./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_06-ptra_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_06-ptra_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx --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 e4d7ddac57159b9ffdb625c6e71ce7282574c20e8d076ceee5f26bffd815ae46 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:08:43,922 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:08:44,057 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:08:44,069 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:08:44,070 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:08:44,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:08:44,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:08:44,115 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:08:44,116 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:08:44,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:08:44,123 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:08:44,124 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:08:44,124 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:08:44,126 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:08:44,127 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:08:44,128 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:08:44,128 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:08:44,129 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:08:44,130 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:08:44,130 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:08:44,131 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:08:44,132 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:08:44,132 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:08:44,133 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:08:44,133 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:08:44,134 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:08:44,135 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:08:44,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:08:44,136 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:08:44,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:08:44,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:08:44,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:08:44,140 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:08:44,140 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:08:44,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:08:44,141 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:08:44,141 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:08:44,141 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:08:44,142 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:08:44,142 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_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4d7ddac57159b9ffdb625c6e71ce7282574c20e8d076ceee5f26bffd815ae46 [2023-11-21 22:08:44,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:08:44,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:08:44,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:08:44,496 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:08:44,496 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:08:44,498 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/goblint-regression/09-regions_06-ptra_nr.i [2023-11-21 22:08:47,811 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:08:48,176 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:08:48,176 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/sv-benchmarks/c/goblint-regression/09-regions_06-ptra_nr.i [2023-11-21 22:08:48,200 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/data/48d8cd4a5/36a8d375ee6a417f8e162b0ac88a6ca8/FLAGdf75e20a0 [2023-11-21 22:08:48,216 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/data/48d8cd4a5/36a8d375ee6a417f8e162b0ac88a6ca8 [2023-11-21 22:08:48,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:08:48,221 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:08:48,222 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:08:48,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:08:48,228 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:08:48,229 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:08:48" (1/1) ... [2023-11-21 22:08:48,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297c8952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:48, skipping insertion in model container [2023-11-21 22:08:48,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:08:48" (1/1) ... [2023-11-21 22:08:48,299 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:08:49,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:08:49,021 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) [2023-11-21 22:08:49,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b6d3604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:49, skipping insertion in model container [2023-11-21 22:08:49,022 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:08:49,023 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 22:08:49,025 INFO L158 Benchmark]: Toolchain (without parser) took 803.25ms. Allocated memory is still 111.1MB. Free memory was 64.2MB in the beginning and 48.1MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 22:08:49,025 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 111.1MB. Free memory was 80.6MB in the beginning and 80.6MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:08:49,026 INFO L158 Benchmark]: CACSL2BoogieTranslator took 800.49ms. Allocated memory is still 111.1MB. Free memory was 64.2MB in the beginning and 48.1MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 22:08:49,028 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 111.1MB. Free memory was 80.6MB in the beginning and 80.6MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 800.49ms. Allocated memory is still 111.1MB. Free memory was 64.2MB in the beginning and 48.1MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1239]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_06-ptra_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx --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 e4d7ddac57159b9ffdb625c6e71ce7282574c20e8d076ceee5f26bffd815ae46 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:08:51,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:08:51,809 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 22:08:51,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:08:51,825 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:08:51,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:08:51,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:08:51,881 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:08:51,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:08:51,889 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:08:51,890 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:08:51,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:08:51,891 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:08:51,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:08:51,894 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:08:51,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:08:51,896 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:08:51,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:08:51,897 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:08:51,898 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:08:51,899 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:08:51,900 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:08:51,900 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:08:51,901 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:08:51,902 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:08:51,902 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:08:51,903 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:08:51,904 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:08:51,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:08:51,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:08:51,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:08:51,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:08:51,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:08:51,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:08:51,909 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:08:51,909 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:08:51,910 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:08:51,910 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:08:51,911 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:08:51,912 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:08:51,912 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:08:51,913 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:08:51,913 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_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4d7ddac57159b9ffdb625c6e71ce7282574c20e8d076ceee5f26bffd815ae46 [2023-11-21 22:08:52,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:08:52,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:08:52,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:08:52,517 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:08:52,517 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:08:52,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/goblint-regression/09-regions_06-ptra_nr.i [2023-11-21 22:08:56,141 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:08:56,647 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:08:56,652 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/sv-benchmarks/c/goblint-regression/09-regions_06-ptra_nr.i [2023-11-21 22:08:56,691 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/data/203343c99/d013ae7ff0aa4d01ade9f1badc622b9c/FLAG97461f5d9 [2023-11-21 22:08:56,715 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/data/203343c99/d013ae7ff0aa4d01ade9f1badc622b9c [2023-11-21 22:08:56,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:08:56,726 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:08:56,730 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:08:56,731 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:08:56,740 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:08:56,741 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:08:56" (1/1) ... [2023-11-21 22:08:56,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@611c6132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:56, skipping insertion in model container [2023-11-21 22:08:56,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:08:56" (1/1) ... [2023-11-21 22:08:56,829 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:08:57,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:08:58,022 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 22:08:58,047 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:08:58,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:08:58,163 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:08:58,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:08:58,357 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:08:58,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:58 WrapperNode [2023-11-21 22:08:58,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:08:58,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:08:58,360 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:08:58,360 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:08:58,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:58" (1/1) ... [2023-11-21 22:08:58,411 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:58" (1/1) ... [2023-11-21 22:08:58,447 INFO L138 Inliner]: procedures = 370, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 103 [2023-11-21 22:08:58,448 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:08:58,449 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:08:58,449 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:08:58,449 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:08:58,461 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:58" (1/1) ... [2023-11-21 22:08:58,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:58" (1/1) ... [2023-11-21 22:08:58,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:58" (1/1) ... [2023-11-21 22:08:58,468 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:58" (1/1) ... [2023-11-21 22:08:58,486 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:58" (1/1) ... [2023-11-21 22:08:58,488 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:58" (1/1) ... [2023-11-21 22:08:58,492 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:58" (1/1) ... [2023-11-21 22:08:58,494 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:58" (1/1) ... [2023-11-21 22:08:58,501 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:08:58,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:08:58,502 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:08:58,503 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:08:58,504 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:58" (1/1) ... [2023-11-21 22:08:58,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:08:58,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:08:58,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:08:58,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:08:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 22:08:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:08:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:08:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:08:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 22:08:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-21 22:08:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 22:08:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 22:08:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:08:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:08:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:08:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-21 22:08:58,613 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-21 22:08:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:08:58,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:08:58,615 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:08:58,843 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:08:58,845 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:08:59,472 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:08:59,844 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:08:59,845 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:08:59,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:08:59 BoogieIcfgContainer [2023-11-21 22:08:59,848 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:08:59,850 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:08:59,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:08:59,855 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:08:59,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:08:56" (1/3) ... [2023-11-21 22:08:59,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1c5be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:08:59, skipping insertion in model container [2023-11-21 22:08:59,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:58" (2/3) ... [2023-11-21 22:08:59,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1c5be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:08:59, skipping insertion in model container [2023-11-21 22:08:59,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:08:59" (3/3) ... [2023-11-21 22:08:59,863 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_06-ptra_nr.i [2023-11-21 22:08:59,888 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:08:59,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2023-11-21 22:08:59,888 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:09:00,008 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:09:00,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 60 transitions, 124 flow [2023-11-21 22:09:00,139 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2023-11-21 22:09:00,139 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:09:00,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 59 events. 0/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 127 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-21 22:09:00,143 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 60 transitions, 124 flow [2023-11-21 22:09:00,152 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 59 transitions, 121 flow [2023-11-21 22:09:00,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:09:00,185 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;@79647fe3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:09:00,185 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-11-21 22:09:00,194 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:09:00,194 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 22:09:00,194 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:09:00,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:00,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:09:00,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-21 22:09:00,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:00,207 INFO L85 PathProgramCache]: Analyzing trace with hash 10121, now seen corresponding path program 1 times [2023-11-21 22:09:00,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:09:00,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738347372] [2023-11-21 22:09:00,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:00,230 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 [2023-11-21 22:09:00,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:09:00,235 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:09:00,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:09:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:00,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:09:00,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:09:00,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 22:09:00,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:09:00,571 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 [2023-11-21 22:09:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:09:00,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:09:00,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:09:00,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738347372] [2023-11-21 22:09:00,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738347372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:00,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:00,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:09:00,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688254356] [2023-11-21 22:09:00,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:00,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:09:00,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:09:00,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:09:00,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:09:00,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 60 [2023-11-21 22:09:00,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:00,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:09:00,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 60 [2023-11-21 22:09:00,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:09:01,112 INFO L124 PetriNetUnfolderBase]: 42/179 cut-off events. [2023-11-21 22:09:01,112 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:09:01,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 179 events. 