./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i --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_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme --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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:04:09,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:04:09,506 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 12:04:09,518 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:04:09,521 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:04:09,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:04:09,563 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:04:09,563 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:04:09,565 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:04:09,570 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:04:09,570 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:04:09,571 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:04:09,571 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:04:09,573 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:04:09,574 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:04:09,574 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:04:09,575 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:04:09,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:04:09,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:04:09,576 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:04:09,576 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:04:09,577 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:04:09,577 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:04:09,578 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:04:09,578 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:04:09,579 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:04:09,579 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:04:09,579 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:04:09,580 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:04:09,581 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:04:09,582 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:04:09,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:04:09,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:04:09,583 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:04:09,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:04:09,584 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:04:09,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:04:09,584 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:04:09,584 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:04:09,585 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:04:09,585 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:04:09,586 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_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2023-11-26 12:04:09,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:04:09,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:04:09,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:04:09,872 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:04:09,873 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:04:09,874 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2023-11-26 12:04:13,306 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:04:13,723 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:04:13,728 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2023-11-26 12:04:13,761 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/data/758bcc824/e03519bebd0a49f6bc4b9392c81ccb34/FLAG09130249a [2023-11-26 12:04:13,781 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/data/758bcc824/e03519bebd0a49f6bc4b9392c81ccb34 [2023-11-26 12:04:13,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:04:13,787 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:04:13,789 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:04:13,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:04:13,796 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:04:13,797 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:04:13" (1/1) ... [2023-11-26 12:04:13,799 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ab10cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:13, skipping insertion in model container [2023-11-26 12:04:13,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:04:13" (1/1) ... [2023-11-26 12:04:13,871 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:04:14,730 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:04:14,731 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:04:14,732 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:04:14,733 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:04:14,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:04:14,823 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) [2023-11-26 12:04:14,823 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7a9bc482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:14, skipping insertion in model container [2023-11-26 12:04:14,824 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:04:14,824 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-26 12:04:14,827 INFO L158 Benchmark]: Toolchain (without parser) took 1038.70ms. Allocated memory is still 178.3MB. Free memory was 129.3MB in the beginning and 113.6MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-26 12:04:14,828 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 132.1MB. Free memory was 81.2MB in the beginning and 81.0MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:04:14,829 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1035.31ms. Allocated memory is still 178.3MB. Free memory was 128.9MB in the beginning and 113.6MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-26 12:04:14,831 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 132.1MB. Free memory was 81.2MB in the beginning and 81.0MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1035.31ms. Allocated memory is still 178.3MB. Free memory was 128.9MB in the beginning and 113.6MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1038]: 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_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme --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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:04:17,920 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:04:18,087 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-26 12:04:18,098 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:04:18,098 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:04:18,155 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:04:18,156 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:04:18,157 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:04:18,158 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:04:18,164 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:04:18,165 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:04:18,165 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:04:18,166 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:04:18,168 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:04:18,169 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:04:18,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:04:18,170 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:04:18,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:04:18,171 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:04:18,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:04:18,172 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:04:18,173 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:04:18,173 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:04:18,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:04:18,174 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:04:18,175 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 12:04:18,175 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 12:04:18,176 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:04:18,176 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:04:18,177 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:04:18,179 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:04:18,179 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:04:18,180 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:04:18,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:04:18,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:04:18,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:04:18,182 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:04:18,182 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 12:04:18,182 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 12:04:18,183 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:04:18,183 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:04:18,183 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:04:18,184 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:04:18,184 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 12:04:18,185 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_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2023-11-26 12:04:18,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:04:18,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:04:18,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:04:18,717 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:04:18,718 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:04:18,720 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2023-11-26 12:04:22,452 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:04:22,917 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:04:22,922 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2023-11-26 12:04:22,953 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/data/556d632fc/61d86f1e6ed64990a991677a8c3a4bf6/FLAG5520c4551 [2023-11-26 12:04:22,976 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/data/556d632fc/61d86f1e6ed64990a991677a8c3a4bf6 [2023-11-26 12:04:22,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:04:22,984 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:04:22,989 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:04:22,989 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:04:22,995 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:04:22,999 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:04:22" (1/1) ... [2023-11-26 12:04:23,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0b37e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:23, skipping insertion in model container [2023-11-26 12:04:23,001 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:04:22" (1/1) ... [2023-11-26 12:04:23,093 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:04:23,707 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:04:23,709 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:04:23,711 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:04:23,716 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:04:23,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:04:23,812 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-26 12:04:23,846 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:04:23,933 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:04:23,933 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:04:23,934 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:04:23,935 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:04:23,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:04:23,960 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:04:24,008 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:04:24,008 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:04:24,009 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:04:24,010 WARN L1590 CHandler]: Possible shadowing of function new [2023-11-26 12:04:24,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:04:24,112 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:04:24,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:24 WrapperNode [2023-11-26 12:04:24,113 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:04:24,115 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:04:24,115 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:04:24,115 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:04:24,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:24" (1/1) ... [2023-11-26 12:04:24,166 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:24" (1/1) ... [2023-11-26 12:04:24,233 INFO L138 Inliner]: procedures = 276, calls = 36, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 132 [2023-11-26 12:04:24,233 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:04:24,234 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:04:24,234 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:04:24,235 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:04:24,255 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:24" (1/1) ... [2023-11-26 12:04:24,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:24" (1/1) ... [2023-11-26 12:04:24,273 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:24" (1/1) ... [2023-11-26 12:04:24,324 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [1, 16, 1]. 