./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-trans.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_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:36:16,706 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:36:16,784 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:36:16,790 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:36:16,791 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:36:16,819 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:36:16,820 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:36:16,820 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:36:16,821 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:36:16,822 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:36:16,823 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:36:16,823 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:36:16,824 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:36:16,825 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:36:16,825 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:36:16,826 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:36:16,826 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:36:16,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:36:16,828 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:36:16,828 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:36:16,829 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:36:16,830 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:36:16,830 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:36:16,831 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:36:16,831 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:36:16,832 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:36:16,833 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:36:16,833 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:36:16,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:36:16,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:36:16,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:36:16,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:36:16,836 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:36:16,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:36:16,837 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:36:16,837 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:36:16,838 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:36:16,838 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:36:16,839 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_af6ef383-7bef-4af3-9121-9ee07dff90e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 [2023-11-06 22:36:17,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:36:17,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:36:17,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:36:17,202 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:36:17,203 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:36:17,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2023-11-06 22:36:20,387 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:36:20,638 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:36:20,639 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2023-11-06 22:36:20,648 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/data/e543c4fe0/923d0bb2da194a489f92db19a142fde3/FLAG1faf52a50 [2023-11-06 22:36:20,662 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/data/e543c4fe0/923d0bb2da194a489f92db19a142fde3 [2023-11-06 22:36:20,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:36:20,666 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:36:20,667 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:36:20,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:36:20,673 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:36:20,674 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:20" (1/1) ... [2023-11-06 22:36:20,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ecd5723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:20, skipping insertion in model container [2023-11-06 22:36:20,675 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:20" (1/1) ... [2023-11-06 22:36:20,705 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:36:20,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:36:20,915 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 22:36:20,915 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@291d2ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:20, skipping insertion in model container [2023-11-06 22:36:20,916 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:36:20,916 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 22:36:20,918 INFO L158 Benchmark]: Toolchain (without parser) took 251.21ms. Allocated memory is still 127.9MB. Free memory was 97.4MB in the beginning and 87.1MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:36:20,919 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:36:20,920 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.78ms. Allocated memory is still 127.9MB. Free memory was 97.1MB in the beginning and 87.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:36:20,922 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.78ms. Allocated memory is still 127.9MB. Free memory was 97.1MB in the beginning and 87.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 117]: 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_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:36:23,363 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:36:23,436 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:36:23,442 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:36:23,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:36:23,474 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:36:23,477 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:36:23,478 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:36:23,479 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:36:23,482 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:36:23,482 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:36:23,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:36:23,483 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:36:23,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:36:23,488 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:36:23,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:36:23,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:36:23,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:36:23,490 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:36:23,490 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:36:23,491 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:36:23,491 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:36:23,492 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:36:23,492 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:36:23,492 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:36:23,493 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:36:23,493 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:36:23,494 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:36:23,494 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:36:23,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:36:23,496 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:36:23,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:36:23,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:36:23,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:36:23,497 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:36:23,498 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:36:23,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:36:23,498 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:36:23,498 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:36:23,499 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:36:23,499 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:36:23,500 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_af6ef383-7bef-4af3-9121-9ee07dff90e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f188168fffbbf8c03071990a7bb806f47bcfd599d52fd9001ab6073a6b782e8 [2023-11-06 22:36:23,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:36:23,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:36:23,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:36:23,896 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:36:23,897 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:36:23,899 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2023-11-06 22:36:27,139 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:36:27,483 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:36:27,484 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2023-11-06 22:36:27,500 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/data/1967f546a/5057ee01f1d1442eaf413185ec8e03f4/FLAGa1f6a2eb7 [2023-11-06 22:36:27,520 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/data/1967f546a/5057ee01f1d1442eaf413185ec8e03f4 [2023-11-06 22:36:27,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:36:27,531 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:36:27,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:36:27,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:36:27,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:36:27,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:27" (1/1) ... [2023-11-06 22:36:27,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d3c683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:27, skipping insertion in model container [2023-11-06 22:36:27,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:27" (1/1) ... [2023-11-06 22:36:27,586 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:36:27,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:36:27,923 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 22:36:27,941 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:36:27,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:36:28,008 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:36:28,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:36:28,084 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:36:28,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:28 WrapperNode [2023-11-06 22:36:28,085 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:36:28,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:36:28,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:36:28,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:36:28,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:28" (1/1) ... [2023-11-06 22:36:28,129 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:28" (1/1) ... [2023-11-06 22:36:28,190 INFO L138 Inliner]: procedures = 28, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 278 [2023-11-06 22:36:28,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:36:28,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:36:28,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:36:28,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:36:28,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:28" (1/1) ... [2023-11-06 22:36:28,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:28" (1/1) ... [2023-11-06 22:36:28,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:28" (1/1) ... [2023-11-06 22:36:28,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:28" (1/1) ... [2023-11-06 22:36:28,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:28" (1/1) ... [2023-11-06 22:36:28,274 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:28" (1/1) ... [2023-11-06 22:36:28,288 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:28" (1/1) ... [2023-11-06 22:36:28,291 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:28" (1/1) ... [2023-11-06 22:36:28,296 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:36:28,297 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:36:28,297 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:36:28,323 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:36:28,324 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:28" (1/1) ... [2023-11-06 22:36:28,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:36:28,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:28,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:36:28,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:36:28,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:36:28,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:36:28,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:36:28,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:36:28,475 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:36:28,475 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:36:28,476 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:36:28,476 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:36:28,476 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:36:28,476 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:36:28,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:36:28,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:36:28,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:36:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:36:28,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:36:28,481 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 22:36:28,632 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:36:28,634 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:36:29,587 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:36:29,600 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:36:29,601 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:36:29,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:29 BoogieIcfgContainer [2023-11-06 22:36:29,604 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:36:29,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:36:29,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:36:29,611 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:36:29,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:36:27" (1/3) ... [2023-11-06 22:36:29,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e2bb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:29, skipping insertion in model container [2023-11-06 22:36:29,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:28" (2/3) ... [2023-11-06 22:36:29,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e2bb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:29, skipping insertion in model container [2023-11-06 22:36:29,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:29" (3/3) ... [2023-11-06 22:36:29,615 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2023-11-06 22:36:29,636 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:36:29,636 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-06 22:36:29,637 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:36:29,863 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:36:29,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 395 transitions, 811 flow [2023-11-06 22:36:30,230 INFO L124 PetriNetUnfolderBase]: 28/392 cut-off events. [2023-11-06 22:36:30,231 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:36:30,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 392 events. 