42/179 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 750 event pairs, 42 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 256. Up to 101 conditions per place. [2023-11-21 22:09:01,120 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 18 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2023-11-21 22:09:01,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 153 flow [2023-11-21 22:09:01,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:09:01,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:09:01,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2023-11-21 22:09:01,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2023-11-21 22:09:01,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 124 transitions. [2023-11-21 22:09:01,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 124 transitions. [2023-11-21 22:09:01,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:09:01,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 124 transitions. [2023-11-21 22:09:01,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:01,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:01,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:01,166 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 121 flow. Second operand 3 states and 124 transitions. [2023-11-21 22:09:01,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 153 flow [2023-11-21 22:09:01,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:09:01,180 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 116 flow [2023-11-21 22:09:01,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-11-21 22:09:01,187 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2023-11-21 22:09:01,188 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 116 flow [2023-11-21 22:09:01,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:01,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:01,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:09:01,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:09:01,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:09:01,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-21 22:09:01,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:01,399 INFO L85 PathProgramCache]: Analyzing trace with hash 10122, now seen corresponding path program 1 times [2023-11-21 22:09:01,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:09:01,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838051275] [2023-11-21 22:09:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:01,400 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 [2023-11-21 22:09:01,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:09:01,424 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:09:01,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:09:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:01,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:09:01,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:09:01,571 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 [2023-11-21 22:09:01,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:09:01,586 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 [2023-11-21 22:09:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:09:01,601 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:09:01,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:09:01,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838051275] [2023-11-21 22:09:01,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838051275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:01,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:01,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:09:01,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895776275] [2023-11-21 22:09:01,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:01,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:09:01,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:09:01,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:09:01,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:09:01,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 60 [2023-11-21 22:09:01,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:01,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:09:01,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 60 [2023-11-21 22:09:01,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:09:02,114 INFO L124 PetriNetUnfolderBase]: 42/173 cut-off events. [2023-11-21 22:09:02,116 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:09:02,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 173 events. 42/173 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 751 event pairs, 42 based on Foata normal form. 5/143 useless extension candidates. Maximal degree in co-relation 263. Up to 101 conditions per place. [2023-11-21 22:09:02,124 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 15 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-11-21 22:09:02,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 142 flow [2023-11-21 22:09:02,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:09:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:09:02,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2023-11-21 22:09:02,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2023-11-21 22:09:02,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 130 transitions. [2023-11-21 22:09:02,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 130 transitions. [2023-11-21 22:09:02,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:09:02,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 130 transitions. [2023-11-21 22:09:02,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:02,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:02,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:02,141 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 116 flow. Second operand 3 states and 130 transitions. [2023-11-21 22:09:02,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 142 flow [2023-11-21 22:09:02,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:09:02,144 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 104 flow [2023-11-21 22:09:02,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-11-21 22:09:02,145 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -11 predicate places. [2023-11-21 22:09:02,146 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 104 flow [2023-11-21 22:09:02,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:02,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:02,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:09:02,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:09:02,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:09:02,354 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-21 22:09:02,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:02,354 INFO L85 PathProgramCache]: Analyzing trace with hash 765276123, now seen corresponding path program 1 times [2023-11-21 22:09:02,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:09:02,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460198071] [2023-11-21 22:09:02,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:02,357 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 [2023-11-21 22:09:02,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:09:02,358 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:09:02,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:09:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:02,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:09:02,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:09:02,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 22:09:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:09:02,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:09:02,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:09:02,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460198071] [2023-11-21 22:09:02,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460198071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:02,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:02,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:09:02,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59285314] [2023-11-21 22:09:02,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:02,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:09:02,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:09:02,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:09:02,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:09:02,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 60 [2023-11-21 22:09:02,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:02,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:09:02,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 60 [2023-11-21 22:09:02,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:09:03,006 INFO L124 PetriNetUnfolderBase]: 42/161 cut-off events. [2023-11-21 22:09:03,006 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:09:03,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 161 events. 42/161 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 651 event pairs, 42 based on Foata normal form. 9/147 useless extension candidates. Maximal degree in co-relation 252. Up to 102 conditions per place. [2023-11-21 22:09:03,009 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 18 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-11-21 22:09:03,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 134 flow [2023-11-21 22:09:03,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:09:03,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:09:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2023-11-21 22:09:03,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7444444444444445 [2023-11-21 22:09:03,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 134 transitions. [2023-11-21 22:09:03,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 134 transitions. [2023-11-21 22:09:03,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:09:03,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 134 transitions. [2023-11-21 22:09:03,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:03,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:03,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:03,016 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 104 flow. Second operand 3 states and 134 transitions. [2023-11-21 22:09:03,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 134 flow [2023-11-21 22:09:03,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 43 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:09:03,019 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 90 flow [2023-11-21 22:09:03,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-11-21 22:09:03,021 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -15 predicate places. [2023-11-21 22:09:03,021 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 90 flow [2023-11-21 22:09:03,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:03,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:03,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:09:03,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:09:03,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:09:03,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-21 22:09:03,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:03,227 INFO L85 PathProgramCache]: Analyzing trace with hash 765276122, now seen corresponding path program 1 times [2023-11-21 22:09:03,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:09:03,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152857729] [2023-11-21 22:09:03,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:03,229 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 [2023-11-21 22:09:03,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:09:03,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:09:03,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:09:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:03,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:09:03,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:09:03,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 22:09:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:09:03,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:09:03,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:09:03,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152857729] [2023-11-21 22:09:03,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152857729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:03,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:03,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:09:03,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950020880] [2023-11-21 22:09:03,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:03,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:09:03,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:09:03,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:09:03,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:09:03,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 60 [2023-11-21 22:09:03,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:03,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:09:03,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 60 [2023-11-21 22:09:03,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:09:03,844 INFO L124 PetriNetUnfolderBase]: 53/190 cut-off events. [2023-11-21 22:09:03,844 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-21 22:09:03,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 190 events. 53/190 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 758 event pairs, 37 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 321. Up to 101 conditions per place. [2023-11-21 22:09:03,847 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 26 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2023-11-21 22:09:03,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 49 transitions, 162 flow [2023-11-21 22:09:03,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:09:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:09:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2023-11-21 22:09:03,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7888888888888889 [2023-11-21 22:09:03,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2023-11-21 22:09:03,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2023-11-21 22:09:03,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:09:03,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2023-11-21 22:09:03,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:03,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:03,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:03,854 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 90 flow. Second operand 3 states and 142 transitions. [2023-11-21 22:09:03,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 49 transitions, 162 flow [2023-11-21 22:09:03,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:09:03,857 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 113 flow [2023-11-21 22:09:03,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-11-21 22:09:03,859 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -14 predicate places. [2023-11-21 22:09:03,859 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 113 flow [2023-11-21 22:09:03,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:03,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:03,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:03,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:09:04,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:09:04,064 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-21 22:09:04,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:04,065 INFO L85 PathProgramCache]: Analyzing trace with hash 654862774, now seen corresponding path program 1 times [2023-11-21 22:09:04,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:09:04,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197006442] [2023-11-21 22:09:04,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:04,066 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 [2023-11-21 22:09:04,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:09:04,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:09:04,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:09:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:04,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:09:04,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:09:04,500 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-21 22:09:04,501 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 21 treesize of output 15 [2023-11-21 22:09:04,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:09:04,558 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 [2023-11-21 22:09:04,700 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-21 22:09:04,700 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 [2023-11-21 22:09:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:09:04,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:09:04,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:09:04,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197006442] [2023-11-21 22:09:04,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197006442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:04,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:04,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:09:04,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274028697] [2023-11-21 22:09:04,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:04,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:09:04,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:09:04,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:09:04,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:09:05,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 60 [2023-11-21 22:09:05,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:05,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:09:05,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 60 [2023-11-21 22:09:05,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:09:05,547 INFO L124 PetriNetUnfolderBase]: 45/171 cut-off events. [2023-11-21 22:09:05,547 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-11-21 22:09:05,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 171 events. 