89 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0, 0]. The 14 writes are split as follows [1, 12, 1]. [2023-11-26 12:04:24,324 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:24" (1/1) ... [2023-11-26 12:04:24,324 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:24" (1/1) ... [2023-11-26 12:04:24,373 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:24" (1/1) ... [2023-11-26 12:04:24,387 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:24" (1/1) ... [2023-11-26 12:04:24,405 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:24" (1/1) ... [2023-11-26 12:04:24,409 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:24" (1/1) ... [2023-11-26 12:04:24,417 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:04:24,424 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:04:24,425 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:04:24,425 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:04:24,426 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:24" (1/1) ... [2023-11-26 12:04:24,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:04:24,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:24,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:04:24,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:04:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-26 12:04:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-26 12:04:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-26 12:04:24,504 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-26 12:04:24,505 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-26 12:04:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:04:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 12:04:24,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 12:04:24,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 12:04:24,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:04:24,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 12:04:24,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-26 12:04:24,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-26 12:04:24,507 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 12:04:24,507 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 12:04:24,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:04:24,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:04:24,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 12:04:24,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 12:04:24,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 12:04:24,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:04:24,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:04:24,511 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:04:24,792 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:04:24,795 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:04:25,774 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:04:26,172 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:04:26,172 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-26 12:04:26,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:04:26 BoogieIcfgContainer [2023-11-26 12:04:26,173 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:04:26,176 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:04:26,176 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:04:26,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:04:26,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:04:22" (1/3) ... [2023-11-26 12:04:26,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b04db3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:04:26, skipping insertion in model container [2023-11-26 12:04:26,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:24" (2/3) ... [2023-11-26 12:04:26,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b04db3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:04:26, skipping insertion in model container [2023-11-26 12:04:26,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:04:26" (3/3) ... [2023-11-26 12:04:26,187 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2023-11-26 12:04:26,206 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:04:26,206 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2023-11-26 12:04:26,206 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:04:26,323 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 12:04:26,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 91 transitions, 190 flow [2023-11-26 12:04:26,489 INFO L124 PetriNetUnfolderBase]: 6/89 cut-off events. [2023-11-26 12:04:26,489 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:04:26,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 89 events. 6/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 330 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-11-26 12:04:26,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 91 transitions, 190 flow [2023-11-26 12:04:26,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 89 transitions, 184 flow [2023-11-26 12:04:26,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:04:26,540 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;@5a778192, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:04:26,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2023-11-26 12:04:26,544 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:04:26,545 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-11-26 12:04:26,545 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:04:26,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:26,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 12:04:26,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-26 12:04:26,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:26,553 INFO L85 PathProgramCache]: Analyzing trace with hash 415195, now seen corresponding path program 1 times [2023-11-26 12:04:26,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:26,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333147314] [2023-11-26 12:04:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:26,573 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 [2023-11-26 12:04:26,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:26,580 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:04:26,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:04:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:26,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 12:04:26,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:26,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:04:26,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:04:26,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-11-26 12:04:26,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:04:26,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-26 12:04:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:27,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:27,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:27,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333147314] [2023-11-26 12:04:27,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333147314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:27,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:27,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:04:27,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772796103] [2023-11-26 12:04:27,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:27,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:04:27,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:27,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:04:27,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:27,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 91 [2023-11-26 12:04:27,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:27,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:27,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 91 [2023-11-26 12:04:27,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:28,222 INFO L124 PetriNetUnfolderBase]: 543/1066 cut-off events. [2023-11-26 12:04:28,223 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-26 12:04:28,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1942 conditions, 1066 events. 543/1066 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6055 event pairs, 101 based on Foata normal form. 1/968 useless extension candidates. Maximal degree in co-relation 1886. Up to 622 conditions per place. [2023-11-26 12:04:28,242 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 55 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2023-11-26 12:04:28,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 107 transitions, 338 flow [2023-11-26 12:04:28,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:04:28,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:04:28,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 263 transitions. [2023-11-26 12:04:28,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7225274725274725 [2023-11-26 12:04:28,263 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 263 transitions. [2023-11-26 12:04:28,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 263 transitions. [2023-11-26 12:04:28,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:28,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 263 transitions. [2023-11-26 12:04:28,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 65.75) internal successors, (263), 4 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) [2023-11-26 12:04:28,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:28,282 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:28,284 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 184 flow. Second operand 4 states and 263 transitions. [2023-11-26 12:04:28,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 107 transitions, 338 flow [2023-11-26 12:04:28,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 107 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:04:28,296 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 194 flow [2023-11-26 12:04:28,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=90, PETRI_TRANSITIONS=87} [2023-11-26 12:04:28,303 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 0 predicate places. [2023-11-26 12:04:28,304 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 194 flow [2023-11-26 12:04:28,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:28,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:28,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 12:04:28,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:04:28,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:28,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-26 12:04:28,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:28,509 INFO L85 PathProgramCache]: Analyzing trace with hash 415196, now seen corresponding path program 1 times [2023-11-26 12:04:28,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:28,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738650191] [2023-11-26 12:04:28,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:28,511 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 [2023-11-26 12:04:28,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:28,513 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:04:28,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:04:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:28,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 12:04:28,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:28,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:04:28,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-26 12:04:28,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:04:28,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:04:28,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2023-11-26 12:04:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:28,801 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:28,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:28,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738650191] [2023-11-26 12:04:28,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738650191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:28,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:28,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:04:28,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307196575] [2023-11-26 12:04:28,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:28,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:04:28,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:28,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:04:28,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:29,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 91 [2023-11-26 12:04:29,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:29,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:29,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 91 [2023-11-26 12:04:29,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:29,951 INFO L124 PetriNetUnfolderBase]: 484/994 cut-off events. [2023-11-26 12:04:29,952 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2023-11-26 12:04:29,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1959 conditions, 994 events. 484/994 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5377 event pairs, 369 based on Foata normal form. 3/889 useless extension candidates. Maximal degree in co-relation 1885. Up to 757 conditions per place. [2023-11-26 12:04:29,969 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 38 selfloop transitions, 5 changer transitions 0/91 dead transitions. [2023-11-26 12:04:29,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 91 transitions, 294 flow [2023-11-26 12:04:29,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:04:29,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:04:29,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 254 transitions. [2023-11-26 12:04:29,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6978021978021978 [2023-11-26 12:04:29,974 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 254 transitions. [2023-11-26 12:04:29,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 254 transitions. [2023-11-26 12:04:29,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:29,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 254 transitions. [2023-11-26 12:04:29,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:29,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:29,980 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:29,980 INFO L175 Difference]: Start difference. First operand has 90 places, 87 transitions, 194 flow. Second operand 4 states and 254 transitions. [2023-11-26 12:04:29,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 91 transitions, 294 flow [2023-11-26 12:04:29,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 282 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:04:29,986 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 227 flow [2023-11-26 12:04:29,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2023-11-26 12:04:29,988 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 2 predicate places. [2023-11-26 12:04:29,988 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 227 flow [2023-11-26 12:04:29,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:29,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:29,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 12:04:29,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-26 12:04:30,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:30,192 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-26 12:04:30,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:30,193 INFO L85 PathProgramCache]: Analyzing trace with hash -515465405, now seen corresponding path program 1 times [2023-11-26 12:04:30,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:30,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291552669] [2023-11-26 12:04:30,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:30,195 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 [2023-11-26 12:04:30,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:30,196 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:04:30,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:04:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:30,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:04:30,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:30,394 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 [2023-11-26 12:04:30,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:30,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:30,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:30,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291552669] [2023-11-26 12:04:30,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291552669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:30,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:30,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:04:30,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308519612] [2023-11-26 12:04:30,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:30,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:30,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:30,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:30,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:30,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 91 [2023-11-26 12:04:30,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:30,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:30,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 91 [2023-11-26 12:04:30,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:31,105 INFO L124 PetriNetUnfolderBase]: 484/993 cut-off events. [2023-11-26 12:04:31,106 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-26 12:04:31,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1886 conditions, 993 events. 484/993 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5381 event pairs, 369 based on Foata normal form. 0/884 useless extension candidates. Maximal degree in co-relation 1854. Up to 753 conditions per place. [2023-11-26 12:04:31,116 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 36 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2023-11-26 12:04:31,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 90 transitions, 303 flow [2023-11-26 12:04:31,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:31,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:04:31,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2023-11-26 12:04:31,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7362637362637363 [2023-11-26 12:04:31,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 201 transitions. [2023-11-26 12:04:31,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 201 transitions. [2023-11-26 12:04:31,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:31,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 201 transitions. [2023-11-26 12:04:31,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:31,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:31,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:31,124 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 227 flow. Second operand 3 states and 201 transitions. [2023-11-26 12:04:31,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 90 transitions, 303 flow [2023-11-26 12:04:31,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 90 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:04:31,129 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 228 flow [2023-11-26 12:04:31,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2023-11-26 12:04:31,131 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 2 predicate places. [2023-11-26 12:04:31,131 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 228 flow [2023-11-26 12:04:31,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:31,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:31,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 12:04:31,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:04:31,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:31,337 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-26 12:04:31,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:31,338 INFO L85 PathProgramCache]: Analyzing trace with hash -515465406, now seen corresponding path program 1 times [2023-11-26 12:04:31,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:31,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135801869] [2023-11-26 12:04:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:31,340 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 [2023-11-26 12:04:31,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:31,353 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:04:31,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:04:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:31,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:04:31,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:31,588 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 [2023-11-26 12:04:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:31,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:31,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:31,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135801869] [2023-11-26 12:04:31,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135801869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:31,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:31,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:04:31,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731472892] [2023-11-26 12:04:31,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:31,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:31,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:31,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:31,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:31,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 91 [2023-11-26 12:04:31,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:31,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:31,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 91 [2023-11-26 12:04:31,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:32,247 INFO L124 PetriNetUnfolderBase]: 484/992 cut-off events. [2023-11-26 12:04:32,247 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-26 12:04:32,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1886 conditions, 992 events. 484/992 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5403 event pairs, 369 based on Foata normal form. 0/885 useless extension candidates. Maximal degree in co-relation 1853. Up to 753 conditions per place. [2023-11-26 12:04:32,261 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 36 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2023-11-26 12:04:32,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 304 flow [2023-11-26 12:04:32,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:32,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:04:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2023-11-26 12:04:32,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7362637362637363 [2023-11-26 12:04:32,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 201 transitions. [2023-11-26 12:04:32,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 201 transitions. [2023-11-26 12:04:32,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:32,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 201 transitions. [2023-11-26 12:04:32,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:32,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:32,269 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:32,269 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 228 flow. Second operand 3 states and 201 transitions. [2023-11-26 12:04:32,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 304 flow [2023-11-26 12:04:32,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 89 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:04:32,274 INFO L231 Difference]: Finished difference. Result has 91 places, 89 transitions, 226 flow [2023-11-26 12:04:32,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=91, PETRI_TRANSITIONS=89} [2023-11-26 12:04:32,276 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 1 predicate places. [2023-11-26 12:04:32,276 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 89 transitions, 226 flow [2023-11-26 12:04:32,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:32,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:32,277 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-26 12:04:32,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:04:32,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:32,483 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-26 12:04:32,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:32,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1200443502, now seen corresponding path program 1 times [2023-11-26 12:04:32,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:32,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657810966] [2023-11-26 12:04:32,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:32,484 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 [2023-11-26 12:04:32,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:32,486 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:04:32,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:04:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:32,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 12:04:32,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:32,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:32,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:32,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657810966] [2023-11-26 12:04:32,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657810966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:32,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:32,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:32,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739537552] [2023-11-26 12:04:32,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:32,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:32,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:32,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:32,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:32,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 91 [2023-11-26 12:04:32,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 89 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:32,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:32,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 91 [2023-11-26 12:04:32,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:33,109 INFO L124 PetriNetUnfolderBase]: 483/1014 cut-off events. [2023-11-26 12:04:33,110 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-26 12:04:33,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1914 conditions, 1014 events. 483/1014 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5421 event pairs, 369 based on Foata normal form. 2/898 useless extension candidates. Maximal degree in co-relation 1884. Up to 753 conditions per place. [2023-11-26 12:04:33,122 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 40 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2023-11-26 12:04:33,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 93 transitions, 324 flow [2023-11-26 12:04:33,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:33,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:04:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2023-11-26 12:04:33,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7655677655677655 [2023-11-26 12:04:33,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 209 transitions. [2023-11-26 12:04:33,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 209 transitions. [2023-11-26 12:04:33,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:33,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 209 transitions. [2023-11-26 12:04:33,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:33,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:33,129 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:33,129 INFO L175 Difference]: Start difference. First operand has 91 places, 89 transitions, 226 flow. Second operand 3 states and 209 transitions. [2023-11-26 12:04:33,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 93 transitions, 324 flow [2023-11-26 12:04:33,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:04:33,134 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 231 flow [2023-11-26 12:04:33,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2023-11-26 12:04:33,136 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 2 predicate places. [2023-11-26 12:04:33,136 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 231 flow [2023-11-26 12:04:33,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:33,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:33,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:33,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:33,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:33,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-26 12:04:33,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:33,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1200442016, now seen corresponding path program 1 times [2023-11-26 12:04:33,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:33,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073890858] [2023-11-26 12:04:33,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:33,343 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 [2023-11-26 12:04:33,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:33,345 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:04:33,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:04:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:33,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:04:33,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:33,536 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 [2023-11-26 12:04:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:33,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:33,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:33,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073890858] [2023-11-26 12:04:33,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073890858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:33,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:33,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:33,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652236402] [2023-11-26 12:04:33,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:33,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:04:33,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:33,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:04:33,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:34,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 91 [2023-11-26 12:04:34,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:34,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:34,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 91 [2023-11-26 12:04:34,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:34,659 INFO L124 PetriNetUnfolderBase]: 483/1010 cut-off events. [2023-11-26 12:04:34,659 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-26 12:04:34,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1914 conditions, 1010 events. 483/1010 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5392 event pairs, 369 based on Foata normal form. 2/898 useless extension candidates. Maximal degree in co-relation 1880. Up to 757 conditions per place. [2023-11-26 12:04:34,669 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 37 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2023-11-26 12:04:34,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 87 transitions, 309 flow [2023-11-26 12:04:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:04:34,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:04:34,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2023-11-26 12:04:34,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6675824175824175 [2023-11-26 12:04:34,672 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 243 transitions. [2023-11-26 12:04:34,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 243 transitions. [2023-11-26 12:04:34,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:34,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 243 transitions. [2023-11-26 12:04:34,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:34,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:34,676 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:34,676 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 231 flow. Second operand 4 states and 243 transitions. [2023-11-26 12:04:34,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 87 transitions, 309 flow [2023-11-26 12:04:34,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 87 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:04:34,680 INFO L231 Difference]: Finished difference. Result has 92 places, 87 transitions, 232 flow [2023-11-26 12:04:34,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2023-11-26 12:04:34,681 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 2 predicate places. [2023-11-26 12:04:34,682 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 232 flow [2023-11-26 12:04:34,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:34,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:34,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:34,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:04:34,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:34,886 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-26 12:04:34,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:34,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1200442015, now seen corresponding path program 1 times [2023-11-26 12:04:34,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:34,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740919622] [2023-11-26 12:04:34,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:34,887 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 [2023-11-26 12:04:34,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:34,889 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:04:34,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:04:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:35,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:04:35,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:35,027 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 [2023-11-26 12:04:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:35,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:35,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:35,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740919622] [2023-11-26 12:04:35,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740919622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:35,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:35,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:35,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163207338] [2023-11-26 12:04:35,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:35,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:04:35,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:35,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:04:35,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:35,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 91 [2023-11-26 12:04:35,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:35,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:35,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 91 [2023-11-26 12:04:35,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:35,883 INFO L124 PetriNetUnfolderBase]: 483/1006 cut-off events. [2023-11-26 12:04:35,883 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-26 12:04:35,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1918 conditions, 1006 events. 483/1006 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5394 event pairs, 369 based on Foata normal form. 2/896 useless extension candidates. Maximal degree in co-relation 1884. Up to 755 conditions per place. [2023-11-26 12:04:35,895 INFO L140 encePairwiseOnDemand]: 84/91 looper letters, 34 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2023-11-26 12:04:35,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 85 transitions, 310 flow [2023-11-26 12:04:35,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:04:35,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:04:35,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 284 transitions. [2023-11-26 12:04:35,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6241758241758242 [2023-11-26 12:04:35,899 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 284 transitions. [2023-11-26 12:04:35,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 284 transitions. [2023-11-26 12:04:35,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:35,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 284 transitions. [2023-11-26 12:04:35,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 56.8) internal successors, (284), 5 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:35,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:35,904 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 91.0) internal successors, (546), 6 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:35,904 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 232 flow. Second operand 5 states and 284 transitions. [2023-11-26 12:04:35,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 85 transitions, 310 flow [2023-11-26 12:04:35,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 85 transitions, 302 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:04:35,909 INFO L231 Difference]: Finished difference. Result has 91 places, 85 transitions, 234 flow [2023-11-26 12:04:35,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=234, PETRI_PLACES=91, PETRI_TRANSITIONS=85} [2023-11-26 12:04:35,910 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 1 predicate places. [2023-11-26 12:04:35,911 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 85 transitions, 234 flow [2023-11-26 12:04:35,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:35,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:35,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:35,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:04:36,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:36,116 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-26 12:04:36,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:36,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1721415487, now seen corresponding path program 1 times [2023-11-26 12:04:36,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:36,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683919150] [2023-11-26 12:04:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:36,118 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 [2023-11-26 12:04:36,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:36,144 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:04:36,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:04:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:36,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 12:04:36,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:36,447 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 1 [2023-11-26 12:04:36,542 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-26 12:04:36,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-26 12:04:36,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:36,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:36,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:36,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683919150] [2023-11-26 12:04:36,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683919150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:36,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:36,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:04:36,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185359865] [2023-11-26 12:04:36,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:36,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:04:36,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:36,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:04:36,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:04:37,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 91 [2023-11-26 12:04:37,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 85 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 50.285714285714285) internal successors, (352), 7 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:37,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:37,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 91 [2023-11-26 12:04:37,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:38,226 INFO L124 PetriNetUnfolderBase]: 839/1787 cut-off events. [2023-11-26 12:04:38,227 INFO L125 PetriNetUnfolderBase]: For 77/86 co-relation queries the response was YES. [2023-11-26 12:04:38,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3317 conditions, 1787 events. 839/1787 cut-off events. For 77/86 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11897 event pairs, 230 based on Foata normal form. 49/1694 useless extension candidates. Maximal degree in co-relation 3280. Up to 754 conditions per place. [2023-11-26 12:04:38,243 INFO L140 encePairwiseOnDemand]: 78/91 looper letters, 51 selfloop transitions, 13 changer transitions 0/104 dead transitions. [2023-11-26 12:04:38,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 104 transitions, 400 flow [2023-11-26 12:04:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:04:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 12:04:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 407 transitions. [2023-11-26 12:04:38,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6389324960753532 [2023-11-26 12:04:38,247 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 407 transitions. [2023-11-26 12:04:38,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 407 transitions. [2023-11-26 12:04:38,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:38,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 407 transitions. [2023-11-26 12:04:38,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:38,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:38,252 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:38,253 INFO L175 Difference]: Start difference. First operand has 91 places, 85 transitions, 234 flow. Second operand 7 states and 407 transitions. [2023-11-26 12:04:38,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 104 transitions, 400 flow [2023-11-26 12:04:38,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 104 transitions, 386 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 12:04:38,257 INFO L231 Difference]: Finished difference. Result has 93 places, 85 transitions, 269 flow [2023-11-26 12:04:38,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=93, PETRI_TRANSITIONS=85} [2023-11-26 12:04:38,258 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 3 predicate places. [2023-11-26 12:04:38,258 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 85 transitions, 269 flow [2023-11-26 12:04:38,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 50.285714285714285) internal successors, (352), 7 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:38,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:38,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:38,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:04:38,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:38,464 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-26 12:04:38,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:38,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1721415486, now seen corresponding path program 1 times [2023-11-26 12:04:38,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:38,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050587734] [2023-11-26 12:04:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:38,466 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 [2023-11-26 12:04:38,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:38,467 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:04:38,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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 [2023-11-26 12:04:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:38,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 12:04:38,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:38,946 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-26 12:04:38,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-26 12:04:38,981 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-26 12:04:38,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-26 12:04:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:39,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:39,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:39,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050587734] [2023-11-26 12:04:39,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050587734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:39,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:39,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:04:39,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527845254] [2023-11-26 12:04:39,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:39,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 12:04:39,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:39,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 12:04:39,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:04:40,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 91 [2023-11-26 12:04:40,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 85 transitions, 269 flow. Second operand has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:40,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:40,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 91 [2023-11-26 12:04:40,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:41,724 INFO L124 PetriNetUnfolderBase]: 840/1864 cut-off events. [2023-11-26 12:04:41,725 INFO L125 PetriNetUnfolderBase]: For 527/552 co-relation queries the response was YES. [2023-11-26 12:04:41,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3771 conditions, 1864 events. 840/1864 cut-off events. For 527/552 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12681 event pairs, 606 based on Foata normal form. 2/1656 useless extension candidates. Maximal degree in co-relation 3668. Up to 1351 conditions per place. [2023-11-26 12:04:41,791 INFO L140 encePairwiseOnDemand]: 82/91 looper letters, 47 selfloop transitions, 9 changer transitions 0/94 dead transitions. [2023-11-26 12:04:41,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 94 transitions, 420 flow [2023-11-26 12:04:41,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:04:41,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:04:41,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 323 transitions. [2023-11-26 12:04:41,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5915750915750916 [2023-11-26 12:04:41,795 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 323 transitions. [2023-11-26 12:04:41,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 323 transitions. [2023-11-26 12:04:41,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:41,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 323 transitions. [2023-11-26 12:04:41,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:41,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:41,800 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:41,800 INFO L175 Difference]: Start difference. First operand has 93 places, 85 transitions, 269 flow. Second operand 6 states and 323 transitions. [2023-11-26 12:04:41,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 94 transitions, 420 flow [2023-11-26 12:04:41,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 94 transitions, 389 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 12:04:41,805 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 315 flow [2023-11-26 12:04:41,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=315, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2023-11-26 12:04:41,807 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 6 predicate places. [2023-11-26 12:04:41,807 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 315 flow [2023-11-26 12:04:41,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:41,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:41,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:41,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:42,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:42,014 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-26 12:04:42,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:42,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1824272065, now seen corresponding path program 1 times [2023-11-26 12:04:42,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:42,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237459309] [2023-11-26 12:04:42,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:42,015 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 [2023-11-26 12:04:42,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:42,016 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:04:42,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-26 12:04:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:42,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-26 12:04:42,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:42,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 12:04:42,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 15 [2023-11-26 12:04:42,508 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-26 12:04:42,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-26 12:04:42,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-26 12:04:42,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-26 12:04:42,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-26 12:04:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:42,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:42,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:42,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237459309] [2023-11-26 12:04:42,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237459309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:42,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:42,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:04:42,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038796860] [2023-11-26 12:04:42,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:42,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:04:42,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:42,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:04:42,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:04:44,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 91 [2023-11-26 12:04:44,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 315 flow. Second operand has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:44,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:44,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 91 [2023-11-26 12:04:44,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:46,034 INFO L124 PetriNetUnfolderBase]: 840/1862 cut-off events. [2023-11-26 12:04:46,035 INFO L125 PetriNetUnfolderBase]: For 375/400 co-relation queries the response was YES. [2023-11-26 12:04:46,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3754 conditions, 1862 events. 840/1862 cut-off events. For 375/400 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12718 event pairs, 606 based on Foata normal form. 0/1667 useless extension candidates. Maximal degree in co-relation 3650. Up to 1354 conditions per place. [2023-11-26 12:04:46,055 INFO L140 encePairwiseOnDemand]: 80/91 looper letters, 48 selfloop transitions, 15 changer transitions 0/99 dead transitions. [2023-11-26 12:04:46,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 99 transitions, 470 flow [2023-11-26 12:04:46,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 12:04:46,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-26 12:04:46,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 526 transitions. [2023-11-26 12:04:46,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254745254745254 [2023-11-26 12:04:46,061 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 526 transitions. [2023-11-26 12:04:46,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 526 transitions. [2023-11-26 12:04:46,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:46,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 526 transitions. [2023-11-26 12:04:46,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.81818181818182) internal successors, (526), 11 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:46,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:46,069 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:46,069 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 315 flow. Second operand 11 states and 526 transitions. [2023-11-26 12:04:46,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 99 transitions, 470 flow [2023-11-26 12:04:46,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 99 transitions, 466 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:04:46,075 INFO L231 Difference]: Finished difference. Result has 109 places, 96 transitions, 393 flow [2023-11-26 12:04:46,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=393, PETRI_PLACES=109, PETRI_TRANSITIONS=96} [2023-11-26 12:04:46,077 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 19 predicate places. [2023-11-26 12:04:46,078 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 96 transitions, 393 flow [2023-11-26 12:04:46,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:46,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:46,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:46,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:46,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:46,284 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-26 12:04:46,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:46,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1824272064, now seen corresponding path program 1 times [2023-11-26 12:04:46,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:46,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151483948] [2023-11-26 12:04:46,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:46,285 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 [2023-11-26 12:04:46,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:46,286 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:04:46,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-26 12:04:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:46,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-26 12:04:46,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:46,582 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 1 [2023-11-26 12:04:46,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 12:04:46,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 12:04:46,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-26 12:04:46,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-26 12:04:46,923 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-26 12:04:46,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-26 12:04:46,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-26 12:04:47,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-26 12:04:47,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-26 12:04:47,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-26 12:04:47,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-26 12:04:47,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-26 12:04:47,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-26 12:04:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:47,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:47,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:47,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151483948] [2023-11-26 12:04:47,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151483948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:47,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:47,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:04:47,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827990008] [2023-11-26 12:04:47,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:47,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:04:47,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:47,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:04:47,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:04:50,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 91 [2023-11-26 12:04:50,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 96 transitions, 393 flow. Second operand has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:50,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:50,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 91 [2023-11-26 12:04:50,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:52,084 INFO L124 PetriNetUnfolderBase]: 840/1861 cut-off events. [2023-11-26 12:04:52,084 INFO L125 PetriNetUnfolderBase]: For 402/427 co-relation queries the response was YES. [2023-11-26 12:04:52,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3801 conditions, 1861 events. 840/1861 cut-off events. For 402/427 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12709 event pairs, 606 based on Foata normal form. 1/1670 useless extension candidates. Maximal degree in co-relation 3657. Up to 1359 conditions per place. [2023-11-26 12:04:52,103 INFO L140 encePairwiseOnDemand]: 80/91 looper letters, 66 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2023-11-26 12:04:52,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 110 transitions, 592 flow [2023-11-26 12:04:52,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:04:52,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:04:52,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 479 transitions. [2023-11-26 12:04:52,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263736263736264 [2023-11-26 12:04:52,108 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 479 transitions. [2023-11-26 12:04:52,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 479 transitions. [2023-11-26 12:04:52,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:52,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 479 transitions. [2023-11-26 12:04:52,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 47.9) internal successors, (479), 10 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:52,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:52,114 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:52,114 INFO L175 Difference]: Start difference. First operand has 109 places, 96 transitions, 393 flow. Second operand 10 states and 479 transitions. [2023-11-26 12:04:52,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 110 transitions, 592 flow [2023-11-26 12:04:52,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 110 transitions, 574 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 12:04:52,121 INFO L231 Difference]: Finished difference. Result has 117 places, 99 transitions, 427 flow [2023-11-26 12:04:52,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=427, PETRI_PLACES=117, PETRI_TRANSITIONS=99} [2023-11-26 12:04:52,122 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 27 predicate places. [2023-11-26 12:04:52,122 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 99 transitions, 427 flow [2023-11-26 12:04:52,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:52,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:52,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:52,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:52,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:52,329 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-26 12:04:52,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:52,329 INFO L85 PathProgramCache]: Analyzing trace with hash -717858786, now seen corresponding path program 1 times [2023-11-26 12:04:52,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:52,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239939525] [2023-11-26 12:04:52,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:52,330 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 [2023-11-26 12:04:52,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:52,332 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:04:52,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-26 12:04:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:52,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:04:52,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:52,553 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 [2023-11-26 12:04:52,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:52,593 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:52,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:52,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239939525] [2023-11-26 12:04:52,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239939525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:52,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:52,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:52,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682415178] [2023-11-26 12:04:52,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:52,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:04:52,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:52,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:04:52,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:52,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 91 [2023-11-26 12:04:52,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 99 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:52,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:52,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 91 [2023-11-26 12:04:52,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:53,481 INFO L124 PetriNetUnfolderBase]: 784/1753 cut-off events. [2023-11-26 12:04:53,481 INFO L125 PetriNetUnfolderBase]: For 359/381 co-relation queries the response was YES. [2023-11-26 12:04:53,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3542 conditions, 1753 events. 784/1753 cut-off events. For 359/381 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11871 event pairs, 558 based on Foata normal form. 0/1570 useless extension candidates. Maximal degree in co-relation 3447. Up to 1246 conditions per place. [2023-11-26 12:04:53,495 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 43 selfloop transitions, 12 changer transitions 0/97 dead transitions. [2023-11-26 12:04:53,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 97 transitions, 533 flow [2023-11-26 12:04:53,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:04:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:04:53,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2023-11-26 12:04:53,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6675824175824175 [2023-11-26 12:04:53,498 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 243 transitions. [2023-11-26 12:04:53,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 243 transitions. [2023-11-26 12:04:53,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:53,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 243 transitions. [2023-11-26 12:04:53,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:53,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:53,501 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:53,502 INFO L175 Difference]: Start difference. First operand has 117 places, 99 transitions, 427 flow. Second operand 4 states and 243 transitions. [2023-11-26 12:04:53,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 97 transitions, 533 flow [2023-11-26 12:04:53,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 97 transitions, 529 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:04:53,508 INFO L231 Difference]: Finished difference. Result has 116 places, 97 transitions, 443 flow [2023-11-26 12:04:53,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=443, PETRI_PLACES=116, PETRI_TRANSITIONS=97} [2023-11-26 12:04:53,509 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 26 predicate places. [2023-11-26 12:04:53,509 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 97 transitions, 443 flow [2023-11-26 12:04:53,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:53,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:53,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:53,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:53,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:53,715 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-26 12:04:53,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:53,715 INFO L85 PathProgramCache]: Analyzing trace with hash -717858785, now seen corresponding path program 1 times [2023-11-26 12:04:53,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:53,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133197656] [2023-11-26 12:04:53,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:53,716 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 [2023-11-26 12:04:53,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:53,718 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:04:53,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-26 12:04:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:53,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 12:04:53,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:53,949 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 [2023-11-26 12:04:54,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:54,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:54,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:54,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133197656] [2023-11-26 12:04:54,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133197656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:54,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:54,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:54,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689427935] [2023-11-26 12:04:54,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:54,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:04:54,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:54,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:04:54,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:54,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 91 [2023-11-26 12:04:54,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 97 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:54,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:54,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 91 [2023-11-26 12:04:54,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:55,146 INFO L124 PetriNetUnfolderBase]: 784/1745 cut-off events. [2023-11-26 12:04:55,146 INFO L125 PetriNetUnfolderBase]: For 410/432 co-relation queries the response was YES. [2023-11-26 12:04:55,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3536 conditions, 1745 events. 784/1745 cut-off events. For 410/432 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11777 event pairs, 558 based on Foata normal form. 8/1570 useless extension candidates. Maximal degree in co-relation 3443. Up to 1246 conditions per place. [2023-11-26 12:04:55,158 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 41 selfloop transitions, 12 changer transitions 0/95 dead transitions. [2023-11-26 12:04:55,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 95 transitions, 545 flow [2023-11-26 12:04:55,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:04:55,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:04:55,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2023-11-26 12:04:55,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6840659340659341 [2023-11-26 12:04:55,161 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 249 transitions. [2023-11-26 12:04:55,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 249 transitions. [2023-11-26 12:04:55,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:55,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 249 transitions. [2023-11-26 12:04:55,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:55,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:55,164 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:55,164 INFO L175 Difference]: Start difference. First operand has 116 places, 97 transitions, 443 flow. Second operand 4 states and 249 transitions. [2023-11-26 12:04:55,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 95 transitions, 545 flow [2023-11-26 12:04:55,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 95 transitions, 521 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:04:55,171 INFO L231 Difference]: Finished difference. Result has 114 places, 95 transitions, 439 flow [2023-11-26 12:04:55,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=439, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2023-11-26 12:04:55,172 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 24 predicate places. [2023-11-26 12:04:55,173 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 439 flow [2023-11-26 12:04:55,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:55,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:55,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:55,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:55,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:55,384 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-26 12:04:55,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:55,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1861992230, now seen corresponding path program 1 times [2023-11-26 12:04:55,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:55,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026702703] [2023-11-26 12:04:55,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:55,385 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 [2023-11-26 12:04:55,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:55,386 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:04:55,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-26 12:04:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:55,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:04:55,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:55,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:55,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:04:55,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:55,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:04:55,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026702703] [2023-11-26 12:04:55,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026702703] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:04:55,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:04:55,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-26 12:04:55,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870059899] [2023-11-26 12:04:55,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:04:55,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:04:55,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:04:55,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:04:55,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:04:55,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 91 [2023-11-26 12:04:55,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 439 flow. Second operand has 6 states, 6 states have (on average 58.833333333333336) internal successors, (353), 6 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:55,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:04:55,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 91 [2023-11-26 12:04:55,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:04:56,590 INFO L124 PetriNetUnfolderBase]: 784/1795 cut-off events. [2023-11-26 12:04:56,590 INFO L125 PetriNetUnfolderBase]: For 510/532 co-relation queries the response was YES. [2023-11-26 12:04:56,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3690 conditions, 1795 events. 784/1795 cut-off events. For 510/532 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11819 event pairs, 558 based on Foata normal form. 6/1614 useless extension candidates. Maximal degree in co-relation 3589. Up to 1242 conditions per place. [2023-11-26 12:04:56,601 INFO L140 encePairwiseOnDemand]: 87/91 looper letters, 59 selfloop transitions, 12 changer transitions 0/113 dead transitions. [2023-11-26 12:04:56,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 113 transitions, 739 flow [2023-11-26 12:04:56,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:04:56,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:04:56,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 390 transitions. [2023-11-26 12:04:56,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-26 12:04:56,605 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 390 transitions. [2023-11-26 12:04:56,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 390 transitions. [2023-11-26 12:04:56,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:04:56,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 390 transitions. [2023-11-26 12:04:56,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 65.0) internal successors, (390), 6 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:56,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:56,608 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 91.0) internal successors, (637), 7 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:56,608 INFO L175 Difference]: Start difference. First operand has 114 places, 95 transitions, 439 flow. Second operand 6 states and 390 transitions. [2023-11-26 12:04:56,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 113 transitions, 739 flow [2023-11-26 12:04:56,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 113 transitions, 687 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:04:56,615 INFO L231 Difference]: Finished difference. Result has 120 places, 101 transitions, 525 flow [2023-11-26 12:04:56,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=525, PETRI_PLACES=120, PETRI_TRANSITIONS=101} [2023-11-26 12:04:56,616 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 30 predicate places. [2023-11-26 12:04:56,616 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 101 transitions, 525 flow [2023-11-26 12:04:56,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.833333333333336) internal successors, (353), 6 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:56,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:04:56,617 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:56,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:56,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 12:04:56,820 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-26 12:04:56,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:56,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1064317019, now seen corresponding path program 1 times [2023-11-26 12:04:56,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:04:56,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132043053] [2023-11-26 12:04:56,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:56,821 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 [2023-11-26 12:04:56,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:04:56,825 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -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) [2023-11-26 12:04:56,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51422633-b64f-4be9-b225-8079246071f2/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-26 12:04:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:57,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-26 12:04:57,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:57,323 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 [2023-11-26 12:04:57,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-26 12:04:57,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-26 12:04:57,673 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-26 12:04:57,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-26 12:04:57,707 INFO L349 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2023-11-26 12:04:57,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2023-11-26 12:04:57,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-26 12:04:57,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-26 12:04:57,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-26 12:04:57,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-26 12:04:57,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-26 12:04:57,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-26 12:04:58,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-26 12:04:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:58,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:04:58,321 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_692 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_692) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_692 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_693 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_692) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_693) |c_~#c~0.base|) .cse1)))))) is different from false [2023-11-26 12:04:58,394 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_692 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_693 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_692) |c_~#c~0.base|) .cse0) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_693) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_692 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_692) |c_~#c~0.base|) .cse0))) (bvule (bvadd .cse1 (_ bv4 32)) (bvadd .cse1 (_ bv8 32))))))) is different from false [2023-11-26 12:04:58,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:04:58,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 109 [2023-11-26 12:04:58,739 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:04:58,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 85 [2023-11-26 12:04:58,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:04:58,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 121 [2023-11-26 12:04:58,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:04:58,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 163 [2023-11-26 12:04:58,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 85 [2023-11-26 12:04:58,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 79 [2023-11-26 12:04:59,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 12:04:59,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 112 [2023-11-26 12:04:59,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 63 [2023-11-26 12:05:00,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-11-26 12:05:00,188 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:05:00,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132043053] [2023-11-26 12:05:00,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132043053] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:05:00,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:05:00,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-11-26 12:05:00,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527415144] [2023-11-26 12:05:00,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:05:00,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-26 12:05:00,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:05:00,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-26 12:05:00,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=175, Unknown=2, NotChecked=54, Total=272 [2023-11-26 12:05:01,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 91 [2023-11-26 12:05:01,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 101 transitions, 525 flow. Second operand has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 17 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:01,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:05:01,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 91 [2023-11-26 12:05:01,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand