=94, PETRI_TRANSITIONS=110} [2023-11-24 21:30:17,668 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2023-11-24 21:30:17,668 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 110 transitions, 414 flow [2023-11-24 21:30:17,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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) [2023-11-24 21:30:17,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:17,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:17,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:30:17,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:30:17,872 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:30:17,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:17,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1948215379, now seen corresponding path program 1 times [2023-11-24 21:30:17,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:30:17,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331706727] [2023-11-24 21:30:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:17,873 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 [2023-11-24 21:30:17,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:30:17,875 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:30:17,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:30:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:18,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 21:30:18,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:30:18,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:18,101 INFO L378 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 5 [2023-11-24 21:30:18,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:18,120 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:30:18,125 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:30:18,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:18,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:18,149 INFO L378 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 [2023-11-24 21:30:18,154 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:30:18,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:18,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:18,184 INFO L378 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 [2023-11-24 21:30:18,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:18,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:18,205 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:30:18,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:18,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:18,238 INFO L378 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 [2023-11-24 21:30:18,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:18,249 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:30:18,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:18,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:18,270 INFO L378 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 [2023-11-24 21:30:18,275 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 21:30:18,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:18,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:18,307 INFO L378 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 [2023-11-24 21:30:18,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:18,349 INFO L378 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 [2023-11-24 21:30:18,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:18,397 INFO L378 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 [2023-11-24 21:30:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:30:18,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:30:18,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:30:18,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331706727] [2023-11-24 21:30:18,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331706727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:18,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:18,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:30:18,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49785826] [2023-11-24 21:30:18,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:18,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:30:18,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:30:18,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:30:18,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:30:18,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 93 [2023-11-24 21:30:18,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 110 transitions, 414 flow. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 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) [2023-11-24 21:30:18,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:18,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 93 [2023-11-24 21:30:18,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:20,130 INFO L124 PetriNetUnfolderBase]: 6045/10077 cut-off events. [2023-11-24 21:30:20,130 INFO L125 PetriNetUnfolderBase]: For 723/723 co-relation queries the response was YES. [2023-11-24 21:30:20,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20532 conditions, 10077 events. 6045/10077 cut-off events. For 723/723 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 73399 event pairs, 5423 based on Foata normal form. 132/6415 useless extension candidates. Maximal degree in co-relation 20514. Up to 8265 conditions per place. [2023-11-24 21:30:20,218 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 84 selfloop transitions, 1 changer transitions 0/108 dead transitions. [2023-11-24 21:30:20,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 108 transitions, 580 flow [2023-11-24 21:30:20,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:20,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:20,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2023-11-24 21:30:20,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913978494623656 [2023-11-24 21:30:20,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 165 transitions. [2023-11-24 21:30:20,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 165 transitions. [2023-11-24 21:30:20,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:20,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 165 transitions. [2023-11-24 21:30:20,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2023-11-24 21:30:20,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-24 21:30:20,223 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-24 21:30:20,223 INFO L175 Difference]: Start difference. First operand has 94 places, 110 transitions, 414 flow. Second operand 3 states and 165 transitions. [2023-11-24 21:30:20,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 108 transitions, 580 flow [2023-11-24 21:30:20,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 108 transitions, 576 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:20,231 INFO L231 Difference]: Finished difference. Result has 93 places, 108 transitions, 408 flow [2023-11-24 21:30:20,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=93, PETRI_TRANSITIONS=108} [2023-11-24 21:30:20,232 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2023-11-24 21:30:20,232 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 108 transitions, 408 flow [2023-11-24 21:30:20,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 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) [2023-11-24 21:30:20,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:20,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:20,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-24 21:30:20,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:30:20,438 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:30:20,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:20,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1948215380, now seen corresponding path program 1 times [2023-11-24 21:30:20,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:30:20,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943895358] [2023-11-24 21:30:20,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:20,439 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 [2023-11-24 21:30:20,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:30:20,440 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:30:20,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:30:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:20,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:30:20,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:30:20,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:20,686 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-24 21:30:20,686 INFO L378 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 [2023-11-24 21:30:20,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:20,711 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:30:20,711 INFO L378 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 [2023-11-24 21:30:20,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:20,725 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:30:20,725 INFO L378 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 [2023-11-24 21:30:20,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:20,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:20,769 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:30:20,770 INFO L378 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 [2023-11-24 21:30:20,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:20,785 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:30:20,785 INFO L378 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 [2023-11-24 21:30:20,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:20,800 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:30:20,800 INFO L378 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 [2023-11-24 21:30:20,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:20,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:20,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:20,866 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:30:20,866 INFO L378 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 [2023-11-24 21:30:20,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:20,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:20,907 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:30:20,907 INFO L378 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 [2023-11-24 21:30:20,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:20,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:20,959 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:30:20,959 INFO L378 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 [2023-11-24 21:30:20,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:20,978 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:30:20,979 INFO L378 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 [2023-11-24 21:30:20,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:20,995 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:30:20,995 INFO L378 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 [2023-11-24 21:30:21,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:21,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:21,035 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-24 21:30:21,035 INFO L378 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 [2023-11-24 21:30:21,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:21,065 INFO L378 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 13 [2023-11-24 21:30:21,120 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:30:21,121 INFO L378 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 [2023-11-24 21:30:21,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:30:21,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:30:21,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:30:21,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943895358] [2023-11-24 21:30:21,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943895358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:21,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:21,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:30:21,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247765936] [2023-11-24 21:30:21,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:21,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:30:21,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:30:21,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:30:21,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:30:21,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 93 [2023-11-24 21:30:21,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 108 transitions, 408 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2023-11-24 21:30:21,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:21,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 93 [2023-11-24 21:30:21,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:22,876 INFO L124 PetriNetUnfolderBase]: 6045/10059 cut-off events. [2023-11-24 21:30:22,876 INFO L125 PetriNetUnfolderBase]: For 732/768 co-relation queries the response was YES. [2023-11-24 21:30:22,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20513 conditions, 10059 events. 6045/10059 cut-off events. For 732/768 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 73415 event pairs, 5423 based on Foata normal form. 132/6403 useless extension candidates. Maximal degree in co-relation 20494. Up to 8265 conditions per place. [2023-11-24 21:30:22,957 INFO L140 encePairwiseOnDemand]: 90/93 looper letters, 84 selfloop transitions, 1 changer transitions 0/106 dead transitions. [2023-11-24 21:30:22,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 106 transitions, 574 flow [2023-11-24 21:30:22,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:30:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:30:22,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2023-11-24 21:30:22,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913978494623656 [2023-11-24 21:30:22,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 165 transitions. [2023-11-24 21:30:22,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 165 transitions. [2023-11-24 21:30:22,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:22,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 165 transitions. [2023-11-24 21:30:22,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2023-11-24 21:30:22,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-24 21:30:22,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2023-11-24 21:30:22,962 INFO L175 Difference]: Start difference. First operand has 93 places, 108 transitions, 408 flow. Second operand 3 states and 165 transitions. [2023-11-24 21:30:22,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 106 transitions, 574 flow [2023-11-24 21:30:22,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 106 transitions, 573 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:22,969 INFO L231 Difference]: Finished difference. Result has 92 places, 106 transitions, 405 flow [2023-11-24 21:30:22,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=92, PETRI_TRANSITIONS=106} [2023-11-24 21:30:22,970 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 1 predicate places. [2023-11-24 21:30:22,970 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 106 transitions, 405 flow [2023-11-24 21:30:22,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2023-11-24 21:30:22,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:22,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:22,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:30:23,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:30:23,176 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:30:23,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:23,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1937585540, now seen corresponding path program 1 times [2023-11-24 21:30:23,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:30:23,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856310072] [2023-11-24 21:30:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:23,177 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 [2023-11-24 21:30:23,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:30:23,178 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:30:23,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:30:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:23,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 21:30:23,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:30:23,373 INFO L378 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 [2023-11-24 21:30:23,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,396 INFO L378 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 [2023-11-24 21:30:23,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,404 INFO L378 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 [2023-11-24 21:30:23,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,409 INFO L378 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 [2023-11-24 21:30:23,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,417 INFO L378 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 [2023-11-24 21:30:23,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,422 INFO L378 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 [2023-11-24 21:30:23,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,435 INFO L378 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 [2023-11-24 21:30:23,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,450 INFO L378 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 [2023-11-24 21:30:23,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,475 INFO L378 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 [2023-11-24 21:30:23,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,490 INFO L378 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 [2023-11-24 21:30:23,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,506 INFO L378 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 [2023-11-24 21:30:23,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,514 INFO L378 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 [2023-11-24 21:30:23,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,524 INFO L378 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 [2023-11-24 21:30:23,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,529 INFO L378 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 [2023-11-24 21:30:23,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,537 INFO L378 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 [2023-11-24 21:30:23,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,541 INFO L378 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 [2023-11-24 21:30:23,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,565 INFO L378 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 [2023-11-24 21:30:23,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,573 INFO L378 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 [2023-11-24 21:30:23,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,584 INFO L378 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 [2023-11-24 21:30:23,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,601 INFO L378 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 [2023-11-24 21:30:23,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,611 INFO L378 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 [2023-11-24 21:30:23,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,627 INFO L378 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 [2023-11-24 21:30:23,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,637 INFO L378 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 [2023-11-24 21:30:23,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:23,642 INFO L378 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 [2023-11-24 21:30:23,684 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-24 21:30:23,685 INFO L378 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 [2023-11-24 21:30:23,714 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:30:23,714 INFO L378 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 [2023-11-24 21:30:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:30:23,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:30:23,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:30:23,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856310072] [2023-11-24 21:30:23,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856310072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:30:23,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:30:23,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:30:23,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033618361] [2023-11-24 21:30:23,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:30:23,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:30:23,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:30:23,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:30:23,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:30:23,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 93 [2023-11-24 21:30:23,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 106 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2023-11-24 21:30:23,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:30:23,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 93 [2023-11-24 21:30:23,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:30:24,947 INFO L124 PetriNetUnfolderBase]: 4618/7733 cut-off events. [2023-11-24 21:30:24,947 INFO L125 PetriNetUnfolderBase]: For 649/667 co-relation queries the response was YES. [2023-11-24 21:30:24,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15427 conditions, 7733 events. 4618/7733 cut-off events. For 649/667 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 53533 event pairs, 4099 based on Foata normal form. 0/5135 useless extension candidates. Maximal degree in co-relation 15407. Up to 6262 conditions per place. [2023-11-24 21:30:24,985 INFO L140 encePairwiseOnDemand]: 87/93 looper letters, 71 selfloop transitions, 11 changer transitions 0/103 dead transitions. [2023-11-24 21:30:24,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 103 transitions, 557 flow [2023-11-24 21:30:24,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:30:24,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:30:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 234 transitions. [2023-11-24 21:30:24,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032258064516129 [2023-11-24 21:30:24,987 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 234 transitions. [2023-11-24 21:30:24,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 234 transitions. [2023-11-24 21:30:24,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:30:24,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 234 transitions. [2023-11-24 21:30:24,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 46.8) internal successors, (234), 5 states have internal predecessors, (234), 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) [2023-11-24 21:30:24,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 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) [2023-11-24 21:30:24,990 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 93.0) internal successors, (558), 6 states have internal predecessors, (558), 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) [2023-11-24 21:30:24,990 INFO L175 Difference]: Start difference. First operand has 92 places, 106 transitions, 405 flow. Second operand 5 states and 234 transitions. [2023-11-24 21:30:24,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 103 transitions, 557 flow [2023-11-24 21:30:24,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 103 transitions, 556 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:30:24,995 INFO L231 Difference]: Finished difference. Result has 92 places, 103 transitions, 414 flow [2023-11-24 21:30:24,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=414, PETRI_PLACES=92, PETRI_TRANSITIONS=103} [2023-11-24 21:30:24,996 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 1 predicate places. [2023-11-24 21:30:24,996 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 103 transitions, 414 flow [2023-11-24 21:30:24,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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) [2023-11-24 21:30:24,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:30:24,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:30:25,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:30:25,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:30:25,200 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-24 21:30:25,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:30:25,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1937585541, now seen corresponding path program 1 times [2023-11-24 21:30:25,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:30:25,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070550469] [2023-11-24 21:30:25,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:30:25,201 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 [2023-11-24 21:30:25,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:30:25,202 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:30:25,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_785d750d-2630-4f24-b2cd-ea3c5b32741f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:30:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:30:25,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-24 21:30:25,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:30:25,432 INFO L378 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 [2023-11-24 21:30:25,438 INFO L378 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 [2023-11-24 21:30:25,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,470 INFO L378 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 [2023-11-24 21:30:25,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-24 21:30:25,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,491 INFO L378 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 [2023-11-24 21:30:25,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,509 INFO L378 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 [2023-11-24 21:30:25,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-24 21:30:25,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,534 INFO L378 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 [2023-11-24 21:30:25,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,546 INFO L378 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 [2023-11-24 21:30:25,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,576 INFO L378 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 [2023-11-24 21:30:25,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,589 INFO L378 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 [2023-11-24 21:30:25,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,628 INFO L378 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 [2023-11-24 21:30:25,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,654 INFO L378 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 [2023-11-24 21:30:25,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,680 INFO L378 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 [2023-11-24 21:30:25,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,693 INFO L378 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 [2023-11-24 21:30:25,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,711 INFO L378 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 [2023-11-24 21:30:25,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,735 INFO L378 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 [2023-11-24 21:30:25,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-24 21:30:25,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,758 INFO L378 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 [2023-11-24 21:30:25,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,771 INFO L378 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 [2023-11-24 21:30:25,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-24 21:30:25,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,794 INFO L378 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 [2023-11-24 21:30:25,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,808 INFO L378 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 [2023-11-24 21:30:25,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,827 INFO L378 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 [2023-11-24 21:30:25,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,859 INFO L378 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 [2023-11-24 21:30:25,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-24 21:30:25,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,882 INFO L378 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 [2023-11-24 21:30:25,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,895 INFO L378 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 [2023-11-24 21:30:25,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-24 21:30:25,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,918 INFO L378 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 [2023-11-24 21:30:25,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:25,934 INFO L378 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 [2023-11-24 21:30:26,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:26,134 INFO L378 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 [2023-11-24 21:30:26,167 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-24 21:30:26,167 INFO L378 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 [2023-11-24 21:30:26,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:30:26,235 INFO L378 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 [2023-11-24 21:30:26,252 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 21:30:26,252 INFO L378 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 [2023-11-24 21:30:26,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:30:26,351 INFO L327 TraceCheckSpWp]: Computing backward predicates...