./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:20:57,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:20:57,482 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:20:57,491 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:20:57,492 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:20:57,531 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:20:57,531 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:20:57,532 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:20:57,533 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:20:57,538 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:20:57,540 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:20:57,540 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:20:57,540 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:20:57,542 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:20:57,543 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:20:57,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:20:57,544 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:20:57,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:20:57,544 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:20:57,545 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:20:57,545 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:20:57,546 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:20:57,546 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:20:57,547 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:20:57,547 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:20:57,549 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:20:57,550 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:20:57,550 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:20:57,551 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:20:57,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:20:57,552 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:20:57,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:20:57,553 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:20:57,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:20:57,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:20:57,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:20:57,568 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:20:57,568 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:20:57,568 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_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 [2023-11-06 22:20:57,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:20:57,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:20:57,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:20:57,973 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:20:57,974 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:20:57,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2023-11-06 22:21:01,130 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:21:01,379 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:21:01,382 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2023-11-06 22:21:01,392 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/data/2a102dc97/a40afcb1c60c4222a5404b63feb5bf96/FLAG06b777a17 [2023-11-06 22:21:01,408 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/data/2a102dc97/a40afcb1c60c4222a5404b63feb5bf96 [2023-11-06 22:21:01,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:21:01,417 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:21:01,422 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:21:01,422 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:21:01,428 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:21:01,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:21:01" (1/1) ... [2023-11-06 22:21:01,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd7dea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:01, skipping insertion in model container [2023-11-06 22:21:01,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:21:01" (1/1) ... [2023-11-06 22:21:01,464 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:21:01,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:21:01,739 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 22:21:01,740 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b7e0259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:01, skipping insertion in model container [2023-11-06 22:21:01,741 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:21:01,741 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 22:21:01,744 INFO L158 Benchmark]: Toolchain (without parser) took 324.71ms. Allocated memory is still 132.1MB. Free memory was 92.3MB in the beginning and 82.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:21:01,744 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 132.1MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:21:01,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.01ms. Allocated memory is still 132.1MB. Free memory was 92.3MB in the beginning and 82.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:21:01,747 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60ms. Allocated memory is still 132.1MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.01ms. Allocated memory is still 132.1MB. Free memory was 92.3MB in the beginning and 82.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 95]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:21:04,255 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:21:04,398 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:21:04,407 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:21:04,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:21:04,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:21:04,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:21:04,457 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:21:04,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:21:04,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:21:04,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:21:04,464 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:21:04,465 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:21:04,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:21:04,467 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:21:04,468 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:21:04,468 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:21:04,469 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:21:04,469 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:21:04,469 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:21:04,470 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:21:04,470 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:21:04,471 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:21:04,471 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:21:04,472 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:21:04,472 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:21:04,473 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:21:04,473 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:21:04,474 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:21:04,474 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:21:04,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:21:04,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:21:04,476 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:21:04,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:21:04,477 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:21:04,477 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:21:04,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:21:04,478 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:21:04,478 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:21:04,479 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:21:04,480 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:21:04,480 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_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 610058eb9ed98833ba9b7a0798b4759bf36fe1b982d69af76f73ab299f075720 [2023-11-06 22:21:04,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:21:04,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:21:04,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:21:04,941 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:21:04,942 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:21:04,943 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2023-11-06 22:21:08,101 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:21:08,384 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:21:08,385 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2023-11-06 22:21:08,397 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/data/2aa5a2808/30c4239417ec4d88b08031c7da9282c2/FLAGb9e2b5961 [2023-11-06 22:21:08,415 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/data/2aa5a2808/30c4239417ec4d88b08031c7da9282c2 [2023-11-06 22:21:08,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:21:08,419 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:21:08,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:21:08,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:21:08,428 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:21:08,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9920b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08, skipping insertion in model container [2023-11-06 22:21:08,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,466 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:21:08,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:21:08,680 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 22:21:08,685 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:21:08,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:21:08,707 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:21:08,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:21:08,755 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:21:08,755 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:21:08,769 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:21:08,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08 WrapperNode [2023-11-06 22:21:08,770 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:21:08,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:21:08,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:21:08,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:21:08,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,797 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,834 INFO L138 Inliner]: procedures = 26, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 132 [2023-11-06 22:21:08,838 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:21:08,839 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:21:08,840 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:21:08,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:21:08,850 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,855 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,855 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,865 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,871 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:21:08,878 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:21:08,878 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:21:08,878 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:21:08,879 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (1/1) ... [2023-11-06 22:21:08,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:21:08,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:21:08,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:21:08,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:21:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:21:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:21:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:21:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:21:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:21:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:21:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:21:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:21:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:21:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:21:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:21:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:21:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:21:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:21:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:21:08,966 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 22:21:09,133 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:21:09,136 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:21:09,696 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:21:09,836 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:21:09,836 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:21:09,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:21:09 BoogieIcfgContainer [2023-11-06 22:21:09,839 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:21:09,841 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:21:09,841 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:21:09,844 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:21:09,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:21:08" (1/3) ... [2023-11-06 22:21:09,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6221977f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:21:09, skipping insertion in model container [2023-11-06 22:21:09,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:08" (2/3) ... [2023-11-06 22:21:09,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6221977f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:21:09, skipping insertion in model container [2023-11-06 22:21:09,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:21:09" (3/3) ... [2023-11-06 22:21:09,849 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2023-11-06 22:21:09,869 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:21:09,870 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-06 22:21:09,870 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:21:09,970 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:21:10,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 140 transitions, 294 flow [2023-11-06 22:21:10,132 INFO L124 PetriNetUnfolderBase]: 9/138 cut-off events. [2023-11-06 22:21:10,133 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:21:10,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 138 events. 9/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 124 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-11-06 22:21:10,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 140 transitions, 294 flow [2023-11-06 22:21:10,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 133 transitions, 278 flow [2023-11-06 22:21:10,163 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:21:10,181 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 133 transitions, 278 flow [2023-11-06 22:21:10,184 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 133 transitions, 278 flow [2023-11-06 22:21:10,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 133 transitions, 278 flow [2023-11-06 22:21:10,218 INFO L124 PetriNetUnfolderBase]: 9/133 cut-off events. [2023-11-06 22:21:10,219 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:21:10,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 133 events. 9/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 122 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-11-06 22:21:10,222 INFO L119 LiptonReduction]: Number of co-enabled transitions 748 [2023-11-06 22:21:27,140 INFO L134 LiptonReduction]: Checked pairs total: 985 [2023-11-06 22:21:27,140 INFO L136 LiptonReduction]: Total number of compositions: 151 [2023-11-06 22:21:27,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:21:27,164 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;@3ffed918, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:21:27,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-06 22:21:27,168 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:21:27,169 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:21:27,169 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:21:27,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:27,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:21:27,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:21:27,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:27,176 INFO L85 PathProgramCache]: Analyzing trace with hash 19363, now seen corresponding path program 1 times [2023-11-06 22:21:27,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:21:27,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9057020] [2023-11-06 22:21:27,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:27,190 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 22:21:27,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:21:27,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:27,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:27,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:21:27,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:27,417 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 22:21:27,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:27,443 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 22:21:27,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:27,473 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 22:21:27,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:27,490 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 22:21:27,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:27,499 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 22:21:27,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:27,509 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 22:21:27,517 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 22:21:27,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:21:27,518 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:21:27,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9057020] [2023-11-06 22:21:27,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9057020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:27,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:27,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:21:27,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165779533] [2023-11-06 22:21:27,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:27,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:27,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:21:27,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:27,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:21:27,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 291 [2023-11-06 22:21:27,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 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 22:21:27,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:27,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 291 [2023-11-06 22:21:27,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:27,956 INFO L124 PetriNetUnfolderBase]: 146/249 cut-off events. [2023-11-06 22:21:27,956 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 22:21:27,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 249 events. 146/249 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 791 event pairs, 105 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 424. Up to 247 conditions per place. [2023-11-06 22:21:27,962 INFO L140 encePairwiseOnDemand]: 285/291 looper letters, 24 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2023-11-06 22:21:27,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 124 flow [2023-11-06 22:21:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:27,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:27,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2023-11-06 22:21:27,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329896907216495 [2023-11-06 22:21:27,984 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2023-11-06 22:21:27,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2023-11-06 22:21:27,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:27,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2023-11-06 22:21:27,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 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 22:21:28,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:21:28,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:21:28,006 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 72 flow. Second operand 3 states and 378 transitions. [2023-11-06 22:21:28,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 124 flow [2023-11-06 22:21:28,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:21:28,013 INFO L231 Difference]: Finished difference. Result has 30 places, 28 transitions, 68 flow [2023-11-06 22:21:28,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=28} [2023-11-06 22:21:28,019 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-11-06 22:21:28,020 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 68 flow [2023-11-06 22:21:28,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 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 22:21:28,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:28,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:21:28,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:28,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:28,222 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:21:28,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:28,222 INFO L85 PathProgramCache]: Analyzing trace with hash 19417, now seen corresponding path program 1 times [2023-11-06 22:21:28,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:21:28,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144824260] [2023-11-06 22:21:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:28,223 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 22:21:28,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:21:28,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:28,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:28,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:21:28,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:28,365 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:21:28,365 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 19 treesize of output 22 [2023-11-06 22:21:28,409 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-06 22:21:28,410 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-06 22:21:28,443 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 22:21:28,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:21:28,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:21:28,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144824260] [2023-11-06 22:21:28,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144824260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:28,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:28,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:21:28,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042090157] [2023-11-06 22:21:28,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:28,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:28,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:21:28,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:28,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:21:28,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 291 [2023-11-06 22:21:28,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 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 22:21:28,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:28,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 291 [2023-11-06 22:21:28,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:28,878 INFO L124 PetriNetUnfolderBase]: 114/200 cut-off events. [2023-11-06 22:21:28,879 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:21:28,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 200 events. 114/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 606 event pairs, 81 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 395. Up to 200 conditions per place. [2023-11-06 22:21:28,881 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 25 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-11-06 22:21:28,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 114 flow [2023-11-06 22:21:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:28,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:28,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-11-06 22:21:28,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42038946162657503 [2023-11-06 22:21:28,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-11-06 22:21:28,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-11-06 22:21:28,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:28,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-11-06 22:21:28,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 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 22:21:28,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:21:28,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:21:28,899 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 68 flow. Second operand 3 states and 367 transitions. [2023-11-06 22:21:28,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 114 flow [2023-11-06 22:21:28,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:21:28,901 INFO L231 Difference]: Finished difference. Result has 28 places, 26 transitions, 58 flow [2023-11-06 22:21:28,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=28, PETRI_TRANSITIONS=26} [2023-11-06 22:21:28,902 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -6 predicate places. [2023-11-06 22:21:28,903 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 26 transitions, 58 flow [2023-11-06 22:21:28,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 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 22:21:28,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:28,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:21:28,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:29,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:29,115 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:21:29,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:29,118 INFO L85 PathProgramCache]: Analyzing trace with hash 19361, now seen corresponding path program 1 times [2023-11-06 22:21:29,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:21:29,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471668277] [2023-11-06 22:21:29,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:29,119 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 22:21:29,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:21:29,123 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:29,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:29,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:21:29,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:29,236 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 22:21:29,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:29,256 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 22:21:29,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:29,278 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 22:21:29,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:29,288 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 22:21:29,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:29,332 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 22:21:29,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:29,353 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 22:21:29,382 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 22:21:29,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:21:29,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:21:29,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471668277] [2023-11-06 22:21:29,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471668277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:29,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:29,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:21:29,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061488187] [2023-11-06 22:21:29,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:29,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:29,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:21:29,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:29,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:21:29,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 291 [2023-11-06 22:21:29,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 22:21:29,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:29,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 291 [2023-11-06 22:21:29,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:29,787 INFO L124 PetriNetUnfolderBase]: 116/203 cut-off events. [2023-11-06 22:21:29,787 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:21:29,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 203 events. 116/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 608 event pairs, 81 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 409. Up to 203 conditions per place. [2023-11-06 22:21:29,790 INFO L140 encePairwiseOnDemand]: 286/291 looper letters, 25 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2023-11-06 22:21:29,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 122 flow [2023-11-06 22:21:29,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:29,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2023-11-06 22:21:29,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42955326460481097 [2023-11-06 22:21:29,793 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2023-11-06 22:21:29,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2023-11-06 22:21:29,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:29,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2023-11-06 22:21:29,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 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 22:21:29,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:21:29,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:21:29,799 INFO L175 Difference]: Start difference. First operand has 28 places, 26 transitions, 58 flow. Second operand 3 states and 375 transitions. [2023-11-06 22:21:29,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 122 flow [2023-11-06 22:21:29,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 121 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:21:29,802 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 83 flow [2023-11-06 22:21:29,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2023-11-06 22:21:29,803 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-11-06 22:21:29,803 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 83 flow [2023-11-06 22:21:29,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 22:21:29,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:29,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:21:29,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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)] Forceful destruction successful, exit code 0 [2023-11-06 22:21:30,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:30,016 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:21:30,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:30,017 INFO L85 PathProgramCache]: Analyzing trace with hash 601968, now seen corresponding path program 1 times [2023-11-06 22:21:30,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:21:30,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872508905] [2023-11-06 22:21:30,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:30,018 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 22:21:30,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:21:30,020 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:30,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:30,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:21:30,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:30,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:30,186 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:21:30,186 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 16 treesize of output 17 [2023-11-06 22:21:30,198 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 22:21:30,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:30,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:30,240 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 22:21:30,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:30,250 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 5 treesize of output 3 [2023-11-06 22:21:30,423 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 22:21:30,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:21:30,610 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 22:21:30,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:21:30,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872508905] [2023-11-06 22:21:30,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872508905] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:21:30,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:21:30,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 22:21:30,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517063719] [2023-11-06 22:21:30,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:21:30,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:21:30,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:21:30,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:21:30,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:21:31,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 291 [2023-11-06 22:21:31,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 83 flow. Second operand has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 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 22:21:31,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:31,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 291 [2023-11-06 22:21:31,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:32,069 INFO L124 PetriNetUnfolderBase]: 119/211 cut-off events. [2023-11-06 22:21:32,070 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:21:32,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 211 events. 119/211 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 641 event pairs, 81 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 442. Up to 202 conditions per place. [2023-11-06 22:21:32,072 INFO L140 encePairwiseOnDemand]: 286/291 looper letters, 27 selfloop transitions, 10 changer transitions 0/37 dead transitions. [2023-11-06 22:21:32,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 188 flow [2023-11-06 22:21:32,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:21:32,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:21:32,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 671 transitions. [2023-11-06 22:21:32,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3843069873997709 [2023-11-06 22:21:32,077 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 671 transitions. [2023-11-06 22:21:32,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 671 transitions. [2023-11-06 22:21:32,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:32,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 671 transitions. [2023-11-06 22:21:32,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 0 states have call successors, (0), 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 22:21:32,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 291.0) internal successors, (2037), 7 states have internal predecessors, (2037), 0 states have call successors, (0), 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 22:21:32,086 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 291.0) internal successors, (2037), 7 states have internal predecessors, (2037), 0 states have call successors, (0), 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 22:21:32,086 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 83 flow. Second operand 6 states and 671 transitions. [2023-11-06 22:21:32,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 188 flow [2023-11-06 22:21:32,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 183 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:21:32,088 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 150 flow [2023-11-06 22:21:32,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2023-11-06 22:21:32,090 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-11-06 22:21:32,090 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 150 flow [2023-11-06 22:21:32,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 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 22:21:32,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:32,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:21:32,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:32,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:32,306 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:21:32,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:32,307 INFO L85 PathProgramCache]: Analyzing trace with hash 601913, now seen corresponding path program 1 times [2023-11-06 22:21:32,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:21:32,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252761527] [2023-11-06 22:21:32,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:32,308 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 22:21:32,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:21:32,309 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:32,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:32,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:21:32,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:32,409 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 22:21:32,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:32,425 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 22:21:32,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:32,448 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 22:21:32,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:32,473 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 22:21:32,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:32,509 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 22:21:32,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:32,517 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:21:32,582 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 22:21:32,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:21:32,841 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 22:21:32,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:21:32,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252761527] [2023-11-06 22:21:32,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252761527] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:21:32,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:21:32,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 22:21:32,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286322303] [2023-11-06 22:21:32,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:21:32,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:21:32,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:21:32,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:21:32,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:21:33,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 291 [2023-11-06 22:21:33,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 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 22:21:33,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:33,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 291 [2023-11-06 22:21:33,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:34,304 INFO L124 PetriNetUnfolderBase]: 118/208 cut-off events. [2023-11-06 22:21:34,304 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:21:34,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 208 events. 118/208 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 631 event pairs, 81 based on Foata normal form. 3/82 useless extension candidates. Maximal degree in co-relation 451. Up to 205 conditions per place. [2023-11-06 22:21:34,306 INFO L140 encePairwiseOnDemand]: 287/291 looper letters, 25 selfloop transitions, 9 changer transitions 0/34 dead transitions. [2023-11-06 22:21:34,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 212 flow [2023-11-06 22:21:34,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:21:34,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:21:34,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 697 transitions. [2023-11-06 22:21:34,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3991981672394044 [2023-11-06 22:21:34,311 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 697 transitions. [2023-11-06 22:21:34,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 697 transitions. [2023-11-06 22:21:34,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:34,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 697 transitions. [2023-11-06 22:21:34,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.16666666666667) internal successors, (697), 6 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:34,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 291.0) internal successors, (2037), 7 states have internal predecessors, (2037), 0 states have call successors, (0), 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 22:21:34,321 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 291.0) internal successors, (2037), 7 states have internal predecessors, (2037), 0 states have call successors, (0), 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 22:21:34,321 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 150 flow. Second operand 6 states and 697 transitions. [2023-11-06 22:21:34,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 212 flow [2023-11-06 22:21:34,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 191 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-06 22:21:34,325 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 141 flow [2023-11-06 22:21:34,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2023-11-06 22:21:34,326 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-11-06 22:21:34,326 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 141 flow [2023-11-06 22:21:34,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 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 22:21:34,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:34,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:21:34,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:34,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:34,539 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:21:34,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:34,540 INFO L85 PathProgramCache]: Analyzing trace with hash 18671495, now seen corresponding path program 1 times [2023-11-06 22:21:34,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:21:34,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935510529] [2023-11-06 22:21:34,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:34,540 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 22:21:34,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:21:34,542 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:34,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:34,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:21:34,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:34,666 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:21:34,667 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 15 [2023-11-06 22:21:34,693 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:21:34,694 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-06 22:21:34,717 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:21:34,717 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-06 22:21:34,794 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 22:21:34,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:21:34,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:21:34,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935510529] [2023-11-06 22:21:34,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935510529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:34,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:34,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:21:34,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772504511] [2023-11-06 22:21:34,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:34,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:34,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:21:34,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:34,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:21:34,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 291 [2023-11-06 22:21:34,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 22:21:34,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:34,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 291 [2023-11-06 22:21:34,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:35,086 INFO L124 PetriNetUnfolderBase]: 110/192 cut-off events. [2023-11-06 22:21:35,086 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:21:35,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 192 events. 110/192 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 568 event pairs, 75 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 418. Up to 192 conditions per place. [2023-11-06 22:21:35,088 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-11-06 22:21:35,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 201 flow [2023-11-06 22:21:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:35,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:35,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2023-11-06 22:21:35,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41809851088201605 [2023-11-06 22:21:35,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2023-11-06 22:21:35,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2023-11-06 22:21:35,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:35,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2023-11-06 22:21:35,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 22:21:35,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:21:35,097 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:21:35,097 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 141 flow. Second operand 3 states and 365 transitions. [2023-11-06 22:21:35,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 201 flow [2023-11-06 22:21:35,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 173 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-06 22:21:35,100 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 111 flow [2023-11-06 22:21:35,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2023-11-06 22:21:35,102 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-11-06 22:21:35,102 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 111 flow [2023-11-06 22:21:35,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 22:21:35,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:35,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:21:35,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:21:35,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:35,314 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:21:35,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:35,315 INFO L85 PathProgramCache]: Analyzing trace with hash 18671493, now seen corresponding path program 1 times [2023-11-06 22:21:35,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:21:35,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370618903] [2023-11-06 22:21:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:35,316 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 22:21:35,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:21:35,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:35,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:35,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:21:35,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:35,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:35,411 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 5 [2023-11-06 22:21:35,416 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 22:21:35,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:35,428 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:21:35,434 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:21:35,454 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 22:21:35,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:21:35,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:21:35,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370618903] [2023-11-06 22:21:35,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [370618903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:35,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:35,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:21:35,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64107155] [2023-11-06 22:21:35,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:35,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:35,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:21:35,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:35,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:21:35,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 291 [2023-11-06 22:21:35,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 22:21:35,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:35,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 291 [2023-11-06 22:21:35,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:35,763 INFO L124 PetriNetUnfolderBase]: 102/176 cut-off events. [2023-11-06 22:21:35,763 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-06 22:21:35,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 176 events. 102/176 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 519 event pairs, 69 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 370. Up to 176 conditions per place. [2023-11-06 22:21:35,767 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 29 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-11-06 22:21:35,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 167 flow [2023-11-06 22:21:35,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:35,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-11-06 22:21:35,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261168384879725 [2023-11-06 22:21:35,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-11-06 22:21:35,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-11-06 22:21:35,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:35,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-11-06 22:21:35,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:35,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:21:35,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:21:35,778 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 111 flow. Second operand 3 states and 372 transitions. [2023-11-06 22:21:35,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 167 flow [2023-11-06 22:21:35,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:21:35,786 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 108 flow [2023-11-06 22:21:35,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-11-06 22:21:35,789 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-11-06 22:21:35,789 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 108 flow [2023-11-06 22:21:35,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 22:21:35,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:35,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:21:35,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:36,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:36,008 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:21:36,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:36,008 INFO L85 PathProgramCache]: Analyzing trace with hash 18671513, now seen corresponding path program 1 times [2023-11-06 22:21:36,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:21:36,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562852325] [2023-11-06 22:21:36,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:36,009 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 22:21:36,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:21:36,010 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:36,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:36,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:21:36,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:36,134 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 22:21:36,135 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:21:36,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:21:36,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562852325] [2023-11-06 22:21:36,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562852325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:36,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:36,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:21:36,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230783074] [2023-11-06 22:21:36,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:36,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:21:36,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:21:36,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:21:36,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:21:36,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 291 [2023-11-06 22:21:36,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 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 22:21:36,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:36,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 291 [2023-11-06 22:21:36,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:36,495 INFO L124 PetriNetUnfolderBase]: 114/211 cut-off events. [2023-11-06 22:21:36,495 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-06 22:21:36,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 211 events. 114/211 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 689 event pairs, 82 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 443. Up to 175 conditions per place. [2023-11-06 22:21:36,498 INFO L140 encePairwiseOnDemand]: 282/291 looper letters, 38 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2023-11-06 22:21:36,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 216 flow [2023-11-06 22:21:36,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:21:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:21:36,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 501 transitions. [2023-11-06 22:21:36,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43041237113402064 [2023-11-06 22:21:36,501 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 501 transitions. [2023-11-06 22:21:36,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 501 transitions. [2023-11-06 22:21:36,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:36,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 501 transitions. [2023-11-06 22:21:36,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.25) internal successors, (501), 4 states have internal predecessors, (501), 0 states have call successors, (0), 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 22:21:36,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 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 22:21:36,506 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 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 22:21:36,507 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 108 flow. Second operand 4 states and 501 transitions. [2023-11-06 22:21:36,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 216 flow [2023-11-06 22:21:36,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:21:36,510 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 126 flow [2023-11-06 22:21:36,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2023-11-06 22:21:36,514 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-11-06 22:21:36,514 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 126 flow [2023-11-06 22:21:36,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 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 22:21:36,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:36,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:21:36,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:21:36,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:36,732 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:21:36,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:36,732 INFO L85 PathProgramCache]: Analyzing trace with hash 578503985, now seen corresponding path program 1 times [2023-11-06 22:21:36,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:21:36,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330626622] [2023-11-06 22:21:36,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:36,733 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 22:21:36,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:21:36,734 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:36,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:36,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:21:36,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:36,850 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 22:21:36,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:36,863 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 22:21:36,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:36,888 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 22:21:36,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:36,901 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:21:36,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:36,914 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:21:36,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:36,923 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 22:21:37,065 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 22:21:37,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:21:37,675 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 22:21:37,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:21:37,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330626622] [2023-11-06 22:21:37,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330626622] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:21:37,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:21:37,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-06 22:21:37,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887769066] [2023-11-06 22:21:37,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:21:37,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:21:37,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:21:37,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:21:37,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:21:39,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 291 [2023-11-06 22:21:39,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 126 flow. Second operand has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:39,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:39,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 291 [2023-11-06 22:21:39,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:41,722 INFO L124 PetriNetUnfolderBase]: 228/409 cut-off events. [2023-11-06 22:21:41,722 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-06 22:21:41,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1037 conditions, 409 events. 228/409 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1494 event pairs, 154 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 1021. Up to 173 conditions per place. [2023-11-06 22:21:41,725 INFO L140 encePairwiseOnDemand]: 285/291 looper letters, 61 selfloop transitions, 10 changer transitions 0/71 dead transitions. [2023-11-06 22:21:41,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 378 flow [2023-11-06 22:21:41,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:21:41,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:21:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1029 transitions. [2023-11-06 22:21:41,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3928980526918671 [2023-11-06 22:21:41,732 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1029 transitions. [2023-11-06 22:21:41,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1029 transitions. [2023-11-06 22:21:41,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:41,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1029 transitions. [2023-11-06 22:21:41,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.33333333333333) internal successors, (1029), 9 states have internal predecessors, (1029), 0 states have call successors, (0), 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 22:21:41,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 291.0) internal successors, (2910), 10 states have internal predecessors, (2910), 0 states have call successors, (0), 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 22:21:41,744 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 291.0) internal successors, (2910), 10 states have internal predecessors, (2910), 0 states have call successors, (0), 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 22:21:41,744 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 126 flow. Second operand 9 states and 1029 transitions. [2023-11-06 22:21:41,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 378 flow [2023-11-06 22:21:41,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:21:41,747 INFO L231 Difference]: Finished difference. Result has 46 places, 30 transitions, 152 flow [2023-11-06 22:21:41,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=152, PETRI_PLACES=46, PETRI_TRANSITIONS=30} [2023-11-06 22:21:41,748 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-11-06 22:21:41,749 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 152 flow [2023-11-06 22:21:41,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:41,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:41,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:21:41,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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)] Ended with exit code 0 [2023-11-06 22:21:41,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:41,962 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:21:41,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:41,962 INFO L85 PathProgramCache]: Analyzing trace with hash 578503984, now seen corresponding path program 1 times [2023-11-06 22:21:41,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:21:41,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569675403] [2023-11-06 22:21:41,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:41,963 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 22:21:41,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:21:41,963 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:41,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-06 22:21:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:42,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:21:42,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:42,049 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 22:21:42,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:42,068 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 22:21:42,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:42,078 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 22:21:42,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:42,086 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 22:21:42,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:42,100 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 22:21:42,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:42,110 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 22:21:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:21:42,132 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:21:42,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:21:42,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569675403] [2023-11-06 22:21:42,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569675403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:42,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:42,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:21:42,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551427457] [2023-11-06 22:21:42,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:42,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:21:42,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:21:42,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:21:42,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:21:42,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 291 [2023-11-06 22:21:42,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 30 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:42,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:42,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 291 [2023-11-06 22:21:42,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:42,531 INFO L124 PetriNetUnfolderBase]: 131/249 cut-off events. [2023-11-06 22:21:42,531 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2023-11-06 22:21:42,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 249 events. 131/249 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 786 event pairs, 75 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 654. Up to 242 conditions per place. [2023-11-06 22:21:42,533 INFO L140 encePairwiseOnDemand]: 286/291 looper letters, 21 selfloop transitions, 7 changer transitions 0/28 dead transitions. [2023-11-06 22:21:42,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 28 transitions, 200 flow [2023-11-06 22:21:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:21:42,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:21:42,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 478 transitions. [2023-11-06 22:21:42,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4106529209621993 [2023-11-06 22:21:42,537 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 478 transitions. [2023-11-06 22:21:42,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 478 transitions. [2023-11-06 22:21:42,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:42,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 478 transitions. [2023-11-06 22:21:42,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 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 22:21:42,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 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 22:21:42,543 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 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 22:21:42,543 INFO L175 Difference]: Start difference. First operand has 46 places, 30 transitions, 152 flow. Second operand 4 states and 478 transitions. [2023-11-06 22:21:42,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 28 transitions, 200 flow [2023-11-06 22:21:42,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 28 transitions, 184 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:21:42,546 INFO L231 Difference]: Finished difference. Result has 42 places, 28 transitions, 142 flow [2023-11-06 22:21:42,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=42, PETRI_TRANSITIONS=28} [2023-11-06 22:21:42,547 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-11-06 22:21:42,547 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 28 transitions, 142 flow [2023-11-06 22:21:42,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:21:42,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:42,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:21:42,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:21:42,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:42,759 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:21:42,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash 763450140, now seen corresponding path program 1 times [2023-11-06 22:21:42,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:21:42,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058497701] [2023-11-06 22:21:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:42,760 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 22:21:42,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:21:42,761 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:42,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-06 22:21:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:42,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:21:42,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:42,878 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 22:21:42,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:21:42,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:21:42,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058497701] [2023-11-06 22:21:42,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058497701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:42,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:42,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:21:42,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626943139] [2023-11-06 22:21:42,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:42,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:21:42,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:21:42,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:21:42,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:21:43,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 291 [2023-11-06 22:21:43,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 28 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 115.5) internal successors, (462), 4 states have internal predecessors, (462), 0 states have call successors, (0), 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 22:21:43,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:43,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 291 [2023-11-06 22:21:43,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:43,188 INFO L124 PetriNetUnfolderBase]: 93/189 cut-off events. [2023-11-06 22:21:43,189 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-11-06 22:21:43,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 189 events. 93/189 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 574 event pairs, 51 based on Foata normal form. 1/190 useless extension candidates. Maximal degree in co-relation 498. Up to 189 conditions per place. [2023-11-06 22:21:43,191 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 25 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-11-06 22:21:43,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 180 flow [2023-11-06 22:21:43,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:43,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:43,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-11-06 22:21:43,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146620847651776 [2023-11-06 22:21:43,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-11-06 22:21:43,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-11-06 22:21:43,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:43,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-11-06 22:21:43,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 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 22:21:43,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:21:43,204 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:21:43,204 INFO L175 Difference]: Start difference. First operand has 42 places, 28 transitions, 142 flow. Second operand 3 states and 362 transitions. [2023-11-06 22:21:43,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 180 flow [2023-11-06 22:21:43,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 151 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-06 22:21:43,211 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 101 flow [2023-11-06 22:21:43,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-11-06 22:21:43,212 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-11-06 22:21:43,213 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 101 flow [2023-11-06 22:21:43,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.5) internal successors, (462), 4 states have internal predecessors, (462), 0 states have call successors, (0), 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 22:21:43,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:43,214 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:21:43,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:21:43,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:43,425 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:21:43,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:43,426 INFO L85 PathProgramCache]: Analyzing trace with hash 753430945, now seen corresponding path program 2 times [2023-11-06 22:21:43,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:21:43,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92604657] [2023-11-06 22:21:43,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:21:43,426 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 22:21:43,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:21:43,428 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:43,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-06 22:21:43,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:21:43,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:21:43,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:21:43,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:43,540 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 22:21:43,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:43,556 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 22:21:43,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:43,575 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 22:21:43,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:43,587 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 13 treesize of output 1 [2023-11-06 22:21:43,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:43,612 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 22:21:43,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:43,624 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 22:21:43,819 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 22:21:43,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:21:44,673 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 22:21:44,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:21:44,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92604657] [2023-11-06 22:21:44,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92604657] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:21:44,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:21:44,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:21:44,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255356873] [2023-11-06 22:21:44,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:21:44,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:21:44,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:21:44,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:21:44,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:21:47,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 291 [2023-11-06 22:21:47,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 101 flow. Second operand has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 0 states have call successors, (0), 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 22:21:47,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:47,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 291 [2023-11-06 22:21:47,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:50,588 INFO L124 PetriNetUnfolderBase]: 99/201 cut-off events. [2023-11-06 22:21:50,588 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-11-06 22:21:50,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 201 events. 99/201 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 635 event pairs, 51 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 524. Up to 192 conditions per place. [2023-11-06 22:21:50,589 INFO L140 encePairwiseOnDemand]: 287/291 looper letters, 17 selfloop transitions, 21 changer transitions 0/38 dead transitions. [2023-11-06 22:21:50,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 225 flow [2023-11-06 22:21:50,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:21:50,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:21:50,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1376 transitions. [2023-11-06 22:21:50,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3940435280641466 [2023-11-06 22:21:50,597 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1376 transitions. [2023-11-06 22:21:50,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1376 transitions. [2023-11-06 22:21:50,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:50,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1376 transitions. [2023-11-06 22:21:50,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.66666666666667) internal successors, (1376), 12 states have internal predecessors, (1376), 0 states have call successors, (0), 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 22:21:50,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 291.0) internal successors, (3783), 13 states have internal predecessors, (3783), 0 states have call successors, (0), 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 22:21:50,612 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 291.0) internal successors, (3783), 13 states have internal predecessors, (3783), 0 states have call successors, (0), 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 22:21:50,612 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 101 flow. Second operand 12 states and 1376 transitions. [2023-11-06 22:21:50,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 225 flow [2023-11-06 22:21:50,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 38 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:21:50,615 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 224 flow [2023-11-06 22:21:50,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=224, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2023-11-06 22:21:50,616 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 18 predicate places. [2023-11-06 22:21:50,616 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 224 flow [2023-11-06 22:21:50,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 0 states have call successors, (0), 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 22:21:50,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:50,618 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-11-06 22:21:50,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:21:50,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:50,823 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:21:50,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:50,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1802269287, now seen corresponding path program 2 times [2023-11-06 22:21:50,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:21:50,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394894368] [2023-11-06 22:21:50,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:21:50,824 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 22:21:50,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:21:50,825 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:50,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-06 22:21:50,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:21:50,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:21:50,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:21:50,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:50,949 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 22:21:50,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:50,977 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 22:21:50,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:50,987 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 22:21:50,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:50,999 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 22:21:51,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:51,013 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 22:21:51,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:51,020 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 22:21:51,148 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:21:51,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:21:51,148 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:21:51,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394894368] [2023-11-06 22:21:51,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394894368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:51,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:51,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:21:51,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47509443] [2023-11-06 22:21:51,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:51,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:21:51,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:21:51,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:21:51,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:21:51,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 291 [2023-11-06 22:21:51,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 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 22:21:51,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:51,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 291 [2023-11-06 22:21:51,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:51,457 INFO L124 PetriNetUnfolderBase]: 80/168 cut-off events. [2023-11-06 22:21:51,457 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2023-11-06 22:21:51,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 168 events. 80/168 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 485 event pairs, 36 based on Foata normal form. 12/178 useless extension candidates. Maximal degree in co-relation 445. Up to 155 conditions per place. [2023-11-06 22:21:51,458 INFO L140 encePairwiseOnDemand]: 287/291 looper letters, 24 selfloop transitions, 12 changer transitions 0/36 dead transitions. [2023-11-06 22:21:51,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 36 transitions, 280 flow [2023-11-06 22:21:51,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:21:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:21:51,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 470 transitions. [2023-11-06 22:21:51,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40378006872852235 [2023-11-06 22:21:51,463 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 470 transitions. [2023-11-06 22:21:51,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 470 transitions. [2023-11-06 22:21:51,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:51,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 470 transitions. [2023-11-06 22:21:51,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.5) internal successors, (470), 4 states have internal predecessors, (470), 0 states have call successors, (0), 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 22:21:51,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 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 22:21:51,469 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 0 states have call successors, (0), 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 22:21:51,469 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 224 flow. Second operand 4 states and 470 transitions. [2023-11-06 22:21:51,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 36 transitions, 280 flow [2023-11-06 22:21:51,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 36 transitions, 241 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-11-06 22:21:51,472 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 193 flow [2023-11-06 22:21:51,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2023-11-06 22:21:51,473 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2023-11-06 22:21:51,473 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 193 flow [2023-11-06 22:21:51,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 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 22:21:51,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:51,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:51,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:21:51,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:51,686 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:21:51,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:51,686 INFO L85 PathProgramCache]: Analyzing trace with hash 618103260, now seen corresponding path program 1 times [2023-11-06 22:21:51,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:21:51,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892792628] [2023-11-06 22:21:51,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:51,687 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 22:21:51,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:21:51,688 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:51,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-06 22:21:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:51,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:21:51,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:51,828 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 22:21:51,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:21:51,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:21:51,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892792628] [2023-11-06 22:21:51,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892792628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:51,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:51,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:21:51,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553823629] [2023-11-06 22:21:51,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:51,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:21:51,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:21:51,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:21:51,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:21:51,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 291 [2023-11-06 22:21:51,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 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 22:21:51,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:51,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 291 [2023-11-06 22:21:51,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:52,026 INFO L124 PetriNetUnfolderBase]: 128/254 cut-off events. [2023-11-06 22:21:52,026 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2023-11-06 22:21:52,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 254 events. 128/254 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 851 event pairs, 36 based on Foata normal form. 4/258 useless extension candidates. Maximal degree in co-relation 643. Up to 146 conditions per place. [2023-11-06 22:21:52,028 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 39 selfloop transitions, 2 changer transitions 3/44 dead transitions. [2023-11-06 22:21:52,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 303 flow [2023-11-06 22:21:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:52,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:52,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2023-11-06 22:21:52,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-11-06 22:21:52,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2023-11-06 22:21:52,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2023-11-06 22:21:52,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:52,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2023-11-06 22:21:52,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 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 22:21:52,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:21:52,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:21:52,036 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 193 flow. Second operand 3 states and 388 transitions. [2023-11-06 22:21:52,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 303 flow [2023-11-06 22:21:52,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:21:52,040 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 185 flow [2023-11-06 22:21:52,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-11-06 22:21:52,041 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-11-06 22:21:52,042 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 185 flow [2023-11-06 22:21:52,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 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 22:21:52,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:52,042 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-11-06 22:21:52,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-06 22:21:52,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:52,254 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:21:52,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:52,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1605956959, now seen corresponding path program 3 times [2023-11-06 22:21:52,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:21:52,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275341215] [2023-11-06 22:21:52,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:21:52,255 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 22:21:52,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:21:52,256 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:21:52,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-06 22:21:52,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-06 22:21:52,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:21:52,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:21:52,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:52,523 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-06 22:21:52,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:52,545 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 22:21:52,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:52,561 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 22:21:52,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:52,570 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 22:21:52,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:52,580 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 22:21:52,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:21:52,593 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:21:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:53,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:21:56,190 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:56,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:21:56,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275341215] [2023-11-06 22:21:56,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [275341215] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:21:56,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:21:56,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2023-11-06 22:21:56,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824495308] [2023-11-06 22:21:56,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:21:56,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:21:56,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:21:56,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:21:56,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:22:10,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 291 [2023-11-06 22:22:10,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 185 flow. Second operand has 24 states, 24 states have (on average 112.0) internal successors, (2688), 24 states have internal predecessors, (2688), 0 states have call successors, (0), 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 22:22:10,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:10,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 291 [2023-11-06 22:22:10,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:31,157 INFO L124 PetriNetUnfolderBase]: 131/251 cut-off events. [2023-11-06 22:22:31,157 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-11-06 22:22:31,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 251 events. 131/251 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 724 event pairs, 63 based on Foata normal form. 12/250 useless extension candidates. Maximal degree in co-relation 746. Up to 230 conditions per place. [2023-11-06 22:22:31,160 INFO L140 encePairwiseOnDemand]: 287/291 looper letters, 16 selfloop transitions, 44 changer transitions 0/60 dead transitions. [2023-11-06 22:22:31,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 461 flow [2023-11-06 22:22:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:22:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:22:31,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2735 transitions. [2023-11-06 22:22:31,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916093928980527 [2023-11-06 22:22:31,174 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2735 transitions. [2023-11-06 22:22:31,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2735 transitions. [2023-11-06 22:22:31,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:31,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2735 transitions. [2023-11-06 22:22:31,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 113.95833333333333) internal successors, (2735), 24 states have internal predecessors, (2735), 0 states have call successors, (0), 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 22:22:31,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 291.0) internal successors, (7275), 25 states have internal predecessors, (7275), 0 states have call successors, (0), 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 22:22:31,202 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 291.0) internal successors, (7275), 25 states have internal predecessors, (7275), 0 states have call successors, (0), 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 22:22:31,202 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 185 flow. Second operand 24 states and 2735 transitions. [2023-11-06 22:22:31,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 461 flow [2023-11-06 22:22:31,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 60 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:22:31,207 INFO L231 Difference]: Finished difference. Result has 80 places, 60 transitions, 491 flow [2023-11-06 22:22:31,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=491, PETRI_PLACES=80, PETRI_TRANSITIONS=60} [2023-11-06 22:22:31,208 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 46 predicate places. [2023-11-06 22:22:31,209 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 60 transitions, 491 flow [2023-11-06 22:22:31,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 112.0) internal successors, (2688), 24 states have internal predecessors, (2688), 0 states have call successors, (0), 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 22:22:31,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:31,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:31,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:22:31,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:22:31,426 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:22:31,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:31,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1822647628, now seen corresponding path program 1 times [2023-11-06 22:22:31,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:31,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136841524] [2023-11-06 22:22:31,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:31,427 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 22:22:31,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:31,429 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:22:31,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-06 22:22:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:31,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:22:31,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:31,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:22:31,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:22:31,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:31,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136841524] [2023-11-06 22:22:31,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136841524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:31,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:31,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:22:31,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898000425] [2023-11-06 22:22:31,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:31,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:22:31,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:31,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:22:31,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:22:31,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 291 [2023-11-06 22:22:31,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 60 transitions, 491 flow. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 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 22:22:31,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:31,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 291 [2023-11-06 22:22:31,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:31,828 INFO L124 PetriNetUnfolderBase]: 173/344 cut-off events. [2023-11-06 22:22:31,829 INFO L125 PetriNetUnfolderBase]: For 274/274 co-relation queries the response was YES. [2023-11-06 22:22:31,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 344 events. 173/344 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1266 event pairs, 51 based on Foata normal form. 18/360 useless extension candidates. Maximal degree in co-relation 1019. Up to 220 conditions per place. [2023-11-06 22:22:31,832 INFO L140 encePairwiseOnDemand]: 288/291 looper letters, 62 selfloop transitions, 2 changer transitions 5/69 dead transitions. [2023-11-06 22:22:31,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 69 transitions, 652 flow [2023-11-06 22:22:31,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:31,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:31,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2023-11-06 22:22:31,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43871706758304696 [2023-11-06 22:22:31,836 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2023-11-06 22:22:31,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2023-11-06 22:22:31,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:31,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2023-11-06 22:22:31,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 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 22:22:31,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:22:31,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 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 22:22:31,852 INFO L175 Difference]: Start difference. First operand has 80 places, 60 transitions, 491 flow. Second operand 3 states and 383 transitions. [2023-11-06 22:22:31,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 69 transitions, 652 flow [2023-11-06 22:22:31,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 69 transitions, 512 flow, removed 50 selfloop flow, removed 11 redundant places. [2023-11-06 22:22:31,861 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 365 flow [2023-11-06 22:22:31,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=365, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2023-11-06 22:22:31,863 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 38 predicate places. [2023-11-06 22:22:31,863 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 365 flow [2023-11-06 22:22:31,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 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 22:22:31,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:31,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:31,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:22:32,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:22:32,078 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:22:32,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:32,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1605572761, now seen corresponding path program 1 times [2023-11-06 22:22:32,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:32,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976279995] [2023-11-06 22:22:32,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:32,080 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 22:22:32,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:32,081 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:22:32,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-06 22:22:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:32,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:22:32,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:32,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:22:32,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:22:32,456 INFO L322 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2023-11-06 22:22:32,457 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 27 [2023-11-06 22:22:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:22:32,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:32,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976279995] [2023-11-06 22:22:32,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976279995] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:22:32,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:22:32,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2023-11-06 22:22:32,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575699721] [2023-11-06 22:22:32,516 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:22:32,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:22:32,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:32,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:22:32,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:22:32,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 291 [2023-11-06 22:22:32,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 365 flow. Second operand has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 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 22:22:32,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:32,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 291 [2023-11-06 22:22:32,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:33,323 INFO L124 PetriNetUnfolderBase]: 275/530 cut-off events. [2023-11-06 22:22:33,324 INFO L125 PetriNetUnfolderBase]: For 498/498 co-relation queries the response was YES. [2023-11-06 22:22:33,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1591 conditions, 530 events. 275/530 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2260 event pairs, 39 based on Foata normal form. 3/532 useless extension candidates. Maximal degree in co-relation 1556. Up to 174 conditions per place. [2023-11-06 22:22:33,329 INFO L140 encePairwiseOnDemand]: 286/291 looper letters, 71 selfloop transitions, 6 changer transitions 9/86 dead transitions. [2023-11-06 22:22:33,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 86 transitions, 613 flow [2023-11-06 22:22:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:22:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:22:33,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 603 transitions. [2023-11-06 22:22:33,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144329896907217 [2023-11-06 22:22:33,335 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 603 transitions. [2023-11-06 22:22:33,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 603 transitions. [2023-11-06 22:22:33,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:33,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 603 transitions. [2023-11-06 22:22:33,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.6) internal successors, (603), 5 states have internal predecessors, (603), 0 states have call successors, (0), 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 22:22:33,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 0 states have call successors, (0), 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 22:22:33,342 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 291.0) internal successors, (1746), 6 states have internal predecessors, (1746), 0 states have call successors, (0), 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 22:22:33,342 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 365 flow. Second operand 5 states and 603 transitions. [2023-11-06 22:22:33,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 86 transitions, 613 flow [2023-11-06 22:22:33,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 86 transitions, 609 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:22:33,351 INFO L231 Difference]: Finished difference. Result has 77 places, 64 transitions, 402 flow [2023-11-06 22:22:33,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=402, PETRI_PLACES=77, PETRI_TRANSITIONS=64} [2023-11-06 22:22:33,353 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 43 predicate places. [2023-11-06 22:22:33,353 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 64 transitions, 402 flow [2023-11-06 22:22:33,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 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 22:22:33,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:33,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:33,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:22:33,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:22:33,567 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:22:33,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:33,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1709851643, now seen corresponding path program 2 times [2023-11-06 22:22:33,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:33,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201305764] [2023-11-06 22:22:33,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:22:33,568 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 22:22:33,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:33,569 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:22:33,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-06 22:22:33,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:22:33,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:22:33,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:22:33,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:33,753 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 39 treesize of output 37 [2023-11-06 22:22:33,904 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2023-11-06 22:22:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:22:34,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:22:34,327 INFO L322 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2023-11-06 22:22:34,327 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 95 treesize of output 73 [2023-11-06 22:22:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:22:34,615 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:34,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201305764] [2023-11-06 22:22:34,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201305764] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:22:34,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:22:34,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:22:34,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553658473] [2023-11-06 22:22:34,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:22:34,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:22:34,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:34,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:22:34,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:22:35,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 291 [2023-11-06 22:22:35,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 64 transitions, 402 flow. Second operand has 9 states, 9 states have (on average 107.22222222222223) internal successors, (965), 9 states have internal predecessors, (965), 0 states have call successors, (0), 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 22:22:35,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:35,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 291 [2023-11-06 22:22:35,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:36,204 INFO L124 PetriNetUnfolderBase]: 323/617 cut-off events. [2023-11-06 22:22:36,204 INFO L125 PetriNetUnfolderBase]: For 795/795 co-relation queries the response was YES. [2023-11-06 22:22:36,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1975 conditions, 617 events. 323/617 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2748 event pairs, 54 based on Foata normal form. 3/619 useless extension candidates. Maximal degree in co-relation 1937. Up to 192 conditions per place. [2023-11-06 22:22:36,210 INFO L140 encePairwiseOnDemand]: 286/291 looper letters, 49 selfloop transitions, 28 changer transitions 9/86 dead transitions. [2023-11-06 22:22:36,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 639 flow [2023-11-06 22:22:36,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:22:36,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:22:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 672 transitions. [2023-11-06 22:22:36,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3848797250859107 [2023-11-06 22:22:36,218 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 672 transitions. [2023-11-06 22:22:36,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 672 transitions. [2023-11-06 22:22:36,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:36,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 672 transitions. [2023-11-06 22:22:36,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 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 22:22:36,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 291.0) internal successors, (2037), 7 states have internal predecessors, (2037), 0 states have call successors, (0), 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 22:22:36,228 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 291.0) internal successors, (2037), 7 states have internal predecessors, (2037), 0 states have call successors, (0), 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 22:22:36,228 INFO L175 Difference]: Start difference. First operand has 77 places, 64 transitions, 402 flow. Second operand 6 states and 672 transitions. [2023-11-06 22:22:36,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 639 flow [2023-11-06 22:22:36,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 86 transitions, 634 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:22:36,241 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 469 flow [2023-11-06 22:22:36,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=469, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2023-11-06 22:22:36,242 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 47 predicate places. [2023-11-06 22:22:36,243 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 469 flow [2023-11-06 22:22:36,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.22222222222223) internal successors, (965), 9 states have internal predecessors, (965), 0 states have call successors, (0), 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 22:22:36,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:36,243 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:36,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:22:36,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:22:36,451 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:22:36,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:36,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1352349041, now seen corresponding path program 3 times [2023-11-06 22:22:36,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:36,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417119541] [2023-11-06 22:22:36,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:22:36,453 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 22:22:36,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:36,454 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:22:36,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-06 22:22:36,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:22:36,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:22:36,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:22:36,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:36,643 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:22:36,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:36,689 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:22:36,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:36,705 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 22:22:36,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:36,715 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 22:22:36,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:36,739 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 22:22:36,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:36,749 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 22:22:36,817 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 13 treesize of output 9 [2023-11-06 22:22:37,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:37,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:22:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:37,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:37,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417119541] [2023-11-06 22:22:37,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417119541] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:22:37,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:22:37,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-06 22:22:37,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342903037] [2023-11-06 22:22:37,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:22:37,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:22:37,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:37,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:22:37,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:22:40,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 291 [2023-11-06 22:22:40,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 469 flow. Second operand has 12 states, 12 states have (on average 107.41666666666667) internal successors, (1289), 12 states have internal predecessors, (1289), 0 states have call successors, (0), 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 22:22:40,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:40,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 291 [2023-11-06 22:22:40,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:41,638 INFO L124 PetriNetUnfolderBase]: 508/1012 cut-off events. [2023-11-06 22:22:41,638 INFO L125 PetriNetUnfolderBase]: For 2474/2474 co-relation queries the response was YES. [2023-11-06 22:22:41,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3234 conditions, 1012 events. 508/1012 cut-off events. For 2474/2474 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5416 event pairs, 148 based on Foata normal form. 67/1079 useless extension candidates. Maximal degree in co-relation 3195. Up to 363 conditions per place. [2023-11-06 22:22:41,647 INFO L140 encePairwiseOnDemand]: 286/291 looper letters, 77 selfloop transitions, 11 changer transitions 27/115 dead transitions. [2023-11-06 22:22:41,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 115 transitions, 924 flow [2023-11-06 22:22:41,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:22:41,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:22:41,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1014 transitions. [2023-11-06 22:22:41,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38717067583046966 [2023-11-06 22:22:41,654 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1014 transitions. [2023-11-06 22:22:41,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1014 transitions. [2023-11-06 22:22:41,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:41,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1014 transitions. [2023-11-06 22:22:41,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.66666666666667) internal successors, (1014), 9 states have internal predecessors, (1014), 0 states have call successors, (0), 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 22:22:41,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 291.0) internal successors, (2910), 10 states have internal predecessors, (2910), 0 states have call successors, (0), 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 22:22:41,662 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 291.0) internal successors, (2910), 10 states have internal predecessors, (2910), 0 states have call successors, (0), 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 22:22:41,662 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 469 flow. Second operand 9 states and 1014 transitions. [2023-11-06 22:22:41,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 115 transitions, 924 flow [2023-11-06 22:22:41,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 115 transitions, 878 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-06 22:22:41,674 INFO L231 Difference]: Finished difference. Result has 89 places, 71 transitions, 554 flow [2023-11-06 22:22:41,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=554, PETRI_PLACES=89, PETRI_TRANSITIONS=71} [2023-11-06 22:22:41,676 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 55 predicate places. [2023-11-06 22:22:41,676 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 71 transitions, 554 flow [2023-11-06 22:22:41,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 107.41666666666667) internal successors, (1289), 12 states have internal predecessors, (1289), 0 states have call successors, (0), 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 22:22:41,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:41,677 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:41,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:22:41,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:22:41,901 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:22:41,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:41,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1949334678, now seen corresponding path program 4 times [2023-11-06 22:22:41,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:41,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121396827] [2023-11-06 22:22:41,902 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:22:41,902 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 22:22:41,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:41,903 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:22:41,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-06 22:22:42,049 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:22:42,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:22:42,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:22:42,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:42,205 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:22:42,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:22:42,318 INFO L322 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2023-11-06 22:22:42,318 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 27 [2023-11-06 22:22:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:22:42,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:42,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121396827] [2023-11-06 22:22:42,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121396827] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:22:42,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:22:42,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-06 22:22:42,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206457431] [2023-11-06 22:22:42,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:22:42,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:22:42,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:42,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:22:42,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:22:42,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 291 [2023-11-06 22:22:42,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 71 transitions, 554 flow. Second operand has 8 states, 8 states have (on average 115.375) internal successors, (923), 8 states have internal predecessors, (923), 0 states have call successors, (0), 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 22:22:42,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:42,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 291 [2023-11-06 22:22:42,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:43,967 INFO L124 PetriNetUnfolderBase]: 582/1110 cut-off events. [2023-11-06 22:22:43,968 INFO L125 PetriNetUnfolderBase]: For 3139/3139 co-relation queries the response was YES. [2023-11-06 22:22:43,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4082 conditions, 1110 events. 582/1110 cut-off events. For 3139/3139 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5891 event pairs, 66 based on Foata normal form. 8/1117 useless extension candidates. Maximal degree in co-relation 4041. Up to 317 conditions per place. [2023-11-06 22:22:43,977 INFO L140 encePairwiseOnDemand]: 286/291 looper letters, 82 selfloop transitions, 21 changer transitions 31/134 dead transitions. [2023-11-06 22:22:43,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 134 transitions, 1060 flow [2023-11-06 22:22:43,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:22:43,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:22:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1208 transitions. [2023-11-06 22:22:43,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41512027491408937 [2023-11-06 22:22:43,982 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1208 transitions. [2023-11-06 22:22:43,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1208 transitions. [2023-11-06 22:22:43,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:43,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1208 transitions. [2023-11-06 22:22:43,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.8) internal successors, (1208), 10 states have internal predecessors, (1208), 0 states have call successors, (0), 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 22:22:43,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 291.0) internal successors, (3201), 11 states have internal predecessors, (3201), 0 states have call successors, (0), 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 22:22:43,992 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 291.0) internal successors, (3201), 11 states have internal predecessors, (3201), 0 states have call successors, (0), 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 22:22:43,992 INFO L175 Difference]: Start difference. First operand has 89 places, 71 transitions, 554 flow. Second operand 10 states and 1208 transitions. [2023-11-06 22:22:43,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 134 transitions, 1060 flow [2023-11-06 22:22:44,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 134 transitions, 1014 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-11-06 22:22:44,008 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 682 flow [2023-11-06 22:22:44,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=682, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2023-11-06 22:22:44,009 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 61 predicate places. [2023-11-06 22:22:44,009 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 682 flow [2023-11-06 22:22:44,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.375) internal successors, (923), 8 states have internal predecessors, (923), 0 states have call successors, (0), 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 22:22:44,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:44,010 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:44,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-06 22:22:44,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:22:44,225 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:22:44,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash 495215956, now seen corresponding path program 5 times [2023-11-06 22:22:44,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:44,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503899274] [2023-11-06 22:22:44,226 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:22:44,226 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 22:22:44,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:44,227 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:22:44,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-06 22:22:44,404 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:22:44,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:22:44,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:22:44,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:22:44,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:22:44,828 INFO L322 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2023-11-06 22:22:44,828 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 29 [2023-11-06 22:22:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:22:44,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:44,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503899274] [2023-11-06 22:22:44,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503899274] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:22:44,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:22:44,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:22:44,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751660858] [2023-11-06 22:22:44,960 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:22:44,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:22:44,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:44,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:22:44,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:22:45,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 291 [2023-11-06 22:22:45,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 682 flow. Second operand has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 0 states have call successors, (0), 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 22:22:45,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:45,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 291 [2023-11-06 22:22:45,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:47,764 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 22:22:50,254 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 22:22:50,947 INFO L124 PetriNetUnfolderBase]: 682/1292 cut-off events. [2023-11-06 22:22:50,947 INFO L125 PetriNetUnfolderBase]: For 4513/4513 co-relation queries the response was YES. [2023-11-06 22:22:50,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4961 conditions, 1292 events. 682/1292 cut-off events. For 4513/4513 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7124 event pairs, 60 based on Foata normal form. 2/1293 useless extension candidates. Maximal degree in co-relation 4916. Up to 252 conditions per place. [2023-11-06 22:22:50,957 INFO L140 encePairwiseOnDemand]: 286/291 looper letters, 86 selfloop transitions, 24 changer transitions 28/138 dead transitions. [2023-11-06 22:22:50,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 138 transitions, 1167 flow [2023-11-06 22:22:50,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:22:50,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:22:50,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1204 transitions. [2023-11-06 22:22:50,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4137457044673539 [2023-11-06 22:22:50,962 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1204 transitions. [2023-11-06 22:22:50,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1204 transitions. [2023-11-06 22:22:50,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:50,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1204 transitions. [2023-11-06 22:22:50,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.4) internal successors, (1204), 10 states have internal predecessors, (1204), 0 states have call successors, (0), 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 22:22:50,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 291.0) internal successors, (3201), 11 states have internal predecessors, (3201), 0 states have call successors, (0), 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 22:22:50,970 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 291.0) internal successors, (3201), 11 states have internal predecessors, (3201), 0 states have call successors, (0), 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 22:22:50,971 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 682 flow. Second operand 10 states and 1204 transitions. [2023-11-06 22:22:50,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 138 transitions, 1167 flow [2023-11-06 22:22:50,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 138 transitions, 1123 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-11-06 22:22:50,991 INFO L231 Difference]: Finished difference. Result has 105 places, 83 transitions, 762 flow [2023-11-06 22:22:50,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=762, PETRI_PLACES=105, PETRI_TRANSITIONS=83} [2023-11-06 22:22:50,992 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 71 predicate places. [2023-11-06 22:22:50,992 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 83 transitions, 762 flow [2023-11-06 22:22:50,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 0 states have call successors, (0), 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 22:22:50,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:50,993 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:51,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:22:51,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:22:51,208 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:22:51,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:51,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1064169492, now seen corresponding path program 6 times [2023-11-06 22:22:51,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:51,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090189306] [2023-11-06 22:22:51,209 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:22:51,209 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 22:22:51,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:51,210 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:22:51,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-06 22:22:51,465 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-06 22:22:51,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:22:51,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:22:51,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:51,480 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 39 treesize of output 37 [2023-11-06 22:22:51,521 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:22:51,675 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2023-11-06 22:22:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:22:51,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:22:51,988 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_461 (Array (_ BitVec 32) (_ BitVec 8)))) (= (_ bv5 32) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_461) c_~queue~0.base)) (.cse1 (bvmul (_ bv4 32) c_~front~0))) (concat (concat (concat (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv7 32))) (select .cse0 (bvadd c_~queue~0.offset (_ bv6 32) .cse1))) (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv5 32)))) (select .cse0 (bvadd c_~queue~0.offset (_ bv4 32) .cse1)))))) is different from false [2023-11-06 22:22:54,707 INFO L322 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2023-11-06 22:22:54,707 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 476 treesize of output 416 [2023-11-06 22:22:54,732 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:54,733 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:54,735 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:54,736 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:54,737 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:54,738 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:54,738 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:54,739 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:54,747 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:54,749 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:54,751 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:54,756 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:22:54,831 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:22:54,831 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 120 treesize of output 112 [2023-11-06 22:22:54,850 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:22:54,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 84 treesize of output 28 [2023-11-06 22:22:56,299 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 3 trivial. 2 not checked. [2023-11-06 22:22:56,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:56,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090189306] [2023-11-06 22:22:56,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090189306] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:22:56,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:22:56,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-11-06 22:22:56,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467802669] [2023-11-06 22:22:56,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:22:56,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:22:56,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:56,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:22:56,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=4, NotChecked=20, Total=156 [2023-11-06 22:22:56,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 291 [2023-11-06 22:22:56,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 83 transitions, 762 flow. Second operand has 13 states, 13 states have (on average 93.92307692307692) internal successors, (1221), 13 states have internal predecessors, (1221), 0 states have call successors, (0), 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 22:22:56,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:56,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 291 [2023-11-06 22:22:56,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:58,745 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 22:23:04,059 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 22:23:07,393 INFO L124 PetriNetUnfolderBase]: 714/1350 cut-off events. [2023-11-06 22:23:07,393 INFO L125 PetriNetUnfolderBase]: For 4983/4983 co-relation queries the response was YES. [2023-11-06 22:23:07,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5329 conditions, 1350 events. 714/1350 cut-off events. For 4983/4983 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7497 event pairs, 70 based on Foata normal form. 2/1351 useless extension candidates. Maximal degree in co-relation 5280. Up to 269 conditions per place. [2023-11-06 22:23:07,406 INFO L140 encePairwiseOnDemand]: 286/291 looper letters, 64 selfloop transitions, 46 changer transitions 28/138 dead transitions. [2023-11-06 22:23:07,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 138 transitions, 1206 flow [2023-11-06 22:23:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:23:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:23:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1095 transitions. [2023-11-06 22:23:07,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34208059981255856 [2023-11-06 22:23:07,412 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1095 transitions. [2023-11-06 22:23:07,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1095 transitions. [2023-11-06 22:23:07,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:07,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1095 transitions. [2023-11-06 22:23:07,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 99.54545454545455) internal successors, (1095), 11 states have internal predecessors, (1095), 0 states have call successors, (0), 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 22:23:07,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 291.0) internal successors, (3492), 12 states have internal predecessors, (3492), 0 states have call successors, (0), 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 22:23:07,449 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 291.0) internal successors, (3492), 12 states have internal predecessors, (3492), 0 states have call successors, (0), 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 22:23:07,449 INFO L175 Difference]: Start difference. First operand has 105 places, 83 transitions, 762 flow. Second operand 11 states and 1095 transitions. [2023-11-06 22:23:07,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 138 transitions, 1206 flow [2023-11-06 22:23:07,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 138 transitions, 1172 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-06 22:23:07,477 INFO L231 Difference]: Finished difference. Result has 113 places, 84 transitions, 848 flow [2023-11-06 22:23:07,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=848, PETRI_PLACES=113, PETRI_TRANSITIONS=84} [2023-11-06 22:23:07,478 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 79 predicate places. [2023-11-06 22:23:07,478 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 84 transitions, 848 flow [2023-11-06 22:23:07,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 93.92307692307692) internal successors, (1221), 13 states have internal predecessors, (1221), 0 states have call successors, (0), 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 22:23:07,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:07,479 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:07,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:23:07,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:23:07,695 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:23:07,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:07,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1829154908, now seen corresponding path program 7 times [2023-11-06 22:23:07,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:23:07,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059482183] [2023-11-06 22:23:07,696 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:23:07,696 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 22:23:07,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:23:07,697 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:23:07,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 (24)] Waiting until timeout for monitored process [2023-11-06 22:23:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:23:07,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:23:07,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:07,962 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-06 22:23:07,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:07,992 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 22:23:08,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:08,005 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 22:23:08,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:08,021 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 22:23:08,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:08,043 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 22:23:08,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:08,061 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 22:23:08,232 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 13 treesize of output 9 [2023-11-06 22:23:08,789 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:08,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:23:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:10,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:23:10,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059482183] [2023-11-06 22:23:10,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059482183] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:23:10,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:23:10,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-11-06 22:23:10,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272569755] [2023-11-06 22:23:10,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:23:10,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:23:10,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:23:10,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:23:10,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:23:14,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 291 [2023-11-06 22:23:14,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 84 transitions, 848 flow. Second operand has 18 states, 18 states have (on average 105.94444444444444) internal successors, (1907), 18 states have internal predecessors, (1907), 0 states have call successors, (0), 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 22:23:14,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:14,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 291 [2023-11-06 22:23:14,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:16,787 INFO L124 PetriNetUnfolderBase]: 940/1803 cut-off events. [2023-11-06 22:23:16,787 INFO L125 PetriNetUnfolderBase]: For 7575/7575 co-relation queries the response was YES. [2023-11-06 22:23:16,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7126 conditions, 1803 events. 940/1803 cut-off events. For 7575/7575 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11070 event pairs, 513 based on Foata normal form. 24/1827 useless extension candidates. Maximal degree in co-relation 7076. Up to 1346 conditions per place. [2023-11-06 22:23:16,806 INFO L140 encePairwiseOnDemand]: 285/291 looper letters, 78 selfloop transitions, 5 changer transitions 74/157 dead transitions. [2023-11-06 22:23:16,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 157 transitions, 1576 flow [2023-11-06 22:23:16,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:23:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:23:16,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1544 transitions. [2023-11-06 22:23:16,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3789887088856161 [2023-11-06 22:23:16,811 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1544 transitions. [2023-11-06 22:23:16,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1544 transitions. [2023-11-06 22:23:16,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:16,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1544 transitions. [2023-11-06 22:23:16,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 110.28571428571429) internal successors, (1544), 14 states have internal predecessors, (1544), 0 states have call successors, (0), 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 22:23:16,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 291.0) internal successors, (4365), 15 states have internal predecessors, (4365), 0 states have call successors, (0), 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 22:23:16,823 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 291.0) internal successors, (4365), 15 states have internal predecessors, (4365), 0 states have call successors, (0), 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 22:23:16,824 INFO L175 Difference]: Start difference. First operand has 113 places, 84 transitions, 848 flow. Second operand 14 states and 1544 transitions. [2023-11-06 22:23:16,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 157 transitions, 1576 flow [2023-11-06 22:23:16,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 157 transitions, 1445 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-11-06 22:23:16,857 INFO L231 Difference]: Finished difference. Result has 125 places, 83 transitions, 787 flow [2023-11-06 22:23:16,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=787, PETRI_PLACES=125, PETRI_TRANSITIONS=83} [2023-11-06 22:23:16,858 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 91 predicate places. [2023-11-06 22:23:16,858 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 83 transitions, 787 flow [2023-11-06 22:23:16,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 105.94444444444444) internal successors, (1907), 18 states have internal predecessors, (1907), 0 states have call successors, (0), 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 22:23:16,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:16,859 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:16,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 (24)] Ended with exit code 0 [2023-11-06 22:23:17,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:23:17,074 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:23:17,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:17,074 INFO L85 PathProgramCache]: Analyzing trace with hash -666265540, now seen corresponding path program 8 times [2023-11-06 22:23:17,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:23:17,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355651582] [2023-11-06 22:23:17,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:23:17,075 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 22:23:17,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:23:17,076 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:23:17,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 (25)] Waiting until timeout for monitored process [2023-11-06 22:23:17,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:23:17,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:23:17,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:23:17,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:18,047 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:18,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:23:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:20,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:23:20,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355651582] [2023-11-06 22:23:20,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355651582] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:23:20,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:23:20,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-06 22:23:20,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219649332] [2023-11-06 22:23:20,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:23:20,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:23:20,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:23:20,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:23:20,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:23:22,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 291 [2023-11-06 22:23:22,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 83 transitions, 787 flow. Second operand has 20 states, 20 states have (on average 110.85) internal successors, (2217), 20 states have internal predecessors, (2217), 0 states have call successors, (0), 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 22:23:22,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:22,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 291 [2023-11-06 22:23:22,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:27,604 INFO L124 PetriNetUnfolderBase]: 2367/4435 cut-off events. [2023-11-06 22:23:27,604 INFO L125 PetriNetUnfolderBase]: For 21115/21115 co-relation queries the response was YES. [2023-11-06 22:23:27,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17199 conditions, 4435 events. 2367/4435 cut-off events. For 21115/21115 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 31788 event pairs, 333 based on Foata normal form. 82/4516 useless extension candidates. Maximal degree in co-relation 17142. Up to 1267 conditions per place. [2023-11-06 22:23:27,641 INFO L140 encePairwiseOnDemand]: 286/291 looper letters, 158 selfloop transitions, 99 changer transitions 15/272 dead transitions. [2023-11-06 22:23:27,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 272 transitions, 3213 flow [2023-11-06 22:23:27,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:23:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:23:27,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2102 transitions. [2023-11-06 22:23:27,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40129820542191674 [2023-11-06 22:23:27,646 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2102 transitions. [2023-11-06 22:23:27,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2102 transitions. [2023-11-06 22:23:27,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:27,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2102 transitions. [2023-11-06 22:23:27,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 116.77777777777777) internal successors, (2102), 18 states have internal predecessors, (2102), 0 states have call successors, (0), 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 22:23:27,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 291.0) internal successors, (5529), 19 states have internal predecessors, (5529), 0 states have call successors, (0), 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 22:23:27,660 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 291.0) internal successors, (5529), 19 states have internal predecessors, (5529), 0 states have call successors, (0), 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 22:23:27,660 INFO L175 Difference]: Start difference. First operand has 125 places, 83 transitions, 787 flow. Second operand 18 states and 2102 transitions. [2023-11-06 22:23:27,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 272 transitions, 3213 flow [2023-11-06 22:23:27,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 272 transitions, 2973 flow, removed 95 selfloop flow, removed 14 redundant places. [2023-11-06 22:23:27,745 INFO L231 Difference]: Finished difference. Result has 120 places, 177 transitions, 2244 flow [2023-11-06 22:23:27,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2244, PETRI_PLACES=120, PETRI_TRANSITIONS=177} [2023-11-06 22:23:27,746 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 86 predicate places. [2023-11-06 22:23:27,747 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 177 transitions, 2244 flow [2023-11-06 22:23:27,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 110.85) internal successors, (2217), 20 states have internal predecessors, (2217), 0 states have call successors, (0), 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 22:23:27,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:27,748 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:27,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 (25)] Ended with exit code 0 [2023-11-06 22:23:27,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:23:27,962 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:23:27,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:27,963 INFO L85 PathProgramCache]: Analyzing trace with hash -262478499, now seen corresponding path program 9 times [2023-11-06 22:23:27,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:23:27,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149153253] [2023-11-06 22:23:27,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:23:27,963 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 22:23:27,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:23:27,965 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:23:27,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 (26)] Waiting until timeout for monitored process [2023-11-06 22:23:28,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:23:28,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:23:28,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:23:28,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:28,553 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:23:28,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:23:28,710 INFO L322 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2023-11-06 22:23:28,710 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 29 [2023-11-06 22:23:28,929 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:23:28,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:23:28,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149153253] [2023-11-06 22:23:28,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149153253] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:23:28,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:23:28,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-11-06 22:23:28,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812482353] [2023-11-06 22:23:28,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:23:28,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:23:28,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:23:28,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:23:28,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:23:29,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 291 [2023-11-06 22:23:29,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 177 transitions, 2244 flow. Second operand has 12 states, 12 states have (on average 114.41666666666667) internal successors, (1373), 12 states have internal predecessors, (1373), 0 states have call successors, (0), 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 22:23:29,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:29,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 291 [2023-11-06 22:23:29,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:32,203 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 22:23:34,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:23:37,106 WARN L539 Checker$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 22:23:39,286 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 22:23:41,185 INFO L124 PetriNetUnfolderBase]: 2983/5571 cut-off events. [2023-11-06 22:23:41,186 INFO L125 PetriNetUnfolderBase]: For 24258/24258 co-relation queries the response was YES. [2023-11-06 22:23:41,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22074 conditions, 5571 events. 2983/5571 cut-off events. For 24258/24258 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 41395 event pairs, 328 based on Foata normal form. 14/5584 useless extension candidates. Maximal degree in co-relation 22027. Up to 1644 conditions per place. [2023-11-06 22:23:41,225 INFO L140 encePairwiseOnDemand]: 286/291 looper letters, 166 selfloop transitions, 160 changer transitions 19/345 dead transitions. [2023-11-06 22:23:41,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 345 transitions, 4461 flow [2023-11-06 22:23:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:23:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 22:23:41,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1573 transitions. [2023-11-06 22:23:41,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41580756013745707 [2023-11-06 22:23:41,230 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1573 transitions. [2023-11-06 22:23:41,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1573 transitions. [2023-11-06 22:23:41,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:41,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1573 transitions. [2023-11-06 22:23:41,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 121.0) internal successors, (1573), 13 states have internal predecessors, (1573), 0 states have call successors, (0), 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 22:23:41,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 291.0) internal successors, (4074), 14 states have internal predecessors, (4074), 0 states have call successors, (0), 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 22:23:41,240 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 291.0) internal successors, (4074), 14 states have internal predecessors, (4074), 0 states have call successors, (0), 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 22:23:41,240 INFO L175 Difference]: Start difference. First operand has 120 places, 177 transitions, 2244 flow. Second operand 13 states and 1573 transitions. [2023-11-06 22:23:41,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 345 transitions, 4461 flow [2023-11-06 22:23:41,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 345 transitions, 3894 flow, removed 279 selfloop flow, removed 5 redundant places. [2023-11-06 22:23:41,377 INFO L231 Difference]: Finished difference. Result has 135 places, 241 transitions, 3431 flow [2023-11-06 22:23:41,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3431, PETRI_PLACES=135, PETRI_TRANSITIONS=241} [2023-11-06 22:23:41,378 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 101 predicate places. [2023-11-06 22:23:41,379 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 241 transitions, 3431 flow [2023-11-06 22:23:41,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 114.41666666666667) internal successors, (1373), 12 states have internal predecessors, (1373), 0 states have call successors, (0), 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 22:23:41,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:41,379 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:41,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:23:41,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:23:41,580 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:23:41,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:41,580 INFO L85 PathProgramCache]: Analyzing trace with hash -653590973, now seen corresponding path program 10 times [2023-11-06 22:23:41,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:23:41,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626560051] [2023-11-06 22:23:41,581 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:23:41,581 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 22:23:41,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:23:41,582 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:23:41,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 (27)] Waiting until timeout for monitored process [2023-11-06 22:23:41,752 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:23:41,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:23:41,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:23:41,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:41,981 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:23:41,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:23:42,156 INFO L322 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2023-11-06 22:23:42,157 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 29 [2023-11-06 22:23:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:23:42,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:23:42,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626560051] [2023-11-06 22:23:42,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626560051] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:23:42,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:23:42,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-06 22:23:42,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714816144] [2023-11-06 22:23:42,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:23:42,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:23:42,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:23:42,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:23:42,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:23:43,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 291 [2023-11-06 22:23:43,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 241 transitions, 3431 flow. Second operand has 11 states, 11 states have (on average 114.72727272727273) internal successors, (1262), 11 states have internal predecessors, (1262), 0 states have call successors, (0), 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 22:23:43,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:43,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 291 [2023-11-06 22:23:43,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:45,354 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 22:23:48,044 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 22:23:51,098 INFO L124 PetriNetUnfolderBase]: 3341/6243 cut-off events. [2023-11-06 22:23:51,098 INFO L125 PetriNetUnfolderBase]: For 31756/31756 co-relation queries the response was YES. [2023-11-06 22:23:51,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24267 conditions, 6243 events. 3341/6243 cut-off events. For 31756/31756 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 47432 event pairs, 354 based on Foata normal form. 14/6256 useless extension candidates. Maximal degree in co-relation 24212. Up to 1427 conditions per place. [2023-11-06 22:23:51,139 INFO L140 encePairwiseOnDemand]: 286/291 looper letters, 211 selfloop transitions, 179 changer transitions 32/422 dead transitions. [2023-11-06 22:23:51,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 422 transitions, 5362 flow [2023-11-06 22:23:51,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:23:51,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-06 22:23:51,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2423 transitions. [2023-11-06 22:23:51,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41632302405498284 [2023-11-06 22:23:51,146 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2423 transitions. [2023-11-06 22:23:51,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2423 transitions. [2023-11-06 22:23:51,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:51,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2423 transitions. [2023-11-06 22:23:51,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 121.15) internal successors, (2423), 20 states have internal predecessors, (2423), 0 states have call successors, (0), 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 22:23:51,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 291.0) internal successors, (6111), 21 states have internal predecessors, (6111), 0 states have call successors, (0), 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 22:23:51,160 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 291.0) internal successors, (6111), 21 states have internal predecessors, (6111), 0 states have call successors, (0), 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 22:23:51,160 INFO L175 Difference]: Start difference. First operand has 135 places, 241 transitions, 3431 flow. Second operand 20 states and 2423 transitions. [2023-11-06 22:23:51,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 422 transitions, 5362 flow [2023-11-06 22:23:51,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 422 transitions, 5306 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-11-06 22:23:51,325 INFO L231 Difference]: Finished difference. Result has 160 places, 277 transitions, 4399 flow [2023-11-06 22:23:51,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=3379, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4399, PETRI_PLACES=160, PETRI_TRANSITIONS=277} [2023-11-06 22:23:51,327 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 126 predicate places. [2023-11-06 22:23:51,327 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 277 transitions, 4399 flow [2023-11-06 22:23:51,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 114.72727272727273) internal successors, (1262), 11 states have internal predecessors, (1262), 0 states have call successors, (0), 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 22:23:51,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:51,328 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:51,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:23:51,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:23:51,542 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:23:51,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:51,542 INFO L85 PathProgramCache]: Analyzing trace with hash 681730183, now seen corresponding path program 11 times [2023-11-06 22:23:51,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:23:51,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124942875] [2023-11-06 22:23:51,543 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:23:51,543 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 22:23:51,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:23:51,544 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:23:51,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 (28)] Waiting until timeout for monitored process [2023-11-06 22:23:51,776 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-06 22:23:51,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:23:51,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:23:51,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:23:51,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:23:52,133 INFO L322 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2023-11-06 22:23:52,133 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 90 treesize of output 27 [2023-11-06 22:23:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:23:52,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:23:52,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124942875] [2023-11-06 22:23:52,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124942875] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:23:52,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:23:52,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 22:23:52,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827100356] [2023-11-06 22:23:52,305 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:23:52,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:23:52,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:23:52,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:23:52,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:23:52,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 291 [2023-11-06 22:23:52,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 277 transitions, 4399 flow. Second operand has 10 states, 10 states have (on average 115.1) internal successors, (1151), 10 states have internal predecessors, (1151), 0 states have call successors, (0), 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 22:23:52,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:52,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 291 [2023-11-06 22:23:52,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:55,447 INFO L124 PetriNetUnfolderBase]: 3341/6230 cut-off events. [2023-11-06 22:23:55,447 INFO L125 PetriNetUnfolderBase]: For 40308/40308 co-relation queries the response was YES. [2023-11-06 22:23:55,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25738 conditions, 6230 events. 3341/6230 cut-off events. For 40308/40308 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 47435 event pairs, 346 based on Foata normal form. 13/6242 useless extension candidates. Maximal degree in co-relation 25674. Up to 2227 conditions per place. [2023-11-06 22:23:55,487 INFO L140 encePairwiseOnDemand]: 286/291 looper letters, 160 selfloop transitions, 131 changer transitions 96/387 dead transitions. [2023-11-06 22:23:55,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 387 transitions, 5581 flow [2023-11-06 22:23:55,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:23:55,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:23:55,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1814 transitions. [2023-11-06 22:23:55,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41557846506300117 [2023-11-06 22:23:55,492 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1814 transitions. [2023-11-06 22:23:55,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1814 transitions. [2023-11-06 22:23:55,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:55,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1814 transitions. [2023-11-06 22:23:55,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 120.93333333333334) internal successors, (1814), 15 states have internal predecessors, (1814), 0 states have call successors, (0), 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 22:23:55,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 291.0) internal successors, (4656), 16 states have internal predecessors, (4656), 0 states have call successors, (0), 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 22:23:55,502 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 291.0) internal successors, (4656), 16 states have internal predecessors, (4656), 0 states have call successors, (0), 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 22:23:55,503 INFO L175 Difference]: Start difference. First operand has 160 places, 277 transitions, 4399 flow. Second operand 15 states and 1814 transitions. [2023-11-06 22:23:55,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 387 transitions, 5581 flow [2023-11-06 22:23:55,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 387 transitions, 5400 flow, removed 73 selfloop flow, removed 2 redundant places. [2023-11-06 22:23:55,798 INFO L231 Difference]: Finished difference. Result has 179 places, 249 transitions, 4093 flow [2023-11-06 22:23:55,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=4220, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4093, PETRI_PLACES=179, PETRI_TRANSITIONS=249} [2023-11-06 22:23:55,799 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 145 predicate places. [2023-11-06 22:23:55,799 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 249 transitions, 4093 flow [2023-11-06 22:23:55,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 115.1) internal successors, (1151), 10 states have internal predecessors, (1151), 0 states have call successors, (0), 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 22:23:55,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:55,800 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:55,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 (28)] Forceful destruction successful, exit code 0 [2023-11-06 22:23:56,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:23:56,001 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:23:56,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:56,001 INFO L85 PathProgramCache]: Analyzing trace with hash -973505627, now seen corresponding path program 12 times [2023-11-06 22:23:56,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:23:56,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58569693] [2023-11-06 22:23:56,002 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:23:56,002 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 22:23:56,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:23:56,003 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:23:56,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 (29)] Waiting until timeout for monitored process [2023-11-06 22:23:56,240 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-06 22:23:56,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:23:56,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:23:56,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:56,258 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 26 treesize of output 24 [2023-11-06 22:23:56,519 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2023-11-06 22:23:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:23:56,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:23:57,032 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_648 (Array (_ BitVec 32) (_ BitVec 8)))) (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_648) c_~queue~0.base)) (.cse1 (bvmul (_ bv4 32) c_~front~0))) (concat (concat (concat (select .cse0 (bvadd c_~queue~0.offset (_ bv11 32) .cse1)) (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv10 32)))) (select .cse0 (bvadd c_~queue~0.offset .cse1 (_ bv9 32)))) (select .cse0 (bvadd c_~queue~0.offset (_ bv8 32) .cse1)))) (_ bv5 32))) is different from false [2023-11-06 22:23:57,269 INFO L322 Elim1Store]: treesize reduction 168, result has 25.3 percent of original size [2023-11-06 22:23:57,270 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 137 treesize of output 122 [2023-11-06 22:23:57,278 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:23:57,278 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 9 [2023-11-06 22:23:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 3 not checked. [2023-11-06 22:23:57,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:23:57,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58569693] [2023-11-06 22:23:57,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58569693] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:23:57,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:23:57,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-06 22:23:57,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228364892] [2023-11-06 22:23:57,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:23:57,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:23:57,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:23:57,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:23:57,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=179, Unknown=1, NotChecked=26, Total=240 [2023-11-06 22:23:58,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 291 [2023-11-06 22:23:58,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 249 transitions, 4093 flow. Second operand has 16 states, 16 states have (on average 93.75) internal successors, (1500), 16 states have internal predecessors, (1500), 0 states have call successors, (0), 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 22:23:58,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:58,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 291 [2023-11-06 22:23:58,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:00,682 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 22:24:02,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:05,619 WARN L539 Checker$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 22:24:07,880 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 22:24:10,110 INFO L124 PetriNetUnfolderBase]: 3051/5680 cut-off events. [2023-11-06 22:24:10,110 INFO L125 PetriNetUnfolderBase]: For 43368/43368 co-relation queries the response was YES. [2023-11-06 22:24:10,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24113 conditions, 5680 events. 3051/5680 cut-off events. For 43368/43368 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 42038 event pairs, 320 based on Foata normal form. 8/5687 useless extension candidates. Maximal degree in co-relation 24042. Up to 1179 conditions per place. [2023-11-06 22:24:10,155 INFO L140 encePairwiseOnDemand]: 286/291 looper letters, 107 selfloop transitions, 205 changer transitions 40/352 dead transitions. [2023-11-06 22:24:10,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 352 transitions, 5248 flow [2023-11-06 22:24:10,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:24:10,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:24:10,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1397 transitions. [2023-11-06 22:24:10,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.342906234658812 [2023-11-06 22:24:10,160 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1397 transitions. [2023-11-06 22:24:10,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1397 transitions. [2023-11-06 22:24:10,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:10,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1397 transitions. [2023-11-06 22:24:10,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 99.78571428571429) internal successors, (1397), 14 states have internal predecessors, (1397), 0 states have call successors, (0), 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 22:24:10,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 291.0) internal successors, (4365), 15 states have internal predecessors, (4365), 0 states have call successors, (0), 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 22:24:10,170 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 291.0) internal successors, (4365), 15 states have internal predecessors, (4365), 0 states have call successors, (0), 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 22:24:10,170 INFO L175 Difference]: Start difference. First operand has 179 places, 249 transitions, 4093 flow. Second operand 14 states and 1397 transitions. [2023-11-06 22:24:10,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 352 transitions, 5248 flow [2023-11-06 22:24:10,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 352 transitions, 5005 flow, removed 16 selfloop flow, removed 7 redundant places. [2023-11-06 22:24:10,530 INFO L231 Difference]: Finished difference. Result has 183 places, 255 transitions, 4415 flow [2023-11-06 22:24:10,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=3850, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4415, PETRI_PLACES=183, PETRI_TRANSITIONS=255} [2023-11-06 22:24:10,531 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 149 predicate places. [2023-11-06 22:24:10,531 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 255 transitions, 4415 flow [2023-11-06 22:24:10,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 93.75) internal successors, (1500), 16 states have internal predecessors, (1500), 0 states have call successors, (0), 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 22:24:10,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:10,532 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:10,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 (29)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:10,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:24:10,738 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:24:10,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:10,738 INFO L85 PathProgramCache]: Analyzing trace with hash 426448529, now seen corresponding path program 13 times [2023-11-06 22:24:10,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:10,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868463805] [2023-11-06 22:24:10,739 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:24:10,739 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 22:24:10,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:10,740 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:24:10,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 (30)] Waiting until timeout for monitored process [2023-11-06 22:24:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:10,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:24:10,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:12,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:14,579 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:24:14,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:14,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868463805] [2023-11-06 22:24:14,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868463805] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:24:14,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:24:14,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-06 22:24:14,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662953103] [2023-11-06 22:24:14,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:24:14,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:24:14,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:14,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:24:14,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:24:16,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 291 [2023-11-06 22:24:16,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 255 transitions, 4415 flow. Second operand has 24 states, 24 states have (on average 110.70833333333333) internal successors, (2657), 24 states have internal predecessors, (2657), 0 states have call successors, (0), 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 22:24:16,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:16,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 291 [2023-11-06 22:24:16,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:25,480 INFO L124 PetriNetUnfolderBase]: 2724/5138 cut-off events. [2023-11-06 22:24:25,480 INFO L125 PetriNetUnfolderBase]: For 38390/38390 co-relation queries the response was YES. [2023-11-06 22:24:25,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21680 conditions, 5138 events. 2724/5138 cut-off events. For 38390/38390 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 37445 event pairs, 385 based on Foata normal form. 103/5241 useless extension candidates. Maximal degree in co-relation 21609. Up to 1182 conditions per place. [2023-11-06 22:24:25,512 INFO L140 encePairwiseOnDemand]: 286/291 looper letters, 142 selfloop transitions, 139 changer transitions 84/365 dead transitions. [2023-11-06 22:24:25,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 365 transitions, 5779 flow [2023-11-06 22:24:25,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:24:25,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-06 22:24:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2335 transitions. [2023-11-06 22:24:25,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012027491408935 [2023-11-06 22:24:25,527 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2335 transitions. [2023-11-06 22:24:25,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2335 transitions. [2023-11-06 22:24:25,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:25,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2335 transitions. [2023-11-06 22:24:25,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 116.75) internal successors, (2335), 20 states have internal predecessors, (2335), 0 states have call successors, (0), 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 22:24:25,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 291.0) internal successors, (6111), 21 states have internal predecessors, (6111), 0 states have call successors, (0), 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 22:24:25,549 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 291.0) internal successors, (6111), 21 states have internal predecessors, (6111), 0 states have call successors, (0), 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 22:24:25,549 INFO L175 Difference]: Start difference. First operand has 183 places, 255 transitions, 4415 flow. Second operand 20 states and 2335 transitions. [2023-11-06 22:24:25,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 365 transitions, 5779 flow [2023-11-06 22:24:25,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 365 transitions, 5226 flow, removed 67 selfloop flow, removed 15 redundant places. [2023-11-06 22:24:25,716 INFO L231 Difference]: Finished difference. Result has 188 places, 227 transitions, 3610 flow [2023-11-06 22:24:25,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=2644, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3610, PETRI_PLACES=188, PETRI_TRANSITIONS=227} [2023-11-06 22:24:25,717 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 154 predicate places. [2023-11-06 22:24:25,717 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 227 transitions, 3610 flow [2023-11-06 22:24:25,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 110.70833333333333) internal successors, (2657), 24 states have internal predecessors, (2657), 0 states have call successors, (0), 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 22:24:25,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:25,718 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:25,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 (30)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:25,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:24:25,920 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:24:25,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:25,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1019676978, now seen corresponding path program 14 times [2023-11-06 22:24:25,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:25,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627009146] [2023-11-06 22:24:25,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:24:25,921 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 22:24:25,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:25,922 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:24:25,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 (31)] Waiting until timeout for monitored process [2023-11-06 22:24:26,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:24:26,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:26,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:24:26,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:26,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 22:24:26,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:26,622 INFO L322 Elim1Store]: treesize reduction 216, result has 4.0 percent of original size [2023-11-06 22:24:26,622 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 29 [2023-11-06 22:24:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 22:24:26,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:26,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627009146] [2023-11-06 22:24:26,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627009146] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:24:26,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:24:26,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-11-06 22:24:26,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280407331] [2023-11-06 22:24:26,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:24:26,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:24:26,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:26,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:24:26,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:24:27,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 291 [2023-11-06 22:24:27,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 227 transitions, 3610 flow. Second operand has 14 states, 14 states have (on average 114.28571428571429) internal successors, (1600), 14 states have internal predecessors, (1600), 0 states have call successors, (0), 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 22:24:27,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:27,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 291 [2023-11-06 22:24:27,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:30,085 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 22:24:32,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:35,216 WARN L539 Checker$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 22:24:37,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:24:40,815 WARN L539 Checker$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 22:24:44,251 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 22:24:49,537 INFO L124 PetriNetUnfolderBase]: 3788/6967 cut-off events. [2023-11-06 22:24:49,537 INFO L125 PetriNetUnfolderBase]: For 56160/56160 co-relation queries the response was YES. [2023-11-06 22:24:49,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29092 conditions, 6967 events. 3788/6967 cut-off events. For 56160/56160 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 51838 event pairs, 211 based on Foata normal form. 27/6993 useless extension candidates. Maximal degree in co-relation 29024. Up to 2007 conditions per place. [2023-11-06 22:24:49,591 INFO L140 encePairwiseOnDemand]: 286/291 looper letters, 272 selfloop transitions, 279 changer transitions 55/606 dead transitions. [2023-11-06 22:24:49,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 606 transitions, 8093 flow [2023-11-06 22:24:49,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-06 22:24:49,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-11-06 22:24:49,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4846 transitions. [2023-11-06 22:24:49,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41632302405498284 [2023-11-06 22:24:49,604 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4846 transitions. [2023-11-06 22:24:49,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4846 transitions. [2023-11-06 22:24:49,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:49,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4846 transitions. [2023-11-06 22:24:49,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 121.15) internal successors, (4846), 40 states have internal predecessors, (4846), 0 states have call successors, (0), 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 22:24:49,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 291.0) internal successors, (11931), 41 states have internal predecessors, (11931), 0 states have call successors, (0), 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 22:24:49,626 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 291.0) internal successors, (11931), 41 states have internal predecessors, (11931), 0 states have call successors, (0), 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 22:24:49,626 INFO L175 Difference]: Start difference. First operand has 188 places, 227 transitions, 3610 flow. Second operand 40 states and 4846 transitions. [2023-11-06 22:24:49,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 606 transitions, 8093 flow [2023-11-06 22:24:49,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 606 transitions, 7653 flow, removed 122 selfloop flow, removed 8 redundant places. [2023-11-06 22:24:49,812 INFO L231 Difference]: Finished difference. Result has 227 places, 339 transitions, 5647 flow [2023-11-06 22:24:49,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=3297, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=5647, PETRI_PLACES=227, PETRI_TRANSITIONS=339} [2023-11-06 22:24:49,812 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 193 predicate places. [2023-11-06 22:24:49,813 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 339 transitions, 5647 flow [2023-11-06 22:24:49,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 114.28571428571429) internal successors, (1600), 14 states have internal predecessors, (1600), 0 states have call successors, (0), 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 22:24:49,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:49,813 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:49,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 (31)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:50,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:24:50,027 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:24:50,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:50,027 INFO L85 PathProgramCache]: Analyzing trace with hash 837580946, now seen corresponding path program 15 times [2023-11-06 22:24:50,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:50,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899609539] [2023-11-06 22:24:50,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:24:50,028 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 22:24:50,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:50,029 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 22:24:50,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49241fab-4d8e-43bd-97fa-abacb7ccb1f6/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 (32)] Waiting until timeout for monitored process [2023-11-06 22:24:50,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:24:50,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:50,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-06 22:24:50,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:50,386 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-06 22:24:50,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:50,400 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 22:24:50,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:50,411 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 22:24:50,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:50,419 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 22:24:50,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:50,427 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 22:24:50,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:50,436 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 22:24:52,041 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 22 treesize of output 16 [2023-11-06 22:24:52,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:24:52,924 INFO L322 Elim1Store]: treesize reduction 148, result has 8.1 percent of original size [2023-11-06 22:24:52,925 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 108 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 161 treesize of output 49 [2023-11-06 22:24:53,101 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:24:53,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:57,275 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,285 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,286 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,287 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,288 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,290 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,297 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,298 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,300 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,302 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,303 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,305 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,311 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,312 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,314 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,315 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,316 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,318 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,322 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,329 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,330 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,332 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,339 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,340 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,346 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,347 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,349 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,350 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,351 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,353 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,354 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,356 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,362 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,369 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,370 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,377 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:24:57,381 INFO L217 Elim1Store]: Index analysis took 113 ms [2023-11-06 22:24:57,504 INFO L322 Elim1Store]: treesize reduction 135, result has 16.1 percent of original size [2023-11-06 22:24:57,504 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 108 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 12 case distinctions, treesize of input 183 treesize of output 65