45/171 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 681 event pairs, 33 based on Foata normal form. 1/148 useless extension candidates. Maximal degree in co-relation 317. Up to 77 conditions per place. [2023-11-21 22:09:05,550 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 23 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-21 22:09:05,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 171 flow [2023-11-21 22:09:05,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:09:05,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:09:05,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-21 22:09:05,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8111111111111111 [2023-11-21 22:09:05,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-21 22:09:05,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-21 22:09:05,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:09:05,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-21 22:09:05,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:05,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:05,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:05,555 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 113 flow. Second operand 3 states and 146 transitions. [2023-11-21 22:09:05,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 171 flow [2023-11-21 22:09:05,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:09:05,559 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 107 flow [2023-11-21 22:09:05,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-11-21 22:09:05,560 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -15 predicate places. [2023-11-21 22:09:05,561 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 107 flow [2023-11-21 22:09:05,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:05,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:05,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:05,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-21 22:09:05,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:09:05,769 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-21 22:09:05,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:05,770 INFO L85 PathProgramCache]: Analyzing trace with hash 654862775, now seen corresponding path program 1 times [2023-11-21 22:09:05,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:09:05,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610315972] [2023-11-21 22:09:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:05,772 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 [2023-11-21 22:09:05,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:09:05,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:09:05,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:09:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:06,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:09:06,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:09:06,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:09:06,152 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 [2023-11-21 22:09:06,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-21 22:09:06,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:09:06,228 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 [2023-11-21 22:09:06,373 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-21 22:09:06,373 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 12 treesize of output 18 [2023-11-21 22:09:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:09:06,550 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:09:06,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:09:06,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610315972] [2023-11-21 22:09:06,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610315972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:06,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:06,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:09:06,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253025440] [2023-11-21 22:09:06,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:06,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:09:06,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:09:06,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:09:06,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:09:07,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 60 [2023-11-21 22:09:07,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:07,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:09:07,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 60 [2023-11-21 22:09:07,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:09:08,015 INFO L124 PetriNetUnfolderBase]: 45/170 cut-off events. [2023-11-21 22:09:08,015 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-21 22:09:08,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 170 events. 45/170 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 682 event pairs, 33 based on Foata normal form. 1/147 useless extension candidates. Maximal degree in co-relation 313. Up to 77 conditions per place. [2023-11-21 22:09:08,018 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 23 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-21 22:09:08,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 165 flow [2023-11-21 22:09:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:09:08,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:09:08,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-21 22:09:08,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8111111111111111 [2023-11-21 22:09:08,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-21 22:09:08,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-21 22:09:08,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:09:08,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-21 22:09:08,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:08,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:08,024 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:08,024 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 107 flow. Second operand 3 states and 146 transitions. [2023-11-21 22:09:08,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 165 flow [2023-11-21 22:09:08,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:09:08,028 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 105 flow [2023-11-21 22:09:08,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-11-21 22:09:08,029 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -16 predicate places. [2023-11-21 22:09:08,030 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 105 flow [2023-11-21 22:09:08,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:08,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:08,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:08,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:09:08,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:09:08,237 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-21 22:09:08,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:08,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1275745982, now seen corresponding path program 1 times [2023-11-21 22:09:08,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:09:08,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861362496] [2023-11-21 22:09:08,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:08,239 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 [2023-11-21 22:09:08,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:09:08,240 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:09:08,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:09:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:08,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:09:08,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:09:08,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 22:09:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:09:08,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:09:08,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:09:08,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861362496] [2023-11-21 22:09:08,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861362496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:08,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:08,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:09:08,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802524774] [2023-11-21 22:09:08,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:08,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:09:08,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:09:08,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:09:08,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:09:08,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 60 [2023-11-21 22:09:08,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:08,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:09:08,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 60 [2023-11-21 22:09:08,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:09:08,902 INFO L124 PetriNetUnfolderBase]: 56/205 cut-off events. [2023-11-21 22:09:08,902 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-21 22:09:08,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 205 events. 56/205 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 902 event pairs, 38 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 377. Up to 111 conditions per place. [2023-11-21 22:09:08,905 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 28 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-11-21 22:09:08,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 50 transitions, 191 flow [2023-11-21 22:09:08,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:09:08,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:09:08,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2023-11-21 22:09:08,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2023-11-21 22:09:08,907 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2023-11-21 22:09:08,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2023-11-21 22:09:08,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:09:08,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2023-11-21 22:09:08,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:08,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:08,910 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:08,910 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 105 flow. Second operand 3 states and 147 transitions. [2023-11-21 22:09:08,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 50 transitions, 191 flow [2023-11-21 22:09:08,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 185 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:09:08,941 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 135 flow [2023-11-21 22:09:08,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-11-21 22:09:08,942 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -14 predicate places. [2023-11-21 22:09:08,943 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 135 flow [2023-11-21 22:09:08,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:08,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:08,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:08,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-21 22:09:09,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:09:09,150 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-21 22:09:09,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:09,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1275745983, now seen corresponding path program 1 times [2023-11-21 22:09:09,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:09:09,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648875781] [2023-11-21 22:09:09,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:09,151 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 [2023-11-21 22:09:09,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:09:09,153 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:09:09,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:09:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:09,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:09:09,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:09:09,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 22:09:09,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:09:09,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:09:09,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:09:09,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648875781] [2023-11-21 22:09:09,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648875781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:09,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:09,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:09:09,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141116919] [2023-11-21 22:09:09,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:09,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:09:09,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:09:09,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:09:09,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:09:09,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 60 [2023-11-21 22:09:09,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:09,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:09:09,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 60 [2023-11-21 22:09:09,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:09:09,887 INFO L124 PetriNetUnfolderBase]: 47/178 cut-off events. [2023-11-21 22:09:09,888 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-21 22:09:09,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 178 events. 47/178 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 743 event pairs, 36 based on Foata normal form. 20/179 useless extension candidates. Maximal degree in co-relation 376. Up to 101 conditions per place. [2023-11-21 22:09:09,890 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 25 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-11-21 22:09:09,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 199 flow [2023-11-21 22:09:09,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:09:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:09:09,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2023-11-21 22:09:09,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8055555555555556 [2023-11-21 22:09:09,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2023-11-21 22:09:09,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2023-11-21 22:09:09,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:09:09,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2023-11-21 22:09:09,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:09,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:09,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:09,896 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 135 flow. Second operand 3 states and 145 transitions. [2023-11-21 22:09:09,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 199 flow [2023-11-21 22:09:09,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 191 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:09:09,899 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 129 flow [2023-11-21 22:09:09,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-11-21 22:09:09,901 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -16 predicate places. [2023-11-21 22:09:09,901 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 129 flow [2023-11-21 22:09:09,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:09,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:09,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:09,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:09:10,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:09:10,108 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-21 22:09:10,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:10,108 INFO L85 PathProgramCache]: Analyzing trace with hash -455135641, now seen corresponding path program 1 times [2023-11-21 22:09:10,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:09:10,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645386627] [2023-11-21 22:09:10,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:10,109 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 [2023-11-21 22:09:10,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:09:10,110 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:09:10,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 22:09:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:10,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:09:10,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:09:10,505 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 [2023-11-21 22:09:10,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:09:10,514 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 [2023-11-21 22:09:10,558 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-21 22:09:10,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-21 22:09:10,598 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-21 22:09:10,598 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 [2023-11-21 22:09:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:09:10,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:09:10,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:09:10,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645386627] [2023-11-21 22:09:10,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645386627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:10,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:10,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:09:10,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852360367] [2023-11-21 22:09:10,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:10,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:09:10,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:09:10,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:09:10,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:09:10,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 60 [2023-11-21 22:09:10,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:10,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:09:10,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 60 [2023-11-21 22:09:10,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:09:10,985 INFO L124 PetriNetUnfolderBase]: 48/176 cut-off events. [2023-11-21 22:09:10,985 INFO L125 PetriNetUnfolderBase]: For 64/67 co-relation queries the response was YES. [2023-11-21 22:09:10,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 176 events. 48/176 cut-off events. For 64/67 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 716 event pairs, 34 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 372. Up to 77 conditions per place. [2023-11-21 22:09:10,987 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 24 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-11-21 22:09:10,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 199 flow [2023-11-21 22:09:10,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:09:10,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:09:10,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-21 22:09:10,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8111111111111111 [2023-11-21 22:09:10,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-21 22:09:10,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-21 22:09:10,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:09:10,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-21 22:09:10,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:10,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:10,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:10,993 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 129 flow. Second operand 3 states and 146 transitions. [2023-11-21 22:09:10,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 199 flow [2023-11-21 22:09:10,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 189 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:09:10,996 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 127 flow [2023-11-21 22:09:10,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-11-21 22:09:10,997 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -17 predicate places. [2023-11-21 22:09:10,997 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 127 flow [2023-11-21 22:09:10,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:10,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:10,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:11,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-21 22:09:11,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:09:11,205 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-21 22:09:11,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:11,206 INFO L85 PathProgramCache]: Analyzing trace with hash -455135640, now seen corresponding path program 1 times [2023-11-21 22:09:11,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:09:11,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141429196] [2023-11-21 22:09:11,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:11,207 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 [2023-11-21 22:09:11,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:09:11,209 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:09:11,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-21 22:09:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:11,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 22:09:11,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:09:11,730 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 [2023-11-21 22:09:11,741 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 [2023-11-21 22:09:11,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 22:09:11,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:09:11,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-21 22:09:11,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:09:11,827 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 [2023-11-21 22:09:11,845 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 22:09:11,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-21 22:09:11,907 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-21 22:09:11,907 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 12 treesize of output 14 [2023-11-21 22:09:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:09:11,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:09:11,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:09:11,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141429196] [2023-11-21 22:09:11,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141429196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:11,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:11,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:09:11,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849701733] [2023-11-21 22:09:11,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:11,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:09:11,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:09:11,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:09:11,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:09:12,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 60 [2023-11-21 22:09:12,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:12,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:09:12,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 60 [2023-11-21 22:09:12,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:09:12,567 INFO L124 PetriNetUnfolderBase]: 46/166 cut-off events. [2023-11-21 22:09:12,567 INFO L125 PetriNetUnfolderBase]: For 48/51 co-relation queries the response was YES. [2023-11-21 22:09:12,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 166 events. 46/166 cut-off events. For 48/51 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 668 event pairs, 30 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 347. Up to 77 conditions per place. [2023-11-21 22:09:12,569 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 28 selfloop transitions, 4 changer transitions 2/52 dead transitions. [2023-11-21 22:09:12,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 229 flow [2023-11-21 22:09:12,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:09:12,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:09:12,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2023-11-21 22:09:12,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7833333333333333 [2023-11-21 22:09:12,572 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 188 transitions. [2023-11-21 22:09:12,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 188 transitions. [2023-11-21 22:09:12,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:09:12,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 188 transitions. [2023-11-21 22:09:12,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:12,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:12,575 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:12,575 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 127 flow. Second operand 4 states and 188 transitions. [2023-11-21 22:09:12,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 229 flow [2023-11-21 22:09:12,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 52 transitions, 223 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:09:12,584 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 127 flow [2023-11-21 22:09:12,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-11-21 22:09:12,588 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -17 predicate places. [2023-11-21 22:09:12,588 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 127 flow [2023-11-21 22:09:12,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:12,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:12,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:12,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-21 22:09:12,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:09:12,795 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2023-11-21 22:09:12,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:12,795 INFO L85 PathProgramCache]: Analyzing trace with hash 266221965, now seen corresponding path program 1 times [2023-11-21 22:09:12,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:09:12,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294399583] [2023-11-21 22:09:12,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:12,796 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 [2023-11-21 22:09:12,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:09:12,798 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -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) [2023-11-21 22:09:12,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-21 22:09:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:09:13,345 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:09:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:09:13,711 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-21 22:09:13,711 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:09:13,712 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK (41 of 42 remaining) [2023-11-21 22:09:13,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 42 remaining) [2023-11-21 22:09:13,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 42 remaining) [2023-11-21 22:09:13,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 42 remaining) [2023-11-21 22:09:13,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 42 remaining) [2023-11-21 22:09:13,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 42 remaining) [2023-11-21 22:09:13,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 42 remaining) [2023-11-21 22:09:13,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 42 remaining) [2023-11-21 22:09:13,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 42 remaining) [2023-11-21 22:09:13,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 42 remaining) [2023-11-21 22:09:13,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 42 remaining) [2023-11-21 22:09:13,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 42 remaining) [2023-11-21 22:09:13,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 42 remaining) [2023-11-21 22:09:13,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 42 remaining) [2023-11-21 22:09:13,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 42 remaining) [2023-11-21 22:09:13,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 42 remaining) [2023-11-21 22:09:13,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 42 remaining) [2023-11-21 22:09:13,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 42 remaining) [2023-11-21 22:09:13,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 42 remaining) [2023-11-21 22:09:13,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 42 remaining) [2023-11-21 22:09:13,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 42 remaining) [2023-11-21 22:09:13,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 42 remaining) [2023-11-21 22:09:13,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 42 remaining) [2023-11-21 22:09:13,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 42 remaining) [2023-11-21 22:09:13,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 42 remaining) [2023-11-21 22:09:13,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 42 remaining) [2023-11-21 22:09:13,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 42 remaining) [2023-11-21 22:09:13,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 42 remaining) [2023-11-21 22:09:13,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 42 remaining) [2023-11-21 22:09:13,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 42 remaining) [2023-11-21 22:09:13,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 42 remaining) [2023-11-21 22:09:13,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 42 remaining) [2023-11-21 22:09:13,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 42 remaining) [2023-11-21 22:09:13,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 42 remaining) [2023-11-21 22:09:13,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 42 remaining) [2023-11-21 22:09:13,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 42 remaining) [2023-11-21 22:09:13,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 42 remaining) [2023-11-21 22:09:13,722 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 42 remaining) [2023-11-21 22:09:13,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 42 remaining) [2023-11-21 22:09:13,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 42 remaining) [2023-11-21 22:09:13,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 42 remaining) [2023-11-21 22:09:13,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 42 remaining) [2023-11-21 22:09:13,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-21 22:09:13,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:09:13,931 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:13,938 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 22:09:13,938 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:09:13,976 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock [2023-11-21 22:09:13,977 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind [2023-11-21 22:09:13,977 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner [2023-11-21 22:09:13,977 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count [2023-11-21 22:09:13,978 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers [2023-11-21 22:09:13,978 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock [2023-11-21 22:09:13,978 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind [2023-11-21 22:09:13,979 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner [2023-11-21 22:09:13,979 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count [2023-11-21 22:09:13,979 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers [2023-11-21 22:09:13,980 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock [2023-11-21 22:09:13,980 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind [2023-11-21 22:09:13,980 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner [2023-11-21 22:09:13,980 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count [2023-11-21 22:09:13,981 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers [2023-11-21 22:09:13,981 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock [2023-11-21 22:09:13,982 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre37 could not be translated [2023-11-21 22:09:13,982 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind [2023-11-21 22:09:13,982 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner [2023-11-21 22:09:13,982 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count [2023-11-21 22:09:13,983 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers [2023-11-21 22:09:13,983 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock [2023-11-21 22:09:13,983 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind [2023-11-21 22:09:13,983 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner [2023-11-21 22:09:13,984 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count [2023-11-21 22:09:13,984 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers [2023-11-21 22:09:13,984 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock [2023-11-21 22:09:13,985 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind [2023-11-21 22:09:13,985 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner [2023-11-21 22:09:13,985 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count [2023-11-21 22:09:13,985 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers [2023-11-21 22:09:13,986 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock [2023-11-21 22:09:13,986 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind [2023-11-21 22:09:13,986 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner [2023-11-21 22:09:13,987 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count [2023-11-21 22:09:13,987 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers [2023-11-21 22:09:13,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:09:13 BasicIcfg [2023-11-21 22:09:13,999 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:09:14,000 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:09:14,000 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:09:14,000 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:09:14,001 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:08:59" (3/4) ... [2023-11-21 22:09:14,004 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 22:09:14,005 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:09:14,006 INFO L158 Benchmark]: Toolchain (without parser) took 17280.70ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 84.9MB in the beginning and 109.9MB in the end (delta: -25.0MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2023-11-21 22:09:14,007 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 79.7MB. Free memory was 56.4MB in the beginning and 56.3MB in the end (delta: 148.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:09:14,007 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1628.25ms. Allocated memory is still 111.1MB. Free memory was 84.6MB in the beginning and 64.0MB in the end (delta: 20.6MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2023-11-21 22:09:14,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.52ms. Allocated memory is still 111.1MB. Free memory was 64.0MB in the beginning and 61.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:09:14,008 INFO L158 Benchmark]: Boogie Preprocessor took 52.78ms. Allocated memory is still 111.1MB. Free memory was 61.0MB in the beginning and 59.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:09:14,009 INFO L158 Benchmark]: RCFGBuilder took 1345.74ms. Allocated memory is still 111.1MB. Free memory was 59.0MB in the beginning and 47.7MB in the end (delta: 11.3MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2023-11-21 22:09:14,009 INFO L158 Benchmark]: TraceAbstraction took 14148.89ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 46.9MB in the beginning and 109.9MB in the end (delta: -63.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:09:14,010 INFO L158 Benchmark]: Witness Printer took 5.72ms. Allocated memory is still 161.5MB. Free memory is still 109.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:09:14,016 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 79.7MB. Free memory was 56.4MB in the beginning and 56.3MB in the end (delta: 148.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1628.25ms. Allocated memory is still 111.1MB. Free memory was 84.6MB in the beginning and 64.0MB in the end (delta: 20.6MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.52ms. Allocated memory is still 111.1MB. Free memory was 64.0MB in the beginning and 61.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.78ms. Allocated memory is still 111.1MB. Free memory was 61.0MB in the beginning and 59.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1345.74ms. Allocated memory is still 111.1MB. Free memory was 59.0MB in the beginning and 47.7MB in the end (delta: 11.3MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * TraceAbstraction took 14148.89ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 46.9MB in the beginning and 109.9MB in the end (delta: -63.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.72ms. Allocated memory is still 161.5MB. Free memory is still 109.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__lock - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__kind - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__owner - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__count - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~B_mutex~0.__data.__nusers - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1247]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1247. Possible FailurePath: [L1223-L1226] 0 struct s { struct s *next; int datum; } *A, *B; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1248] 0 pthread_t t1; [L1249] 0 int *ip; [L1250] 0 struct s *sp; [L1251] 0 struct s *p = malloc(sizeof(struct s)); [L1252] CALL 0 init(p,9) [L1228] 0 p -> datum = x VAL [A={0:0}, A_mutex={1:0}, B={0:0}, \old(x)=9, p={3:0}, p={3:0}, x=9] [L1229] 0 p -> next = ((void *)0) [L1252] RET 0 init(p,9) [L1253] 0 A = malloc(sizeof(struct s)) [L1254] CALL 0 init(A,3) [L1228] 0 p -> datum = x VAL [A={5:0}, A_mutex={1:0}, B={0:0}, \old(x)=3, p={5:0}, p={5:0}, x=3] [L1229] 0 p -> next = ((void *)0) [L1254] RET 0 init(A,3) [L1255] 0 A->next = p [L1256] 0 B = malloc(sizeof(struct s)) [L1257] CALL 0 init(B,5) [L1228] 0 p -> datum = x VAL [A={5:0}, A_mutex={1:0}, B={2:0}, \old(x)=5, p={2:0}, p={2:0}, x=5] [L1229] 0 p -> next = ((void *)0) [L1257] RET 0 init(B,5) [L1258] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [A={5:0}, A_mutex={1:0}, B={2:0}, p={3:0}, t1={9:0}] [L1259] 0 ip = &p->datum [L1260] 0 sp = ((struct s *)((char *)(ip)-(unsigned long)(&((struct s *)0)->datum))) VAL [A={5:0}, A_mutex={1:0}, B={2:0}, ip={3:4}, p={3:0}, sp={3:0}, t1={9:0}] [L1262] EXPR 0 A->next [L1262] 0 sp = A->next [L1263] 0 p->datum VAL [A={5:0}, A_mutex={1:0}, B={2:0}, ip={3:4}, p={3:0}, sp={3:0}, t1={9:0}] [L1265] 0 return 0; [L1265] 0 return 0; VAL [A={5:0}, A_mutex={1:0}, B={2:0}, \result=0, ip={3:4}, p={3:0}, sp={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1258]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 83 locations, 42 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.9s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 971 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 480 mSDsluCounter, 120 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 992 IncrementalHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 105 mSDtfsCounter, 992 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 61 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=7, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 78 ConstructedInterpolants, 12 QuantifiedInterpolants, 637 SizeOfPredicates, 40 NumberOfNonLiveVariables, 1834 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 22:09:14,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30b143d1-3824-4fe7-a22e-cffda5e0ad93/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample