./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:02:36,626 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:02:36,740 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 12:02:36,749 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:02:36,750 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:02:36,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:02:36,785 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:02:36,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:02:36,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:02:36,788 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:02:36,788 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:02:36,789 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:02:36,790 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:02:36,791 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:02:36,791 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:02:36,792 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:02:36,793 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:02:36,793 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:02:36,794 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:02:36,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:02:36,795 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:02:36,796 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:02:36,796 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:02:36,797 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:02:36,797 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:02:36,798 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:02:36,799 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:02:36,799 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:02:36,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:02:36,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:02:36,801 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:02:36,801 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:02:36,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:02:36,802 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:02:36,803 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:02:36,803 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:02:36,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:02:36,804 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:02:36,805 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:02:36,805 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:02:36,806 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:02:36,807 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_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2023-11-26 12:02:37,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:02:37,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:02:37,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:02:37,116 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:02:37,116 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:02:37,118 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2023-11-26 12:02:40,210 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:02:40,482 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:02:40,482 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2023-11-26 12:02:40,497 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/data/12af078dd/54b8d8bd5664446f92050fa503fe797c/FLAGe45daec38 [2023-11-26 12:02:40,522 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/data/12af078dd/54b8d8bd5664446f92050fa503fe797c [2023-11-26 12:02:40,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:02:40,532 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:02:40,537 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:40,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:02:40,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:02:40,547 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:40" (1/1) ... [2023-11-26 12:02:40,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e4d8c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:40, skipping insertion in model container [2023-11-26 12:02:40,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:40" (1/1) ... [2023-11-26 12:02:40,586 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:02:40,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:40,881 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 12:02:40,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@c5fd5be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:40, skipping insertion in model container [2023-11-26 12:02:40,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:40,883 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-26 12:02:40,885 INFO L158 Benchmark]: Toolchain (without parser) took 351.75ms. Allocated memory is still 146.8MB. Free memory was 102.4MB in the beginning and 91.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 12:02:40,886 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 146.8MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:02:40,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.60ms. Allocated memory is still 146.8MB. Free memory was 102.0MB in the beginning and 91.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 12:02:40,890 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 146.8MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.60ms. Allocated memory is still 146.8MB. Free memory was 102.0MB in the beginning and 91.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 106]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:02:43,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:02:43,657 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-26 12:02:43,665 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:02:43,666 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:02:43,713 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:02:43,714 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:02:43,714 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:02:43,715 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:02:43,721 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:02:43,721 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:02:43,722 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:02:43,722 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:02:43,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:02:43,725 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:02:43,725 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:02:43,726 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:02:43,726 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:02:43,726 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:02:43,728 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:02:43,728 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:02:43,729 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:02:43,729 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:02:43,729 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:02:43,730 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:02:43,730 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 12:02:43,731 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 12:02:43,731 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:02:43,731 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:02:43,732 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:02:43,734 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:02:43,734 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:02:43,734 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:02:43,734 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:02:43,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:02:43,735 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:02:43,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:02:43,736 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 12:02:43,737 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 12:02:43,737 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:02:43,737 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:02:43,738 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:02:43,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:02:43,738 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 12:02:43,739 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_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2023-11-26 12:02:44,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:02:44,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:02:44,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:02:44,204 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:02:44,205 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:02:44,206 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2023-11-26 12:02:47,438 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:02:47,710 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:02:47,711 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2023-11-26 12:02:47,718 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/data/60ba374be/df167a96a41f43b99cbc6648d789a015/FLAGb2556c27e [2023-11-26 12:02:47,731 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/data/60ba374be/df167a96a41f43b99cbc6648d789a015 [2023-11-26 12:02:47,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:02:47,735 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:02:47,737 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:47,737 