./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c328ca6a6071aea6db12d1e311bd2e5e22fce6c700c884e61df52925e139f834 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:04:22,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:04:22,409 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:04:22,419 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:04:22,420 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:04:22,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:04:22,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:04:22,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:04:22,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:04:22,479 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:04:22,481 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:04:22,481 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:04:22,482 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:04:22,484 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:04:22,485 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:04:22,485 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:04:22,486 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:04:22,486 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:04:22,487 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:04:22,487 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:04:22,488 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:04:22,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:04:22,489 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:04:22,490 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:04:22,490 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:04:22,491 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:04:22,492 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:04:22,492 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:04:22,493 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:04:22,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:22,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:04:22,496 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:04:22,496 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:04:22,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:04:22,497 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:04:22,497 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:04:22,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:04:22,497 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:04:22,498 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_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c328ca6a6071aea6db12d1e311bd2e5e22fce6c700c884e61df52925e139f834 [2023-11-06 22:04:22,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:04:22,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:04:22,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:04:22,998 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:04:22,999 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:04:23,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2023-11-06 22:04:26,626 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:04:26,925 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:04:26,926 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2023-11-06 22:04:26,945 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/data/9a73d9cdc/9d4202a4457e4269b3d42ca4b3349d2c/FLAGbd684ed14 [2023-11-06 22:04:26,992 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/data/9a73d9cdc/9d4202a4457e4269b3d42ca4b3349d2c [2023-11-06 22:04:26,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:04:27,014 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:04:27,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:27,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:04:27,024 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:04:27,025 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:26" (1/1) ... [2023-11-06 22:04:27,026 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6302120b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:27, skipping insertion in model container [2023-11-06 22:04:27,027 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:26" (1/1) ... [2023-11-06 22:04:27,077 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:04:27,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:27,434 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-06 22:04:27,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@338a9aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:27, skipping insertion in model container [2023-11-06 22:04:27,435 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:27,436 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 22:04:27,439 INFO L158 Benchmark]: Toolchain (without parser) took 423.86ms. Allocated memory is still 184.5MB. Free memory was 156.4MB in the beginning and 145.6MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:04:27,440 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 130.0MB. Free memory is still 97.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:04:27,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 420.80ms. Allocated memory is still 184.5MB. Free memory was 156.1MB in the beginning and 145.6MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:04:27,444 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 130.0MB. Free memory is still 97.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 420.80ms. Allocated memory is still 184.5MB. Free memory was 156.1MB in the beginning and 145.6MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 115]: 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_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c328ca6a6071aea6db12d1e311bd2e5e22fce6c700c884e61df52925e139f834 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:04:30,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:04:30,541 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:04:30,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:04:30,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:04:30,612 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:04:30,615 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:04:30,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:04:30,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:04:30,623 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:04:30,624 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:04:30,625 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:04:30,626 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:04:30,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:04:30,628 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:04:30,629 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:04:30,629 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:04:30,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:04:30,630 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:04:30,632 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:04:30,632 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:04:30,633 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:04:30,634 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:04:30,634 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:04:30,635 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:04:30,635 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:04:30,636 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:04:30,636 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:04:30,637 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:04:30,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:04:30,640 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:04:30,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:30,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:04:30,641 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:04:30,641 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:04:30,642 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:04:30,642 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:04:30,642 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:04:30,642 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:04:30,644 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:04:30,644 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:04:30,645 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_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c328ca6a6071aea6db12d1e311bd2e5e22fce6c700c884e61df52925e139f834 [2023-11-06 22:04:31,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:04:31,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:04:31,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:04:31,195 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:04:31,195 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:04:31,197 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2023-11-06 22:04:34,651 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:04:34,983 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:04:34,984 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2023-11-06 22:04:34,996 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/data/d45fa54cd/7c106fc4664543f1a05ed7913e87a45b/FLAG9dca4bc81 [2023-11-06 22:04:35,013 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/data/d45fa54cd/7c106fc4664543f1a05ed7913e87a45b [2023-11-06 22:04:35,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:04:35,018 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:04:35,019 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:35,020 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:04:35,030 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:04:35,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:35" (1/1) ... [2023-11-06 22:04:35,033 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@888fa1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:35, skipping insertion in model container [2023-11-06 22:04:35,033 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:35" (1/1) ... [2023-11-06 22:04:35,067 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:04:35,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:35,328 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 22:04:35,335 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:04:35,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:35,389 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:04:35,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:04:35,442 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:04:35,444 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:04:35,453 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:04:35,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:35 WrapperNode [2023-11-06 22:04:35,455 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:04:35,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:35,457 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:04:35,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:04:35,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:35" (1/1) ... [2023-11-06 22:04:35,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:35" (1/1) ... [2023-11-06 22:04:35,591 INFO L138 Inliner]: procedures = 27, calls = 59, calls flagged for inlining = 17, calls inlined = 29, statements flattened = 280 [2023-11-06 22:04:35,591 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:04:35,592 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:04:35,593 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:04:35,593 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:04:35,604 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:35" (1/1) ... [2023-11-06 22:04:35,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:35" (1/1) ... [2023-11-06 22:04:35,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:35" (1/1) ... [2023-11-06 22:04:35,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:35" (1/1) ... [2023-11-06 22:04:35,652 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:35" (1/1) ... [2023-11-06 22:04:35,669 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:35" (1/1) ... [2023-11-06 22:04:35,672 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:35" (1/1) ... [2023-11-06 22:04:35,675 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:35" (1/1) ... [2023-11-06 22:04:35,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:04:35,693 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:04:35,693 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:04:35,693 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:04:35,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:35" (1/1) ... [2023-11-06 22:04:35,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:04:35,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:04:35,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:04:35,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:04:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:04:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:04:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:04:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:04:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:04:35,802 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:04:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:04:35,802 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:04:35,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:04:35,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:04:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:04:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:04:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:04:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:04:35,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:04:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:04:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:04:35,809 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:04:36,019 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:04:36,022 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:04:37,300 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:04:37,845 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:04:37,846 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-06 22:04:37,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:37 BoogieIcfgContainer [2023-11-06 22:04:37,849 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:04:37,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:04:37,853 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:04:37,857 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:04:37,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:04:35" (1/3) ... [2023-11-06 22:04:37,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1c1611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:37, skipping insertion in model container [2023-11-06 22:04:37,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:35" (2/3) ... [2023-11-06 22:04:37,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1c1611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:37, skipping insertion in model container [2023-11-06 22:04:37,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:37" (3/3) ... [2023-11-06 22:04:37,862 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2023-11-06 22:04:37,888 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:04:37,889 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-06 22:04:37,889 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:04:38,066 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:04:38,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 232 transitions, 485 flow [2023-11-06 22:04:38,319 INFO L124 PetriNetUnfolderBase]: 16/229 cut-off events. [2023-11-06 22:04:38,320 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:04:38,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 229 events. 16/229 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 263 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2023-11-06 22:04:38,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 232 transitions, 485 flow [2023-11-06 22:04:38,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 224 transitions, 466 flow [2023-11-06 22:04:38,355 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:04:38,365 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 224 transitions, 466 flow [2023-11-06 22:04:38,373 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 224 transitions, 466 flow [2023-11-06 22:04:38,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 224 transitions, 466 flow [2023-11-06 22:04:38,469 INFO L124 PetriNetUnfolderBase]: 16/224 cut-off events. [2023-11-06 22:04:38,470 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:04:38,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 224 events. 16/224 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 261 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2023-11-06 22:04:38,478 INFO L119 LiptonReduction]: Number of co-enabled transitions 3264 [2023-11-06 22:05:27,897 INFO L134 LiptonReduction]: Checked pairs total: 4873 [2023-11-06 22:05:27,898 INFO L136 LiptonReduction]: Total number of compositions: 234 [2023-11-06 22:05:27,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:05:27,922 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;@741aa1e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:05:27,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2023-11-06 22:05:27,926 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:05:27,927 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:05:27,927 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:05:27,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:27,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:05:27,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-06 22:05:27,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:27,935 INFO L85 PathProgramCache]: Analyzing trace with hash 39747, now seen corresponding path program 1 times [2023-11-06 22:05:27,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:05:27,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369152810] [2023-11-06 22:05:27,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:27,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:05:27,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:05:27,952 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:05:27,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 22:05:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:28,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:05:28,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:28,232 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:05:28,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,251 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:05:28,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,270 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:28,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,281 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:05:28,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,315 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:05:28,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,333 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:28,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,355 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:28,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,366 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:05:28,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,387 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:28,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,415 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:05:28,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,433 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:28,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,445 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:05:28,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,485 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:05:28,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,506 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:28,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,528 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:28,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,557 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:05:28,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,606 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:05:28,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,637 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:05:28,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,660 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:28,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,690 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:05:28,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,708 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:28,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,719 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:05:28,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,751 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:28,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:28,763 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:05:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:28,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:28,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:05:28,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369152810] [2023-11-06 22:05:28,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369152810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:28,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:28,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:05:28,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754272061] [2023-11-06 22:05:28,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:28,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:05:28,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:05:28,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:05:28,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:05:29,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 466 [2023-11-06 22:05:29,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:29,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:29,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 466 [2023-11-06 22:05:29,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:32,776 INFO L124 PetriNetUnfolderBase]: 9548/11895 cut-off events. [2023-11-06 22:05:32,777 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-11-06 22:05:32,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23940 conditions, 11895 events. 9548/11895 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 55457 event pairs, 4848 based on Foata normal form. 0/2847 useless extension candidates. Maximal degree in co-relation 21472. Up to 11835 conditions per place. [2023-11-06 22:05:32,917 INFO L140 encePairwiseOnDemand]: 456/466 looper letters, 54 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2023-11-06 22:05:32,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 268 flow [2023-11-06 22:05:32,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:05:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:05:32,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions. [2023-11-06 22:05:32,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45350500715307585 [2023-11-06 22:05:32,955 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions. [2023-11-06 22:05:32,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions. [2023-11-06 22:05:32,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:32,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions. [2023-11-06 22:05:32,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:32,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:32,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:32,992 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 132 flow. Second operand 3 states and 634 transitions. [2023-11-06 22:05:33,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 268 flow [2023-11-06 22:05:33,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 64 transitions, 256 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:05:33,018 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 174 flow [2023-11-06 22:05:33,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2023-11-06 22:05:33,025 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -3 predicate places. [2023-11-06 22:05:33,025 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 174 flow [2023-11-06 22:05:33,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:33,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:33,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:05:33,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:33,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:05:33,242 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-06 22:05:33,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:33,257 INFO L85 PathProgramCache]: Analyzing trace with hash 39746, now seen corresponding path program 1 times [2023-11-06 22:05:33,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:05:33,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204232896] [2023-11-06 22:05:33,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:33,258 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:05:33,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:05:33,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:05:33,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 22:05:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:33,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:05:33,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:33,378 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:05:33,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,403 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:05:33,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,428 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:05:33,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,442 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:05:33,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,480 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:05:33,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,502 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:05:33,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,522 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:05:33,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,549 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:05:33,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,560 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:05:33,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,570 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:05:33,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,587 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:05:33,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,595 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:05:33,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,610 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:05:33,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,621 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:05:33,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,642 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:05:33,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,648 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:05:33,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,670 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:05:33,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,681 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:05:33,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,706 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:05:33,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,718 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:05:33,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,730 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:05:33,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,737 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:05:33,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,750 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:05:33,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:33,757 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:05:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:33,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:33,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:05:33,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204232896] [2023-11-06 22:05:33,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204232896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:33,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:33,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:05:33,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942506336] [2023-11-06 22:05:33,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:33,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:05:33,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:05:33,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:05:33,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:05:33,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 466 [2023-11-06 22:05:33,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:33,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:33,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 466 [2023-11-06 22:05:33,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:36,876 INFO L124 PetriNetUnfolderBase]: 9548/11891 cut-off events. [2023-11-06 22:05:36,876 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:05:36,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23816 conditions, 11891 events. 9548/11891 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 55681 event pairs, 4848 based on Foata normal form. 4/2853 useless extension candidates. Maximal degree in co-relation 23760. Up to 11827 conditions per place. [2023-11-06 22:05:36,996 INFO L140 encePairwiseOnDemand]: 460/466 looper letters, 50 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2023-11-06 22:05:36,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 284 flow [2023-11-06 22:05:36,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:05:36,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:05:37,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 629 transitions. [2023-11-06 22:05:37,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449928469241774 [2023-11-06 22:05:37,001 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 629 transitions. [2023-11-06 22:05:37,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 629 transitions. [2023-11-06 22:05:37,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:37,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 629 transitions. [2023-11-06 22:05:37,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:37,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:37,013 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:37,013 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 174 flow. Second operand 3 states and 629 transitions. [2023-11-06 22:05:37,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 284 flow [2023-11-06 22:05:37,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:05:37,018 INFO L231 Difference]: Finished difference. Result has 57 places, 60 transitions, 170 flow [2023-11-06 22:05:37,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=57, PETRI_TRANSITIONS=60} [2023-11-06 22:05:37,019 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2023-11-06 22:05:37,020 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 60 transitions, 170 flow [2023-11-06 22:05:37,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:37,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:37,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:05:37,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:37,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:05:37,234 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-06 22:05:37,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:37,235 INFO L85 PathProgramCache]: Analyzing trace with hash 38320534, now seen corresponding path program 1 times [2023-11-06 22:05:37,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:05:37,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021274265] [2023-11-06 22:05:37,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:37,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:05:37,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:05:37,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:05:37,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-06 22:05:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:37,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:05:37,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:37,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:05:37,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:05:37,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021274265] [2023-11-06 22:05:37,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021274265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:05:37,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:05:37,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:05:37,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857193496] [2023-11-06 22:05:37,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:05:37,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:05:37,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:05:37,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:05:37,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:05:37,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 466 [2023-11-06 22:05:37,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 60 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:37,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:37,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 466 [2023-11-06 22:05:37,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:40,405 INFO L124 PetriNetUnfolderBase]: 9544/11888 cut-off events. [2023-11-06 22:05:40,405 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:05:40,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23804 conditions, 11888 events. 9544/11888 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 55587 event pairs, 4848 based on Foata normal form. 3/2851 useless extension candidates. Maximal degree in co-relation 23760. Up to 11830 conditions per place. [2023-11-06 22:05:40,497 INFO L140 encePairwiseOnDemand]: 459/466 looper letters, 49 selfloop transitions, 4 changer transitions 1/57 dead transitions. [2023-11-06 22:05:40,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 260 flow [2023-11-06 22:05:40,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:05:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:05:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 817 transitions. [2023-11-06 22:05:40,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383047210300429 [2023-11-06 22:05:40,502 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 817 transitions. [2023-11-06 22:05:40,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 817 transitions. [2023-11-06 22:05:40,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:40,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 817 transitions. [2023-11-06 22:05:40,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 204.25) internal successors, (817), 4 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:40,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 466.0) internal successors, (2330), 5 states have internal predecessors, (2330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:40,513 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 466.0) internal successors, (2330), 5 states have internal predecessors, (2330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:40,514 INFO L175 Difference]: Start difference. First operand has 57 places, 60 transitions, 170 flow. Second operand 4 states and 817 transitions. [2023-11-06 22:05:40,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 260 flow [2023-11-06 22:05:40,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:05:40,517 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 148 flow [2023-11-06 22:05:40,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-11-06 22:05:40,518 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2023-11-06 22:05:40,519 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 148 flow [2023-11-06 22:05:40,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:40,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:40,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:05:40,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-06 22:05:40,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:05:40,734 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-06 22:05:40,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:40,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1235138, now seen corresponding path program 1 times [2023-11-06 22:05:40,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:05:40,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378125678] [2023-11-06 22:05:40,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:40,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:05:40,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:05:40,739 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:05:40,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-06 22:05:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:40,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:05:40,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:40,874 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:05:40,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:40,889 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:05:40,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:40,907 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:40,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:40,930 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:05:40,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:40,950 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:05:40,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:40,964 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:41,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,003 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:05:41,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,019 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:41,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,059 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:05:41,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,101 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:05:41,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,119 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:41,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,148 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:05:41,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,169 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:41,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,197 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:05:41,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,213 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:41,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,231 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:05:41,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,243 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:05:41,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,258 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:41,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,284 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:41,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,294 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:05:41,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,311 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:41,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,321 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:05:41,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,342 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:05:41,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:41,368 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:05:41,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:41,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:41,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:05:41,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:05:41,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378125678] [2023-11-06 22:05:41,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378125678] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:05:41,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:05:41,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 22:05:41,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985220028] [2023-11-06 22:05:41,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:41,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:05:41,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:05:41,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:05:41,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:05:43,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 466 [2023-11-06 22:05:43,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:43,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:05:43,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 466 [2023-11-06 22:05:43,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:05:45,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:05:47,830 INFO L124 PetriNetUnfolderBase]: 9556/11905 cut-off events. [2023-11-06 22:05:47,830 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:05:47,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23858 conditions, 11905 events. 9556/11905 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 55615 event pairs, 4848 based on Foata normal form. 0/2857 useless extension candidates. Maximal degree in co-relation 23811. Up to 11839 conditions per place. [2023-11-06 22:05:47,908 INFO L140 encePairwiseOnDemand]: 457/466 looper letters, 49 selfloop transitions, 22 changer transitions 0/74 dead transitions. [2023-11-06 22:05:47,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 74 transitions, 368 flow [2023-11-06 22:05:47,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:05:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:05:47,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1157 transitions. [2023-11-06 22:05:47,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138054363376252 [2023-11-06 22:05:47,916 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1157 transitions. [2023-11-06 22:05:47,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1157 transitions. [2023-11-06 22:05:47,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:05:47,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1157 transitions. [2023-11-06 22:05:47,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 192.83333333333334) internal successors, (1157), 6 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:47,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 466.0) internal successors, (3262), 7 states have internal predecessors, (3262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:47,934 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 466.0) internal successors, (3262), 7 states have internal predecessors, (3262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:47,935 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 148 flow. Second operand 6 states and 1157 transitions. [2023-11-06 22:05:47,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 74 transitions, 368 flow [2023-11-06 22:05:47,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 74 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:05:47,941 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 302 flow [2023-11-06 22:05:47,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=63, PETRI_TRANSITIONS=74} [2023-11-06 22:05:47,944 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 1 predicate places. [2023-11-06 22:05:47,945 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 302 flow [2023-11-06 22:05:47,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:05:47,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:05:47,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:05:47,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:05:48,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:05:48,163 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-06 22:05:48,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:05:48,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1187091285, now seen corresponding path program 1 times [2023-11-06 22:05:48,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:05:48,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965975347] [2023-11-06 22:05:48,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:05:48,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:05:48,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:05:48,168 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:05:48,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-06 22:05:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:05:48,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:05:48,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:05:48,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:48,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:48,508 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:05:48,508 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2023-11-06 22:05:48,528 INFO L351 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 10 treesize of output 8 [2023-11-06 22:05:48,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:48,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:48,681 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:05:48,682 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 22 [2023-11-06 22:05:48,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:48,737 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-06 22:05:48,738 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 85 [2023-11-06 22:05:48,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:48,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:48,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:48,916 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:05:48,917 INFO L351 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 22 [2023-11-06 22:05:48,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:05:48,950 INFO L351 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 [2023-11-06 22:05:49,639 INFO L322 Elim1Store]: treesize reduction 40, result has 54.5 percent of original size [2023-11-06 22:05:49,639 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 86 [2023-11-06 22:05:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:05:53,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:05:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:05:53,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:05:53,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965975347] [2023-11-06 22:05:53,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965975347] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:05:53,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:05:53,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-06 22:05:53,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680760285] [2023-11-06 22:05:53,917 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:05:53,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:05:53,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:05:53,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:05:53,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:05:55,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:06:02,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-06 22:06:06,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 466 [2023-11-06 22:06:06,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 74 transitions, 302 flow. Second operand has 8 states, 8 states have (on average 176.25) internal successors, (1410), 8 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:06,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:06,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 466 [2023-11-06 22:06:06,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:31,544 INFO L124 PetriNetUnfolderBase]: 29449/37027 cut-off events. [2023-11-06 22:06:31,544 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-06 22:06:31,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74248 conditions, 37027 events. 29449/37027 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 2752. Compared 199427 event pairs, 14907 based on Foata normal form. 0/9569 useless extension candidates. Maximal degree in co-relation 55565. Up to 9204 conditions per place. [2023-11-06 22:06:31,766 INFO L140 encePairwiseOnDemand]: 456/466 looper letters, 193 selfloop transitions, 28 changer transitions 0/224 dead transitions. [2023-11-06 22:06:31,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 224 transitions, 1206 flow [2023-11-06 22:06:31,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:06:31,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 22:06:31,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2487 transitions. [2023-11-06 22:06:31,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41053152855727965 [2023-11-06 22:06:31,780 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2487 transitions. [2023-11-06 22:06:31,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2487 transitions. [2023-11-06 22:06:31,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:31,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2487 transitions. [2023-11-06 22:06:31,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 191.30769230769232) internal successors, (2487), 13 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:31,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 466.0) internal successors, (6524), 14 states have internal predecessors, (6524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:31,808 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 466.0) internal successors, (6524), 14 states have internal predecessors, (6524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:31,808 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 302 flow. Second operand 13 states and 2487 transitions. [2023-11-06 22:06:31,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 224 transitions, 1206 flow [2023-11-06 22:06:31,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 224 transitions, 1131 flow, removed 33 selfloop flow, removed 1 redundant places. [2023-11-06 22:06:31,816 INFO L231 Difference]: Finished difference. Result has 80 places, 90 transitions, 496 flow [2023-11-06 22:06:31,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=496, PETRI_PLACES=80, PETRI_TRANSITIONS=90} [2023-11-06 22:06:31,820 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 18 predicate places. [2023-11-06 22:06:31,820 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 90 transitions, 496 flow [2023-11-06 22:06:31,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 176.25) internal successors, (1410), 8 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:31,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:31,822 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:06:31,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:32,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:06:32,034 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-06 22:06:32,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:32,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1854875419, now seen corresponding path program 1 times [2023-11-06 22:06:32,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:06:32,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827009187] [2023-11-06 22:06:32,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:06:32,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:06:32,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:06:32,037 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:06:32,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-06 22:06:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:06:32,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:06:32,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:32,249 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:06:32,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:32,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:32,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:06:32,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827009187] [2023-11-06 22:06:32,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827009187] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:32,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:06:32,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-06 22:06:32,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20444540] [2023-11-06 22:06:32,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:32,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:06:32,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:06:32,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:06:32,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:06:35,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 466 [2023-11-06 22:06:35,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 90 transitions, 496 flow. Second operand has 10 states, 10 states have (on average 177.1) internal successors, (1771), 10 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:35,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:35,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 466 [2023-11-06 22:06:35,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:41,986 INFO L124 PetriNetUnfolderBase]: 29469/37044 cut-off events. [2023-11-06 22:06:41,986 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-11-06 22:06:42,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74287 conditions, 37044 events. 29469/37044 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 2522. Compared 199250 event pairs, 14913 based on Foata normal form. 1/9561 useless extension candidates. Maximal degree in co-relation 74267. Up to 27598 conditions per place. [2023-11-06 22:06:42,288 INFO L140 encePairwiseOnDemand]: 457/466 looper letters, 100 selfloop transitions, 22 changer transitions 0/125 dead transitions. [2023-11-06 22:06:42,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 125 transitions, 767 flow [2023-11-06 22:06:42,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:06:42,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:06:42,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1511 transitions. [2023-11-06 22:06:42,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053111587982833 [2023-11-06 22:06:42,298 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1511 transitions. [2023-11-06 22:06:42,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1511 transitions. [2023-11-06 22:06:42,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:42,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1511 transitions. [2023-11-06 22:06:42,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 188.875) internal successors, (1511), 8 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:42,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 466.0) internal successors, (4194), 9 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:42,315 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 466.0) internal successors, (4194), 9 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:42,316 INFO L175 Difference]: Start difference. First operand has 80 places, 90 transitions, 496 flow. Second operand 8 states and 1511 transitions. [2023-11-06 22:06:42,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 125 transitions, 767 flow [2023-11-06 22:06:42,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 125 transitions, 743 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-06 22:06:42,323 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 455 flow [2023-11-06 22:06:42,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=455, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2023-11-06 22:06:42,324 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 20 predicate places. [2023-11-06 22:06:42,324 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 455 flow [2023-11-06 22:06:42,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 177.1) internal successors, (1771), 10 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:42,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:42,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:06:42,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-06 22:06:42,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:06:42,537 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-06 22:06:42,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:42,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1187091284, now seen corresponding path program 2 times [2023-11-06 22:06:42,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:06:42,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576023539] [2023-11-06 22:06:42,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:06:42,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:06:42,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:06:42,540 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:06:42,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-06 22:06:42,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:06:42,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:42,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:06:42,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:42,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:42,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:42,676 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-11-06 22:06:42,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:42,722 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-06 22:06:42,722 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 15 [2023-11-06 22:06:42,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:42,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:42,756 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-11-06 22:06:42,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:42,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:42,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:42,809 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-06 22:06:42,810 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 18 [2023-11-06 22:06:42,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:42,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:42,897 INFO L322 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2023-11-06 22:06:42,897 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22 [2023-11-06 22:06:42,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:42,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:42,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:42,955 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-06 22:06:42,955 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 18 [2023-11-06 22:06:43,023 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:06:43,023 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 22:06:43,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:06:43,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:06:43,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:06:43,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576023539] [2023-11-06 22:06:43,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576023539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:06:43,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:06:43,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:06:43,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345897101] [2023-11-06 22:06:43,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:06:43,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:06:43,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:06:43,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:06:43,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:06:43,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 466 [2023-11-06 22:06:43,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 455 flow. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:43,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:43,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 466 [2023-11-06 22:06:43,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:46,664 INFO L124 PetriNetUnfolderBase]: 20779/26557 cut-off events. [2023-11-06 22:06:46,664 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-06 22:06:46,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53294 conditions, 26557 events. 20779/26557 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 1787. Compared 144628 event pairs, 10440 based on Foata normal form. 3/7696 useless extension candidates. Maximal degree in co-relation 39995. Up to 26333 conditions per place. [2023-11-06 22:06:46,811 INFO L140 encePairwiseOnDemand]: 463/466 looper letters, 73 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2023-11-06 22:06:46,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 77 transitions, 556 flow [2023-11-06 22:06:46,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:06:46,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:06:46,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2023-11-06 22:06:46,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563662374821173 [2023-11-06 22:06:46,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2023-11-06 22:06:46,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2023-11-06 22:06:46,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:06:46,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2023-11-06 22:06:46,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:46,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:46,822 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:46,822 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 455 flow. Second operand 3 states and 638 transitions. [2023-11-06 22:06:46,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 77 transitions, 556 flow [2023-11-06 22:06:46,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 77 transitions, 513 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-06 22:06:46,827 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 367 flow [2023-11-06 22:06:46,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=367, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2023-11-06 22:06:46,828 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 14 predicate places. [2023-11-06 22:06:46,828 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 367 flow [2023-11-06 22:06:46,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:46,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:06:46,829 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:06:46,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:06:47,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:06:47,040 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-06 22:06:47,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:06:47,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1855749373, now seen corresponding path program 2 times [2023-11-06 22:06:47,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:06:47,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319519491] [2023-11-06 22:06:47,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:06:47,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:06:47,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:06:47,043 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:06:47,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-06 22:06:47,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:06:47,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:06:47,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:06:47,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:06:47,165 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:06:47,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,179 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:06:47,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,190 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:06:47,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,197 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:06:47,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,212 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:06:47,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,235 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:06:47,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,250 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:06:47,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,259 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:06:47,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,282 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:06:47,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,293 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:06:47,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,303 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:06:47,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,316 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:06:47,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,326 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:06:47,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,337 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:06:47,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,358 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:06:47,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,370 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:06:47,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,379 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:06:47,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,389 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:06:47,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,414 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:06:47,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,425 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:06:47,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,437 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:06:47,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,458 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:06:47,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,481 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:06:47,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:06:47,513 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:06:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:47,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:06:48,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:06:48,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:06:48,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319519491] [2023-11-06 22:06:48,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319519491] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:06:48,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:06:48,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:06:48,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113708660] [2023-11-06 22:06:48,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:06:48,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:06:48,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:06:48,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:06:48,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:06:54,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 466 [2023-11-06 22:06:54,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 367 flow. Second operand has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:06:54,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:06:54,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 466 [2023-11-06 22:06:54,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:06:59,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:01,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:03,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:05,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:07:09,942 INFO L124 PetriNetUnfolderBase]: 20791/26579 cut-off events. [2023-11-06 22:07:09,942 INFO L125 PetriNetUnfolderBase]: For 179/179 co-relation queries the response was YES. [2023-11-06 22:07:10,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53374 conditions, 26579 events. 20791/26579 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 1945. Compared 145405 event pairs, 10440 based on Foata normal form. 10/7725 useless extension candidates. Maximal degree in co-relation 53357. Up to 26325 conditions per place. [2023-11-06 22:07:10,144 INFO L140 encePairwiseOnDemand]: 458/466 looper letters, 48 selfloop transitions, 46 changer transitions 0/97 dead transitions. [2023-11-06 22:07:10,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 97 transitions, 715 flow [2023-11-06 22:07:10,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:07:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:07:10,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2275 transitions. [2023-11-06 22:07:10,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40683118741058655 [2023-11-06 22:07:10,154 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2275 transitions. [2023-11-06 22:07:10,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2275 transitions. [2023-11-06 22:07:10,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:07:10,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2275 transitions. [2023-11-06 22:07:10,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 189.58333333333334) internal successors, (2275), 12 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:10,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 466.0) internal successors, (6058), 13 states have internal predecessors, (6058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:10,178 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 466.0) internal successors, (6058), 13 states have internal predecessors, (6058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:10,178 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 367 flow. Second operand 12 states and 2275 transitions. [2023-11-06 22:07:10,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 97 transitions, 715 flow [2023-11-06 22:07:10,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 97 transitions, 714 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:07:10,186 INFO L231 Difference]: Finished difference. Result has 92 places, 97 transitions, 676 flow [2023-11-06 22:07:10,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=676, PETRI_PLACES=92, PETRI_TRANSITIONS=97} [2023-11-06 22:07:10,189 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 30 predicate places. [2023-11-06 22:07:10,189 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 97 transitions, 676 flow [2023-11-06 22:07:10,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:10,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:07:10,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:07:10,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-06 22:07:10,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:07:10,403 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-06 22:07:10,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:10,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1666543364, now seen corresponding path program 1 times [2023-11-06 22:07:10,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:07:10,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476137865] [2023-11-06 22:07:10,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:10,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:07:10,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:07:10,405 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:07:10,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b54c8595-fdb4-44e6-ba06-2c86bb978a22/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-06 22:07:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:10,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:07:10,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:10,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:10,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:10,646 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-11-06 22:07:10,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:10,674 INFO L351 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 [2023-11-06 22:07:10,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:10,729 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-06 22:07:10,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:10,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:10,753 INFO L351 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 5 treesize of output 3 [2023-11-06 22:07:10,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:10,802 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-06 22:07:10,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:10,819 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-06 22:07:10,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:10,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:10,872 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-06 22:07:10,887 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 22:07:10,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:10,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:10,959 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-06 22:07:10,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:10,975 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 22:07:11,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:11,020 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-06 22:07:11,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:11,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:11,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:11,106 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-06 22:07:11,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:11,158 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-06 22:07:11,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:07:12,269 INFO L322 Elim1Store]: treesize reduction 52, result has 60.9 percent of original size [2023-11-06 22:07:12,270 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 146