./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9008ebcceff34245d74f1892a84a552f8268a9318e8a2970f14b3ec6b594daf --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:43:31,727 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:43:31,801 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:43:31,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:43:31,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:43:31,845 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:43:31,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:43:31,848 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:43:31,849 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:43:31,855 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:43:31,855 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:43:31,856 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:43:31,857 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:43:31,859 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:43:31,860 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:43:31,860 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:43:31,861 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:43:31,861 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:43:31,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:43:31,863 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:43:31,863 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:43:31,864 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:43:31,864 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:43:31,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:43:31,865 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:43:31,866 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:43:31,866 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:43:31,867 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:43:31,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:43:31,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:43:31,870 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:43:31,870 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:43:31,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:43:31,882 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:43:31,882 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:43:31,882 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:43:31,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:43:31,883 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:43:31,883 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:43:31,884 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:43:31,884 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:43:31,885 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_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9008ebcceff34245d74f1892a84a552f8268a9318e8a2970f14b3ec6b594daf [2023-11-24 21:43:32,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:43:32,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:43:32,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:43:32,215 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:43:32,215 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:43:32,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2023-11-24 21:43:35,365 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:43:35,677 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:43:35,678 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2023-11-24 21:43:35,691 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/data/5461c2012/dcfe048285b34531983258f52af2e9da/FLAG41f3f8122 [2023-11-24 21:43:35,713 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/data/5461c2012/dcfe048285b34531983258f52af2e9da [2023-11-24 21:43:35,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:43:35,725 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:43:35,729 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:43:35,729 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:43:35,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:43:35,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:43:35" (1/1) ... [2023-11-24 21:43:35,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af6cba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:43:35, skipping insertion in model container [2023-11-24 21:43:35,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:43:35" (1/1) ... [2023-11-24 21:43:35,789 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:43:36,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:43:36,028 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-24 21:43:36,029 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@45dea3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:43:36, skipping insertion in model container [2023-11-24 21:43:36,029 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:43:36,029 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:43:36,031 INFO L158 Benchmark]: Toolchain (without parser) took 305.03ms. Allocated memory is still 148.9MB. Free memory was 110.9MB in the beginning and 99.9MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 21:43:36,032 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 148.9MB. Free memory is still 117.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:43:36,032 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.02ms. Allocated memory is still 148.9MB. Free memory was 110.9MB in the beginning and 99.9MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 21:43:36,034 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 148.9MB. Free memory is still 117.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.02ms. Allocated memory is still 148.9MB. Free memory was 110.9MB in the beginning and 99.9MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 118]: 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_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9008ebcceff34245d74f1892a84a552f8268a9318e8a2970f14b3ec6b594daf --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:43:38,460 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:43:38,576 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:43:38,582 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:43:38,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:43:38,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:43:38,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:43:38,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:43:38,659 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:43:38,659 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:43:38,660 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:43:38,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:43:38,661 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:43:38,662 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:43:38,666 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:43:38,666 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:43:38,668 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:43:38,672 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:43:38,673 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:43:38,673 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:43:38,675 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:43:38,675 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:43:38,676 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:43:38,676 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:43:38,676 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:43:38,677 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:43:38,677 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:43:38,678 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:43:38,678 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:43:38,679 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:43:38,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:43:38,681 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:43:38,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:43:38,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:43:38,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:43:38,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:43:38,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:43:38,683 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:43:38,684 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:43:38,684 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:43:38,684 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:43:38,684 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:43:38,685 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:43:38,685 