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:02:47,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:02:47,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:47" (1/1) ... [2023-11-26 12:02:47,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128621bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:47, skipping insertion in model container [2023-11-26 12:02:47,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:47" (1/1) ... [2023-11-26 12:02:47,773 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:02:47,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:48,000 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-26 12:02:48,005 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:02:48,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:48,033 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:02:48,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:48,118 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:02:48,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:48 WrapperNode [2023-11-26 12:02:48,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:48,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:02:48,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:02:48,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:02:48,129 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:48" (1/1) ... [2023-11-26 12:02:48,159 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:48" (1/1) ... [2023-11-26 12:02:48,207 INFO L138 Inliner]: procedures = 27, calls = 47, calls flagged for inlining = 12, calls inlined = 18, statements flattened = 202 [2023-11-26 12:02:48,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:02:48,209 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:02:48,209 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:02:48,209 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:02:48,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:48" (1/1) ... [2023-11-26 12:02:48,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:48" (1/1) ... [2023-11-26 12:02:48,244 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:48" (1/1) ... [2023-11-26 12:02:48,282 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 15, 2, 2, 2]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 10 writes are split as follows [0, 7, 1, 1, 1]. [2023-11-26 12:02:48,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:48" (1/1) ... [2023-11-26 12:02:48,283 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:48" (1/1) ... [2023-11-26 12:02:48,309 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:48" (1/1) ... [2023-11-26 12:02:48,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:48" (1/1) ... [2023-11-26 12:02:48,317 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:48" (1/1) ... [2023-11-26 12:02:48,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:48" (1/1) ... [2023-11-26 12:02:48,325 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:02:48,326 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:02:48,326 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:02:48,326 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:02:48,327 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:48" (1/1) ... [2023-11-26 12:02:48,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:02:48,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:48,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:02:48,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:02:48,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:02:48,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 12:02:48,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 12:02:48,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-26 12:02:48,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-26 12:02:48,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-26 12:02:48,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:02:48,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-26 12:02:48,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-26 12:02:48,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-26 12:02:48,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-26 12:02:48,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-26 12:02:48,425 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 12:02:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 12:02:48,426 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 12:02:48,426 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 12:02:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 12:02:48,427 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 12:02:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:02:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:02:48,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:02:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:02:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 12:02:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-26 12:02:48,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-26 12:02:48,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-26 12:02:48,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-26 12:02:48,433 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 12:02:48,639 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:02:48,642 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:02:49,536 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:02:49,926 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:02:49,926 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-26 12:02:49,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:49 BoogieIcfgContainer [2023-11-26 12:02:49,927 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:02:49,930 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:02:49,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:02:49,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:02:49,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:02:47" (1/3) ... [2023-11-26 12:02:49,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e704e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:02:49, skipping insertion in model container [2023-11-26 12:02:49,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:48" (2/3) ... [2023-11-26 12:02:49,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e704e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:02:49, skipping insertion in model container [2023-11-26 12:02:49,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:49" (3/3) ... [2023-11-26 12:02:49,940 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2023-11-26 12:02:49,961 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:02:49,962 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-26 12:02:49,962 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:02:50,068 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 12:02:50,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 100 transitions, 221 flow [2023-11-26 12:02:50,187 INFO L124 PetriNetUnfolderBase]: 7/97 cut-off events. [2023-11-26 12:02:50,187 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 12:02:50,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 97 events. 7/97 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 262 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2023-11-26 12:02:50,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 100 transitions, 221 flow [2023-11-26 12:02:50,203 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 96 transitions, 210 flow [2023-11-26 12:02:50,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:02:50,232 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;@1225e05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:02:50,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2023-11-26 12:02:50,236 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:02:50,237 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-26 12:02:50,237 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:02:50,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:50,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 12:02:50,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-26 12:02:50,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:50,245 INFO L85 PathProgramCache]: Analyzing trace with hash 788599, now seen corresponding path program 1 times [2023-11-26 12:02:50,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:50,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106524699] [2023-11-26 12:02:50,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:50,263 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 12:02:50,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:50,268 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:02:50,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:02:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:50,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:02:50,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:50,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 12:02:50,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:02:50,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:50,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:02:50,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:50,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:02:50,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:50,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:02:50,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-26 12:02:50,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:02:50,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:50,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:02:50,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:50,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:02:50,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:50,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:02:50,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:02:50,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:50,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:50,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:02:50,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:50,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:02:50,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:02:50,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:50,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 12:02:50,945 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 12:02:50,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:50,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:50,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106524699] [2023-11-26 12:02:50,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106524699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:50,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:50,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:02:50,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631275869] [2023-11-26 12:02:50,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:50,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:02:50,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:50,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:02:50,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:02:51,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 100 [2023-11-26 12:02:51,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 12:02:51,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:51,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 100 [2023-11-26 12:02:51,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:51,515 INFO L124 PetriNetUnfolderBase]: 203/679 cut-off events. [2023-11-26 12:02:51,515 INFO L125 PetriNetUnfolderBase]: For 54/56 co-relation queries the response was YES. [2023-11-26 12:02:51,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 679 events. 203/679 cut-off events. For 54/56 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4477 event pairs, 124 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 894. Up to 294 conditions per place. [2023-11-26 12:02:51,527 INFO L140 encePairwiseOnDemand]: 93/100 looper letters, 31 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-11-26 12:02:51,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 264 flow [2023-11-26 12:02:51,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:51,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 221 transitions. [2023-11-26 12:02:51,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7366666666666667 [2023-11-26 12:02:51,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 221 transitions. [2023-11-26 12:02:51,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 221 transitions. [2023-11-26 12:02:51,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:51,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 221 transitions. [2023-11-26 12:02:51,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 12:02:51,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 12:02:51,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 12:02:51,558 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 210 flow. Second operand 3 states and 221 transitions. [2023-11-26 12:02:51,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 264 flow [2023-11-26 12:02:51,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 252 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-26 12:02:51,566 INFO L231 Difference]: Finished difference. Result has 89 places, 90 transitions, 190 flow [2023-11-26 12:02:51,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=89, PETRI_TRANSITIONS=90} [2023-11-26 12:02:51,572 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -10 predicate places. [2023-11-26 12:02:51,573 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 90 transitions, 190 flow [2023-11-26 12:02:51,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 12:02:51,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:51,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 12:02:51,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:02:51,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:02:51,784 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-26 12:02:51,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:51,785 INFO L85 PathProgramCache]: Analyzing trace with hash 788600, now seen corresponding path program 1 times [2023-11-26 12:02:51,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:51,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145762440] [2023-11-26 12:02:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:51,786 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 12:02:51,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:51,791 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:02:51,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:02:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:51,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:02:51,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:51,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-26 12:02:51,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:51,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-26 12:02:51,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:51,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:52,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:52,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:52,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:52,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:52,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:52,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:52,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:52,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:52,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:52,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:52,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:52,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:52,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:52,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:52,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:52,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:52,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:52,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:52,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:52,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:52,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:52,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:52,397 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 12:02:52,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:02:52,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:52,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145762440] [2023-11-26 12:02:52,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145762440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:52,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:52,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:52,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635307419] [2023-11-26 12:02:52,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:52,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:52,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:52,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:52,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:53,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 100 [2023-11-26 12:02:53,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 90 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 12:02:53,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:53,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 100 [2023-11-26 12:02:53,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:53,661 INFO L124 PetriNetUnfolderBase]: 207/691 cut-off events. [2023-11-26 12:02:53,661 INFO L125 PetriNetUnfolderBase]: For 13/15 co-relation queries the response was YES. [2023-11-26 12:02:53,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 691 events. 207/691 cut-off events. For 13/15 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4501 event pairs, 124 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 967. Up to 311 conditions per place. [2023-11-26 12:02:53,671 INFO L140 encePairwiseOnDemand]: 83/100 looper letters, 36 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2023-11-26 12:02:53,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 102 transitions, 314 flow [2023-11-26 12:02:53,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:02:53,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:02:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2023-11-26 12:02:53,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7425 [2023-11-26 12:02:53,675 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 297 transitions. [2023-11-26 12:02:53,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 297 transitions. [2023-11-26 12:02:53,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:53,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 297 transitions. [2023-11-26 12:02:53,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 12:02:53,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 12:02:53,681 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 12:02:53,681 INFO L175 Difference]: Start difference. First operand has 89 places, 90 transitions, 190 flow. Second operand 4 states and 297 transitions. [2023-11-26 12:02:53,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 102 transitions, 314 flow [2023-11-26 12:02:53,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 102 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:02:53,685 INFO L231 Difference]: Finished difference. Result has 93 places, 102 transitions, 294 flow [2023-11-26 12:02:53,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=93, PETRI_TRANSITIONS=102} [2023-11-26 12:02:53,687 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -6 predicate places. [2023-11-26 12:02:53,687 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 102 transitions, 294 flow [2023-11-26 12:02:53,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 12:02:53,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:53,688 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-26 12:02:53,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:02:53,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:02:53,890 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-26 12:02:53,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:53,891 INFO L85 PathProgramCache]: Analyzing trace with hash 757870166, now seen corresponding path program 1 times [2023-11-26 12:02:53,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:02:53,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860627986] [2023-11-26 12:02:53,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:53,892 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 12:02:53,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:02:53,893 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:02:53,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:02:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:53,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 12:02:53,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:02:54,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-26 12:02:54,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:54,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:54,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:54,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:54,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:54,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:54,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:54,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:54,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:54,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:54,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:54,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-26 12:02:54,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:54,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:54,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:54,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:54,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:54,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:54,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:54,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:54,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:02:54,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:02:54,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:02:54,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:02:54,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:54,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:02:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:55,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:02:55,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860627986] [2023-11-26 12:02:55,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860627986] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:02:55,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:02:55,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-26 12:02:55,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674723281] [2023-11-26 12:02:55,133 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:02:55,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:02:55,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:02:55,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:02:55,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:02:58,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 100 [2023-11-26 12:02:58,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 102 transitions, 294 flow. Second operand has 10 states, 10 states have (on average 62.0) internal successors, (620), 10 states have internal predecessors, (620), 0 states have call successors, (0), 0 states 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 12:02:58,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:58,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 100 [2023-11-26 12:02:58,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:02,415 INFO L124 PetriNetUnfolderBase]: 219/727 cut-off events. [2023-11-26 12:03:02,416 INFO L125 PetriNetUnfolderBase]: For 25/27 co-relation queries the response was YES. [2023-11-26 12:03:02,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 727 events. 219/727 cut-off events. For 25/27 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4710 event pairs, 124 based on Foata normal form. 0/485 useless extension candidates. Maximal degree in co-relation 984. Up to 314 conditions per place. [2023-11-26 12:03:02,427 INFO L140 encePairwiseOnDemand]: 83/100 looper letters, 36 selfloop transitions, 49 changer transitions 0/138 dead transitions. [2023-11-26 12:03:02,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 138 transitions, 626 flow [2023-11-26 12:03:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 12:03:02,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 12:03:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 707 transitions. [2023-11-26 12:03:02,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.707 [2023-11-26 12:03:02,433 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 707 transitions. [2023-11-26 12:03:02,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 707 transitions. [2023-11-26 12:03:02,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:02,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 707 transitions. [2023-11-26 12:03:02,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 70.7) internal successors, (707), 10 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 12:03:02,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 100.0) internal successors, (1100), 11 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states 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 12:03:02,444 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 100.0) internal successors, (1100), 11 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states 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 12:03:02,444 INFO L175 Difference]: Start difference. First operand has 93 places, 102 transitions, 294 flow. Second operand 10 states and 707 transitions. [2023-11-26 12:03:02,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 138 transitions, 626 flow [2023-11-26 12:03:02,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 138 transitions, 626 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:03:02,464 INFO L231 Difference]: Finished difference. Result has 105 places, 138 transitions, 620 flow [2023-11-26 12:03:02,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=620, PETRI_PLACES=105, PETRI_TRANSITIONS=138} [2023-11-26 12:03:02,466 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 6 predicate places. [2023-11-26 12:03:02,466 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 138 transitions, 620 flow [2023-11-26 12:03:02,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 62.0) internal successors, (620), 10 states have internal predecessors, (620), 0 states have call successors, (0), 0 states 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 12:03:02,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:02,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 12:03:02,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:02,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:02,670 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-26 12:03:02,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:02,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2022208147, now seen corresponding path program 1 times [2023-11-26 12:03:02,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:03:02,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560897835] [2023-11-26 12:03:02,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:02,672 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 12:03:02,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:03:02,674 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:02,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:02,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 12:03:02,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:02,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:02,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:02,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:02,955 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-26 12:03:02,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 18 [2023-11-26 12:03:02,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:03,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:03,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:03,050 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2023-11-26 12:03:03,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 1 [2023-11-26 12:03:03,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:03,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:03,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:03,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:03,111 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 12:03:03,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-26 12:03:03,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:03,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:03,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:03,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 1 [2023-11-26 12:03:03,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:03,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:03,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:03,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 1 [2023-11-26 12:03:03,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:03,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:03,219 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 12:03:03,220 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 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-26 12:03:03,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:03,258 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 12:03:03,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:03,294 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 12:03:03,352 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-26 12:03:03,353 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 20 [2023-11-26 12:03:03,385 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 12:03:03,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:03,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:03:03,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560897835] [2023-11-26 12:03:03,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560897835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:03,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:03,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:03:03,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528392824] [2023-11-26 12:03:03,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:03,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:03:03,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:03:03,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:03:03,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:03:03,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 100 [2023-11-26 12:03:03,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 138 transitions, 620 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:03,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:03,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 100 [2023-11-26 12:03:03,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:04,095 INFO L124 PetriNetUnfolderBase]: 219/717 cut-off events. [2023-11-26 12:03:04,095 INFO L125 PetriNetUnfolderBase]: For 68/70 co-relation queries the response was YES. [2023-11-26 12:03:04,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 717 events. 219/717 cut-off events. For 68/70 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4591 event pairs, 124 based on Foata normal form. 28/520 useless extension candidates. Maximal degree in co-relation 1145. Up to 353 conditions per place. [2023-11-26 12:03:04,104 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 80 selfloop transitions, 1 changer transitions 0/136 dead transitions. [2023-11-26 12:03:04,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 136 transitions, 778 flow [2023-11-26 12:03:04,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:04,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:04,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-11-26 12:03:04,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7466666666666667 [2023-11-26 12:03:04,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-11-26 12:03:04,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-11-26 12:03:04,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:04,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-11-26 12:03:04,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 12:03:04,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 12:03:04,110 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 12:03:04,110 INFO L175 Difference]: Start difference. First operand has 105 places, 138 transitions, 620 flow. Second operand 3 states and 224 transitions. [2023-11-26 12:03:04,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 136 transitions, 778 flow [2023-11-26 12:03:04,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 136 transitions, 652 flow, removed 32 selfloop flow, removed 4 redundant places. [2023-11-26 12:03:04,119 INFO L231 Difference]: Finished difference. Result has 101 places, 136 transitions, 492 flow [2023-11-26 12:03:04,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=101, PETRI_TRANSITIONS=136} [2023-11-26 12:03:04,120 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 2 predicate places. [2023-11-26 12:03:04,120 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 136 transitions, 492 flow [2023-11-26 12:03:04,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:04,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:04,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 12:03:04,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:04,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:04,324 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-26 12:03:04,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:04,325 INFO L85 PathProgramCache]: Analyzing trace with hash 2022208148, now seen corresponding path program 1 times [2023-11-26 12:03:04,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:03:04,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487777715] [2023-11-26 12:03:04,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:04,328 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 12:03:04,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:03:04,330 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:04,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:04,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-26 12:03:04,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:04,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:04,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:04,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-26 12:03:04,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:04,647 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-26 12:03:04,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-26 12:03:04,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:04,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-26 12:03:04,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:04,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:04,698 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 15 treesize of output 18 [2023-11-26 12:03:04,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:04,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-26 12:03:04,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:04,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:04,755 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 15 treesize of output 18 [2023-11-26 12:03:04,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:04,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:04,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:04,826 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-26 12:03:04,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2023-11-26 12:03:04,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:04,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-26 12:03:04,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:04,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:04,964 INFO L349 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2023-11-26 12:03:04,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2023-11-26 12:03:04,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:04,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-26 12:03:05,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:05,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:05,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-26 12:03:05,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:05,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:05,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:05,083 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-26 12:03:05,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2023-11-26 12:03:05,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:05,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:05,235 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-26 12:03:05,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2023-11-26 12:03:05,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:05,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-26 12:03:05,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:05,404 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 12:03:05,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:05,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:05,459 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-26 12:03:05,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 32 [2023-11-26 12:03:05,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:05,592 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 12:03:05,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:05,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:05,636 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-26 12:03:05,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2023-11-26 12:03:05,820 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 12:03:05,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:05,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:03:05,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487777715] [2023-11-26 12:03:05,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487777715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:05,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:05,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:03:05,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170472092] [2023-11-26 12:03:05,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:05,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:03:05,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:03:05,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:03:05,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:03:07,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 100 [2023-11-26 12:03:07,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 136 transitions, 492 flow. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 12:03:07,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:07,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 100 [2023-11-26 12:03:07,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:07,603 INFO L124 PetriNetUnfolderBase]: 219/707 cut-off events. [2023-11-26 12:03:07,603 INFO L125 PetriNetUnfolderBase]: For 40/42 co-relation queries the response was YES. [2023-11-26 12:03:07,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 707 events. 219/707 cut-off events. For 40/42 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4444 event pairs, 124 based on Foata normal form. 28/517 useless extension candidates. Maximal degree in co-relation 1179. Up to 353 conditions per place. [2023-11-26 12:03:07,616 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 80 selfloop transitions, 1 changer transitions 0/134 dead transitions. [2023-11-26 12:03:07,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 134 transitions, 650 flow [2023-11-26 12:03:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:07,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:07,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-11-26 12:03:07,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7266666666666667 [2023-11-26 12:03:07,619 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-11-26 12:03:07,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-11-26 12:03:07,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:07,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-11-26 12:03:07,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 12:03:07,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 12:03:07,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 12:03:07,623 INFO L175 Difference]: Start difference. First operand has 101 places, 136 transitions, 492 flow. Second operand 3 states and 218 transitions. [2023-11-26 12:03:07,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 134 transitions, 650 flow [2023-11-26 12:03:07,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 134 transitions, 649 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:03:07,636 INFO L231 Difference]: Finished difference. Result has 100 places, 134 transitions, 489 flow [2023-11-26 12:03:07,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=489, PETRI_PLACES=100, PETRI_TRANSITIONS=134} [2023-11-26 12:03:07,639 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 1 predicate places. [2023-11-26 12:03:07,639 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 134 transitions, 489 flow [2023-11-26 12:03:07,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 5 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 12:03:07,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:07,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:07,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:07,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:07,841 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-26 12:03:07,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:07,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1902541247, now seen corresponding path program 1 times [2023-11-26 12:03:07,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:03:07,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592862516] [2023-11-26 12:03:07,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:07,842 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 12:03:07,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:03:07,843 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:07,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:08,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 12:03:08,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:08,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:08,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:08,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-26 12:03:08,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:08,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-26 12:03:08,128 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:03:08,135 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:03:08,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:08,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:08,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:08,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:03:08,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:08,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:08,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 12:03:08,220 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:03:08,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:08,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:08,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:08,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:03:08,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:08,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:08,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:08,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 12:03:08,316 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 12:03:08,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:08,361 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 12:03:08,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:08,398 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 12:03:08,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:08,433 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 12:03:08,540 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 12:03:08,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:08,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:03:08,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592862516] [2023-11-26 12:03:08,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592862516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:08,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:08,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:03:08,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803409530] [2023-11-26 12:03:08,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:08,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:03:08,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:03:08,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:03:08,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:03:09,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 100 [2023-11-26 12:03:09,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 134 transitions, 489 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 12:03:09,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:09,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 100 [2023-11-26 12:03:09,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:09,331 INFO L124 PetriNetUnfolderBase]: 219/703 cut-off events. [2023-11-26 12:03:09,332 INFO L125 PetriNetUnfolderBase]: For 40/42 co-relation queries the response was YES. [2023-11-26 12:03:09,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 703 events. 219/703 cut-off events. For 40/42 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4412 event pairs, 124 based on Foata normal form. 9/498 useless extension candidates. Maximal degree in co-relation 1175. Up to 353 conditions per place. [2023-11-26 12:03:09,340 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 80 selfloop transitions, 1 changer transitions 0/132 dead transitions. [2023-11-26 12:03:09,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 132 transitions, 647 flow [2023-11-26 12:03:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:09,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:09,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-11-26 12:03:09,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7466666666666667 [2023-11-26 12:03:09,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-11-26 12:03:09,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-11-26 12:03:09,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:09,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-11-26 12:03:09,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 12:03:09,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 12:03:09,345 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 12:03:09,346 INFO L175 Difference]: Start difference. First operand has 100 places, 134 transitions, 489 flow. Second operand 3 states and 224 transitions. [2023-11-26 12:03:09,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 132 transitions, 647 flow [2023-11-26 12:03:09,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 132 transitions, 646 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:03:09,351 INFO L231 Difference]: Finished difference. Result has 99 places, 132 transitions, 486 flow [2023-11-26 12:03:09,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=99, PETRI_TRANSITIONS=132} [2023-11-26 12:03:09,352 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 0 predicate places. [2023-11-26 12:03:09,352 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 132 transitions, 486 flow [2023-11-26 12:03:09,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 12:03:09,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:09,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:09,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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)] Ended with exit code 0 [2023-11-26 12:03:09,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:09,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-26 12:03:09,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:09,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1902541248, now seen corresponding path program 1 times [2023-11-26 12:03:09,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:03:09,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27740398] [2023-11-26 12:03:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:09,558 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 12:03:09,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:03:09,559 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:09,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:09,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 12:03:09,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:09,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:09,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:09,780 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 15 treesize of output 11 [2023-11-26 12:03:09,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:09,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:09,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:09,842 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 12:03:09,842 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 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-26 12:03:09,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:09,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:09,890 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 12:03:09,890 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 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-26 12:03:09,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:09,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:09,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:09,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 1 [2023-11-26 12:03:09,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:09,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:09,966 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 12:03:09,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-26 12:03:09,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:09,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:09,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:09,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 12:03:10,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:10,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:10,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:10,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:10,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-11-26 12:03:10,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:10,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:10,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:10,088 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-26 12:03:10,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-26 12:03:10,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:10,129 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 12:03:10,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:10,159 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 12:03:10,211 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-26 12:03:10,211 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 20 [2023-11-26 12:03:10,298 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 12:03:10,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:10,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:03:10,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27740398] [2023-11-26 12:03:10,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27740398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:10,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:10,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:03:10,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106391625] [2023-11-26 12:03:10,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:10,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:03:10,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:03:10,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:03:10,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:03:10,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 100 [2023-11-26 12:03:10,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 132 transitions, 486 flow. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 12:03:10,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:10,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 100 [2023-11-26 12:03:10,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:10,919 INFO L124 PetriNetUnfolderBase]: 219/699 cut-off events. [2023-11-26 12:03:10,919 INFO L125 PetriNetUnfolderBase]: For 40/42 co-relation queries the response was YES. [2023-11-26 12:03:10,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 699 events. 219/699 cut-off events. For 40/42 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4364 event pairs, 124 based on Foata normal form. 9/498 useless extension candidates. Maximal degree in co-relation 1171. Up to 353 conditions per place. [2023-11-26 12:03:10,927 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 80 selfloop transitions, 1 changer transitions 0/130 dead transitions. [2023-11-26 12:03:10,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 130 transitions, 644 flow [2023-11-26 12:03:10,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:03:10,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:03:10,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-11-26 12:03:10,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7466666666666667 [2023-11-26 12:03:10,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-11-26 12:03:10,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-11-26 12:03:10,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:10,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-11-26 12:03:10,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 12:03:10,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 12:03:10,932 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 12:03:10,933 INFO L175 Difference]: Start difference. First operand has 99 places, 132 transitions, 486 flow. Second operand 3 states and 224 transitions. [2023-11-26 12:03:10,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 130 transitions, 644 flow [2023-11-26 12:03:10,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 130 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:03:10,938 INFO L231 Difference]: Finished difference. Result has 98 places, 130 transitions, 483 flow [2023-11-26 12:03:10,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=483, PETRI_PLACES=98, PETRI_TRANSITIONS=130} [2023-11-26 12:03:10,939 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -1 predicate places. [2023-11-26 12:03:10,939 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 130 transitions, 483 flow [2023-11-26 12:03:10,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 4 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 12:03:10,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:10,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:10,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:11,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:11,143 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-26 12:03:11,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:11,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1150813936, now seen corresponding path program 1 times [2023-11-26 12:03:11,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:03:11,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892753592] [2023-11-26 12:03:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:11,145 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 12:03:11,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:03:11,146 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:11,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:11,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 12:03:11,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:11,350 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 12:03:11,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:03:11,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:03:11,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892753592] [2023-11-26 12:03:11,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892753592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:11,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:11,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:03:11,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21291936] [2023-11-26 12:03:11,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:11,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:03:11,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:03:11,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:03:11,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:03:11,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 100 [2023-11-26 12:03:11,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 130 transitions, 483 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states 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 12:03:11,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:11,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 100 [2023-11-26 12:03:11,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:12,080 INFO L124 PetriNetUnfolderBase]: 450/1444 cut-off events. [2023-11-26 12:03:12,080 INFO L125 PetriNetUnfolderBase]: For 53/57 co-relation queries the response was YES. [2023-11-26 12:03:12,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2304 conditions, 1444 events. 450/1444 cut-off events. For 53/57 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 10466 event pairs, 244 based on Foata normal form. 4/988 useless extension candidates. Maximal degree in co-relation 2288. Up to 418 conditions per place. [2023-11-26 12:03:12,095 INFO L140 encePairwiseOnDemand]: 84/100 looper letters, 88 selfloop transitions, 24 changer transitions 1/161 dead transitions. [2023-11-26 12:03:12,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 161 transitions, 786 flow [2023-11-26 12:03:12,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:03:12,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:03:12,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 466 transitions. [2023-11-26 12:03:12,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7766666666666666 [2023-11-26 12:03:12,098 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 466 transitions. [2023-11-26 12:03:12,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 466 transitions. [2023-11-26 12:03:12,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:03:12,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 466 transitions. [2023-11-26 12:03:12,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 states 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 12:03:12,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:12,103 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:03:12,103 INFO L175 Difference]: Start difference. First operand has 98 places, 130 transitions, 483 flow. Second operand 6 states and 466 transitions. [2023-11-26 12:03:12,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 161 transitions, 786 flow [2023-11-26 12:03:12,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 161 transitions, 785 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:03:12,109 INFO L231 Difference]: Finished difference. Result has 106 places, 135 transitions, 596 flow [2023-11-26 12:03:12,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=596, PETRI_PLACES=106, PETRI_TRANSITIONS=135} [2023-11-26 12:03:12,110 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 7 predicate places. [2023-11-26 12:03:12,110 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 135 transitions, 596 flow [2023-11-26 12:03:12,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states 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 12:03:12,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:03:12,110 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2023-11-26 12:03:12,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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)] Forceful destruction successful, exit code 0 [2023-11-26 12:03:12,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:12,314 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2023-11-26 12:03:12,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:12,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1089479408, now seen corresponding path program 2 times [2023-11-26 12:03:12,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 12:03:12,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196019379] [2023-11-26 12:03:12,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:03:12,315 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 12:03:12,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 12:03:12,317 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:12,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_68c81c8e-c5e3-4c5f-a979-35a96b6fea20/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 12:03:12,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 12:03:12,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:03:12,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 12:03:12,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:03:12,482 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 8 treesize of output 7 [2023-11-26 12:03:12,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:03:12,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:03:12,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:03:12,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:03:12,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:03:12,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:03:12,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:03:12,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:03:12,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:03:12,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:03:12,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:03:12,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:03:12,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-26 12:03:12,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:03:12,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:03:12,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:03:12,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:03:12,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:03:12,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-26 12:03:12,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:03:12,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:03:12,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 12:03:12,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 12:03:12,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-26 12:03:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:13,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:03:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:14,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 12:03:14,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196019379] [2023-11-26 12:03:14,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196019379] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:03:14,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 12:03:14,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-26 12:03:14,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982451166] [2023-11-26 12:03:14,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 12:03:14,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 12:03:14,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 12:03:14,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 12:03:14,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-26 12:03:22,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 100 [2023-11-26 12:03:22,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 135 transitions, 596 flow. Second operand has 14 states, 14 states have (on average 62.57142857142857) internal successors, (876), 14 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 12:03:22,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:03:22,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 100 [2023-11-26 12:03:22,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:03:28,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:03:29,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:03:32,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 12:03:34,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []