./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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_cdad1e37-8683-4a62-8e78-dae9b2886608/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 a4f33aa2cc1f38311ba2397f8e50d98656063732fb966533fd95353a255f95b1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:54:57,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:54:57,337 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:54:57,344 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:54:57,345 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:54:57,394 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:54:57,394 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:54:57,395 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:54:57,396 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:54:57,401 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:54:57,401 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:54:57,402 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:54:57,403 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:54:57,404 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:54:57,405 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:54:57,405 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:54:57,406 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:54:57,406 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:54:57,407 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:54:57,407 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:54:57,407 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:54:57,408 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:54:57,408 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:54:57,409 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:54:57,409 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:54:57,410 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:54:57,410 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:54:57,410 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:54:57,411 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:54:57,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:54:57,413 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:54:57,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:54:57,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:54:57,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:54:57,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:54:57,414 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:54:57,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:54:57,414 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:54:57,415 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:54:57,415 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:54:57,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:54:57,416 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_cdad1e37-8683-4a62-8e78-dae9b2886608/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4f33aa2cc1f38311ba2397f8e50d98656063732fb966533fd95353a255f95b1 [2023-11-24 21:54:57,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:54:57,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:54:57,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:54:57,701 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:54:57,701 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:54:57,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2023-11-24 21:55:00,961 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:55:01,245 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:55:01,246 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2023-11-24 21:55:01,258 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/data/f4eca5efb/2528fed98e1f445eb877c7250da4ba2c/FLAGe043d9376 [2023-11-24 21:55:01,275 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/data/f4eca5efb/2528fed98e1f445eb877c7250da4ba2c [2023-11-24 21:55:01,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:55:01,283 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:55:01,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:55:01,287 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:55:01,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:55:01,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:55:01" (1/1) ... [2023-11-24 21:55:01,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c7d84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:01, skipping insertion in model container [2023-11-24 21:55:01,294 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:55:01" (1/1) ... [2023-11-24 21:55:01,339 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:55:01,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:55:01,651 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 21:55:01,652 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6510a9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:01, skipping insertion in model container [2023-11-24 21:55:01,652 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:55:01,653 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:55:01,655 INFO L158 Benchmark]: Toolchain (without parser) took 370.82ms. Allocated memory is still 125.8MB. Free memory was 81.6MB in the beginning and 71.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 21:55:01,655 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:55:01,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.33ms. Allocated memory is still 125.8MB. Free memory was 81.6MB in the beginning and 71.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 21:55:01,658 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 366.33ms. Allocated memory is still 125.8MB. Free memory was 81.6MB in the beginning and 71.1MB 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: 170]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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_cdad1e37-8683-4a62-8e78-dae9b2886608/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 a4f33aa2cc1f38311ba2397f8e50d98656063732fb966533fd95353a255f95b1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:55:04,117 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:55:04,261 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:55:04,270 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:55:04,274 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:55:04,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:55:04,338 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:55:04,338 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:55:04,340 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:55:04,345 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:55:04,345 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:55:04,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:55:04,347 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:55:04,349 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:55:04,349 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:55:04,350 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:55:04,350 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:55:04,351 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:55:04,351 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:55:04,352 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:55:04,353 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:55:04,353 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:55:04,354 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:55:04,354 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:55:04,355 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:55:04,355 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:55:04,356 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:55:04,356 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:55:04,357 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:55:04,357 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:55:04,359 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:55:04,360 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:55:04,360 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:55:04,360 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:55:04,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:55:04,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:55:04,362 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:55:04,362 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:55:04,363 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:55:04,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:55:04,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:55:04,364 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:55:04,364 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:55:04,364 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:55:04,364 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_cdad1e37-8683-4a62-8e78-dae9b2886608/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4f33aa2cc1f38311ba2397f8e50d98656063732fb966533fd95353a255f95b1 [2023-11-24 21:55:04,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:55:04,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:55:04,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:55:04,811 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:55:04,814 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:55:04,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2023-11-24 21:55:08,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:55:08,550 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:55:08,550 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2023-11-24 21:55:08,560 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/data/d8821b81c/ac36b026a8084d1c9ff80bb291839aba/FLAGe1854f4b9 [2023-11-24 21:55:08,576 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/data/d8821b81c/ac36b026a8084d1c9ff80bb291839aba [2023-11-24 21:55:08,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:55:08,581 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:55:08,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:55:08,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:55:08,596 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:55:08,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:55:08" (1/1) ... [2023-11-24 21:55:08,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@581d4b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:08, skipping insertion in model container [2023-11-24 21:55:08,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:55:08" (1/1) ... [2023-11-24 21:55:08,648 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:55:08,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:55:08,992 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:55:09,003 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:55:09,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:55:09,068 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:55:09,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:55:09,143 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:55:09,143 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:55:09,151 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:55:09,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:09 WrapperNode [2023-11-24 21:55:09,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:55:09,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:55:09,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:55:09,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:55:09,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:09" (1/1) ... [2023-11-24 21:55:09,188 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:09" (1/1) ... [2023-11-24 21:55:09,246 INFO L138 Inliner]: procedures = 27, calls = 90, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 240 [2023-11-24 21:55:09,247 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:55:09,248 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:55:09,249 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:55:09,249 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:55:09,260 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:09" (1/1) ... [2023-11-24 21:55:09,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:09" (1/1) ... [2023-11-24 21:55:09,281 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:09" (1/1) ... [2023-11-24 21:55:09,315 INFO L175 MemorySlicer]: Split 13 memory accesses to 5 slices as follows [2, 2, 2, 5, 2]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-24 21:55:09,324 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:09" (1/1) ... [2023-11-24 21:55:09,324 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:09" (1/1) ... [2023-11-24 21:55:09,337 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:09" (1/1) ... [2023-11-24 21:55:09,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:09" (1/1) ... [2023-11-24 21:55:09,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:09" (1/1) ... [2023-11-24 21:55:09,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:09" (1/1) ... [2023-11-24 21:55:09,374 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:55:09,375 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:55:09,378 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:55:09,379 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:55:09,379 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:09" (1/1) ... [2023-11-24 21:55:09,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:55:09,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:55:09,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:55:09,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:55:09,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:55:09,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:55:09,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:55:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:55:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 21:55:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-24 21:55:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:55:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:55:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:55:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:55:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-24 21:55:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-24 21:55:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 21:55:09,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 21:55:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 21:55:09,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 21:55:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 21:55:09,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 21:55:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:55:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:55:09,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:55:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:55:09,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:55:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:55:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:55:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:55:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:55:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 21:55:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-24 21:55:09,522 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 21:55:09,690 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:55:09,692 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:55:10,360 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:55:10,793 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:55:10,793 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 21:55:10,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:55:10 BoogieIcfgContainer [2023-11-24 21:55:10,794 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:55:10,797 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:55:10,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:55:10,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:55:10,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:55:08" (1/3) ... [2023-11-24 21:55:10,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160d4972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:55:10, skipping insertion in model container [2023-11-24 21:55:10,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:09" (2/3) ... [2023-11-24 21:55:10,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160d4972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:55:10, skipping insertion in model container [2023-11-24 21:55:10,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:55:10" (3/3) ... [2023-11-24 21:55:10,807 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2023-11-24 21:55:10,827 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:55:10,828 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-24 21:55:10,828 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:55:10,910 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-24 21:55:10,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 80 transitions, 181 flow [2023-11-24 21:55:11,028 INFO L124 PetriNetUnfolderBase]: 1/77 cut-off events. [2023-11-24 21:55:11,028 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-24 21:55:11,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 77 events. 1/77 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 173 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-11-24 21:55:11,031 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 80 transitions, 181 flow [2023-11-24 21:55:11,035 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 76 transitions, 170 flow [2023-11-24 21:55:11,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:55:11,051 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;@363533f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:55:11,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-24 21:55:11,055 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:55:11,055 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-24 21:55:11,055 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:55:11,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:11,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:55:11,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-24 21:55:11,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:11,066 INFO L85 PathProgramCache]: Analyzing trace with hash 597218, now seen corresponding path program 1 times [2023-11-24 21:55:11,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:55:11,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028505200] [2023-11-24 21:55:11,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:11,079 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 21:55:11,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:55:11,088 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:11,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:11,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:55:11,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:55:11,343 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 21:55:11,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,365 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 21:55:11,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,397 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 21:55:11,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,410 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 21:55:11,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,439 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 21:55:11,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,469 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 21:55:11,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,483 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 21:55:11,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,506 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 21:55:11,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,543 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 21:55:11,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,557 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 21:55:11,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,569 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 21:55:11,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,578 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 21:55:11,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,591 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 21:55:11,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,598 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 21:55:11,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,605 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 21:55:11,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,614 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 21:55:11,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,631 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 21:55:11,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,641 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 21:55:11,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,655 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 21:55:11,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,670 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 21:55:11,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,680 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 21:55:11,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,685 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 21:55:11,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,695 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 21:55:11,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:11,701 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 21:55:11,710 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 21:55:11,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:55:11,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:55:11,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028505200] [2023-11-24 21:55:11,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028505200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:11,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:11,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:55:11,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741756113] [2023-11-24 21:55:11,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:11,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:55:11,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:55:11,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:55:11,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:55:11,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 80 [2023-11-24 21:55:11,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 21:55:11,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:11,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 80 [2023-11-24 21:55:11,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:12,909 INFO L124 PetriNetUnfolderBase]: 2839/5035 cut-off events. [2023-11-24 21:55:12,912 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2023-11-24 21:55:12,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9489 conditions, 5035 events. 2839/5035 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 36303 event pairs, 2838 based on Foata normal form. 1/3544 useless extension candidates. Maximal degree in co-relation 8625. Up to 4219 conditions per place. [2023-11-24 21:55:12,983 INFO L140 encePairwiseOnDemand]: 76/80 looper letters, 34 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-11-24 21:55:12,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 73 transitions, 236 flow [2023-11-24 21:55:12,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:55:12,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:55:12,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2023-11-24 21:55:12,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6708333333333333 [2023-11-24 21:55:13,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 161 transitions. [2023-11-24 21:55:13,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 161 transitions. [2023-11-24 21:55:13,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:13,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 161 transitions. [2023-11-24 21:55:13,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 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 21:55:13,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 21:55:13,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 21:55:13,016 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 170 flow. Second operand 3 states and 161 transitions. [2023-11-24 21:55:13,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 73 transitions, 236 flow [2023-11-24 21:55:13,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 73 transitions, 224 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-24 21:55:13,029 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 156 flow [2023-11-24 21:55:13,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2023-11-24 21:55:13,036 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -7 predicate places. [2023-11-24 21:55:13,036 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 156 flow [2023-11-24 21:55:13,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 21:55:13,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:13,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:55:13,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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)] Forceful destruction successful, exit code 0 [2023-11-24 21:55:13,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:13,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-24 21:55:13,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:13,242 INFO L85 PathProgramCache]: Analyzing trace with hash 597219, now seen corresponding path program 1 times [2023-11-24 21:55:13,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:55:13,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881743191] [2023-11-24 21:55:13,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:13,246 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 21:55:13,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:55:13,247 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:13,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:13,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:55:13,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:55:13,409 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 18 treesize of output 7 [2023-11-24 21:55:13,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,429 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 21:55:13,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,444 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 21:55:13,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,454 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 21:55:13,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,470 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 21:55:13,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,481 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 21:55:13,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,503 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 21:55:13,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,529 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 21:55:13,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,541 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 8 treesize of output 1 [2023-11-24 21:55:13,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,555 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 21:55:13,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,570 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 21:55:13,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,580 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 21:55:13,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,612 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 21:55:13,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,627 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 21:55:13,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,643 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 21:55:13,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,653 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 21:55:13,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,665 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 21:55:13,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,678 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 21:55:13,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,713 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 21:55:13,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,728 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 21:55:13,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,759 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 21:55:13,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,774 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 21:55:13,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,821 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 21:55:13,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:13,850 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 21:55:13,954 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 21:55:13,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:55:13,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:55:13,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881743191] [2023-11-24 21:55:13,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881743191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:13,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:13,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:55:13,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273649843] [2023-11-24 21:55:13,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:13,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:55:13,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:55:13,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:55:13,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:55:14,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 80 [2023-11-24 21:55:14,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 156 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 21:55:14,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:14,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 80 [2023-11-24 21:55:14,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:15,230 INFO L124 PetriNetUnfolderBase]: 2840/5038 cut-off events. [2023-11-24 21:55:15,230 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-11-24 21:55:15,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9342 conditions, 5038 events. 2840/5038 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 36325 event pairs, 2838 based on Foata normal form. 0/3546 useless extension candidates. Maximal degree in co-relation 9320. Up to 4224 conditions per place. [2023-11-24 21:55:15,284 INFO L140 encePairwiseOnDemand]: 75/80 looper letters, 36 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-11-24 21:55:15,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 244 flow [2023-11-24 21:55:15,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:55:15,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:55:15,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 205 transitions. [2023-11-24 21:55:15,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.640625 [2023-11-24 21:55:15,294 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 205 transitions. [2023-11-24 21:55:15,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 205 transitions. [2023-11-24 21:55:15,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:15,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 205 transitions. [2023-11-24 21:55:15,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 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 21:55:15,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 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 21:55:15,303 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 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 21:55:15,303 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 156 flow. Second operand 4 states and 205 transitions. [2023-11-24 21:55:15,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 244 flow [2023-11-24 21:55:15,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:55:15,309 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 179 flow [2023-11-24 21:55:15,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2023-11-24 21:55:15,310 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -4 predicate places. [2023-11-24 21:55:15,311 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 179 flow [2023-11-24 21:55:15,311 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 21:55:15,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:15,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:55:15,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:15,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:15,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-24 21:55:15,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:15,513 INFO L85 PathProgramCache]: Analyzing trace with hash 597256, now seen corresponding path program 1 times [2023-11-24 21:55:15,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:55:15,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204216996] [2023-11-24 21:55:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:15,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:55:15,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:55:15,515 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:15,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:15,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:55:15,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:55:15,675 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 21:55:15,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:55:15,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:55:15,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204216996] [2023-11-24 21:55:15,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204216996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:15,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:15,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:55:15,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490936745] [2023-11-24 21:55:15,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:15,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:55:15,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:55:15,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:55:15,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:55:15,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2023-11-24 21:55:15,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:15,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:15,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2023-11-24 21:55:15,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:16,690 INFO L124 PetriNetUnfolderBase]: 2839/5037 cut-off events. [2023-11-24 21:55:16,690 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-11-24 21:55:16,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9347 conditions, 5037 events. 2839/5037 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 36298 event pairs, 2838 based on Foata normal form. 1/3546 useless extension candidates. Maximal degree in co-relation 9331. Up to 4222 conditions per place. [2023-11-24 21:55:16,753 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 36 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-11-24 21:55:16,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 250 flow [2023-11-24 21:55:16,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:55:16,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:55:16,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2023-11-24 21:55:16,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2023-11-24 21:55:16,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 165 transitions. [2023-11-24 21:55:16,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 165 transitions. [2023-11-24 21:55:16,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:16,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 165 transitions. [2023-11-24 21:55:16,757 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 21:55:16,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 21:55:16,759 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 21:55:16,759 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 179 flow. Second operand 3 states and 165 transitions. [2023-11-24 21:55:16,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 250 flow [2023-11-24 21:55:16,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 75 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:55:16,763 INFO L231 Difference]: Finished difference. Result has 82 places, 75 transitions, 176 flow [2023-11-24 21:55:16,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=82, PETRI_TRANSITIONS=75} [2023-11-24 21:55:16,764 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -3 predicate places. [2023-11-24 21:55:16,764 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 75 transitions, 176 flow [2023-11-24 21:55:16,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:16,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:16,765 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-24 21:55:16,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:16,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:16,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-24 21:55:16,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:16,968 INFO L85 PathProgramCache]: Analyzing trace with hash 573946156, now seen corresponding path program 1 times [2023-11-24 21:55:16,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:55:16,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676612917] [2023-11-24 21:55:16,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:16,969 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 21:55:16,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:55:16,971 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:16,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:17,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:55:17,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:55:17,115 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 21:55:17,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,130 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 21:55:17,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,155 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 21:55:17,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,168 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 21:55:17,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,182 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 21:55:17,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,190 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 21:55:17,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,216 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 21:55:17,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,228 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 21:55:17,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,242 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 21:55:17,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,251 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 21:55:17,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,265 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 21:55:17,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,273 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 21:55:17,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,286 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 21:55:17,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,297 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 21:55:17,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,322 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 21:55:17,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,335 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 21:55:17,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,349 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 21:55:17,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,357 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 21:55:17,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,388 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 21:55:17,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,401 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 21:55:17,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,417 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 13 treesize of output 1 [2023-11-24 21:55:17,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,439 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 21:55:17,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,470 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 21:55:17,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:17,504 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 21:55:17,679 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 21:55:17,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:55:18,123 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 21:55:18,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:55:18,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676612917] [2023-11-24 21:55:18,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676612917] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:55:18,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:55:18,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-24 21:55:18,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014040297] [2023-11-24 21:55:18,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:55:18,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:55:18,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:55:18,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:55:18,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:55:19,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 80 [2023-11-24 21:55:19,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 176 flow. Second operand has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 0 states have call successors, (0), 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 21:55:19,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:19,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 80 [2023-11-24 21:55:19,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:21,193 INFO L124 PetriNetUnfolderBase]: 2842/5046 cut-off events. [2023-11-24 21:55:21,194 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-11-24 21:55:21,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9376 conditions, 5046 events. 2842/5046 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 36337 event pairs, 2838 based on Foata normal form. 0/3550 useless extension candidates. Maximal degree in co-relation 9359. Up to 4226 conditions per place. [2023-11-24 21:55:21,238 INFO L140 encePairwiseOnDemand]: 75/80 looper letters, 36 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2023-11-24 21:55:21,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 84 transitions, 308 flow [2023-11-24 21:55:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:55:21,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:55:21,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 461 transitions. [2023-11-24 21:55:21,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.57625 [2023-11-24 21:55:21,242 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 461 transitions. [2023-11-24 21:55:21,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 461 transitions. [2023-11-24 21:55:21,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:21,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 461 transitions. [2023-11-24 21:55:21,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 46.1) internal successors, (461), 10 states have internal predecessors, (461), 0 states have call successors, (0), 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 21:55:21,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 80.0) internal successors, (880), 11 states have internal predecessors, (880), 0 states have call successors, (0), 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 21:55:21,248 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 80.0) internal successors, (880), 11 states have internal predecessors, (880), 0 states have call successors, (0), 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 21:55:21,249 INFO L175 Difference]: Start difference. First operand has 82 places, 75 transitions, 176 flow. Second operand 10 states and 461 transitions. [2023-11-24 21:55:21,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 84 transitions, 308 flow [2023-11-24 21:55:21,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 84 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:55:21,257 INFO L231 Difference]: Finished difference. Result has 92 places, 84 transitions, 250 flow [2023-11-24 21:55:21,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=250, PETRI_PLACES=92, PETRI_TRANSITIONS=84} [2023-11-24 21:55:21,259 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 7 predicate places. [2023-11-24 21:55:21,260 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 84 transitions, 250 flow [2023-11-24 21:55:21,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 0 states have call successors, (0), 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 21:55:21,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:21,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:55:21,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:21,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:21,467 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-24 21:55:21,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:21,468 INFO L85 PathProgramCache]: Analyzing trace with hash 573946193, now seen corresponding path program 1 times [2023-11-24 21:55:21,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:55:21,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560221795] [2023-11-24 21:55:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:21,468 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 21:55:21,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:55:21,470 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:21,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:21,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:55:21,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:55:21,643 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-24 21:55:21,644 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 24 treesize of output 22 [2023-11-24 21:55:21,665 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:21,665 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 19 treesize of output 22 [2023-11-24 21:55:21,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:21,720 INFO L349 Elim1Store]: treesize reduction 60, result has 10.4 percent of original size [2023-11-24 21:55:21,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2023-11-24 21:55:21,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:21,757 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-24 21:55:21,757 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 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-24 21:55:21,785 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:21,786 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 19 treesize of output 22 [2023-11-24 21:55:21,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:21,818 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-24 21:55:21,818 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 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-24 21:55:22,118 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 21:55:22,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:55:22,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:55:22,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560221795] [2023-11-24 21:55:22,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560221795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:22,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:22,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:55:22,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971336427] [2023-11-24 21:55:22,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:22,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:55:22,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:55:22,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:55:22,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:55:22,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 80 [2023-11-24 21:55:22,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 84 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 21:55:22,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:22,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 80 [2023-11-24 21:55:22,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:23,476 INFO L124 PetriNetUnfolderBase]: 4362/7277 cut-off events. [2023-11-24 21:55:23,476 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-11-24 21:55:23,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13725 conditions, 7277 events. 4362/7277 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 52512 event pairs, 4358 based on Foata normal form. 0/5245 useless extension candidates. Maximal degree in co-relation 13691. Up to 6329 conditions per place. [2023-11-24 21:55:23,648 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 48 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2023-11-24 21:55:23,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 344 flow [2023-11-24 21:55:23,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:55:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:55:23,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2023-11-24 21:55:23,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2023-11-24 21:55:23,650 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 154 transitions. [2023-11-24 21:55:23,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 154 transitions. [2023-11-24 21:55:23,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:23,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 154 transitions. [2023-11-24 21:55:23,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 21:55:23,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 21:55:23,653 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 21:55:23,653 INFO L175 Difference]: Start difference. First operand has 92 places, 84 transitions, 250 flow. Second operand 3 states and 154 transitions. [2023-11-24 21:55:23,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 344 flow [2023-11-24 21:55:23,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 82 transitions, 316 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-24 21:55:23,657 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 220 flow [2023-11-24 21:55:23,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2023-11-24 21:55:23,658 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 4 predicate places. [2023-11-24 21:55:23,658 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 220 flow [2023-11-24 21:55:23,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 21:55:23,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:23,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:55:23,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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)] Forceful destruction successful, exit code 0 [2023-11-24 21:55:23,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:23,862 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-24 21:55:23,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:23,862 INFO L85 PathProgramCache]: Analyzing trace with hash 573946194, now seen corresponding path program 1 times [2023-11-24 21:55:23,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:55:23,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169888605] [2023-11-24 21:55:23,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:23,863 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 21:55:23,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:55:23,864 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:23,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:23,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-24 21:55:23,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:55:24,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:24,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:24,072 INFO L349 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2023-11-24 21:55:24,072 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 2 case distinctions, treesize of input 19 treesize of output 26 [2023-11-24 21:55:24,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:24,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-24 21:55:24,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:24,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:24,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:24,178 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 14 treesize of output 18 [2023-11-24 21:55:24,199 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-24 21:55:24,199 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 23 treesize of output 19 [2023-11-24 21:55:25,184 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 21:55:25,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:55:25,545 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 21:55:25,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:55:25,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169888605] [2023-11-24 21:55:25,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169888605] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:55:25,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:55:25,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-24 21:55:25,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874658198] [2023-11-24 21:55:25,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:55:25,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:55:25,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:55:25,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:55:25,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:55:26,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 80 [2023-11-24 21:55:26,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 220 flow. Second operand has 10 states, 10 states have (on average 39.0) internal successors, (390), 10 states have internal predecessors, (390), 0 states have call successors, (0), 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 21:55:26,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:26,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 80 [2023-11-24 21:55:26,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:29,868 INFO L124 PetriNetUnfolderBase]: 4362/7260 cut-off events. [2023-11-24 21:55:29,869 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-24 21:55:29,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13695 conditions, 7260 events. 4362/7260 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 52365 event pairs, 4358 based on Foata normal form. 0/5228 useless extension candidates. Maximal degree in co-relation 13683. Up to 6325 conditions per place. [2023-11-24 21:55:29,921 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 44 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2023-11-24 21:55:29,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 80 transitions, 314 flow [2023-11-24 21:55:29,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:55:29,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:55:29,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 273 transitions. [2023-11-24 21:55:29,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56875 [2023-11-24 21:55:29,924 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 273 transitions. [2023-11-24 21:55:29,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 273 transitions. [2023-11-24 21:55:29,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:29,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 273 transitions. [2023-11-24 21:55:29,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.5) internal successors, (273), 6 states have internal predecessors, (273), 0 states have call successors, (0), 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 21:55:29,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 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 21:55:29,927 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 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 21:55:29,927 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 220 flow. Second operand 6 states and 273 transitions. [2023-11-24 21:55:29,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 80 transitions, 314 flow [2023-11-24 21:55:29,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 80 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:55:29,931 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 225 flow [2023-11-24 21:55:29,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2023-11-24 21:55:29,932 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 6 predicate places. [2023-11-24 21:55:29,932 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 225 flow [2023-11-24 21:55:29,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 39.0) internal successors, (390), 10 states have internal predecessors, (390), 0 states have call successors, (0), 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 21:55:29,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:29,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:29,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:30,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:30,136 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-24 21:55:30,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:30,137 INFO L85 PathProgramCache]: Analyzing trace with hash 166847459, now seen corresponding path program 1 times [2023-11-24 21:55:30,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:55:30,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630002532] [2023-11-24 21:55:30,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:30,137 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 21:55:30,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:55:30,139 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:30,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:30,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:55:30,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:55:30,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,298 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 13 [2023-11-24 21:55:30,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,348 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-24 21:55:30,348 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 1 case distinctions, treesize of input 16 treesize of output 17 [2023-11-24 21:55:30,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-24 21:55:30,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,391 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 13 [2023-11-24 21:55:30,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,448 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-24 21:55:30,448 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 16 treesize of output 13 [2023-11-24 21:55:30,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,502 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-24 21:55:30,503 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 16 treesize of output 13 [2023-11-24 21:55:30,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-24 21:55:30,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,537 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 13 [2023-11-24 21:55:30,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,545 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 21:55:30,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,585 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 13 [2023-11-24 21:55:30,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-24 21:55:30,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,669 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-24 21:55:30,670 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 1 case distinctions, treesize of input 21 treesize of output 13 [2023-11-24 21:55:30,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:30,687 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 21:55:31,462 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 21:55:31,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:55:31,874 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 21:55:31,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:55:31,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630002532] [2023-11-24 21:55:31,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [630002532] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:55:31,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:55:31,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-24 21:55:31,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89950015] [2023-11-24 21:55:31,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:55:31,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:55:31,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:55:31,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:55:31,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:55:32,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 80 [2023-11-24 21:55:32,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 225 flow. Second operand has 10 states, 10 states have (on average 39.4) internal successors, (394), 10 states have internal predecessors, (394), 0 states have call successors, (0), 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 21:55:32,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:32,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 80 [2023-11-24 21:55:32,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:34,817 INFO L124 PetriNetUnfolderBase]: 2976/5080 cut-off events. [2023-11-24 21:55:34,817 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-24 21:55:34,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9637 conditions, 5080 events. 2976/5080 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 35448 event pairs, 2972 based on Foata normal form. 0/3717 useless extension candidates. Maximal degree in co-relation 9624. Up to 4442 conditions per place. [2023-11-24 21:55:34,867 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 44 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2023-11-24 21:55:34,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 78 transitions, 319 flow [2023-11-24 21:55:34,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:55:34,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:55:34,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 273 transitions. [2023-11-24 21:55:34,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56875 [2023-11-24 21:55:34,871 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 273 transitions. [2023-11-24 21:55:34,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 273 transitions. [2023-11-24 21:55:34,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:34,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 273 transitions. [2023-11-24 21:55:34,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 45.5) internal successors, (273), 6 states have internal predecessors, (273), 0 states have call successors, (0), 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 21:55:34,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 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 21:55:34,876 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 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 21:55:34,876 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 225 flow. Second operand 6 states and 273 transitions. [2023-11-24 21:55:34,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 78 transitions, 319 flow [2023-11-24 21:55:34,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 78 transitions, 311 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:55:34,881 INFO L231 Difference]: Finished difference. Result has 90 places, 78 transitions, 223 flow [2023-11-24 21:55:34,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2023-11-24 21:55:34,882 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 5 predicate places. [2023-11-24 21:55:34,882 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 223 flow [2023-11-24 21:55:34,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 39.4) internal successors, (394), 10 states have internal predecessors, (394), 0 states have call successors, (0), 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 21:55:34,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:34,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:34,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:35,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:35,086 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-24 21:55:35,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:35,087 INFO L85 PathProgramCache]: Analyzing trace with hash 166847458, now seen corresponding path program 1 times [2023-11-24 21:55:35,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:55:35,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989266809] [2023-11-24 21:55:35,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:35,088 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 21:55:35,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:55:35,091 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:35,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:35,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:55:35,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:55:35,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:35,276 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-24 21:55:35,277 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 1 case distinctions, treesize of input 29 treesize of output 22 [2023-11-24 21:55:35,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:35,310 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:35,310 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 24 treesize of output 22 [2023-11-24 21:55:35,340 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:35,341 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 1 case distinctions, treesize of input 17 treesize of output 22 [2023-11-24 21:55:35,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:35,372 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-24 21:55:35,373 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 24 treesize of output 22 [2023-11-24 21:55:35,403 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-24 21:55:35,403 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 24 treesize of output 22 [2023-11-24 21:55:35,424 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:35,424 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 19 treesize of output 22 [2023-11-24 21:55:35,460 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-24 21:55:35,460 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 22 treesize of output 22 [2023-11-24 21:55:35,482 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:35,483 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 1 case distinctions, treesize of input 17 treesize of output 22 [2023-11-24 21:55:35,845 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 21:55:35,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:55:35,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:55:35,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989266809] [2023-11-24 21:55:35,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989266809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:35,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:35,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:55:35,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355519280] [2023-11-24 21:55:35,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:35,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:55:35,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:55:35,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:55:35,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:55:35,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 80 [2023-11-24 21:55:35,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 78 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 21:55:35,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:35,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 80 [2023-11-24 21:55:35,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:36,625 INFO L124 PetriNetUnfolderBase]: 2976/5006 cut-off events. [2023-11-24 21:55:36,625 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-24 21:55:36,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9565 conditions, 5006 events. 2976/5006 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 34613 event pairs, 2972 based on Foata normal form. 0/3643 useless extension candidates. Maximal degree in co-relation 9552. Up to 4446 conditions per place. [2023-11-24 21:55:36,653 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 48 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2023-11-24 21:55:36,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 76 transitions, 317 flow [2023-11-24 21:55:36,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:55:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:55:36,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2023-11-24 21:55:36,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2023-11-24 21:55:36,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 154 transitions. [2023-11-24 21:55:36,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 154 transitions. [2023-11-24 21:55:36,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:36,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 154 transitions. [2023-11-24 21:55:36,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 21:55:36,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 21:55:36,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 21:55:36,658 INFO L175 Difference]: Start difference. First operand has 90 places, 78 transitions, 223 flow. Second operand 3 states and 154 transitions. [2023-11-24 21:55:36,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 76 transitions, 317 flow [2023-11-24 21:55:36,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 76 transitions, 309 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:55:36,661 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 213 flow [2023-11-24 21:55:36,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2023-11-24 21:55:36,662 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 1 predicate places. [2023-11-24 21:55:36,663 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 213 flow [2023-11-24 21:55:36,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 21:55:36,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:36,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:36,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:36,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:36,866 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-24 21:55:36,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:36,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1276074827, now seen corresponding path program 1 times [2023-11-24 21:55:36,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:55:36,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783875067] [2023-11-24 21:55:36,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:36,867 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 21:55:36,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:55:36,868 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:36,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:37,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 21:55:37,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:55:37,048 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:37,048 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-24 21:55:37,069 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:37,069 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-24 21:55:37,096 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:37,097 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 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-24 21:55:37,118 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:37,119 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-24 21:55:37,141 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:37,142 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 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-24 21:55:37,164 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:37,164 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-24 21:55:37,193 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:37,193 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 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-24 21:55:37,223 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:37,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2023-11-24 21:55:37,254 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:37,254 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 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-24 21:55:37,275 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:37,275 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-24 21:55:37,291 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:37,291 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-24 21:55:37,318 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 21:55:37,319 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 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-24 21:55:37,514 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 21:55:37,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:55:37,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:55:37,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783875067] [2023-11-24 21:55:37,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783875067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:37,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:37,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:55:37,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096113175] [2023-11-24 21:55:37,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:37,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:55:37,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:55:37,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:55:37,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:55:37,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 80 [2023-11-24 21:55:37,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 21:55:37,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:37,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 80 [2023-11-24 21:55:37,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:38,190 INFO L124 PetriNetUnfolderBase]: 2962/5053 cut-off events. [2023-11-24 21:55:38,190 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-24 21:55:38,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9589 conditions, 5053 events. 2962/5053 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 35381 event pairs, 2958 based on Foata normal form. 0/3725 useless extension candidates. Maximal degree in co-relation 9576. Up to 4425 conditions per place. [2023-11-24 21:55:38,221 INFO L140 encePairwiseOnDemand]: 77/80 looper letters, 48 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-11-24 21:55:38,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 74 transitions, 307 flow [2023-11-24 21:55:38,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:55:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:55:38,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2023-11-24 21:55:38,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2023-11-24 21:55:38,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 154 transitions. [2023-11-24 21:55:38,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 154 transitions. [2023-11-24 21:55:38,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:38,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 154 transitions. [2023-11-24 21:55:38,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 21:55:38,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 21:55:38,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 21:55:38,226 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 213 flow. Second operand 3 states and 154 transitions. [2023-11-24 21:55:38,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 74 transitions, 307 flow [2023-11-24 21:55:38,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 74 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:55:38,229 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 210 flow [2023-11-24 21:55:38,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2023-11-24 21:55:38,230 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 0 predicate places. [2023-11-24 21:55:38,230 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 210 flow [2023-11-24 21:55:38,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 21:55:38,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:38,231 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2023-11-24 21:55:38,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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)] Forceful destruction successful, exit code 0 [2023-11-24 21:55:38,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:38,434 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-24 21:55:38,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:38,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1696479367, now seen corresponding path program 2 times [2023-11-24 21:55:38,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:55:38,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894219646] [2023-11-24 21:55:38,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:55:38,435 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 21:55:38,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:55:38,436 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:38,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:38,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:55:38,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:55:38,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:55:38,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:55:38,586 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 21:55:38,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,598 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 21:55:38,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,610 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 21:55:38,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,633 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 21:55:38,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,642 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 8 treesize of output 1 [2023-11-24 21:55:38,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,652 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 21:55:38,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,667 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 21:55:38,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,675 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 21:55:38,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,687 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 21:55:38,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,719 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 21:55:38,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,729 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 21:55:38,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,737 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 21:55:38,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,754 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 21:55:38,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,771 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 21:55:38,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,791 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 21:55:38,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,817 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 21:55:38,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,846 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 21:55:38,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,856 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 21:55:38,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,879 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 21:55:38,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,888 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 21:55:38,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,895 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 21:55:38,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,905 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 21:55:38,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,915 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 21:55:38,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:38,921 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 21:55:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:55:39,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:55:40,258 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:55:40,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:55:40,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894219646] [2023-11-24 21:55:40,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894219646] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:55:40,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:55:40,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-24 21:55:40,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218352615] [2023-11-24 21:55:40,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:55:40,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 21:55:40,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:55:40,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 21:55:40,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-24 21:55:42,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 80 [2023-11-24 21:55:42,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 210 flow. Second operand has 14 states, 14 states have (on average 42.57142857142857) internal successors, (596), 14 states have internal predecessors, (596), 0 states have call successors, (0), 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 21:55:42,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:42,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 80 [2023-11-24 21:55:42,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:47,896 INFO L124 PetriNetUnfolderBase]: 2848/4869 cut-off events. [2023-11-24 21:55:47,896 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-11-24 21:55:47,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9256 conditions, 4869 events. 2848/4869 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 33995 event pairs, 2838 based on Foata normal form. 6/3572 useless extension candidates. Maximal degree in co-relation 9242. Up to 4232 conditions per place. [2023-11-24 21:55:47,924 INFO L140 encePairwiseOnDemand]: 75/80 looper letters, 36 selfloop transitions, 30 changer transitions 0/92 dead transitions. [2023-11-24 21:55:47,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 92 transitions, 426 flow [2023-11-24 21:55:47,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-24 21:55:47,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-24 21:55:47,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 974 transitions. [2023-11-24 21:55:47,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553409090909091 [2023-11-24 21:55:47,930 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 974 transitions. [2023-11-24 21:55:47,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 974 transitions. [2023-11-24 21:55:47,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:47,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 974 transitions. [2023-11-24 21:55:47,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 44.27272727272727) internal successors, (974), 22 states have internal predecessors, (974), 0 states have call successors, (0), 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 21:55:47,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 80.0) internal successors, (1840), 23 states have internal predecessors, (1840), 0 states have call successors, (0), 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 21:55:47,941 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 80.0) internal successors, (1840), 23 states have internal predecessors, (1840), 0 states have call successors, (0), 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 21:55:47,941 INFO L175 Difference]: Start difference. First operand has 85 places, 74 transitions, 210 flow. Second operand 22 states and 974 transitions. [2023-11-24 21:55:47,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 92 transitions, 426 flow [2023-11-24 21:55:47,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 92 transitions, 425 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:55:47,945 INFO L231 Difference]: Finished difference. Result has 111 places, 92 transitions, 383 flow [2023-11-24 21:55:47,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=383, PETRI_PLACES=111, PETRI_TRANSITIONS=92} [2023-11-24 21:55:47,946 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 26 predicate places. [2023-11-24 21:55:47,947 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 92 transitions, 383 flow [2023-11-24 21:55:47,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 42.57142857142857) internal successors, (596), 14 states have internal predecessors, (596), 0 states have call successors, (0), 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 21:55:47,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:47,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:47,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:48,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:48,150 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 32 more)] === [2023-11-24 21:55:48,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:48,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1276074828, now seen corresponding path program 1 times [2023-11-24 21:55:48,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:55:48,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945725036] [2023-11-24 21:55:48,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:48,152 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 21:55:48,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:55:48,153 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:48,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdad1e37-8683-4a62-8e78-dae9b2886608/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 21:55:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:48,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 21:55:48,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:55:48,339 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-24 21:55:48,339 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 1 case distinctions, treesize of input 11 treesize of output 17 [2023-11-24 21:55:48,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:48,376 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-24 21:55:48,377 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 11 treesize of output 13 [2023-11-24 21:55:48,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:48,418 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-24 21:55:48,419 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 16 treesize of output 13 [2023-11-24 21:55:48,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:48,463 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-24 21:55:48,464 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 16 treesize of output 13 [2023-11-24 21:55:48,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:48,494 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-24 21:55:48,494 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 11 treesize of output 13 [2023-11-24 21:55:48,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:48,524 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-24 21:55:48,525 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 11 treesize of output 13 [2023-11-24 21:55:48,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:48,588 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-24 21:55:48,588 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 1 case distinctions, treesize of input 21 treesize of output 13 [2023-11-24 21:55:48,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:48,634 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-24 21:55:48,635 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 16 treesize of output 13 [2023-11-24 21:55:48,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:48,681 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-24 21:55:48,681 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 16 treesize of output 13 [2023-11-24 21:55:48,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:48,727 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-24 21:55:48,727 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 16 treesize of output 13 [2023-11-24 21:55:48,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:48,754 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-24 21:55:48,755 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 11 treesize of output 13 [2023-11-24 21:55:48,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:48,782 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-24 21:55:48,783 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 11 treesize of output 13 [2023-11-24 21:55:49,687 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 21:55:49,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:55:50,098 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 21:55:50,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:55:50,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945725036] [2023-11-24 21:55:50,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945725036] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:55:50,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:55:50,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-24 21:55:50,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102862393] [2023-11-24 21:55:50,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:55:50,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:55:50,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:55:50,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:55:50,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90