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:43:38,685 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_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9008ebcceff34245d74f1892a84a552f8268a9318e8a2970f14b3ec6b594daf [2023-11-24 21:43:39,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:43:39,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:43:39,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:43:39,160 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:43:39,160 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:43:39,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2023-11-24 21:43:42,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:43:42,732 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:43:42,733 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2023-11-24 21:43:42,742 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/data/686dc9603/1f5de793bc9d443ea9b35cd548129604/FLAG2678b8e46 [2023-11-24 21:43:42,755 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/data/686dc9603/1f5de793bc9d443ea9b35cd548129604 [2023-11-24 21:43:42,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:43:42,759 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:43:42,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:43:42,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:43:42,766 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:43:42,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:43:42" (1/1) ... [2023-11-24 21:43:42,768 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32183ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:43:42, skipping insertion in model container [2023-11-24 21:43:42,768 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:43:42" (1/1) ... [2023-11-24 21:43:42,796 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:43:43,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:43:43,045 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:43:43,050 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:43:43,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:43:43,085 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:43:43,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:43:43,139 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:43:43,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:43:43 WrapperNode [2023-11-24 21:43:43,140 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:43:43,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:43:43,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:43:43,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:43:43,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:43:43" (1/1) ... [2023-11-24 21:43:43,164 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:43:43" (1/1) ... [2023-11-24 21:43:43,215 INFO L138 Inliner]: procedures = 29, calls = 67, calls flagged for inlining = 23, calls inlined = 35, statements flattened = 423 [2023-11-24 21:43:43,215 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:43:43,216 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:43:43,216 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:43:43,216 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:43:43,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:43:43" (1/1) ... [2023-11-24 21:43:43,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:43:43" (1/1) ... [2023-11-24 21:43:43,257 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:43:43" (1/1) ... [2023-11-24 21:43:43,293 INFO L175 MemorySlicer]: Split 32 memory accesses to 6 slices as follows [2, 9, 2, 2, 2, 15]. 47 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 9 writes are split as follows [0, 3, 1, 1, 1, 3]. [2023-11-24 21:43:43,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:43:43" (1/1) ... [2023-11-24 21:43:43,322 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:43:43" (1/1) ... [2023-11-24 21:43:43,357 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:43:43" (1/1) ... [2023-11-24 21:43:43,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:43:43" (1/1) ... [2023-11-24 21:43:43,379 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:43:43" (1/1) ... [2023-11-24 21:43:43,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:43:43" (1/1) ... [2023-11-24 21:43:43,395 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:43:43,399 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:43:43,401 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:43:43,401 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:43:43,402 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:43:43" (1/1) ... [2023-11-24 21:43:43,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:43:43,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:43:43,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:43:43,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:43:43,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:43:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-24 21:43:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-24 21:43:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-24 21:43:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-24 21:43:43,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-11-24 21:43:43,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-11-24 21:43:43,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:43:43,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:43:43,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:43:43,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 21:43:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-24 21:43:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-11-24 21:43:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:43:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:43:43,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:43:43,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:43:43,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-24 21:43:43,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-24 21:43:43,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5 [2023-11-24 21:43:43,500 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 21:43:43,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 21:43:43,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 21:43:43,501 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 21:43:43,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 21:43:43,501 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 21:43:43,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:43:43,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:43:43,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:43:43,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-11-24 21:43:43,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-11-24 21:43:43,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-11-24 21:43:43,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-11-24 21:43:43,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-11-24 21:43:43,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-11-24 21:43:43,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:43:43,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:43:43,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:43:43,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:43:43,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 21:43:43,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-24 21:43:43,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5 [2023-11-24 21:43:43,506 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:43:43,744 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:43:43,746 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:43:45,026 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:43:45,645 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:43:45,645 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-24 21:43:45,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:43:45 BoogieIcfgContainer [2023-11-24 21:43:45,647 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:43:45,650 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:43:45,651 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:43:45,654 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:43:45,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:43:42" (1/3) ... [2023-11-24 21:43:45,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e766f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:43:45, skipping insertion in model container [2023-11-24 21:43:45,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:43:43" (2/3) ... [2023-11-24 21:43:45,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e766f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:43:45, skipping insertion in model container [2023-11-24 21:43:45,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:43:45" (3/3) ... [2023-11-24 21:43:45,660 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2023-11-24 21:43:45,680 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:43:45,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2023-11-24 21:43:45,680 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:43:45,819 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-24 21:43:45,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 140 transitions, 301 flow [2023-11-24 21:43:45,972 INFO L124 PetriNetUnfolderBase]: 12/137 cut-off events. [2023-11-24 21:43:45,972 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-24 21:43:45,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 137 events. 12/137 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 459 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2023-11-24 21:43:45,980 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 140 transitions, 301 flow [2023-11-24 21:43:45,992 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 136 transitions, 290 flow [2023-11-24 21:43:46,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:43:46,024 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;@25920281, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:43:46,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 101 error locations. [2023-11-24 21:43:46,029 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:43:46,029 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-24 21:43:46,030 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:43:46,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:43:46,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:43:46,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-24 21:43:46,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:43:46,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1317921, now seen corresponding path program 1 times [2023-11-24 21:43:46,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:43:46,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687568243] [2023-11-24 21:43:46,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:43:46,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:43:46,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:43:46,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:43:46,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 21:43:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:43:46,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:43:46,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:43:46,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 21:43:46,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:43:46,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:43:46,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:43:46,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:43:46,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:43:46,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:43:46,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:43:46,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:43:46,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-24 21:43:46,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:43:46,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:43:46,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:43:46,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:43:46,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:43:46,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:43:46,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:43:46,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:43:46,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:43:46,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:43:46,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:43:46,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:43:46,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:43:46,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:46,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:43:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:43:46,627 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:43:46,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:43:46,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687568243] [2023-11-24 21:43:46,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687568243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:43:46,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:43:46,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:43:46,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184246615] [2023-11-24 21:43:46,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:43:46,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:43:46,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:43:46,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:43:46,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:43:46,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 140 [2023-11-24 21:43:46,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 136 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:43:46,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:43:46,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 140 [2023-11-24 21:43:46,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:43:48,213 INFO L124 PetriNetUnfolderBase]: 2179/5080 cut-off events. [2023-11-24 21:43:48,214 INFO L125 PetriNetUnfolderBase]: For 201/209 co-relation queries the response was YES. [2023-11-24 21:43:48,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8150 conditions, 5080 events. 2179/5080 cut-off events. For 201/209 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 42406 event pairs, 1382 based on Foata normal form. 1/3816 useless extension candidates. Maximal degree in co-relation 7429. Up to 2910 conditions per place. [2023-11-24 21:43:48,283 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 48 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-11-24 21:43:48,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 131 transitions, 380 flow [2023-11-24 21:43:48,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:43:48,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:43:48,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-11-24 21:43:48,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7357142857142858 [2023-11-24 21:43:48,300 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-11-24 21:43:48,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-11-24 21:43:48,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:43:48,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-11-24 21:43:48,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:43:48,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:43:48,315 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:43:48,317 INFO L175 Difference]: Start difference. First operand has 134 places, 136 transitions, 290 flow. Second operand 3 states and 309 transitions. [2023-11-24 21:43:48,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 131 transitions, 380 flow [2023-11-24 21:43:48,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 131 transitions, 368 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-24 21:43:48,330 INFO L231 Difference]: Finished difference. Result has 125 places, 131 transitions, 272 flow [2023-11-24 21:43:48,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=125, PETRI_TRANSITIONS=131} [2023-11-24 21:43:48,336 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -9 predicate places. [2023-11-24 21:43:48,337 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 131 transitions, 272 flow [2023-11-24 21:43:48,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:43:48,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:43:48,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:43:48,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:43:48,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:43:48,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-24 21:43:48,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:43:48,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1317922, now seen corresponding path program 1 times [2023-11-24 21:43:48,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:43:48,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795368081] [2023-11-24 21:43:48,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:43:48,543 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:43:48,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:43:48,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:43:48,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-24 21:43:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:43:48,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:43:48,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:43:48,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-24 21:43:48,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:48,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:43:48,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:48,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:48,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:48,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:43:48,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:48,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:43:48,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:48,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:48,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:48,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:43:48,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:48,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:48,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:48,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:43:48,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:48,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-24 21:43:48,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:48,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:48,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:48,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:43:49,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:49,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:49,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:49,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:43:49,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:49,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:43:49,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:49,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:49,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:49,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:43:49,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:49,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:49,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:49,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:49,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:49,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:43:49,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:49,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:43:49,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:49,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:49,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:49,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:43:49,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:49,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:49,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:43:49,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:43:49,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:43:49,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795368081] [2023-11-24 21:43:49,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795368081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:43:49,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:43:49,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:43:49,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548935701] [2023-11-24 21:43:49,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:43:49,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:43:49,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:43:49,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:43:49,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:43:49,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 140 [2023-11-24 21:43:49,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 131 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:43:49,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:43:49,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 140 [2023-11-24 21:43:49,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:43:51,206 INFO L124 PetriNetUnfolderBase]: 2181/5088 cut-off events. [2023-11-24 21:43:51,207 INFO L125 PetriNetUnfolderBase]: For 47/55 co-relation queries the response was YES. [2023-11-24 21:43:51,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8071 conditions, 5088 events. 2181/5088 cut-off events. For 47/55 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 42421 event pairs, 1382 based on Foata normal form. 0/3820 useless extension candidates. Maximal degree in co-relation 8023. Up to 2923 conditions per place. [2023-11-24 21:43:51,274 INFO L140 encePairwiseOnDemand]: 128/140 looper letters, 52 selfloop transitions, 9 changer transitions 0/139 dead transitions. [2023-11-24 21:43:51,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 139 transitions, 412 flow [2023-11-24 21:43:51,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:43:51,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:43:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 405 transitions. [2023-11-24 21:43:51,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7232142857142857 [2023-11-24 21:43:51,278 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 405 transitions. [2023-11-24 21:43:51,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 405 transitions. [2023-11-24 21:43:51,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:43:51,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 405 transitions. [2023-11-24 21:43:51,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:43:51,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:43:51,284 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:43:51,284 INFO L175 Difference]: Start difference. First operand has 125 places, 131 transitions, 272 flow. Second operand 4 states and 405 transitions. [2023-11-24 21:43:51,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 139 transitions, 412 flow [2023-11-24 21:43:51,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 139 transitions, 406 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:43:51,289 INFO L231 Difference]: Finished difference. Result has 129 places, 138 transitions, 338 flow [2023-11-24 21:43:51,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=338, PETRI_PLACES=129, PETRI_TRANSITIONS=138} [2023-11-24 21:43:51,291 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -5 predicate places. [2023-11-24 21:43:51,291 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 138 transitions, 338 flow [2023-11-24 21:43:51,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:43:51,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:43:51,292 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-24 21:43:51,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:43:51,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:43:51,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-24 21:43:51,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:43:51,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1266565717, now seen corresponding path program 1 times [2023-11-24 21:43:51,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:43:51,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749329090] [2023-11-24 21:43:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:43:51,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:43:51,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:43:51,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:43:51,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-24 21:43:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:43:51,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:43:51,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:43:51,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-24 21:43:51,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:43:51,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:43:51,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:51,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:43:51,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:51,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:43:51,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:51,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:51,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:43:51,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:43:51,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:51,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:43:51,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:51,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:51,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:43:51,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:43:51,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:51,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-24 21:43:51,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:43:51,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:43:51,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:51,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:51,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:43:52,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:43:52,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:43:52,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:43:52,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:43:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:43:52,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:43:52,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749329090] [2023-11-24 21:43:52,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749329090] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:43:52,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:43:52,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-24 21:43:52,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236008921] [2023-11-24 21:43:52,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:43:52,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:43:52,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:43:52,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:43:52,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:43:55,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 140 [2023-11-24 21:43:55,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 138 transitions, 338 flow. Second operand has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:43:55,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:43:55,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 140 [2023-11-24 21:43:55,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:43:59,114 INFO L124 PetriNetUnfolderBase]: 2190/5115 cut-off events. [2023-11-24 21:43:59,114 INFO L125 PetriNetUnfolderBase]: For 55/63 co-relation queries the response was YES. [2023-11-24 21:43:59,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8182 conditions, 5115 events. 2190/5115 cut-off events. For 55/63 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 42542 event pairs, 1382 based on Foata normal form. 0/3846 useless extension candidates. Maximal degree in co-relation 8036. Up to 2926 conditions per place. [2023-11-24 21:43:59,175 INFO L140 encePairwiseOnDemand]: 127/140 looper letters, 52 selfloop transitions, 36 changer transitions 0/166 dead transitions. [2023-11-24 21:43:59,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 166 transitions, 630 flow [2023-11-24 21:43:59,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:43:59,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:43:59,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 947 transitions. [2023-11-24 21:43:59,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6764285714285714 [2023-11-24 21:43:59,181 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 947 transitions. [2023-11-24 21:43:59,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 947 transitions. [2023-11-24 21:43:59,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:43:59,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 947 transitions. [2023-11-24 21:43:59,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 94.7) internal successors, (947), 10 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:43:59,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 140.0) internal successors, (1540), 11 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:43:59,194 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 140.0) internal successors, (1540), 11 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:43:59,194 INFO L175 Difference]: Start difference. First operand has 129 places, 138 transitions, 338 flow. Second operand 10 states and 947 transitions. [2023-11-24 21:43:59,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 166 transitions, 630 flow [2023-11-24 21:43:59,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 166 transitions, 630 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 21:43:59,202 INFO L231 Difference]: Finished difference. Result has 141 places, 166 transitions, 578 flow [2023-11-24 21:43:59,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=578, PETRI_PLACES=141, PETRI_TRANSITIONS=166} [2023-11-24 21:43:59,204 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 7 predicate places. [2023-11-24 21:43:59,205 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 166 transitions, 578 flow [2023-11-24 21:43:59,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:43:59,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:43:59,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:43:59,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:43:59,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:43:59,408 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-24 21:43:59,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:43:59,409 INFO L85 PathProgramCache]: Analyzing trace with hash 972819537, now seen corresponding path program 1 times [2023-11-24 21:43:59,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:43:59,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420997431] [2023-11-24 21:43:59,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:43:59,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:43:59,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:43:59,411 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:43:59,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-24 21:43:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:43:59,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:43:59,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:43:59,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:43:59,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:43:59,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:43:59,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:43:59,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420997431] [2023-11-24 21:43:59,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420997431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:43:59,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:43:59,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:43:59,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36014133] [2023-11-24 21:43:59,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:43:59,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:43:59,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:43:59,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:43:59,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:44:00,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 140 [2023-11-24 21:44:00,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 166 transitions, 578 flow. Second operand has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:00,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:00,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 140 [2023-11-24 21:44:00,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:01,777 INFO L124 PetriNetUnfolderBase]: 2191/5119 cut-off events. [2023-11-24 21:44:01,777 INFO L125 PetriNetUnfolderBase]: For 82/90 co-relation queries the response was YES. [2023-11-24 21:44:01,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8255 conditions, 5119 events. 2191/5119 cut-off events. For 82/90 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 42566 event pairs, 1382 based on Foata normal form. 0/3855 useless extension candidates. Maximal degree in co-relation 8168. Up to 2953 conditions per place. [2023-11-24 21:44:01,826 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 82 selfloop transitions, 9 changer transitions 0/169 dead transitions. [2023-11-24 21:44:01,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 169 transitions, 766 flow [2023-11-24 21:44:01,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:44:01,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:44:01,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 482 transitions. [2023-11-24 21:44:01,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6885714285714286 [2023-11-24 21:44:01,829 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 482 transitions. [2023-11-24 21:44:01,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 482 transitions. [2023-11-24 21:44:01,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:01,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 482 transitions. [2023-11-24 21:44:01,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:01,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:01,835 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:01,835 INFO L175 Difference]: Start difference. First operand has 141 places, 166 transitions, 578 flow. Second operand 5 states and 482 transitions. [2023-11-24 21:44:01,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 169 transitions, 766 flow [2023-11-24 21:44:01,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 169 transitions, 683 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-11-24 21:44:01,843 INFO L231 Difference]: Finished difference. Result has 143 places, 169 transitions, 536 flow [2023-11-24 21:44:01,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=536, PETRI_PLACES=143, PETRI_TRANSITIONS=169} [2023-11-24 21:44:01,846 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 9 predicate places. [2023-11-24 21:44:01,846 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 169 transitions, 536 flow [2023-11-24 21:44:01,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:01,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:01,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:01,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:44:02,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:44:02,051 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-24 21:44:02,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:02,051 INFO L85 PathProgramCache]: Analyzing trace with hash 972819536, now seen corresponding path program 1 times [2023-11-24 21:44:02,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:44:02,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245473303] [2023-11-24 21:44:02,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:02,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:44:02,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:44:02,054 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:44:02,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-24 21:44:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:02,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:44:02,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:44:02,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:44:02,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:44:02,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:44:02,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:44:02,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245473303] [2023-11-24 21:44:02,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245473303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:02,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:02,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:44:02,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966494270] [2023-11-24 21:44:02,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:02,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:44:02,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:44:02,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:44:02,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:44:02,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 140 [2023-11-24 21:44:02,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 169 transitions, 536 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:02,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:02,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 140 [2023-11-24 21:44:02,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:03,434 INFO L124 PetriNetUnfolderBase]: 2191/5115 cut-off events. [2023-11-24 21:44:03,435 INFO L125 PetriNetUnfolderBase]: For 73/81 co-relation queries the response was YES. [2023-11-24 21:44:03,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8226 conditions, 5115 events. 2191/5115 cut-off events. For 73/81 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 42570 event pairs, 1382 based on Foata normal form. 2/3856 useless extension candidates. Maximal degree in co-relation 8197. Up to 2941 conditions per place. [2023-11-24 21:44:03,490 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 82 selfloop transitions, 6 changer transitions 0/166 dead transitions. [2023-11-24 21:44:03,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 166 transitions, 706 flow [2023-11-24 21:44:03,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:03,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:03,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-11-24 21:44:03,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2023-11-24 21:44:03,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-11-24 21:44:03,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-11-24 21:44:03,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:03,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-11-24 21:44:03,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:03,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:03,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:03,496 INFO L175 Difference]: Start difference. First operand has 143 places, 169 transitions, 536 flow. Second operand 3 states and 308 transitions. [2023-11-24 21:44:03,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 166 transitions, 706 flow [2023-11-24 21:44:03,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 166 transitions, 697 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:44:03,504 INFO L231 Difference]: Finished difference. Result has 140 places, 166 transitions, 533 flow [2023-11-24 21:44:03,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=533, PETRI_PLACES=140, PETRI_TRANSITIONS=166} [2023-11-24 21:44:03,507 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 6 predicate places. [2023-11-24 21:44:03,507 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 166 transitions, 533 flow [2023-11-24 21:44:03,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:03,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:03,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:03,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-24 21:44:03,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:44:03,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-24 21:44:03,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:03,712 INFO L85 PathProgramCache]: Analyzing trace with hash 92636715, now seen corresponding path program 1 times [2023-11-24 21:44:03,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:44:03,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957820775] [2023-11-24 21:44:03,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:03,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:44:03,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:44:03,715 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:44:03,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-24 21:44:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:03,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 21:44:03,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:44:03,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:44:03,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:44:03,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:44:03,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:44:03,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957820775] [2023-11-24 21:44:03,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957820775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:03,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:03,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:44:03,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735325169] [2023-11-24 21:44:03,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:03,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:44:03,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:44:03,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:44:03,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:44:04,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 140 [2023-11-24 21:44:04,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 166 transitions, 533 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:04,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:04,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 140 [2023-11-24 21:44:04,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:05,840 INFO L124 PetriNetUnfolderBase]: 2192/5118 cut-off events. [2023-11-24 21:44:05,840 INFO L125 PetriNetUnfolderBase]: For 73/81 co-relation queries the response was YES. [2023-11-24 21:44:05,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8238 conditions, 5118 events. 2192/5118 cut-off events. For 73/81 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 42570 event pairs, 1382 based on Foata normal form. 0/3854 useless extension candidates. Maximal degree in co-relation 8209. Up to 2948 conditions per place. [2023-11-24 21:44:05,885 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 85 selfloop transitions, 9 changer transitions 0/169 dead transitions. [2023-11-24 21:44:05,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 169 transitions, 727 flow [2023-11-24 21:44:05,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:44:05,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:44:05,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 482 transitions. [2023-11-24 21:44:05,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6885714285714286 [2023-11-24 21:44:05,888 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 482 transitions. [2023-11-24 21:44:05,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 482 transitions. [2023-11-24 21:44:05,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:05,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 482 transitions. [2023-11-24 21:44:05,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:05,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:05,894 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:05,895 INFO L175 Difference]: Start difference. First operand has 140 places, 166 transitions, 533 flow. Second operand 5 states and 482 transitions. [2023-11-24 21:44:05,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 169 transitions, 727 flow [2023-11-24 21:44:05,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 169 transitions, 715 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:44:05,900 INFO L231 Difference]: Finished difference. Result has 144 places, 169 transitions, 559 flow [2023-11-24 21:44:05,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=559, PETRI_PLACES=144, PETRI_TRANSITIONS=169} [2023-11-24 21:44:05,903 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 10 predicate places. [2023-11-24 21:44:05,903 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 169 transitions, 559 flow [2023-11-24 21:44:05,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:05,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:05,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:05,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-24 21:44:06,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:44:06,107 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-24 21:44:06,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:06,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1423229048, now seen corresponding path program 1 times [2023-11-24 21:44:06,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:44:06,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537486993] [2023-11-24 21:44:06,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:06,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:44:06,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:44:06,109 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:44:06,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-24 21:44:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:06,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 21:44:06,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:44:06,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:06,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:44:06,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:06,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:44:06,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537486993] [2023-11-24 21:44:06,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537486993] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:44:06,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:44:06,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-24 21:44:06,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693541340] [2023-11-24 21:44:06,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:44:06,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:44:06,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:44:06,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:44:06,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:44:07,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 140 [2023-11-24 21:44:07,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 169 transitions, 559 flow. Second operand has 10 states, 10 states have (on average 89.6) internal successors, (896), 10 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:07,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:07,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 140 [2023-11-24 21:44:07,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:09,801 INFO L124 PetriNetUnfolderBase]: 4374/10210 cut-off events. [2023-11-24 21:44:09,801 INFO L125 PetriNetUnfolderBase]: For 138/155 co-relation queries the response was YES. [2023-11-24 21:44:09,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16393 conditions, 10210 events. 4374/10210 cut-off events. For 138/155 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 96362 event pairs, 2771 based on Foata normal form. 2/7768 useless extension candidates. Maximal degree in co-relation 16343. Up to 2934 conditions per place. [2023-11-24 21:44:09,901 INFO L140 encePairwiseOnDemand]: 129/140 looper letters, 133 selfloop transitions, 32 changer transitions 0/243 dead transitions. [2023-11-24 21:44:09,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 243 transitions, 1166 flow [2023-11-24 21:44:09,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:44:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:44:09,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 898 transitions. [2023-11-24 21:44:09,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7126984126984127 [2023-11-24 21:44:09,908 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 898 transitions. [2023-11-24 21:44:09,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 898 transitions. [2023-11-24 21:44:09,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:09,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 898 transitions. [2023-11-24 21:44:09,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.77777777777777) internal successors, (898), 9 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:09,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 140.0) internal successors, (1400), 10 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:09,920 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 140.0) internal successors, (1400), 10 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:09,920 INFO L175 Difference]: Start difference. First operand has 144 places, 169 transitions, 559 flow. Second operand 9 states and 898 transitions. [2023-11-24 21:44:09,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 243 transitions, 1166 flow [2023-11-24 21:44:09,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 243 transitions, 1152 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:44:09,929 INFO L231 Difference]: Finished difference. Result has 150 places, 182 transitions, 670 flow [2023-11-24 21:44:09,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=670, PETRI_PLACES=150, PETRI_TRANSITIONS=182} [2023-11-24 21:44:09,930 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 16 predicate places. [2023-11-24 21:44:09,930 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 182 transitions, 670 flow [2023-11-24 21:44:09,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 89.6) internal successors, (896), 10 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:09,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:09,931 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:09,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-24 21:44:10,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:44:10,135 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-24 21:44:10,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:10,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1423250244, now seen corresponding path program 1 times [2023-11-24 21:44:10,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:44:10,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343788090] [2023-11-24 21:44:10,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:10,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:44:10,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:44:10,138 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:44:10,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-24 21:44:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:10,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-24 21:44:10,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:44:10,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:44:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:44:10,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:44:11,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:44:11,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:44:11,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343788090] [2023-11-24 21:44:11,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343788090] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:44:11,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:44:11,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-24 21:44:11,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538494880] [2023-11-24 21:44:11,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:44:11,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 21:44:11,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:44:11,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 21:44:11,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:44:15,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 140 [2023-11-24 21:44:15,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 182 transitions, 670 flow. Second operand has 11 states, 11 states have (on average 86.81818181818181) internal successors, (955), 11 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:15,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:15,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 140 [2023-11-24 21:44:15,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:17,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 21:44:19,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 21:44:21,426 INFO L124 PetriNetUnfolderBase]: 4389/10254 cut-off events. [2023-11-24 21:44:21,426 INFO L125 PetriNetUnfolderBase]: For 151/167 co-relation queries the response was YES. [2023-11-24 21:44:21,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16566 conditions, 10254 events. 4389/10254 cut-off events. For 151/167 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 96527 event pairs, 2764 based on Foata normal form. 12/7751 useless extension candidates. Maximal degree in co-relation 16486. Up to 5893 conditions per place. [2023-11-24 21:44:21,665 INFO L140 encePairwiseOnDemand]: 126/140 looper letters, 88 selfloop transitions, 49 changer transitions 0/212 dead transitions. [2023-11-24 21:44:21,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 212 transitions, 1098 flow [2023-11-24 21:44:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:44:21,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-24 21:44:21,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1017 transitions. [2023-11-24 21:44:21,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6603896103896104 [2023-11-24 21:44:21,671 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1017 transitions. [2023-11-24 21:44:21,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1017 transitions. [2023-11-24 21:44:21,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:21,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1017 transitions. [2023-11-24 21:44:21,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 92.45454545454545) internal successors, (1017), 11 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:21,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 140.0) internal successors, (1680), 12 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:21,680 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 140.0) internal successors, (1680), 12 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:21,681 INFO L175 Difference]: Start difference. First operand has 150 places, 182 transitions, 670 flow. Second operand 11 states and 1017 transitions. [2023-11-24 21:44:21,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 212 transitions, 1098 flow [2023-11-24 21:44:21,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 212 transitions, 1097 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:44:21,689 INFO L231 Difference]: Finished difference. Result has 163 places, 212 transitions, 1004 flow [2023-11-24 21:44:21,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1004, PETRI_PLACES=163, PETRI_TRANSITIONS=212} [2023-11-24 21:44:21,690 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 29 predicate places. [2023-11-24 21:44:21,690 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 212 transitions, 1004 flow [2023-11-24 21:44:21,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 86.81818181818181) internal successors, (955), 11 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:21,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:21,691 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2023-11-24 21:44:21,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-24 21:44:21,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:44:21,894 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 98 more)] === [2023-11-24 21:44:21,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:21,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1346433134, now seen corresponding path program 2 times [2023-11-24 21:44:21,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:44:21,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705995934] [2023-11-24 21:44:21,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:44:21,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:44:21,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:44:21,896 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:44:21,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c732d887-e3ef-40b6-bedd-968b7010a173/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-24 21:44:22,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:44:22,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:44:22,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 21:44:22,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:44:22,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-24 21:44:22,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:22,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:22,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:22,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:22,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:22,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:22,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:22,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:22,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:22,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:22,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:22,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:22,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:22,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:22,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:44:22,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:22,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:22,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:22,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:22,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:44:22,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:22,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-24 21:44:22,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:44:22,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:44:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:22,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:44:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:23,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:44:23,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705995934] [2023-11-24 21:44:23,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705995934] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:44:23,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:44:23,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-24 21:44:23,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351725136] [2023-11-24 21:44:23,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:44:23,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 21:44:23,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:44:23,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 21:44:23,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182