28/392 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 851 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 295. Up to 3 conditions per place. [2023-11-06 22:36:30,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 377 places, 395 transitions, 811 flow [2023-11-06 22:36:30,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 369 places, 387 transitions, 792 flow [2023-11-06 22:36:30,281 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:36:30,297 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 369 places, 387 transitions, 792 flow [2023-11-06 22:36:30,300 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 369 places, 387 transitions, 792 flow [2023-11-06 22:36:30,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 387 transitions, 792 flow [2023-11-06 22:36:30,391 INFO L124 PetriNetUnfolderBase]: 28/387 cut-off events. [2023-11-06 22:36:30,391 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:36:30,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 387 events. 28/387 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 851 event pairs, 0 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 295. Up to 3 conditions per place. [2023-11-06 22:36:30,415 INFO L119 LiptonReduction]: Number of co-enabled transitions 25650 [2023-11-06 22:37:29,637 INFO L134 LiptonReduction]: Checked pairs total: 40288 [2023-11-06 22:37:29,638 INFO L136 LiptonReduction]: Total number of compositions: 475 [2023-11-06 22:37:29,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:37:29,662 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;@30532e35, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:37:29,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2023-11-06 22:37:29,665 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:37:29,665 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:37:29,665 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:37:29,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:37:29,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:37:29,667 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:37:29,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:29,673 INFO L85 PathProgramCache]: Analyzing trace with hash 50647, now seen corresponding path program 1 times [2023-11-06 22:37:29,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:37:29,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107815977] [2023-11-06 22:37:29,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:29,688 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 22:37:29,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:37:29,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:37:29,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:37:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:29,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:37:29,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:29,973 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 22:37:29,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:29,995 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 22:37:30,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,012 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 22:37:30,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,026 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 22:37:30,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,048 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 22:37:30,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,074 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 22:37:30,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,099 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 22:37:30,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,132 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 22:37:30,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,148 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 22:37:30,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,160 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 22:37:30,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,176 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 22:37:30,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,191 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 22:37:30,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,215 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:37:30,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,227 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 22:37:30,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,261 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 22:37:30,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,289 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 22:37:30,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,303 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:37:30,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,320 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 22:37:30,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,361 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 22:37:30,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,376 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 22:37:30,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,396 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 22:37:30,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,423 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 22:37:30,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,477 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 22:37:30,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:30,530 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:37:30,558 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 22:37:30,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:37:30,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:37:30,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107815977] [2023-11-06 22:37:30,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107815977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:37:30,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:37:30,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:37:30,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090359147] [2023-11-06 22:37:30,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:37:30,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:37:30,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:37:30,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:37:30,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:37:31,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 870 [2023-11-06 22:37:31,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 348.6666666666667) internal successors, (1046), 3 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:31,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:37:31,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 870 [2023-11-06 22:37:31,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:37:37,128 INFO L124 PetriNetUnfolderBase]: 18465/25233 cut-off events. [2023-11-06 22:37:37,128 INFO L125 PetriNetUnfolderBase]: For 483/483 co-relation queries the response was YES. [2023-11-06 22:37:37,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50999 conditions, 25233 events. 18465/25233 cut-off events. For 483/483 co-relation queries the response was YES. Maximal size of possible extension queue 1432. Compared 140267 event pairs, 15757 based on Foata normal form. 0/8340 useless extension candidates. Maximal degree in co-relation 48308. Up to 25226 conditions per place. [2023-11-06 22:37:37,368 INFO L140 encePairwiseOnDemand]: 853/870 looper letters, 76 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2023-11-06 22:37:37,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 85 transitions, 358 flow [2023-11-06 22:37:37,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:37:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:37:37,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1137 transitions. [2023-11-06 22:37:37,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.435632183908046 [2023-11-06 22:37:37,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1137 transitions. [2023-11-06 22:37:37,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1137 transitions. [2023-11-06 22:37:37,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:37:37,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1137 transitions. [2023-11-06 22:37:37,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:37,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 870.0) internal successors, (3480), 4 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:37,438 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 870.0) internal successors, (3480), 4 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:37,441 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 176 flow. Second operand 3 states and 1137 transitions. [2023-11-06 22:37:37,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 85 transitions, 358 flow [2023-11-06 22:37:37,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 85 transitions, 346 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:37:37,467 INFO L231 Difference]: Finished difference. Result has 74 places, 82 transitions, 228 flow [2023-11-06 22:37:37,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=870, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=74, PETRI_TRANSITIONS=82} [2023-11-06 22:37:37,481 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -7 predicate places. [2023-11-06 22:37:37,481 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 82 transitions, 228 flow [2023-11-06 22:37:37,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 348.6666666666667) internal successors, (1046), 3 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:37,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:37:37,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:37:37,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:37:37,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:37:37,700 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:37:37,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:37,713 INFO L85 PathProgramCache]: Analyzing trace with hash 50646, now seen corresponding path program 1 times [2023-11-06 22:37:37,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:37:37,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986074881] [2023-11-06 22:37:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:37,714 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 22:37:37,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:37:37,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:37:37,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:37:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:37,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:37:37,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:37,827 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 22:37:37,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:37,840 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 22:37:37,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:37,851 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 22:37:37,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:37,859 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 22:37:37,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:37,881 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 22:37:37,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:37,892 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 22:37:37,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:37,905 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 22:37:37,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:37,919 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 22:37:37,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:37,940 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 22:37:37,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:37,951 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 22:37:37,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:37,961 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 22:37:37,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:37,972 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 22:37:37,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:37,983 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 22:37:37,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:37,992 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 11 treesize of output 1 [2023-11-06 22:37:38,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:38,010 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:37:38,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:38,019 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:37:38,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:38,026 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 22:37:38,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:38,034 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 22:37:38,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:38,057 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 22:37:38,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:38,084 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:37:38,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:38,095 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 22:37:38,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:38,110 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 22:37:38,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:38,128 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 22:37:38,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:38,137 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 22:37:38,142 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 22:37:38,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:37:38,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:37:38,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986074881] [2023-11-06 22:37:38,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986074881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:37:38,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:37:38,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:37:38,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353934894] [2023-11-06 22:37:38,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:37:38,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:37:38,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:37:38,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:37:38,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:37:38,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 870 [2023-11-06 22:37:38,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 82 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 351.6666666666667) internal successors, (1055), 3 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:38,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:37:38,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 870 [2023-11-06 22:37:38,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:37:43,192 INFO L124 PetriNetUnfolderBase]: 18465/25227 cut-off events. [2023-11-06 22:37:43,192 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-11-06 22:37:43,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50698 conditions, 25227 events. 18465/25227 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 1597. Compared 140837 event pairs, 15757 based on Foata normal form. 6/8350 useless extension candidates. Maximal degree in co-relation 50625. Up to 25214 conditions per place. [2023-11-06 22:37:43,381 INFO L140 encePairwiseOnDemand]: 863/870 looper letters, 72 selfloop transitions, 7 changer transitions 0/79 dead transitions. [2023-11-06 22:37:43,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 79 transitions, 380 flow [2023-11-06 22:37:43,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:37:43,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:37:43,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1127 transitions. [2023-11-06 22:37:43,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43180076628352493 [2023-11-06 22:37:43,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1127 transitions. [2023-11-06 22:37:43,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1127 transitions. [2023-11-06 22:37:43,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:37:43,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1127 transitions. [2023-11-06 22:37:43,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 375.6666666666667) internal successors, (1127), 3 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:43,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 870.0) internal successors, (3480), 4 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:43,413 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 870.0) internal successors, (3480), 4 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:43,414 INFO L175 Difference]: Start difference. First operand has 74 places, 82 transitions, 228 flow. Second operand 3 states and 1127 transitions. [2023-11-06 22:37:43,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 79 transitions, 380 flow [2023-11-06 22:37:43,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 79 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:37:43,421 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 218 flow [2023-11-06 22:37:43,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=870, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2023-11-06 22:37:43,425 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -10 predicate places. [2023-11-06 22:37:43,426 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 218 flow [2023-11-06 22:37:43,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 351.6666666666667) internal successors, (1055), 3 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:43,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:37:43,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:37:43,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:37:43,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:37:43,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:37:43,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:43,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1573615, now seen corresponding path program 1 times [2023-11-06 22:37:43,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:37:43,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891485996] [2023-11-06 22:37:43,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:43,647 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 22:37:43,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:37:43,648 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:37:43,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:37:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:43,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:37:43,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:43,774 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 22:37:43,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:43,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:37:43,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:43,816 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 22:37:43,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:43,828 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:37:43,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:43,845 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 22:37:43,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:43,855 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 22:37:43,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:43,895 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 22:37:43,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:43,911 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 22:37:43,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:43,931 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 22:37:43,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:43,955 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 22:37:43,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:43,990 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 22:37:44,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:44,031 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:37:44,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:44,050 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 22:37:44,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:44,060 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 22:37:44,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:44,076 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 22:37:44,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:44,086 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 22:37:44,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:44,115 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 22:37:44,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:44,129 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 22:37:44,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:44,150 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 22:37:44,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:44,176 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 22:37:44,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:44,192 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 22:37:44,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:44,202 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 22:37:44,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:44,218 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 22:37:44,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:44,228 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 22:37:44,308 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 22:37:44,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:37:44,608 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 22:37:44,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:37:44,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891485996] [2023-11-06 22:37:44,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891485996] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:37:44,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:37:44,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 22:37:44,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678337659] [2023-11-06 22:37:44,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:37:44,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:37:44,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:37:44,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:37:44,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:37:48,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 870 [2023-11-06 22:37:48,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:48,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:37:48,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 870 [2023-11-06 22:37:48,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:37:51,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:37:55,935 INFO L124 PetriNetUnfolderBase]: 18480/25251 cut-off events. [2023-11-06 22:37:55,936 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-11-06 22:37:55,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50777 conditions, 25251 events. 18480/25251 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 1597. Compared 140881 event pairs, 15757 based on Foata normal form. 0/8354 useless extension candidates. Maximal degree in co-relation 50625. Up to 25232 conditions per place. [2023-11-06 22:37:56,136 INFO L140 encePairwiseOnDemand]: 858/870 looper letters, 70 selfloop transitions, 33 changer transitions 0/103 dead transitions. [2023-11-06 22:37:56,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 103 transitions, 538 flow [2023-11-06 22:37:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:37:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:37:56,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2110 transitions. [2023-11-06 22:37:56,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4042145593869732 [2023-11-06 22:37:56,152 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2110 transitions. [2023-11-06 22:37:56,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2110 transitions. [2023-11-06 22:37:56,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:37:56,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2110 transitions. [2023-11-06 22:37:56,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 351.6666666666667) internal successors, (2110), 6 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:56,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 870.0) internal successors, (6090), 7 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:56,189 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 870.0) internal successors, (6090), 7 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:56,189 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 218 flow. Second operand 6 states and 2110 transitions. [2023-11-06 22:37:56,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 103 transitions, 538 flow [2023-11-06 22:37:56,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 103 transitions, 506 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:37:56,197 INFO L231 Difference]: Finished difference. Result has 77 places, 103 transitions, 429 flow [2023-11-06 22:37:56,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=870, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=429, PETRI_PLACES=77, PETRI_TRANSITIONS=103} [2023-11-06 22:37:56,200 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -4 predicate places. [2023-11-06 22:37:56,200 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 103 transitions, 429 flow [2023-11-06 22:37:56,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:56,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:37:56,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:37:56,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:37:56,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:37:56,416 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:37:56,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:56,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1515519176, now seen corresponding path program 1 times [2023-11-06 22:37:56,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:37:56,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222049989] [2023-11-06 22:37:56,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:56,419 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 22:37:56,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:37:56,421 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:37:56,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:37:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:56,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:37:56,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:56,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:56,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:56,677 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-11-06 22:37:56,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:56,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:56,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:56,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:56,755 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:37:56,756 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-06 22:37:56,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:56,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:56,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:56,846 INFO L322 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-06 22:37:56,846 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 1 [2023-11-06 22:37:56,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:56,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:56,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:56,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:56,917 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:37:56,918 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-06 22:37:56,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:56,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:56,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:56,956 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 1 [2023-11-06 22:37:56,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:56,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:57,007 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:37:57,008 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-06 22:37:57,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:37:57,060 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-06 22:37:57,137 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:37:57,138 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 22:37:57,178 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 22:37:57,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:37:57,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:37:57,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222049989] [2023-11-06 22:37:57,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222049989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:37:57,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:37:57,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:37:57,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725967132] [2023-11-06 22:37:57,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:37:57,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:37:57,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:37:57,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:37:57,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:37:57,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 360 out of 870 [2023-11-06 22:37:57,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 103 transitions, 429 flow. Second operand has 4 states, 4 states have (on average 361.25) internal successors, (1445), 4 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:37:57,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:37:57,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 360 of 870 [2023-11-06 22:37:57,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:01,128 INFO L124 PetriNetUnfolderBase]: 14164/19562 cut-off events. [2023-11-06 22:38:01,128 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2023-11-06 22:38:01,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39445 conditions, 19562 events. 14164/19562 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 1079. Compared 107010 event pairs, 12033 based on Foata normal form. 0/6989 useless extension candidates. Maximal degree in co-relation 39342. Up to 19562 conditions per place. [2023-11-06 22:38:01,256 INFO L140 encePairwiseOnDemand]: 867/870 looper letters, 96 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-11-06 22:38:01,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 588 flow [2023-11-06 22:38:01,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:38:01,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:38:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1151 transitions. [2023-11-06 22:38:01,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409961685823755 [2023-11-06 22:38:01,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1151 transitions. [2023-11-06 22:38:01,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1151 transitions. [2023-11-06 22:38:01,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:01,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1151 transitions. [2023-11-06 22:38:01,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 383.6666666666667) internal successors, (1151), 3 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 22:38:01,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 870.0) internal successors, (3480), 4 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:01,278 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 870.0) internal successors, (3480), 4 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:01,279 INFO L175 Difference]: Start difference. First operand has 77 places, 103 transitions, 429 flow. Second operand 3 states and 1151 transitions. [2023-11-06 22:38:01,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 588 flow [2023-11-06 22:38:01,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 97 transitions, 544 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-11-06 22:38:01,284 INFO L231 Difference]: Finished difference. Result has 76 places, 97 transitions, 352 flow [2023-11-06 22:38:01,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=870, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=76, PETRI_TRANSITIONS=97} [2023-11-06 22:38:01,286 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -5 predicate places. [2023-11-06 22:38:01,286 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 97 transitions, 352 flow [2023-11-06 22:38:01,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 361.25) internal successors, (1445), 4 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:01,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:01,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:38:01,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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)] Ended with exit code 0 [2023-11-06 22:38:01,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:38:01,500 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:38:01,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:01,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1515519175, now seen corresponding path program 1 times [2023-11-06 22:38:01,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:38:01,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055856615] [2023-11-06 22:38:01,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:01,501 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 22:38:01,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:38:01,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:38:01,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:38:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:01,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:38:01,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:01,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:01,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:01,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:01,759 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-06 22:38:01,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:01,786 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-06 22:38:01,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:01,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:01,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:01,839 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 22:38:01,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:01,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:01,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:01,877 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 22:38:01,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:01,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:01,898 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 22:38:01,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:01,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:01,920 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 22:38:01,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:01,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:01,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:01,964 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 22:38:02,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:02,012 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:38:02,098 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:38:02,098 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-06 22:38:02,232 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 22:38:02,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:38:02,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:02,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:38:02,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055856615] [2023-11-06 22:38:02,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055856615] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:38:02,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:38:02,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-11-06 22:38:02,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488425521] [2023-11-06 22:38:02,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:02,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:38:02,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:38:02,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:38:02,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:38:08,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 870 [2023-11-06 22:38:08,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 97 transitions, 352 flow. Second operand has 6 states, 6 states have (on average 334.8333333333333) internal successors, (2009), 6 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:08,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:08,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 870 [2023-11-06 22:38:08,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:12,763 INFO L124 PetriNetUnfolderBase]: 9848/13873 cut-off events. [2023-11-06 22:38:12,763 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-06 22:38:12,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28035 conditions, 13873 events. 9848/13873 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 75228 event pairs, 8309 based on Foata normal form. 0/5619 useless extension candidates. Maximal degree in co-relation 28023. Up to 13873 conditions per place. [2023-11-06 22:38:12,874 INFO L140 encePairwiseOnDemand]: 867/870 looper letters, 90 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-11-06 22:38:12,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 91 transitions, 506 flow [2023-11-06 22:38:12,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:38:12,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:38:12,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1071 transitions. [2023-11-06 22:38:12,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103448275862069 [2023-11-06 22:38:12,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1071 transitions. [2023-11-06 22:38:12,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1071 transitions. [2023-11-06 22:38:12,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:12,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1071 transitions. [2023-11-06 22:38:12,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 357.0) internal successors, (1071), 3 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:12,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 870.0) internal successors, (3480), 4 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:12,902 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 870.0) internal successors, (3480), 4 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:12,903 INFO L175 Difference]: Start difference. First operand has 76 places, 97 transitions, 352 flow. Second operand 3 states and 1071 transitions. [2023-11-06 22:38:12,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 91 transitions, 506 flow [2023-11-06 22:38:12,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:38:12,909 INFO L231 Difference]: Finished difference. Result has 75 places, 91 transitions, 325 flow [2023-11-06 22:38:12,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=870, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=325, PETRI_PLACES=75, PETRI_TRANSITIONS=91} [2023-11-06 22:38:12,914 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -6 predicate places. [2023-11-06 22:38:12,914 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 91 transitions, 325 flow [2023-11-06 22:38:12,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 334.8333333333333) internal successors, (2009), 6 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:12,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:12,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:38:12,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:38:13,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:38:13,131 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:38:13,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:13,132 INFO L85 PathProgramCache]: Analyzing trace with hash -263534287, now seen corresponding path program 1 times [2023-11-06 22:38:13,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:38:13,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435248033] [2023-11-06 22:38:13,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:13,133 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 22:38:13,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:38:13,134 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:38:13,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:38:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:13,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:38:13,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:13,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,325 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-06 22:38:13,326 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 15 [2023-11-06 22:38:13,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,372 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 1 [2023-11-06 22:38:13,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,439 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:38:13,440 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-06 22:38:13,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,475 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:38:13,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,517 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-06 22:38:13,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,569 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:38:13,569 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-06 22:38:13,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,617 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-11-06 22:38:13,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,696 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:38:13,697 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-06 22:38:13,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:13,739 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-06 22:38:13,796 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:38:13,796 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 22:38:13,873 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 22:38:13,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:13,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:38:13,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435248033] [2023-11-06 22:38:13,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435248033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:13,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:13,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:38:13,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078976182] [2023-11-06 22:38:13,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:13,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:38:13,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:38:13,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:38:13,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:38:14,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 360 out of 870 [2023-11-06 22:38:14,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 91 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 361.5) internal successors, (1446), 4 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:14,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:14,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 360 of 870 [2023-11-06 22:38:14,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:16,959 INFO L124 PetriNetUnfolderBase]: 9630/13543 cut-off events. [2023-11-06 22:38:16,959 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-06 22:38:16,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27376 conditions, 13543 events. 9630/13543 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 73042 event pairs, 8121 based on Foata normal form. 0/5551 useless extension candidates. Maximal degree in co-relation 27363. Up to 13543 conditions per place. [2023-11-06 22:38:17,045 INFO L140 encePairwiseOnDemand]: 867/870 looper letters, 88 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-11-06 22:38:17,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 499 flow [2023-11-06 22:38:17,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:38:17,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:38:17,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1147 transitions. [2023-11-06 22:38:17,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.439463601532567 [2023-11-06 22:38:17,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1147 transitions. [2023-11-06 22:38:17,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1147 transitions. [2023-11-06 22:38:17,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:17,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1147 transitions. [2023-11-06 22:38:17,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 382.3333333333333) internal successors, (1147), 3 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:17,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 870.0) internal successors, (3480), 4 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:17,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 870.0) internal successors, (3480), 4 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:17,067 INFO L175 Difference]: Start difference. First operand has 75 places, 91 transitions, 325 flow. Second operand 3 states and 1147 transitions. [2023-11-06 22:38:17,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 499 flow [2023-11-06 22:38:17,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 89 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:38:17,071 INFO L231 Difference]: Finished difference. Result has 74 places, 89 transitions, 322 flow [2023-11-06 22:38:17,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=870, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=74, PETRI_TRANSITIONS=89} [2023-11-06 22:38:17,073 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -7 predicate places. [2023-11-06 22:38:17,073 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 89 transitions, 322 flow [2023-11-06 22:38:17,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 361.5) internal successors, (1446), 4 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:17,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:17,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:38:17,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-06 22:38:17,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:38:17,288 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:38:17,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:17,288 INFO L85 PathProgramCache]: Analyzing trace with hash -263534288, now seen corresponding path program 1 times [2023-11-06 22:38:17,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:38:17,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615427410] [2023-11-06 22:38:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:17,289 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 22:38:17,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:38:17,291 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:38:17,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:38:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:17,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:38:17,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:17,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,479 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-06 22:38:17,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,503 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 22:38:17,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,546 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:38:17,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,591 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 22:38:17,605 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:38:17,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,649 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 22:38:17,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,668 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 22:38:17,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,689 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 22:38:17,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,726 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 22:38:17,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,773 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:38:17,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:17,811 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:38:17,894 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 22:38:17,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:17,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:38:17,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615427410] [2023-11-06 22:38:17,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615427410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:17,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:17,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:38:17,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123815209] [2023-11-06 22:38:17,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:17,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:38:17,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:38:17,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:38:17,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:38:18,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 360 out of 870 [2023-11-06 22:38:18,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 89 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 361.5) internal successors, (1446), 4 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:18,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:18,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 360 of 870 [2023-11-06 22:38:18,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:20,784 INFO L124 PetriNetUnfolderBase]: 9412/13213 cut-off events. [2023-11-06 22:38:20,785 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-06 22:38:20,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26717 conditions, 13213 events. 9412/13213 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 70780 event pairs, 7933 based on Foata normal form. 0/5483 useless extension candidates. Maximal degree in co-relation 26703. Up to 13213 conditions per place. [2023-11-06 22:38:20,867 INFO L140 encePairwiseOnDemand]: 867/870 looper letters, 86 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2023-11-06 22:38:20,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 87 transitions, 492 flow [2023-11-06 22:38:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:38:20,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:38:20,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1145 transitions. [2023-11-06 22:38:20,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4386973180076628 [2023-11-06 22:38:20,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1145 transitions. [2023-11-06 22:38:20,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1145 transitions. [2023-11-06 22:38:20,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:20,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1145 transitions. [2023-11-06 22:38:20,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 381.6666666666667) internal successors, (1145), 3 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:20,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 870.0) internal successors, (3480), 4 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:20,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 870.0) internal successors, (3480), 4 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:20,887 INFO L175 Difference]: Start difference. First operand has 74 places, 89 transitions, 322 flow. Second operand 3 states and 1145 transitions. [2023-11-06 22:38:20,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 87 transitions, 492 flow [2023-11-06 22:38:20,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 87 transitions, 491 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:38:20,892 INFO L231 Difference]: Finished difference. Result has 73 places, 87 transitions, 319 flow [2023-11-06 22:38:20,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=870, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=73, PETRI_TRANSITIONS=87} [2023-11-06 22:38:20,893 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -8 predicate places. [2023-11-06 22:38:20,893 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 87 transitions, 319 flow [2023-11-06 22:38:20,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 361.5) internal successors, (1446), 4 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:20,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:20,895 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:38:20,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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)] Ended with exit code 0 [2023-11-06 22:38:21,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:38:21,113 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:38:21,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:21,114 INFO L85 PathProgramCache]: Analyzing trace with hash -361542697, now seen corresponding path program 2 times [2023-11-06 22:38:21,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:38:21,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018212160] [2023-11-06 22:38:21,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:38:21,115 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 22:38:21,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:38:21,116 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:38:21,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:38:21,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:38:21,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:38:21,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:38:21,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:21,278 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 22:38:21,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,304 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 22:38:21,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,313 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 22:38:21,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,324 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 22:38:21,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,335 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 22:38:21,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,347 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 22:38:21,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,359 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:38:21,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,373 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 22:38:21,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,389 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:38:21,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,416 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 22:38:21,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,427 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 22:38:21,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,442 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:38:21,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,475 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 22:38:21,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,488 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:38:21,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,517 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 22:38:21,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,558 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 22:38:21,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,575 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 22:38:21,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,601 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 22:38:21,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,619 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 22:38:21,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,645 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 22:38:21,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,656 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 22:38:21,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,669 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 22:38:21,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,680 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 22:38:21,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:38:21,693 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 22:38:21,911 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 22:38:21,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:38:22,687 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 22:38:22,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:38:22,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018212160] [2023-11-06 22:38:22,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018212160] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:38:22,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:38:22,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:38:22,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399493929] [2023-11-06 22:38:22,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:38:22,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:38:22,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:38:22,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:38:22,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:38:34,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 870 [2023-11-06 22:38:34,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 87 transitions, 319 flow. Second operand has 12 states, 12 states have (on average 337.0) internal successors, (4044), 12 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:34,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:34,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 870 [2023-11-06 22:38:34,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:38,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:38:40,506 WARN L539 Checker$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 22:38:42,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:38:44,571 WARN L539 Checker$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 22:38:47,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:38:49,547 WARN L539 Checker$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 22:38:51,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:38:53,579 WARN L539 Checker$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 22:38:57,333 INFO L124 PetriNetUnfolderBase]: 9422/13233 cut-off events. [2023-11-06 22:38:57,334 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-11-06 22:38:57,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26790 conditions, 13233 events. 9422/13233 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 70829 event pairs, 7933 based on Foata normal form. 10/5503 useless extension candidates. Maximal degree in co-relation 26775. Up to 13196 conditions per place. [2023-11-06 22:38:57,420 INFO L140 encePairwiseOnDemand]: 860/870 looper letters, 62 selfloop transitions, 45 changer transitions 0/107 dead transitions. [2023-11-06 22:38:57,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 107 transitions, 645 flow [2023-11-06 22:38:57,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:38:57,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:38:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4149 transitions. [2023-11-06 22:38:57,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39741379310344827 [2023-11-06 22:38:57,438 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4149 transitions. [2023-11-06 22:38:57,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4149 transitions. [2023-11-06 22:38:57,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:57,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4149 transitions. [2023-11-06 22:38:57,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 345.75) internal successors, (4149), 12 states have internal predecessors, (4149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:57,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 870.0) internal successors, (11310), 13 states have internal predecessors, (11310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:57,482 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 870.0) internal successors, (11310), 13 states have internal predecessors, (11310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:57,482 INFO L175 Difference]: Start difference. First operand has 73 places, 87 transitions, 319 flow. Second operand 12 states and 4149 transitions. [2023-11-06 22:38:57,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 107 transitions, 645 flow [2023-11-06 22:38:57,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 107 transitions, 644 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:38:57,488 INFO L231 Difference]: Finished difference. Result has 89 places, 107 transitions, 578 flow [2023-11-06 22:38:57,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=870, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=578, PETRI_PLACES=89, PETRI_TRANSITIONS=107} [2023-11-06 22:38:57,489 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 8 predicate places. [2023-11-06 22:38:57,489 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 107 transitions, 578 flow [2023-11-06 22:38:57,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 337.0) internal successors, (4044), 12 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:57,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:57,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:57,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:38:57,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:38:57,715 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:38:57,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:57,716 INFO L85 PathProgramCache]: Analyzing trace with hash 420366025, now seen corresponding path program 1 times [2023-11-06 22:38:57,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:38:57,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984121223] [2023-11-06 22:38:57,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:57,717 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 22:38:57,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:38:57,718 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:38:57,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:38:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:57,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:38:57,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:57,912 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 22:38:57,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:57,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:38:57,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984121223] [2023-11-06 22:38:57,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984121223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:57,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:57,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:38:57,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242112339] [2023-11-06 22:38:57,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:57,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:38:57,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:38:57,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:38:57,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:38:58,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 870 [2023-11-06 22:38:58,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 107 transitions, 578 flow. Second operand has 5 states, 5 states have (on average 347.4) internal successors, (1737), 5 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:58,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:58,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 870 [2023-11-06 22:38:58,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:02,316 INFO L124 PetriNetUnfolderBase]: 11482/16298 cut-off events. [2023-11-06 22:39:02,317 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2023-11-06 22:39:02,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33150 conditions, 16298 events. 11482/16298 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 92393 event pairs, 8238 based on Foata normal form. 0/7204 useless extension candidates. Maximal degree in co-relation 33128. Up to 13232 conditions per place. [2023-11-06 22:39:02,461 INFO L140 encePairwiseOnDemand]: 861/870 looper letters, 202 selfloop transitions, 4 changer transitions 0/206 dead transitions. [2023-11-06 22:39:02,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 206 transitions, 1387 flow [2023-11-06 22:39:02,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:39:02,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:39:02,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1875 transitions. [2023-11-06 22:39:02,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066 [2023-11-06 22:39:02,470 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1875 transitions. [2023-11-06 22:39:02,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1875 transitions. [2023-11-06 22:39:02,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:02,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1875 transitions. [2023-11-06 22:39:02,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 375.0) internal successors, (1875), 5 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:02,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 870.0) internal successors, (5220), 6 states have internal predecessors, (5220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:02,486 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 870.0) internal successors, (5220), 6 states have internal predecessors, (5220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:02,486 INFO L175 Difference]: Start difference. First operand has 89 places, 107 transitions, 578 flow. Second operand 5 states and 1875 transitions. [2023-11-06 22:39:02,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 206 transitions, 1387 flow [2023-11-06 22:39:02,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 206 transitions, 1191 flow, removed 47 selfloop flow, removed 5 redundant places. [2023-11-06 22:39:02,497 INFO L231 Difference]: Finished difference. Result has 90 places, 108 transitions, 473 flow [2023-11-06 22:39:02,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=870, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=473, PETRI_PLACES=90, PETRI_TRANSITIONS=108} [2023-11-06 22:39:02,499 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 9 predicate places. [2023-11-06 22:39:02,499 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 108 transitions, 473 flow [2023-11-06 22:39:02,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 347.4) internal successors, (1737), 5 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:02,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:02,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:02,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:02,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:39:02,715 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:39:02,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:02,716 INFO L85 PathProgramCache]: Analyzing trace with hash 146656649, now seen corresponding path program 1 times [2023-11-06 22:39:02,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:39:02,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75056807] [2023-11-06 22:39:02,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:02,717 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 22:39:02,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:39:02,718 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:39:02,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:39:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:02,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:39:02,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:02,907 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-06 22:39:02,907 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 19 treesize of output 15 [2023-11-06 22:39:02,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:02,927 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:39:02,928 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:39:02,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:02,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:02,961 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:39:02,962 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-06 22:39:02,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:02,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:03,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:03,020 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:39:03,020 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-06 22:39:03,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:03,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:03,052 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:39:03,052 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-06 22:39:03,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:03,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:03,088 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:39:03,088 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-06 22:39:03,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:03,104 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:39:03,105 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:39:03,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:03,118 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:39:03,118 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 22:39:03,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:03,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:03,159 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:39:03,159 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-06 22:39:03,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:03,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:03,195 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:39:03,195 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-06 22:39:03,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:03,209 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:39:03,209 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:39:03,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:03,223 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 22:39:03,223 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 1 [2023-11-06 22:39:03,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:03,253 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-06 22:39:03,313 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:39:03,313 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 22:39:03,413 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 22:39:03,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:03,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:39:03,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75056807] [2023-11-06 22:39:03,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75056807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:03,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:03,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:39:03,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779750647] [2023-11-06 22:39:03,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:03,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:39:03,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:39:03,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:39:03,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:39:04,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 356 out of 870 [2023-11-06 22:39:04,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 108 transitions, 473 flow. Second operand has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:04,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:04,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 356 of 870 [2023-11-06 22:39:04,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:07,337 INFO L124 PetriNetUnfolderBase]: 10975/15539 cut-off events. [2023-11-06 22:39:07,337 INFO L125 PetriNetUnfolderBase]: For 1464/1464 co-relation queries the response was YES. [2023-11-06 22:39:07,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33459 conditions, 15539 events. 10975/15539 cut-off events. For 1464/1464 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 86861 event pairs, 9285 based on Foata normal form. 0/7260 useless extension candidates. Maximal degree in co-relation 33435. Up to 15539 conditions per place. [2023-11-06 22:39:07,451 INFO L140 encePairwiseOnDemand]: 867/870 looper letters, 105 selfloop transitions, 1 changer transitions 0/106 dead transitions. [2023-11-06 22:39:07,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 106 transitions, 681 flow [2023-11-06 22:39:07,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:39:07,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:39:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1131 transitions. [2023-11-06 22:39:07,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2023-11-06 22:39:07,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1131 transitions. [2023-11-06 22:39:07,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1131 transitions. [2023-11-06 22:39:07,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:07,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1131 transitions. [2023-11-06 22:39:07,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 377.0) internal successors, (1131), 3 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:07,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 870.0) internal successors, (3480), 4 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:07,465 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 870.0) internal successors, (3480), 4 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:07,466 INFO L175 Difference]: Start difference. First operand has 90 places, 108 transitions, 473 flow. Second operand 3 states and 1131 transitions. [2023-11-06 22:39:07,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 106 transitions, 681 flow [2023-11-06 22:39:07,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 106 transitions, 675 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:39:07,475 INFO L231 Difference]: Finished difference. Result has 89 places, 106 transitions, 465 flow [2023-11-06 22:39:07,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=870, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=465, PETRI_PLACES=89, PETRI_TRANSITIONS=106} [2023-11-06 22:39:07,476 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 8 predicate places. [2023-11-06 22:39:07,476 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 106 transitions, 465 flow [2023-11-06 22:39:07,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:07,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:07,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:07,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:39:07,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:39:07,692 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:39:07,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:07,693 INFO L85 PathProgramCache]: Analyzing trace with hash -806782798, now seen corresponding path program 1 times [2023-11-06 22:39:07,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:39:07,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950344409] [2023-11-06 22:39:07,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:07,693 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 22:39:07,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:39:07,694 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:39:07,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:39:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:07,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:39:07,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:07,930 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 22:39:07,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:07,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:39:07,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950344409] [2023-11-06 22:39:07,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950344409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:07,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:07,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:39:07,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063754596] [2023-11-06 22:39:07,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:07,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:39:07,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:39:07,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:39:07,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:39:08,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 870 [2023-11-06 22:39:08,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 106 transitions, 465 flow. Second operand has 5 states, 5 states have (on average 347.6) internal successors, (1738), 5 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:08,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:08,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 870 [2023-11-06 22:39:08,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:12,658 INFO L124 PetriNetUnfolderBase]: 14921/21381 cut-off events. [2023-11-06 22:39:12,658 INFO L125 PetriNetUnfolderBase]: For 2442/2442 co-relation queries the response was YES. [2023-11-06 22:39:12,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46021 conditions, 21381 events. 14921/21381 cut-off events. For 2442/2442 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 128886 event pairs, 9869 based on Foata normal form. 240/10790 useless extension candidates. Maximal degree in co-relation 45996. Up to 15527 conditions per place. [2023-11-06 22:39:12,850 INFO L140 encePairwiseOnDemand]: 861/870 looper letters, 173 selfloop transitions, 15 changer transitions 0/188 dead transitions. [2023-11-06 22:39:12,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 188 transitions, 1080 flow [2023-11-06 22:39:12,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:39:12,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:39:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1867 transitions. [2023-11-06 22:39:12,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42919540229885056 [2023-11-06 22:39:12,859 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1867 transitions. [2023-11-06 22:39:12,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1867 transitions. [2023-11-06 22:39:12,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:12,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1867 transitions. [2023-11-06 22:39:12,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 373.4) internal successors, (1867), 5 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:12,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 870.0) internal successors, (5220), 6 states have internal predecessors, (5220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:12,876 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 870.0) internal successors, (5220), 6 states have internal predecessors, (5220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:12,877 INFO L175 Difference]: Start difference. First operand has 89 places, 106 transitions, 465 flow. Second operand 5 states and 1867 transitions. [2023-11-06 22:39:12,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 188 transitions, 1080 flow [2023-11-06 22:39:12,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 188 transitions, 1079 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:39:12,892 INFO L231 Difference]: Finished difference. Result has 94 places, 108 transitions, 523 flow [2023-11-06 22:39:12,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=870, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=523, PETRI_PLACES=94, PETRI_TRANSITIONS=108} [2023-11-06 22:39:12,893 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 13 predicate places. [2023-11-06 22:39:12,893 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 108 transitions, 523 flow [2023-11-06 22:39:12,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 347.6) internal successors, (1738), 5 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:12,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:12,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:12,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:39:13,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:39:13,109 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:39:13,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:13,109 INFO L85 PathProgramCache]: Analyzing trace with hash 146656648, now seen corresponding path program 1 times [2023-11-06 22:39:13,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:39:13,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674187740] [2023-11-06 22:39:13,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:13,110 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 22:39:13,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:39:13,111 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:39:13,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:39:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:13,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:39:13,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:13,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,350 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-06 22:39:13,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,371 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-06 22:39:13,403 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:13,410 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:13,416 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:13,437 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:13,443 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:13,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,472 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:39:13,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,518 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 22:39:13,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,538 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:39:13,555 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:13,576 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:13,582 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:39:13,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,600 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 22:39:13,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,618 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 22:39:13,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,648 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 22:39:13,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,665 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 22:39:13,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,713 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:39:13,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:39:13,748 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 22:39:13,869 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 22:39:13,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:13,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:39:13,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674187740] [2023-11-06 22:39:13,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674187740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:13,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:13,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:39:13,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681278224] [2023-11-06 22:39:13,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:13,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:39:13,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:39:13,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:39:13,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:39:14,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 360 out of 870 [2023-11-06 22:39:14,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 108 transitions, 523 flow. Second operand has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:14,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:14,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 360 of 870 [2023-11-06 22:39:14,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:17,790 INFO L124 PetriNetUnfolderBase]: 14254/20364 cut-off events. [2023-11-06 22:39:17,790 INFO L125 PetriNetUnfolderBase]: For 6792/6792 co-relation queries the response was YES. [2023-11-06 22:39:17,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46336 conditions, 20364 events. 14254/20364 cut-off events. For 6792/6792 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 119551 event pairs, 12140 based on Foata normal form. 0/10260 useless extension candidates. Maximal degree in co-relation 46309. Up to 20364 conditions per place. [2023-11-06 22:39:17,957 INFO L140 encePairwiseOnDemand]: 867/870 looper letters, 105 selfloop transitions, 1 changer transitions 0/106 dead transitions. [2023-11-06 22:39:17,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 106 transitions, 731 flow [2023-11-06 22:39:17,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:39:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:39:17,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1141 transitions. [2023-11-06 22:39:17,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371647509578544 [2023-11-06 22:39:17,963 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1141 transitions. [2023-11-06 22:39:17,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1141 transitions. [2023-11-06 22:39:17,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:17,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1141 transitions. [2023-11-06 22:39:17,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 380.3333333333333) internal successors, (1141), 3 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:17,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 870.0) internal successors, (3480), 4 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:17,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 870.0) internal successors, (3480), 4 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:17,971 INFO L175 Difference]: Start difference. First operand has 94 places, 108 transitions, 523 flow. Second operand 3 states and 1141 transitions. [2023-11-06 22:39:17,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 106 transitions, 731 flow [2023-11-06 22:39:17,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 106 transitions, 715 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:39:17,983 INFO L231 Difference]: Finished difference. Result has 93 places, 106 transitions, 505 flow [2023-11-06 22:39:17,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=870, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=505, PETRI_PLACES=93, PETRI_TRANSITIONS=106} [2023-11-06 22:39:17,984 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2023-11-06 22:39:17,984 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 106 transitions, 505 flow [2023-11-06 22:39:17,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 362.0) internal successors, (1448), 4 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:17,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:17,985 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1] [2023-11-06 22:39:17,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:39:18,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:39:18,198 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-06 22:39:18,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:18,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1300054766, now seen corresponding path program 1 times [2023-11-06 22:39:18,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:39:18,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607685007] [2023-11-06 22:39:18,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:18,199 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 22:39:18,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:39:18,201 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:39:18,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af6ef383-7bef-4af3-9121-9ee07dff90e6/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 22:39:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:18,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:39:18,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:18,365 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 22:39:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:39:18,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:39:20,419 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:39:20,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:39:20,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607685007] [2023-11-06 22:39:20,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607685007] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:39:20,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:39:20,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-06 22:39:20,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922635441] [2023-11-06 22:39:20,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:39:20,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:39:20,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:39:20,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:39:20,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:39:45,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 870 [2023-11-06 22:39:45,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 106 transitions, 505 flow. Second operand has 16 states, 16 states have (on average 337.0625) internal successors, (5393), 16 states have internal predecessors, (5393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:39:45,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:45,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 870 [2023-11-06 22:39:45,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:52,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:39:54,060 WARN L539 Checker$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 22:39:56,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:39:58,066 WARN L539 Checker$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 22:40:00,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:40:02,077 WARN L539 Checker$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 22:40:07,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:40:09,303 WARN L539 Checker$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 22:40:11,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:40:13,309 WARN L539 Checker$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 22:40:15,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:40:17,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []